From 64239747a08d1cad4ead02f7dabef33228df161c Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Tue, 19 Feb 2019 14:02:58 -0800
Subject: [PATCH 01/10] Migrate output towards the 1.0 strategy

This commit is the first in what is hopefully a series to help move
`wasm-pack`'s CLI output and interactions to a "1.0 status". This was
[discussed at the recent Rust All Hands][discussion] where the salient
points we ended up extracting were:

* At all times if a user is waiting for `wasm-pack` to finish it should
  be clear what's being waited on.
  * As an example, Cargo's own output shows what crate is being built.
  * As another example, something that always takes only a handful of
    milliseconds to complete doesn't need an informational message.
* The final output products of a command should always be clear and
  printed. For example the output location of artifacts should always be
  printed.
* The `wasm-pack` CLI tool should use "progressive enhancement" to
  incrementally detect features of the output it can use (like colors,
  emoji, etc) but always work in the absence of these features. This'll
  help us support a wide range of use cases and terminals.

The goal of this commit is to not get us all the way there but start us
down the path to satisfying these goals. To that end the major change
here is to remove the dependency on `indicatif`. Using `indicatif`
requires that all output is piped through the `indicatif` crate itself,
which causes the third item here to not work for one of the main parts
of `wasm-pack build`, the `cargo` pieces. Cargo (and the Rust compiler)
are unable to use thir own tools for progressive enhancement when the
output is captured and sent through `indicatif`.

Lots more refactoring will be needed internally to fully polish off the
input/output to a "1.0 status", but this is hopefully a good start!

[discussion]: https://gist.github.com/fitzgen/23a62ebbd67574b9f6f72e5ac8eaeb67#file-road-to-wasm-pack-1-0-md
---
 Cargo.lock           | 1582 ------------------------------------------
 Cargo.toml           |    3 +-
 src/command/build.rs |    3 +-
 src/command/test.rs  |    3 +-
 src/command/utils.rs |   12 +
 src/lib.rs           |   11 +-
 src/progressbar.rs   |   66 +-
 7 files changed, 22 insertions(+), 1658 deletions(-)
 delete mode 100644 Cargo.lock

diff --git a/Cargo.lock b/Cargo.lock
deleted file mode 100644
index 55082a7..0000000
--- a/Cargo.lock
+++ /dev/null
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-"checksum zip 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "00acf1fafb786ff450b6726e5be41ef029142597b47a40ce80f952f1471730a0"
diff --git a/Cargo.toml b/Cargo.toml
index a031588..2055028 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,8 +20,6 @@ env_logger = { version = "0.5.13", default-features = false }
 failure = "0.1.2"
 human-panic = "1.0.1"
 glob = "0.2"
-indicatif = "0.9.0"
-lazy_static = "1.1.0"
 log = "0.4.6"
 openssl = { version = '0.10.11', optional = true }
 parking_lot = "0.6"
@@ -39,6 +37,7 @@ walkdir = "2"
 
 [dev-dependencies]
 assert_cmd = "0.10.2"
+lazy_static = "1.1.0"
 predicates = "1.0.0"
 tempfile = "3"
 
diff --git a/src/command/build.rs b/src/command/build.rs
index e7feb9b..b21345d 100644
--- a/src/command/build.rs
+++ b/src/command/build.rs
@@ -7,7 +7,6 @@ use cache;
 use command::utils::{create_pkg_dir, set_crate_path};
 use emoji;
 use failure::Error;
-use indicatif::HumanDuration;
 use license;
 use lockfile::Lockfile;
 use log::info;
@@ -236,7 +235,7 @@ impl Build {
             step_counter.inc();
         }
 
-        let duration = HumanDuration(started.elapsed());
+        let duration = crate::command::utils::elapsed(started.elapsed());
         info!("Done in {}.", &duration);
         info!(
             "Your wasm pkg is ready to publish at {}.",
diff --git a/src/command/test.rs b/src/command/test.rs
index 43797e7..6235c12 100644
--- a/src/command/test.rs
+++ b/src/command/test.rs
@@ -9,7 +9,6 @@ use command::utils::set_crate_path;
 use console::style;
 use emoji;
 use failure::Error;
-use indicatif::HumanDuration;
 use lockfile::Lockfile;
 use log::info;
 use manifest;
@@ -172,7 +171,7 @@ impl Test {
             process_step(&mut self, &step_counter)?;
             step_counter.inc();
         }
-        let duration = HumanDuration(started.elapsed());
+        let duration = crate::command::utils::elapsed(started.elapsed());
         info!("Done in {}.", &duration);
 
         Ok(())
diff --git a/src/command/utils.rs b/src/command/utils.rs
index 5a29a74..0668a55 100644
--- a/src/command/utils.rs
+++ b/src/command/utils.rs
@@ -5,6 +5,7 @@ use failure;
 use progressbar::Step;
 use std::fs;
 use std::path::{Path, PathBuf};
+use std::time::Duration;
 use walkdir::WalkDir;
 use PBAR;
 
@@ -39,3 +40,14 @@ pub fn find_pkg_directory(path: &Path) -> Option<PathBuf> {
 fn is_pkg_directory(path: &Path) -> bool {
     path.exists() && path.is_dir() && path.ends_with("pkg")
 }
+
+/// Render a `Duration` to a form suitable for display on a console
+pub fn elapsed(duration: Duration) -> String {
+    let secs = duration.as_secs();
+
+    if secs >= 60 {
+        format!("{}m {:02}s", secs / 60, secs % 60)
+    } else {
+        format!("{}.{:02}s", secs, duration.subsec_nanos() / 10_000_000)
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index 97b136f..e8b7ceb 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -8,12 +8,9 @@ extern crate strsim;
 #[macro_use]
 extern crate failure;
 extern crate glob;
-extern crate indicatif;
-extern crate which;
-#[macro_use]
-extern crate lazy_static;
 extern crate parking_lot;
 extern crate serde;
+extern crate which;
 #[macro_use]
 extern crate serde_derive;
 extern crate serde_ignored;
@@ -43,10 +40,8 @@ pub mod test;
 
 use progressbar::ProgressOutput;
 
-lazy_static! {
-    /// The global progress bar and user-facing message output.
-    pub static ref PBAR: ProgressOutput = { ProgressOutput::new() };
-}
+/// The global progress bar and user-facing message output.
+pub static PBAR: ProgressOutput = ProgressOutput;
 
 /// 📦 ✨  pack and publish your wasm!
 #[derive(Debug, StructOpt)]
diff --git a/src/progressbar.rs b/src/progressbar.rs
index 228e9c6..a7cb11f 100644
--- a/src/progressbar.rs
+++ b/src/progressbar.rs
@@ -2,25 +2,12 @@
 
 use console::style;
 use emoji;
-use indicatif::{ProgressBar, ProgressStyle};
-use parking_lot::RwLock;
 use std::fmt;
 
 /// Synchronized progress bar and status message printing.
-pub struct ProgressOutput {
-    spinner: RwLock<ProgressBar>,
-    messages: RwLock<String>,
-}
+pub struct ProgressOutput;
 
 impl ProgressOutput {
-    /// Construct a new `ProgressOutput`.
-    pub fn new() -> Self {
-        Self {
-            spinner: RwLock::new(ProgressBar::new_spinner()),
-            messages: RwLock::new(String::from("")),
-        }
-    }
-
     /// Inform the user that the given `step` is being executed, with details in
     /// `message`.
     pub fn step(&self, step: &Step, message: &str) {
@@ -28,35 +15,13 @@ impl ProgressOutput {
         self.message(&msg)
     }
 
-    fn finish(&self) {
-        let spinner = self.spinner.read();
-        spinner.finish();
-
-        let mut message = self.messages.write();
-        print!("{}", *message);
-        message.clear();
-    }
-
     /// Print the given message.
     pub fn message(&self, message: &str) {
-        self.finish();
-
-        let mut spinner = self.spinner.write();
-        *spinner = Self::progressbar(message);
-
-        if !atty::is(atty::Stream::Stderr) {
-            // `indicatif` won't print any output if `stderr` is not a tty, so
-            // to ensure that our output is still emitted, we print it manually
-            // here.
-            eprintln!("{}", message)
-        }
+        eprintln!("  {}", message);
     }
 
     fn add_message(&self, msg: &str) {
-        let mut message = self.messages.write();
-        message.push_str("  ");
-        message.push_str(msg);
-        message.push('\n');
+        println!("{}", msg);
     }
 
     /// Add an informational message.
@@ -91,23 +56,6 @@ impl ProgressOutput {
         );
         self.add_message(&err);
     }
-
-    fn progressbar(msg: &str) -> ProgressBar {
-        let pb = ProgressBar::new_spinner();
-        pb.enable_steady_tick(200);
-        pb.set_style(
-            ProgressStyle::default_spinner()
-                .tick_chars("/|\\- ")
-                .template("{spinner:.dim.bold} {wide_msg}"),
-        );
-        pb.set_message(&msg);
-        pb
-    }
-
-    /// After having built up a series of messages, print all of them out.
-    pub fn done(&self) {
-        self.finish();
-    }
 }
 
 /// For processes that can be broken down into N fractional steps, with messages
@@ -137,14 +85,8 @@ impl fmt::Display for Step {
     }
 }
 
-impl Drop for ProgressOutput {
-    fn drop(&mut self) {
-        self.done();
-    }
-}
-
 impl Default for ProgressOutput {
     fn default() -> Self {
-        Self::new()
+        ProgressOutput
     }
 }

From d3d2a4cc28eac74ec6d680037ab1e0a92187b569 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Tue, 26 Feb 2019 09:49:03 -0800
Subject: [PATCH 02/10] More effort towards "1.0 output" goals

This commit moves wasm-pack further along the spectrum towards the 1.0
output previously discussed at the last work week. The changes here are:

* Steps which execute near instantaneously no longer print informational
  messages by default.
* Long-running steps like downloading chromedriver/geckodriver now only
  print if they actually perform a download.
* The "add wasm target" step now prints nothing if the wasm target is
  already installed.
* Child process output is no longer captured and is redirected natively
  to the terminal, granting colors from rustc/Cargo as well as Cargo's
  progress bar during a build.
---
 Cargo.lock            | 1547 +++++++++++++++++++++++++++++++++++++++++
 src/bindgen.rs        |    4 -
 src/build.rs          |   21 +-
 src/child.rs          |  167 +----
 src/command/build.rs  |   31 +-
 src/command/test.rs   |   33 +-
 src/command/utils.rs  |    7 +-
 src/license.rs        |    9 +-
 src/manifest/mod.rs   |    9 +-
 src/progressbar.rs    |    2 +-
 src/readme.rs         |   12 +-
 src/test/webdriver.rs |   42 +-
 12 files changed, 1637 insertions(+), 247 deletions(-)
 create mode 100644 Cargo.lock

diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..f14e2a3
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,1547 @@
+[[package]]
+name = "adler32"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "aho-corasick"
+version = "0.6.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "memchr 2.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "ansi_term"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "argon2rs"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "blake2-rfc 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scoped_threadpool 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "arrayvec"
+version = "0.4.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "nodrop 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "assert_cmd"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "escargot 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "predicates 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "predicates-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "predicates-tree 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "atty"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
+ "termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "autocfg"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "backtrace"
+version = "0.3.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "autocfg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "backtrace-sys 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-demangle 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "backtrace-sys"
+version = "0.1.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cc 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "binary-install"
+version = "0.0.1"
+dependencies = [
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+ "dirs 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "flate2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "siphasher 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tar 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zip 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
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+
+[[package]]
+name = "bitflags"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "blake2-rfc"
+version = "0.2.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "arrayvec 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "build_const"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "byteorder"
+version = "1.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "bzip2"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bzip2-sys 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "bzip2-sys"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cc 1.0.29 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.49 (registry+https://github.com/rust-lang/crates.io-index)",
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+
+[[package]]
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+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+
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+name = "clap"
+version = "2.32.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+]
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diff --git a/src/bindgen.rs b/src/bindgen.rs
index 630ffec..5d94260 100644
--- a/src/bindgen.rs
+++ b/src/bindgen.rs
@@ -178,11 +178,7 @@ pub fn wasm_bindgen_build(
     disable_dts: bool,
     target: &Target,
     profile: BuildProfile,
-    step: &Step,
 ) -> Result<(), failure::Error> {
-    let msg = format!("{}Running wasm-bindgen...", emoji::RUNNER);
-    PBAR.step(step, &msg);
-
     let release_or_debug = match profile {
         BuildProfile::Release | BuildProfile::Profiling => "release",
         BuildProfile::Dev => "debug",
diff --git a/src/build.rs b/src/build.rs
index 65bc1eb..7ec43d9 100644
--- a/src/build.rs
+++ b/src/build.rs
@@ -11,9 +11,7 @@ use std::str;
 use PBAR;
 
 /// Ensure that `rustc` is present and that it is >= 1.30.0
-pub fn check_rustc_version(step: &Step) -> Result<String, Error> {
-    let msg = format!("{}Checking `rustc` version...", emoji::CRAB);
-    PBAR.step(step, &msg);
+pub fn check_rustc_version() -> Result<String, Error> {
     let local_minor_version = rustc_minor_version();
     match local_minor_version {
         Some(mv) => {
@@ -52,7 +50,19 @@ fn rustc_minor_version() -> Option<u32> {
 /// Ensure that `rustup` has the `wasm32-unknown-unknown` target installed for
 /// current toolchain
 pub fn rustup_add_wasm_target(step: &Step) -> Result<(), Error> {
-    let msg = format!("{}Adding the Wasm target...", emoji::TARGET);
+    let mut cmd = Command::new("rustc");
+    cmd.arg("--print").arg("sysroot");
+    let output = child::run(cmd, "rustc").context("Learning about rustc's sysroot")?;
+    let sysroot = Path::new(output.trim());
+
+    // If this exists then we for sure have a wasm32 target so there's no need
+    // to progress further.
+    if sysroot.join("lib/rustlib/wasm32-unknown-unknown").exists() {
+        return Ok(());
+    }
+
+    // ... otherwise fall back to rustup to add the target
+    let msg = format!("{}Adding Wasm target...", emoji::TARGET);
     PBAR.step(step, &msg);
     let mut cmd = Command::new("rustup");
     cmd.arg("target").arg("add").arg("wasm32-unknown-unknown");
@@ -64,11 +74,8 @@ pub fn rustup_add_wasm_target(step: &Step) -> Result<(), Error> {
 pub fn cargo_build_wasm(
     path: &Path,
     profile: BuildProfile,
-    step: &Step,
     extra_options: &Vec<String>,
 ) -> Result<(), Error> {
-    let msg = format!("{}Compiling to Wasm...", emoji::CYCLONE);
-    PBAR.step(step, &msg);
     let mut cmd = Command::new("cargo");
     cmd.current_dir(path).arg("build").arg("--lib");
     match profile {
diff --git a/src/child.rs b/src/child.rs
index 7246ef6..ed5dabf 100644
--- a/src/child.rs
+++ b/src/child.rs
@@ -5,21 +5,7 @@
 
 use failure::Error;
 use log::info;
-use std::{
-    io::{self, Read},
-    mem,
-    process::{Command, Stdio},
-    string,
-    sync::mpsc,
-    thread,
-};
-use PBAR;
-
-#[derive(Debug)]
-enum OutputFragment {
-    Stdout(Vec<u8>),
-    Stderr(Vec<u8>),
-}
+use std::process::{Command, Stdio};
 
 /// Return a new Command object
 pub fn new_command(program: &str) -> Command {
@@ -37,151 +23,22 @@ pub fn new_command(program: &str) -> Command {
     }
 }
 
-/// Read data from the give reader and send it as an `OutputFragment` over the
-/// given sender.
-fn read_and_send<R, F>(
-    mut reader: R,
-    sender: &mpsc::Sender<OutputFragment>,
-    mut map: F,
-) -> io::Result<()>
-where
-    R: Read,
-    F: FnMut(Vec<u8>) -> OutputFragment,
-{
-    let mut buf = vec![0; 1024];
-    loop {
-        match reader.read(&mut buf) {
-            Err(e) => {
-                if e.kind() == io::ErrorKind::Interrupted {
-                    continue;
-                } else {
-                    return Err(e);
-                }
-            }
-            Ok(0) => return Ok(()),
-            Ok(n) => {
-                buf.truncate(n);
-                let buf = mem::replace(&mut buf, vec![0; 1024]);
-                sender.send(map(buf)).unwrap();
-            }
-        }
-    }
-}
-
-/// Accumulates output from a stream of output fragments and calls a callback on
-/// each complete line as it is accumulating.
-struct OutputAccumulator<F> {
-    result: String,
-    in_progress: Vec<u8>,
-    on_each_line: F,
-}
-
-impl<F> OutputAccumulator<F>
-where
-    F: FnMut(&str),
-{
-    /// Construct a new output accumulator with the given `on_each_line`
-    /// callback.
-    fn new(on_each_line: F) -> OutputAccumulator<F> {
-        OutputAccumulator {
-            result: String::new(),
-            in_progress: Vec::new(),
-            on_each_line,
-        }
-    }
-
-    /// Add another fragment of output to the accumulation, calling the
-    /// `on_each_line` callback for any complete lines we accumulate.
-    fn push(&mut self, fragment: Vec<u8>) -> Result<(), string::FromUtf8Error> {
-        debug_assert!(!fragment.is_empty());
-        self.in_progress.extend(fragment);
-
-        if let Some((last_newline, _)) = self
-            .in_progress
-            .iter()
-            .cloned()
-            .enumerate()
-            .rev()
-            .find(|(_, ch)| *ch == b'\n')
-        {
-            let next_in_progress: Vec<u8> = self.in_progress[last_newline + 1..].to_vec();
-            let mut these_lines = mem::replace(&mut self.in_progress, next_in_progress);
-            these_lines.truncate(last_newline + 1);
-            let these_lines = String::from_utf8(these_lines)?;
-            for line in these_lines.lines() {
-                (self.on_each_line)(line);
-            }
-            self.result.push_str(&these_lines);
-        }
-
-        Ok(())
-    }
-
-    /// Finish accumulation, run the `on_each_line` callback on the final line
-    /// (if any), and return the accumulated output.
-    fn finish(mut self) -> Result<String, string::FromUtf8Error> {
-        if !self.in_progress.is_empty() {
-            let last_line = String::from_utf8(self.in_progress)?;
-            (self.on_each_line)(&last_line);
-            self.result.push_str(&last_line);
-        }
-        Ok(self.result)
-    }
-}
-
 /// Run the given command and return its stdout.
 pub fn run(mut command: Command, command_name: &str) -> Result<String, Error> {
     info!("Running {:?}", command);
 
-    let mut child = command
-        .stdout(Stdio::piped())
-        .stderr(Stdio::piped())
-        .spawn()?;
-
-    let stdout = child.stdout.take().unwrap();
-    let stderr = child.stderr.take().unwrap();
-
-    let (send, recv) = mpsc::channel();
-    let stdout_send = send.clone();
-    let stderr_send = send;
-
-    // Because pipes have a fixed-size buffer, we need to keep reading stdout
-    // and stderr on a separate thread to avoid potential dead locks with
-    // waiting on the child process.
-
-    let stdout_handle =
-        thread::spawn(move || read_and_send(stdout, &stdout_send, OutputFragment::Stdout));
-    let stderr_handle =
-        thread::spawn(move || read_and_send(stderr, &stderr_send, OutputFragment::Stderr));
-
-    let mut stdout = OutputAccumulator::new(|line| {
-        info!("{} (stdout): {}", command_name, line);
-        PBAR.message(line)
-    });
-    let mut stderr = OutputAccumulator::new(|line| {
-        info!("{} (stderr): {}", command_name, line);
-        PBAR.message(line)
-    });
-
-    for output in recv {
-        match output {
-            OutputFragment::Stdout(line) => stdout.push(line)?,
-            OutputFragment::Stderr(line) => stderr.push(line)?,
-        };
-    }
-
-    let stdout = stdout.finish()?;
-    let stderr = stderr.finish()?;
-
-    // Join the threads reading the child's output to make sure the finish OK.
-    stdout_handle.join().unwrap()?;
-    stderr_handle.join().unwrap()?;
+    let output = command
+        .stderr(Stdio::inherit())
+        .stdin(Stdio::inherit())
+        .output()?;
 
-    let exit = child.wait()?;
-    if exit.success() {
-        Ok(stdout)
+    if output.status.success() {
+        Ok(String::from_utf8_lossy(&output.stdout).into_owned())
     } else {
-        drop((stdout, stderr));
-        bail!("failed to execute `{}`: exited with {}", command_name, exit)
+        bail!(
+            "failed to execute `{}`: exited with {}",
+            command_name,
+            output.status
+        )
     }
 }
diff --git a/src/command/build.rs b/src/command/build.rs
index b21345d..aa7d9f0 100644
--- a/src/command/build.rs
+++ b/src/command/build.rs
@@ -297,17 +297,17 @@ impl Build {
         }
     }
 
-    fn step_check_rustc_version(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_check_rustc_version(&mut self, _step: &Step) -> Result<(), Error> {
         info!("Checking rustc version...");
-        let version = build::check_rustc_version(step)?;
+        let version = build::check_rustc_version()?;
         let msg = format!("rustc version is {}.", version);
         info!("{}", &msg);
         Ok(())
     }
 
-    fn step_check_crate_config(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_check_crate_config(&mut self, _step: &Step) -> Result<(), Error> {
         info!("Checking crate configuration...");
-        self.crate_data.check_crate_config(step)?;
+        self.crate_data.check_crate_config()?;
         info!("Crate is correctly configured.");
         Ok(())
     }
@@ -319,9 +319,9 @@ impl Build {
         Ok(())
     }
 
-    fn step_build_wasm(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_build_wasm(&mut self, _step: &Step) -> Result<(), Error> {
         info!("Building wasm...");
-        build::cargo_build_wasm(&self.crate_path, self.profile, step, &self.extra_options)?;
+        build::cargo_build_wasm(&self.crate_path, self.profile, &self.extra_options)?;
 
         info!(
             "wasm built at {:#?}.",
@@ -334,21 +334,19 @@ impl Build {
         Ok(())
     }
 
-    fn step_create_dir(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_create_dir(&mut self, _step: &Step) -> Result<(), Error> {
         info!("Creating a pkg directory...");
-        create_pkg_dir(&self.out_dir, step)?;
+        create_pkg_dir(&self.out_dir)?;
         info!("Created a pkg directory at {:#?}.", &self.crate_path);
         Ok(())
     }
 
-    fn step_create_json(&mut self, step: &Step) -> Result<(), Error> {
-        info!("Writing a package.json...");
+    fn step_create_json(&mut self, _step: &Step) -> Result<(), Error> {
         self.crate_data.write_package_json(
             &self.out_dir,
             &self.scope,
             self.disable_dts,
             &self.target,
-            step,
         )?;
         info!(
             "Wrote a package.json at {:#?}.",
@@ -357,16 +355,16 @@ impl Build {
         Ok(())
     }
 
-    fn step_copy_readme(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_copy_readme(&mut self, _step: &Step) -> Result<(), Error> {
         info!("Copying readme from crate...");
-        readme::copy_from_crate(&self.crate_path, &self.out_dir, step)?;
+        readme::copy_from_crate(&self.crate_path, &self.out_dir)?;
         info!("Copied readme from crate to {:#?}.", &self.out_dir);
         Ok(())
     }
 
-    fn step_copy_license(&mut self, step: &Step) -> Result<(), failure::Error> {
+    fn step_copy_license(&mut self, _step: &Step) -> Result<(), failure::Error> {
         info!("Copying license from crate...");
-        license::copy_from_crate(&self.crate_data, &self.crate_path, &self.out_dir, step)?;
+        license::copy_from_crate(&self.crate_data, &self.crate_path, &self.out_dir)?;
         info!("Copied license from crate to {:#?}.", &self.out_dir);
         Ok(())
     }
@@ -388,7 +386,7 @@ impl Build {
         Ok(())
     }
 
-    fn step_run_wasm_bindgen(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_run_wasm_bindgen(&mut self, _step: &Step) -> Result<(), Error> {
         info!("Building the wasm bindings...");
         bindgen::wasm_bindgen_build(
             &self.crate_data,
@@ -397,7 +395,6 @@ impl Build {
             self.disable_dts,
             &self.target,
             self.profile,
-            step,
         )?;
         info!("wasm bindings were built at {:#?}.", &self.out_dir);
         Ok(())
diff --git a/src/command/test.rs b/src/command/test.rs
index 6235c12..85f945c 100644
--- a/src/command/test.rs
+++ b/src/command/test.rs
@@ -7,7 +7,6 @@ use build;
 use cache;
 use command::utils::set_crate_path;
 use console::style;
-use emoji;
 use failure::Error;
 use lockfile::Lockfile;
 use log::info;
@@ -16,7 +15,6 @@ use progressbar::Step;
 use std::path::PathBuf;
 use std::time::Instant;
 use test::{self, webdriver};
-use PBAR;
 
 #[derive(Debug, Default, StructOpt)]
 /// Everything required to configure the `wasm-pack test` command.
@@ -232,9 +230,9 @@ impl Test {
         }
     }
 
-    fn step_check_rustc_version(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_check_rustc_version(&mut self, _step: &Step) -> Result<(), Error> {
         info!("Checking rustc version...");
-        let _ = build::check_rustc_version(step)?;
+        let _ = build::check_rustc_version()?;
         info!("Rustc version is correct.");
         Ok(())
     }
@@ -246,12 +244,9 @@ impl Test {
         Ok(())
     }
 
-    fn step_build_tests(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_build_tests(&mut self, _step: &Step) -> Result<(), Error> {
         info!("Compiling tests to wasm...");
 
-        let msg = format!("{}Compiling tests to Wasm...", emoji::CYCLONE);
-        PBAR.step(step, &msg);
-
         build::cargo_build_wasm_tests(&self.crate_path, !self.release)?;
 
         info!("Finished compiling tests to wasm.");
@@ -301,10 +296,9 @@ impl Test {
         Ok(())
     }
 
-    fn step_test_node(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_test_node(&mut self, _step: &Step) -> Result<(), Error> {
         assert!(self.node);
         info!("Running tests in node...");
-        PBAR.step(step, "Running tests in node...");
         test::cargo_test_wasm(
             &self.crate_path,
             self.release,
@@ -319,19 +313,17 @@ impl Test {
     }
 
     fn step_get_chromedriver(&mut self, step: &Step) -> Result<(), Error> {
-        PBAR.step(step, "Getting chromedriver...");
         assert!(self.chrome && self.chromedriver.is_none());
 
         self.chromedriver = Some(webdriver::get_or_install_chromedriver(
             &self.cache,
             self.mode,
+            step,
         )?);
         Ok(())
     }
 
-    fn step_test_chrome(&mut self, step: &Step) -> Result<(), Error> {
-        PBAR.step(step, "Running tests in Chrome...");
-
+    fn step_test_chrome(&mut self, _step: &Step) -> Result<(), Error> {
         let chromedriver = self.chromedriver.as_ref().unwrap().display().to_string();
         let chromedriver = chromedriver.as_str();
         info!(
@@ -361,19 +353,17 @@ impl Test {
     }
 
     fn step_get_geckodriver(&mut self, step: &Step) -> Result<(), Error> {
-        PBAR.step(step, "Getting geckodriver...");
         assert!(self.firefox && self.geckodriver.is_none());
 
         self.geckodriver = Some(webdriver::get_or_install_geckodriver(
             &self.cache,
             self.mode,
+            step,
         )?);
         Ok(())
     }
 
-    fn step_test_firefox(&mut self, step: &Step) -> Result<(), Error> {
-        PBAR.step(step, "Running tests in Firefox...");
-
+    fn step_test_firefox(&mut self, _step: &Step) -> Result<(), Error> {
         let geckodriver = self.geckodriver.as_ref().unwrap().display().to_string();
         let geckodriver = geckodriver.as_str();
         info!(
@@ -402,17 +392,14 @@ impl Test {
         Ok(())
     }
 
-    fn step_get_safaridriver(&mut self, step: &Step) -> Result<(), Error> {
-        PBAR.step(step, "Getting safaridriver...");
+    fn step_get_safaridriver(&mut self, _step: &Step) -> Result<(), Error> {
         assert!(self.safari && self.safaridriver.is_none());
 
         self.safaridriver = Some(webdriver::get_safaridriver()?);
         Ok(())
     }
 
-    fn step_test_safari(&mut self, step: &Step) -> Result<(), Error> {
-        PBAR.step(step, "Running tests in Safari...");
-
+    fn step_test_safari(&mut self, _step: &Step) -> Result<(), Error> {
         let safaridriver = self.safaridriver.as_ref().unwrap().display().to_string();
         let safaridriver = safaridriver.as_str();
         info!(
diff --git a/src/command/utils.rs b/src/command/utils.rs
index 0668a55..337bdc5 100644
--- a/src/command/utils.rs
+++ b/src/command/utils.rs
@@ -1,13 +1,10 @@
 //! Utility functions for commands.
 
-use emoji;
 use failure;
-use progressbar::Step;
 use std::fs;
 use std::path::{Path, PathBuf};
 use std::time::Duration;
 use walkdir::WalkDir;
-use PBAR;
 
 /// If an explicit path is given, then use it, otherwise assume the current
 /// directory is the crate path.
@@ -16,9 +13,7 @@ pub fn set_crate_path(path: Option<PathBuf>) -> Result<PathBuf, failure::Error>
 }
 
 /// Construct our `pkg` directory in the crate.
-pub fn create_pkg_dir(out_dir: &Path, step: &Step) -> Result<(), failure::Error> {
-    let msg = format!("{}Creating a pkg directory...", emoji::FOLDER);
-    PBAR.step(step, &msg);
+pub fn create_pkg_dir(out_dir: &Path) -> Result<(), failure::Error> {
     fs::create_dir_all(&out_dir)?;
     fs::write(out_dir.join(".gitignore"), "*")?;
     Ok(())
diff --git a/src/license.rs b/src/license.rs
index ee5f20b..4297344 100644
--- a/src/license.rs
+++ b/src/license.rs
@@ -4,10 +4,8 @@ use failure;
 use std::fs;
 use std::path::Path;
 
-use emoji;
 use glob::glob;
 use manifest::CrateData;
-use progressbar::Step;
 use PBAR;
 
 fn glob_license_files(path: &Path) -> Result<Vec<String>, failure::Error> {
@@ -45,7 +43,6 @@ pub fn copy_from_crate(
     crate_data: &CrateData,
     path: &Path,
     out_dir: &Path,
-    step: &Step,
 ) -> Result<(), failure::Error> {
     assert!(
         fs::metadata(path).ok().map_or(false, |m| m.is_dir()),
@@ -59,8 +56,6 @@ pub fn copy_from_crate(
 
     match (crate_data.crate_license(), crate_data.crate_license_file()) {
         (Some(_), _) => {
-            let msg = format!("{}Copying over your LICENSE...", emoji::DANCERS);
-            PBAR.step(step, &msg);
             let license_files = glob_license_files(path);
 
             match license_files {
@@ -87,9 +82,7 @@ pub fn copy_from_crate(
                 PBAR.info("origin crate has no LICENSE");
             }
         }
-        (None, None) => {
-            PBAR.step(step, "No LICENSE found in Cargo.toml, skipping...");
-        }
+        (None, None) => {}
     };
 
     Ok(())
diff --git a/src/manifest/mod.rs b/src/manifest/mod.rs
index ea376a4..bc54206 100644
--- a/src/manifest/mod.rs
+++ b/src/manifest/mod.rs
@@ -14,7 +14,6 @@ use cargo_metadata::Metadata;
 use command::build::{BuildProfile, Target};
 use emoji;
 use failure::{Error, ResultExt};
-use progressbar::Step;
 use serde::{self, Deserialize};
 use serde_json;
 use std::collections::BTreeSet;
@@ -312,9 +311,7 @@ impl CrateData {
     }
 
     /// Check that the crate the given path is properly configured.
-    pub fn check_crate_config(&self, step: &Step) -> Result<(), Error> {
-        let msg = format!("{}Checking crate configuration...", emoji::WRENCH);
-        PBAR.step(&step, &msg);
+    pub fn check_crate_config(&self) -> Result<(), Error> {
         self.check_crate_type()?;
         Ok(())
     }
@@ -378,11 +375,7 @@ impl CrateData {
         scope: &Option<String>,
         disable_dts: bool,
         target: &Target,
-        step: &Step,
     ) -> Result<(), Error> {
-        let msg = format!("{}Writing a package.json...", emoji::MEMO);
-
-        PBAR.step(step, &msg);
         let pkg_file_path = out_dir.join("package.json");
         let npm_data = match target {
             Target::Nodejs => self.to_commonjs(scope, disable_dts, out_dir),
diff --git a/src/progressbar.rs b/src/progressbar.rs
index a7cb11f..acc1448 100644
--- a/src/progressbar.rs
+++ b/src/progressbar.rs
@@ -81,7 +81,7 @@ impl Step {
 
 impl fmt::Display for Step {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "[{}/{}]", self.current, self.total)
+        write!(f, "{}", emoji::INFO)
     }
 }
 
diff --git a/src/readme.rs b/src/readme.rs
index 2eec060..6e1c57f 100644
--- a/src/readme.rs
+++ b/src/readme.rs
@@ -1,15 +1,13 @@
 //! Generating `README` files for the packaged wasm.
 
-use failure;
+use failure::{self, ResultExt};
 use std::fs;
 use std::path::Path;
 
-use emoji;
-use progressbar::Step;
 use PBAR;
 
 /// Copy the crate's README into the `pkg` directory.
-pub fn copy_from_crate(path: &Path, out_dir: &Path, step: &Step) -> Result<(), failure::Error> {
+pub fn copy_from_crate(path: &Path, out_dir: &Path) -> Result<(), failure::Error> {
     assert!(
         fs::metadata(path).ok().map_or(false, |m| m.is_dir()),
         "crate directory should exist"
@@ -19,11 +17,11 @@ pub fn copy_from_crate(path: &Path, out_dir: &Path, step: &Step) -> Result<(), f
         "crate's pkg directory should exist"
     );
 
-    let msg = format!("{}Copying over your README...", emoji::DANCERS);
-    PBAR.step(step, &msg);
     let crate_readme_path = path.join("README.md");
     let new_readme_path = out_dir.join("README.md");
-    if fs::copy(&crate_readme_path, &new_readme_path).is_err() {
+    if crate_readme_path.exists() {
+        fs::copy(&crate_readme_path, &new_readme_path).context("failed to copy README")?;
+    } else {
         PBAR.warn("origin crate has no README");
     }
     Ok(())
diff --git a/src/test/webdriver.rs b/src/test/webdriver.rs
index 1dfe1a1..6a645e9 100644
--- a/src/test/webdriver.rs
+++ b/src/test/webdriver.rs
@@ -1,16 +1,38 @@
 //! Getting WebDriver client binaries.
 
+use crate::progressbar::Step;
 use binary_install::Cache;
 use command::build::BuildMode;
 use failure;
 use std::path::PathBuf;
 use target;
+use PBAR;
+
+fn get_and_notify(
+    cache: &Cache,
+    installation_allowed: bool,
+    name: &str,
+    url: &str,
+    step: &Step,
+) -> Result<Option<PathBuf>, failure::Error> {
+    if let Some(dl) = cache.download(false, name, &[name], &url)? {
+        return Ok(Some(dl.binary(name)?));
+    }
+    if installation_allowed {
+        PBAR.step(step, &format!("Getting {}...", name));
+    }
+    match cache.download(installation_allowed, name, &[name], &url)? {
+        Some(dl) => Ok(Some(dl.binary(name)?)),
+        None => Ok(None),
+    }
+}
 
 /// Get the path to an existing `chromedriver`, or install it if no existing
 /// binary is found.
 pub fn get_or_install_chromedriver(
     cache: &Cache,
     mode: BuildMode,
+    step: &Step,
 ) -> Result<PathBuf, failure::Error> {
     if let Ok(path) = which::which("chromedriver") {
         return Ok(path);
@@ -19,13 +41,14 @@ pub fn get_or_install_chromedriver(
         BuildMode::Noinstall => false,
         _ => true,
     };
-    install_chromedriver(cache, installation_allowed)
+    install_chromedriver(cache, installation_allowed, step)
 }
 
 /// Download and install a pre-built `chromedriver` binary.
 pub fn install_chromedriver(
     cache: &Cache,
     installation_allowed: bool,
+    step: &Step,
 ) -> Result<PathBuf, failure::Error> {
     let target = if target::LINUX && target::x86_64 {
         "linux64"
@@ -41,13 +64,8 @@ pub fn install_chromedriver(
         "https://chromedriver.storage.googleapis.com/2.46/chromedriver_{}.zip",
         target
     );
-    match cache.download(
-        installation_allowed,
-        "chromedriver",
-        &["chromedriver"],
-        &url,
-    )? {
-        Some(dl) => Ok(dl.binary("chromedriver")?),
+    match get_and_notify(cache, installation_allowed, "chromedriver", &url, step)? {
+        Some(path) => Ok(path),
         None => bail!(
             "No cached `chromedriver` binary found, and could not find a global \
              `chromedriver` on the `$PATH`. Not installing `chromedriver` because of noinstall \
@@ -61,6 +79,7 @@ pub fn install_chromedriver(
 pub fn get_or_install_geckodriver(
     cache: &Cache,
     mode: BuildMode,
+    step: &Step,
 ) -> Result<PathBuf, failure::Error> {
     if let Ok(path) = which::which("geckodriver") {
         return Ok(path);
@@ -69,13 +88,14 @@ pub fn get_or_install_geckodriver(
         BuildMode::Noinstall => false,
         _ => true,
     };
-    install_geckodriver(cache, installation_allowed)
+    install_geckodriver(cache, installation_allowed, step)
 }
 
 /// Download and install a pre-built `geckodriver` binary.
 pub fn install_geckodriver(
     cache: &Cache,
     installation_allowed: bool,
+    step: &Step,
 ) -> Result<PathBuf, failure::Error> {
     let (target, ext) = if target::LINUX && target::x86 {
         ("linux32", "tar.gz")
@@ -96,8 +116,8 @@ pub fn install_geckodriver(
         target,
         ext,
     );
-    match cache.download(installation_allowed, "geckodriver", &["geckodriver"], &url)? {
-        Some(dl) => Ok(dl.binary("geckodriver")?),
+    match get_and_notify(cache, installation_allowed, "geckodriver", &url, step)? {
+        Some(path) => Ok(path),
         None => bail!(
             "No cached `geckodriver` binary found, and could not find a global `geckodriver` \
              on the `$PATH`. Not installing `geckodriver` because of noinstall mode."

From 66a9b7028219c304af07d7776b33fcf038c40592 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Wed, 27 Feb 2019 09:17:10 -0800
Subject: [PATCH 03/10] Fix tests

---
 tests/all/license.rs       | 15 +++------
 tests/all/manifest.rs      | 69 ++++++++++++++------------------------
 tests/all/readme.rs        |  6 ++--
 tests/all/utils/fixture.rs | 10 +++---
 tests/all/webdriver.rs     |  6 ++--
 5 files changed, 43 insertions(+), 63 deletions(-)

diff --git a/tests/all/license.rs b/tests/all/license.rs
index 75dcd5c..f56f650 100644
--- a/tests/all/license.rs
+++ b/tests/all/license.rs
@@ -14,8 +14,7 @@ fn it_copies_a_license_default_path() {
     fs::create_dir(&out_dir).expect("should create pkg directory OK");
     let crate_data = CrateData::new(&fixture.path);
 
-    let step = wasm_pack::progressbar::Step::new(1);
-    assert!(license::copy_from_crate(&crate_data.unwrap(), &fixture.path, &out_dir, &step).is_ok());
+    assert!(license::copy_from_crate(&crate_data.unwrap(), &fixture.path, &out_dir).is_ok());
 
     let crate_license_path = fixture.path.join("LICENSE");
     let pkg_license_path = out_dir.join("LICENSE");
@@ -40,8 +39,7 @@ fn it_copies_a_license_provided_path() {
     fs::create_dir(&out_dir).expect("should create pkg directory OK");
     let crate_data = CrateData::new(&fixture.path);
 
-    let step = wasm_pack::progressbar::Step::new(1);
-    assert!(license::copy_from_crate(&crate_data.unwrap(), &fixture.path, &out_dir, &step).is_ok());
+    assert!(license::copy_from_crate(&crate_data.unwrap(), &fixture.path, &out_dir).is_ok());
     let crate_license_path = fixture.path.join("LICENSE");
     let pkg_license_path = out_dir.join("LICENSE");
     println!(
@@ -64,8 +62,7 @@ fn it_copies_all_licenses_default_path() {
     fs::create_dir(&out_dir).expect("should create pkg directory OK");
     let crate_data = CrateData::new(&fixture.path);
 
-    let step = wasm_pack::progressbar::Step::new(1);
-    assert!(license::copy_from_crate(&crate_data.unwrap(), &fixture.path, &out_dir, &step).is_ok());
+    assert!(license::copy_from_crate(&crate_data.unwrap(), &fixture.path, &out_dir).is_ok());
 
     let crate_license_path = fixture.path.join("LICENSE-WTFPL");
     let pkg_license_path = out_dir.join("LICENSE-WTFPL");
@@ -100,8 +97,7 @@ fn it_copies_all_licenses_provided_path() {
     fs::create_dir(&out_dir).expect("should create pkg directory OK");
     let crate_data = CrateData::new(&fixture.path);
 
-    let step = wasm_pack::progressbar::Step::new(1);
-    assert!(license::copy_from_crate(&crate_data.unwrap(), &fixture.path, &out_dir, &step).is_ok());
+    assert!(license::copy_from_crate(&crate_data.unwrap(), &fixture.path, &out_dir).is_ok());
 
     let crate_license_path = fixture.path.join("LICENSE-WTFPL");
     let pkg_license_path = out_dir.join("LICENSE-WTFPL");
@@ -137,8 +133,7 @@ fn it_copies_a_non_standard_license_provided_path() {
     fs::create_dir(&out_dir).expect("should create pkg directory OK");
     let crate_data = CrateData::new(&fixture.path);
 
-    let step = wasm_pack::progressbar::Step::new(1);
-    assert!(license::copy_from_crate(&crate_data.unwrap(), &fixture.path, &out_dir, &step).is_ok());
+    assert!(license::copy_from_crate(&crate_data.unwrap(), &fixture.path, &out_dir).is_ok());
 
     let crate_license_path = fixture.path.join(license_file);
     let pkg_license_path = out_dir.join(license_file);
diff --git a/tests/all/manifest.rs b/tests/all/manifest.rs
index 6c274d2..0298ed5 100644
--- a/tests/all/manifest.rs
+++ b/tests/all/manifest.rs
@@ -27,8 +27,7 @@ fn it_checks_has_cdylib_default_path() {
     // Ensure that there is a `Cargo.lock`.
     fixture.cargo_check();
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    assert!(crate_data.check_crate_config(&step).is_err());
+    assert!(crate_data.check_crate_config().is_err());
 }
 
 #[test]
@@ -37,16 +36,14 @@ fn it_checks_has_cdylib_provided_path() {
     // Ensure that there is a `Cargo.lock`.
     fixture.cargo_check();
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    crate_data.check_crate_config(&step).unwrap();
+    crate_data.check_crate_config().unwrap();
 }
 
 #[test]
 fn it_checks_has_cdylib_wrong_crate_type() {
     let fixture = fixture::bad_cargo_toml();
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    assert!(crate_data.check_crate_config(&step).is_err());
+    assert!(crate_data.check_crate_config().is_err());
 }
 
 #[test]
@@ -55,8 +52,7 @@ fn it_recognizes_a_map_during_depcheck() {
     // Ensure that there is a `Cargo.lock`.
     fixture.cargo_check();
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    crate_data.check_crate_config(&step).unwrap();
+    crate_data.check_crate_config().unwrap();
 }
 
 #[test]
@@ -64,10 +60,9 @@ fn it_creates_a_package_json_default_path() {
     let fixture = fixture::js_hello_world();
     let out_dir = fixture.path.join("pkg");
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    wasm_pack::command::utils::create_pkg_dir(&out_dir, &step).unwrap();
+    wasm_pack::command::utils::create_pkg_dir(&out_dir).unwrap();
     assert!(crate_data
-        .write_package_json(&out_dir, &None, false, &Target::Bundler, &step)
+        .write_package_json(&out_dir, &None, false, &Target::Bundler)
         .is_ok());
     let package_json_path = &fixture.path.join("pkg").join("package.json");
     fs::metadata(package_json_path).unwrap();
@@ -100,10 +95,9 @@ fn it_creates_a_package_json_provided_path() {
     let fixture = fixture::js_hello_world();
     let out_dir = fixture.path.join("pkg");
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    wasm_pack::command::utils::create_pkg_dir(&out_dir, &step).unwrap();
+    wasm_pack::command::utils::create_pkg_dir(&out_dir).unwrap();
     assert!(crate_data
-        .write_package_json(&out_dir, &None, false, &Target::Bundler, &step)
+        .write_package_json(&out_dir, &None, false, &Target::Bundler)
         .is_ok());
     let package_json_path = &fixture.path.join("pkg").join("package.json");
     fs::metadata(package_json_path).unwrap();
@@ -129,15 +123,13 @@ fn it_creates_a_package_json_provided_path_with_scope() {
     let fixture = fixture::js_hello_world();
     let out_dir = fixture.path.join("pkg");
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    wasm_pack::command::utils::create_pkg_dir(&out_dir, &step).unwrap();
+    wasm_pack::command::utils::create_pkg_dir(&out_dir).unwrap();
     assert!(crate_data
         .write_package_json(
             &out_dir,
             &Some("test".to_string()),
             false,
             &Target::Bundler,
-            &step
         )
         .is_ok());
     let package_json_path = &fixture.path.join("pkg").join("package.json");
@@ -164,10 +156,9 @@ fn it_creates_a_pkg_json_with_correct_files_on_node() {
     let fixture = fixture::js_hello_world();
     let out_dir = fixture.path.join("pkg");
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    wasm_pack::command::utils::create_pkg_dir(&out_dir, &step).unwrap();
+    wasm_pack::command::utils::create_pkg_dir(&out_dir).unwrap();
     assert!(crate_data
-        .write_package_json(&out_dir, &None, false, &Target::Nodejs, &step)
+        .write_package_json(&out_dir, &None, false, &Target::Nodejs)
         .is_ok());
     let package_json_path = &out_dir.join("package.json");
     fs::metadata(package_json_path).unwrap();
@@ -200,10 +191,9 @@ fn it_creates_a_pkg_json_with_correct_files_on_nomodules() {
     let fixture = fixture::js_hello_world();
     let out_dir = fixture.path.join("pkg");
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    wasm_pack::command::utils::create_pkg_dir(&out_dir, &step).unwrap();
+    wasm_pack::command::utils::create_pkg_dir(&out_dir).unwrap();
     assert!(crate_data
-        .write_package_json(&out_dir, &None, false, &Target::NoModules, &step)
+        .write_package_json(&out_dir, &None, false, &Target::NoModules)
         .is_ok());
     let package_json_path = &out_dir.join("package.json");
     fs::metadata(package_json_path).unwrap();
@@ -235,10 +225,9 @@ fn it_creates_a_pkg_json_in_out_dir() {
     let fixture = fixture::js_hello_world();
     let out_dir = fixture.path.join("./custom/out");
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    wasm_pack::command::utils::create_pkg_dir(&out_dir, &step).unwrap();
+    wasm_pack::command::utils::create_pkg_dir(&out_dir).unwrap();
     assert!(crate_data
-        .write_package_json(&out_dir, &None, false, &Target::Bundler, &step)
+        .write_package_json(&out_dir, &None, false, &Target::Bundler)
         .is_ok());
 
     let package_json_path = &fixture.path.join(&out_dir).join("package.json");
@@ -251,10 +240,9 @@ fn it_creates_a_package_json_with_correct_keys_when_types_are_skipped() {
     let fixture = fixture::js_hello_world();
     let out_dir = fixture.path.join("pkg");
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    wasm_pack::command::utils::create_pkg_dir(&out_dir, &step).unwrap();
+    wasm_pack::command::utils::create_pkg_dir(&out_dir).unwrap();
     assert!(crate_data
-        .write_package_json(&out_dir, &None, true, &Target::Bundler, &step)
+        .write_package_json(&out_dir, &None, true, &Target::Bundler)
         .is_ok());
     let package_json_path = &out_dir.join("package.json");
     fs::metadata(package_json_path).unwrap();
@@ -280,8 +268,7 @@ fn it_creates_a_package_json_with_correct_keys_when_types_are_skipped() {
 fn it_errors_when_wasm_bindgen_is_not_declared() {
     let fixture = fixture::bad_cargo_toml();
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    assert!(crate_data.check_crate_config(&step).is_err());
+    assert!(crate_data.check_crate_config().is_err());
 }
 
 #[test]
@@ -314,10 +301,9 @@ fn it_sets_homepage_field_if_available_in_cargo_toml() {
     let out_dir = fixture.path.join("pkg");
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
 
-    let step = wasm_pack::progressbar::Step::new(2);
-    wasm_pack::command::utils::create_pkg_dir(&out_dir, &step).unwrap();
+    wasm_pack::command::utils::create_pkg_dir(&out_dir).unwrap();
     crate_data
-        .write_package_json(&out_dir, &None, true, &Target::Bundler, &step)
+        .write_package_json(&out_dir, &None, true, &Target::Bundler)
         .unwrap();
 
     let pkg = utils::manifest::read_package_json(&fixture.path, &out_dir).unwrap();
@@ -331,10 +317,9 @@ fn it_sets_homepage_field_if_available_in_cargo_toml() {
     let out_dir = fixture.path.join("pkg");
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
 
-    let step = wasm_pack::progressbar::Step::new(2);
-    wasm_pack::command::utils::create_pkg_dir(&out_dir, &step).unwrap();
+    wasm_pack::command::utils::create_pkg_dir(&out_dir).unwrap();
     crate_data
-        .write_package_json(&out_dir, &None, true, &Target::Bundler, &step)
+        .write_package_json(&out_dir, &None, true, &Target::Bundler)
         .unwrap();
 
     let pkg = utils::manifest::read_package_json(&fixture.path, &out_dir).unwrap();
@@ -347,8 +332,7 @@ fn it_does_not_error_when_wasm_bindgen_is_declared() {
     // Ensure that there is a `Cargo.lock`.
     fixture.cargo_check();
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
-    let step = wasm_pack::progressbar::Step::new(1);
-    crate_data.check_crate_config(&step).unwrap();
+    crate_data.check_crate_config().unwrap();
 }
 
 #[test]
@@ -433,11 +417,10 @@ fn it_lists_license_files_in_files_field_of_package_json() {
 
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
 
-    let step = wasm_pack::progressbar::Step::new(3);
-    wasm_pack::command::utils::create_pkg_dir(&out_dir, &step).unwrap();
-    license::copy_from_crate(&crate_data, &fixture.path, &out_dir, &step).unwrap();
+    wasm_pack::command::utils::create_pkg_dir(&out_dir).unwrap();
+    license::copy_from_crate(&crate_data, &fixture.path, &out_dir).unwrap();
     crate_data
-        .write_package_json(&out_dir, &None, false, &Target::Bundler, &step)
+        .write_package_json(&out_dir, &None, false, &Target::Bundler)
         .unwrap();
 
     let package_json_path = &fixture.path.join("pkg").join("package.json");
diff --git a/tests/all/readme.rs b/tests/all/readme.rs
index af2fbcd..8576f33 100644
--- a/tests/all/readme.rs
+++ b/tests/all/readme.rs
@@ -12,8 +12,7 @@ fn it_copies_a_readme_default_path() {
     let out_dir = fixture.path.join("pkg");
     fs::create_dir(&out_dir).expect("should create pkg directory OK");
 
-    let step = wasm_pack::progressbar::Step::new(1);
-    assert!(readme::copy_from_crate(&fixture.path, &out_dir, &step).is_ok());
+    assert!(readme::copy_from_crate(&fixture.path, &out_dir).is_ok());
 
     let crate_readme_path = fixture.path.join("README.md");
     let pkg_readme_path = out_dir.join("README.md");
@@ -37,8 +36,7 @@ fn it_copies_a_readme_provided_path() {
     let out_dir = fixture.path.join("pkg");
     fs::create_dir(&out_dir).expect("should create pkg directory OK");
 
-    let step = wasm_pack::progressbar::Step::new(1);
-    assert!(readme::copy_from_crate(&fixture.path, &out_dir, &step).is_ok());
+    assert!(readme::copy_from_crate(&fixture.path, &out_dir).is_ok());
     let crate_readme_path = fixture.path.join("README.md");
     let pkg_readme_path = out_dir.join("README.md");
     println!(
diff --git a/tests/all/utils/fixture.rs b/tests/all/utils/fixture.rs
index fced91c..11c323e 100644
--- a/tests/all/utils/fixture.rs
+++ b/tests/all/utils/fixture.rs
@@ -245,10 +245,11 @@ impl Fixture {
         let cache = self.cache();
 
         // like above for synchronization
+        let step = wasm_pack::progressbar::Step::new(1);
         FETCH_GECKODRIVER.call_once(|| {
-            wasm_pack::test::webdriver::install_geckodriver(&cache, true).unwrap();
+            wasm_pack::test::webdriver::install_geckodriver(&cache, true, &step).unwrap();
         });
-        wasm_pack::test::webdriver::install_geckodriver(&cache, true).unwrap()
+        wasm_pack::test::webdriver::install_geckodriver(&cache, true, &step).unwrap()
     }
 
     /// Download `chromedriver` and return its path.
@@ -260,10 +261,11 @@ impl Fixture {
         let cache = self.cache();
 
         // like above for synchronization
+        let step = wasm_pack::progressbar::Step::new(1);
         FETCH_CHROMEDRIVER.call_once(|| {
-            wasm_pack::test::webdriver::install_chromedriver(&cache, true).unwrap();
+            wasm_pack::test::webdriver::install_chromedriver(&cache, true, &step).unwrap();
         });
-        wasm_pack::test::webdriver::install_chromedriver(&cache, true).unwrap()
+        wasm_pack::test::webdriver::install_chromedriver(&cache, true, &step).unwrap()
     }
 
     pub fn cache_dir(&self) -> PathBuf {
diff --git a/tests/all/webdriver.rs b/tests/all/webdriver.rs
index 6223290..15f84e3 100644
--- a/tests/all/webdriver.rs
+++ b/tests/all/webdriver.rs
@@ -12,7 +12,8 @@ use wasm_pack::test::webdriver;
 fn can_install_chromedriver() {
     let fixture = fixture::js_hello_world();
     let cache = Cache::at(&fixture.path);
-    assert!(webdriver::install_chromedriver(&cache, true).is_ok());
+    let step = wasm_pack::progressbar::Step::new(1);
+    assert!(webdriver::install_chromedriver(&cache, true, &step).is_ok());
 }
 
 #[test]
@@ -26,5 +27,6 @@ fn can_install_chromedriver() {
 fn can_install_geckodriver() {
     let fixture = fixture::js_hello_world();
     let cache = Cache::at(&fixture.path);
-    assert!(webdriver::install_geckodriver(&cache, true).is_ok());
+    let step = wasm_pack::progressbar::Step::new(1);
+    assert!(webdriver::install_geckodriver(&cache, true, &step).is_ok());
 }

From 116c456a19d93a141d99c3584ac565315e9c8ab8 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Wed, 27 Feb 2019 09:19:35 -0800
Subject: [PATCH 04/10] Add back in "Compiling for Wasm ..."

---
 src/build.rs         | 3 +++
 src/command/build.rs | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/build.rs b/src/build.rs
index 7ec43d9..6c46ac4 100644
--- a/src/build.rs
+++ b/src/build.rs
@@ -74,8 +74,11 @@ pub fn rustup_add_wasm_target(step: &Step) -> Result<(), Error> {
 pub fn cargo_build_wasm(
     path: &Path,
     profile: BuildProfile,
+    step: &Step,
     extra_options: &Vec<String>,
 ) -> Result<(), Error> {
+    let msg = format!("{}Compiling to Wasm...", emoji::CYCLONE);
+    PBAR.step(step, &msg);
     let mut cmd = Command::new("cargo");
     cmd.current_dir(path).arg("build").arg("--lib");
     match profile {
diff --git a/src/command/build.rs b/src/command/build.rs
index aa7d9f0..5dabf3d 100644
--- a/src/command/build.rs
+++ b/src/command/build.rs
@@ -319,9 +319,9 @@ impl Build {
         Ok(())
     }
 
-    fn step_build_wasm(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_build_wasm(&mut self, step: &Step) -> Result<(), Error> {
         info!("Building wasm...");
-        build::cargo_build_wasm(&self.crate_path, self.profile, &self.extra_options)?;
+        build::cargo_build_wasm(&self.crate_path, self.profile, step, &self.extra_options)?;
 
         info!(
             "wasm built at {:#?}.",

From 7c8d1a80a8cf7c4c53413087bbd6e6875dd183a3 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Wed, 27 Feb 2019 09:43:17 -0800
Subject: [PATCH 05/10] Don't always capture stdout, selectively do it

Add a separate function for running a child and capturing stdout
---
 src/bindgen.rs    |  2 +-
 src/build.rs      |  3 ++-
 src/child.rs      | 19 ++++++++++++++++++-
 tests/all/test.rs |  6 +++---
 4 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/src/bindgen.rs b/src/bindgen.rs
index 5d94260..58c5d85 100644
--- a/src/bindgen.rs
+++ b/src/bindgen.rs
@@ -231,7 +231,7 @@ pub fn wasm_bindgen_build(
 fn wasm_bindgen_version_check(bindgen_path: &PathBuf, dep_version: &str) -> bool {
     let mut cmd = Command::new(bindgen_path);
     cmd.arg("--version");
-    child::run(cmd, "wasm-bindgen")
+    child::run_capture_stdout(cmd, "wasm-bindgen")
         .map(|stdout| {
             stdout
                 .trim()
diff --git a/src/build.rs b/src/build.rs
index 6c46ac4..ef0f159 100644
--- a/src/build.rs
+++ b/src/build.rs
@@ -52,7 +52,8 @@ fn rustc_minor_version() -> Option<u32> {
 pub fn rustup_add_wasm_target(step: &Step) -> Result<(), Error> {
     let mut cmd = Command::new("rustc");
     cmd.arg("--print").arg("sysroot");
-    let output = child::run(cmd, "rustc").context("Learning about rustc's sysroot")?;
+    let output =
+        child::run_capture_stdout(cmd, "rustc").context("Learning about rustc's sysroot")?;
     let sysroot = Path::new(output.trim());
 
     // If this exists then we for sure have a wasm32 target so there's no need
diff --git a/src/child.rs b/src/child.rs
index ed5dabf..a5cfce8 100644
--- a/src/child.rs
+++ b/src/child.rs
@@ -24,7 +24,24 @@ pub fn new_command(program: &str) -> Command {
 }
 
 /// Run the given command and return its stdout.
-pub fn run(mut command: Command, command_name: &str) -> Result<String, Error> {
+pub fn run(mut command: Command, command_name: &str) -> Result<(), Error> {
+    info!("Running {:?}", command);
+
+    let status = command.status()?;
+
+    if status.success() {
+        Ok(())
+    } else {
+        bail!(
+            "failed to execute `{}`: exited with {}",
+            command_name,
+            status
+        )
+    }
+}
+
+/// Run the given command and return its stdout.
+pub fn run_capture_stdout(mut command: Command, command_name: &str) -> Result<String, Error> {
     info!("Running {:?}", command);
 
     let output = command
diff --git a/tests/all/test.rs b/tests/all/test.rs
index 04f1210..e0e204a 100644
--- a/tests/all/test.rs
+++ b/tests/all/test.rs
@@ -331,9 +331,9 @@ fn test_output_is_printed_once_in_both_stdout_and_failures() {
         .arg("--node")
         .assert()
         .failure()
-        .stderr(predicate::function(|err: &str| {
-            // but the err string will capture both stdout and failures,
+        .stdout(predicate::function(|out: &str| {
+            // but the out string will capture both stdout and failures,
             // so we will get a log that count twice
-            err.matches("YABBA DABBA DOO").count() == log_cnt * 2
+            out.matches("YABBA DABBA DOO").count() == log_cnt * 2
         }));
 }

From b710fde193ca4c1335bbec61df976ba52222ddbf Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Fri, 1 Mar 2019 09:35:45 -0800
Subject: [PATCH 06/10] Remove the no longer needed `Step` type

While historically used to count steps in stages the count is no longer
present in the output so this should no longer be necessary.
---
 src/bindgen.rs             |  4 +---
 src/build.rs               |  8 +++-----
 src/command/build.rs       | 34 +++++++++++++++-------------------
 src/command/test.rs        | 35 +++++++++++++++--------------------
 src/progressbar.rs         | 32 ++------------------------------
 src/test/webdriver.rs      | 16 +++++-----------
 tests/all/utils/fixture.rs | 10 ++++------
 tests/all/webdriver.rs     |  6 ++----
 8 files changed, 47 insertions(+), 98 deletions(-)

diff --git a/src/bindgen.rs b/src/bindgen.rs
index 58c5d85..4b3a629 100644
--- a/src/bindgen.rs
+++ b/src/bindgen.rs
@@ -8,7 +8,6 @@ use failure::{self, ResultExt};
 use log::debug;
 use log::{info, warn};
 use manifest::CrateData;
-use progressbar::Step;
 use std::env;
 use std::fs;
 use std::path::{Path, PathBuf};
@@ -27,7 +26,6 @@ pub fn install_wasm_bindgen(
     cache: &Cache,
     version: &str,
     install_permitted: bool,
-    step: &Step,
 ) -> Result<Download, failure::Error> {
     // If `wasm-bindgen` is installed globally and it has the right version, use
     // that. Assume that other tools are installed next to it.
@@ -42,7 +40,7 @@ pub fn install_wasm_bindgen(
     }
 
     let msg = format!("{}Installing wasm-bindgen...", emoji::DOWN_ARROW);
-    PBAR.step(step, &msg);
+    PBAR.step(&msg);
 
     let dl = download_prebuilt_wasm_bindgen(&cache, version, install_permitted);
     match dl {
diff --git a/src/build.rs b/src/build.rs
index ef0f159..ab34543 100644
--- a/src/build.rs
+++ b/src/build.rs
@@ -4,7 +4,6 @@ use child;
 use command::build::BuildProfile;
 use emoji;
 use failure::{Error, ResultExt};
-use progressbar::Step;
 use std::path::Path;
 use std::process::Command;
 use std::str;
@@ -49,7 +48,7 @@ fn rustc_minor_version() -> Option<u32> {
 
 /// Ensure that `rustup` has the `wasm32-unknown-unknown` target installed for
 /// current toolchain
-pub fn rustup_add_wasm_target(step: &Step) -> Result<(), Error> {
+pub fn rustup_add_wasm_target() -> Result<(), Error> {
     let mut cmd = Command::new("rustc");
     cmd.arg("--print").arg("sysroot");
     let output =
@@ -64,7 +63,7 @@ pub fn rustup_add_wasm_target(step: &Step) -> Result<(), Error> {
 
     // ... otherwise fall back to rustup to add the target
     let msg = format!("{}Adding Wasm target...", emoji::TARGET);
-    PBAR.step(step, &msg);
+    PBAR.step(&msg);
     let mut cmd = Command::new("rustup");
     cmd.arg("target").arg("add").arg("wasm32-unknown-unknown");
     child::run(cmd, "rustup").context("Adding the wasm32-unknown-unknown target with rustup")?;
@@ -75,11 +74,10 @@ pub fn rustup_add_wasm_target(step: &Step) -> Result<(), Error> {
 pub fn cargo_build_wasm(
     path: &Path,
     profile: BuildProfile,
-    step: &Step,
     extra_options: &Vec<String>,
 ) -> Result<(), Error> {
     let msg = format!("{}Compiling to Wasm...", emoji::CYCLONE);
-    PBAR.step(step, &msg);
+    PBAR.step(&msg);
     let mut cmd = Command::new("cargo");
     cmd.current_dir(path).arg("build").arg("--lib");
     match profile {
diff --git a/src/command/build.rs b/src/command/build.rs
index 5dabf3d..2fc1d41 100644
--- a/src/command/build.rs
+++ b/src/command/build.rs
@@ -11,7 +11,6 @@ use license;
 use lockfile::Lockfile;
 use log::info;
 use manifest;
-use progressbar::Step;
 use readme;
 use std::path::PathBuf;
 use std::str::FromStr;
@@ -183,7 +182,7 @@ impl Default for BuildOptions {
     }
 }
 
-type BuildStep = fn(&mut Build, &Step) -> Result<(), Error>;
+type BuildStep = fn(&mut Build) -> Result<(), Error>;
 
 impl Build {
     /// Construct a build command from the given options.
@@ -226,13 +225,10 @@ impl Build {
     pub fn run(&mut self) -> Result<(), Error> {
         let process_steps = Build::get_process_steps(self.mode);
 
-        let mut step_counter = Step::new(process_steps.len());
-
         let started = Instant::now();
 
         for (_, process_step) in process_steps {
-            process_step(self, &step_counter)?;
-            step_counter.inc();
+            process_step(self)?;
         }
 
         let duration = crate::command::utils::elapsed(started.elapsed());
@@ -297,7 +293,7 @@ impl Build {
         }
     }
 
-    fn step_check_rustc_version(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_check_rustc_version(&mut self) -> Result<(), Error> {
         info!("Checking rustc version...");
         let version = build::check_rustc_version()?;
         let msg = format!("rustc version is {}.", version);
@@ -305,23 +301,23 @@ impl Build {
         Ok(())
     }
 
-    fn step_check_crate_config(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_check_crate_config(&mut self) -> Result<(), Error> {
         info!("Checking crate configuration...");
         self.crate_data.check_crate_config()?;
         info!("Crate is correctly configured.");
         Ok(())
     }
 
-    fn step_add_wasm_target(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_add_wasm_target(&mut self) -> Result<(), Error> {
         info!("Adding wasm-target...");
-        build::rustup_add_wasm_target(step)?;
+        build::rustup_add_wasm_target()?;
         info!("Adding wasm-target was successful.");
         Ok(())
     }
 
-    fn step_build_wasm(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_build_wasm(&mut self) -> Result<(), Error> {
         info!("Building wasm...");
-        build::cargo_build_wasm(&self.crate_path, self.profile, step, &self.extra_options)?;
+        build::cargo_build_wasm(&self.crate_path, self.profile, &self.extra_options)?;
 
         info!(
             "wasm built at {:#?}.",
@@ -334,14 +330,14 @@ impl Build {
         Ok(())
     }
 
-    fn step_create_dir(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_create_dir(&mut self) -> Result<(), Error> {
         info!("Creating a pkg directory...");
         create_pkg_dir(&self.out_dir)?;
         info!("Created a pkg directory at {:#?}.", &self.crate_path);
         Ok(())
     }
 
-    fn step_create_json(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_create_json(&mut self) -> Result<(), Error> {
         self.crate_data.write_package_json(
             &self.out_dir,
             &self.scope,
@@ -355,21 +351,21 @@ impl Build {
         Ok(())
     }
 
-    fn step_copy_readme(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_copy_readme(&mut self) -> Result<(), Error> {
         info!("Copying readme from crate...");
         readme::copy_from_crate(&self.crate_path, &self.out_dir)?;
         info!("Copied readme from crate to {:#?}.", &self.out_dir);
         Ok(())
     }
 
-    fn step_copy_license(&mut self, _step: &Step) -> Result<(), failure::Error> {
+    fn step_copy_license(&mut self) -> Result<(), failure::Error> {
         info!("Copying license from crate...");
         license::copy_from_crate(&self.crate_data, &self.crate_path, &self.out_dir)?;
         info!("Copied license from crate to {:#?}.", &self.out_dir);
         Ok(())
     }
 
-    fn step_install_wasm_bindgen(&mut self, step: &Step) -> Result<(), failure::Error> {
+    fn step_install_wasm_bindgen(&mut self) -> Result<(), failure::Error> {
         info!("Identifying wasm-bindgen dependency...");
         let lockfile = Lockfile::new(&self.crate_data)?;
         let bindgen_version = lockfile.require_wasm_bindgen()?;
@@ -380,13 +376,13 @@ impl Build {
             BuildMode::Noinstall => false,
         };
         let bindgen =
-            bindgen::install_wasm_bindgen(&self.cache, &bindgen_version, install_permitted, step)?;
+            bindgen::install_wasm_bindgen(&self.cache, &bindgen_version, install_permitted)?;
         self.bindgen = Some(bindgen);
         info!("Installing wasm-bindgen-cli was successful.");
         Ok(())
     }
 
-    fn step_run_wasm_bindgen(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_run_wasm_bindgen(&mut self) -> Result<(), Error> {
         info!("Building the wasm bindings...");
         bindgen::wasm_bindgen_build(
             &self.crate_data,
diff --git a/src/command/test.rs b/src/command/test.rs
index 85f945c..da7cf29 100644
--- a/src/command/test.rs
+++ b/src/command/test.rs
@@ -11,7 +11,6 @@ use failure::Error;
 use lockfile::Lockfile;
 use log::info;
 use manifest;
-use progressbar::Step;
 use std::path::PathBuf;
 use std::time::Instant;
 use test::{self, webdriver};
@@ -100,7 +99,7 @@ pub struct Test {
     extra_options: Vec<String>,
 }
 
-type TestStep = fn(&mut Test, &Step) -> Result<(), Error>;
+type TestStep = fn(&mut Test) -> Result<(), Error>;
 
 impl Test {
     /// Construct a test command from the given options.
@@ -162,12 +161,10 @@ impl Test {
     /// Execute this test command.
     pub fn run(mut self) -> Result<(), Error> {
         let process_steps = self.get_process_steps();
-        let mut step_counter = Step::new(process_steps.len());
 
         let started = Instant::now();
         for (_, process_step) in process_steps {
-            process_step(&mut self, &step_counter)?;
-            step_counter.inc();
+            process_step(&mut self)?;
         }
         let duration = crate::command::utils::elapsed(started.elapsed());
         info!("Done in {}.", &duration);
@@ -230,21 +227,21 @@ impl Test {
         }
     }
 
-    fn step_check_rustc_version(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_check_rustc_version(&mut self) -> Result<(), Error> {
         info!("Checking rustc version...");
         let _ = build::check_rustc_version()?;
         info!("Rustc version is correct.");
         Ok(())
     }
 
-    fn step_add_wasm_target(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_add_wasm_target(&mut self) -> Result<(), Error> {
         info!("Adding wasm-target...");
-        build::rustup_add_wasm_target(step)?;
+        build::rustup_add_wasm_target()?;
         info!("Adding wasm-target was successful.");
         Ok(())
     }
 
-    fn step_build_tests(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_build_tests(&mut self) -> Result<(), Error> {
         info!("Compiling tests to wasm...");
 
         build::cargo_build_wasm_tests(&self.crate_path, !self.release)?;
@@ -253,7 +250,7 @@ impl Test {
         Ok(())
     }
 
-    fn step_install_wasm_bindgen(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_install_wasm_bindgen(&mut self) -> Result<(), Error> {
         info!("Identifying wasm-bindgen dependency...");
         let lockfile = Lockfile::new(&self.crate_data)?;
         let bindgen_version = lockfile.require_wasm_bindgen()?;
@@ -288,7 +285,7 @@ impl Test {
         };
 
         let dl =
-            bindgen::install_wasm_bindgen(&self.cache, &bindgen_version, install_permitted, step)?;
+            bindgen::install_wasm_bindgen(&self.cache, &bindgen_version, install_permitted)?;
 
         self.test_runner_path = Some(dl.binary("wasm-bindgen-test-runner")?);
 
@@ -296,7 +293,7 @@ impl Test {
         Ok(())
     }
 
-    fn step_test_node(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_test_node(&mut self) -> Result<(), Error> {
         assert!(self.node);
         info!("Running tests in node...");
         test::cargo_test_wasm(
@@ -312,18 +309,17 @@ impl Test {
         Ok(())
     }
 
-    fn step_get_chromedriver(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_get_chromedriver(&mut self) -> Result<(), Error> {
         assert!(self.chrome && self.chromedriver.is_none());
 
         self.chromedriver = Some(webdriver::get_or_install_chromedriver(
             &self.cache,
             self.mode,
-            step,
         )?);
         Ok(())
     }
 
-    fn step_test_chrome(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_test_chrome(&mut self) -> Result<(), Error> {
         let chromedriver = self.chromedriver.as_ref().unwrap().display().to_string();
         let chromedriver = chromedriver.as_str();
         info!(
@@ -352,18 +348,17 @@ impl Test {
         Ok(())
     }
 
-    fn step_get_geckodriver(&mut self, step: &Step) -> Result<(), Error> {
+    fn step_get_geckodriver(&mut self) -> Result<(), Error> {
         assert!(self.firefox && self.geckodriver.is_none());
 
         self.geckodriver = Some(webdriver::get_or_install_geckodriver(
             &self.cache,
             self.mode,
-            step,
         )?);
         Ok(())
     }
 
-    fn step_test_firefox(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_test_firefox(&mut self) -> Result<(), Error> {
         let geckodriver = self.geckodriver.as_ref().unwrap().display().to_string();
         let geckodriver = geckodriver.as_str();
         info!(
@@ -392,14 +387,14 @@ impl Test {
         Ok(())
     }
 
-    fn step_get_safaridriver(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_get_safaridriver(&mut self) -> Result<(), Error> {
         assert!(self.safari && self.safaridriver.is_none());
 
         self.safaridriver = Some(webdriver::get_safaridriver()?);
         Ok(())
     }
 
-    fn step_test_safari(&mut self, _step: &Step) -> Result<(), Error> {
+    fn step_test_safari(&mut self) -> Result<(), Error> {
         let safaridriver = self.safaridriver.as_ref().unwrap().display().to_string();
         let safaridriver = safaridriver.as_str();
         info!(
diff --git a/src/progressbar.rs b/src/progressbar.rs
index acc1448..6d4a9aa 100644
--- a/src/progressbar.rs
+++ b/src/progressbar.rs
@@ -2,7 +2,6 @@
 
 use console::style;
 use emoji;
-use std::fmt;
 
 /// Synchronized progress bar and status message printing.
 pub struct ProgressOutput;
@@ -10,8 +9,8 @@ pub struct ProgressOutput;
 impl ProgressOutput {
     /// Inform the user that the given `step` is being executed, with details in
     /// `message`.
-    pub fn step(&self, step: &Step, message: &str) {
-        let msg = format!("{} {}", style(step).bold().dim(), message);
+    pub fn step(&self, message: &str) {
+        let msg = format!("{} {}", style(emoji::INFO).bold().dim(), message);
         self.message(&msg)
     }
 
@@ -58,33 +57,6 @@ impl ProgressOutput {
     }
 }
 
-/// For processes that can be broken down into N fractional steps, with messages
-/// added for each step along the way like
-///
-/// > [2/5] Doing the second step out of five.
-pub struct Step {
-    current: usize,
-    total: usize,
-}
-
-impl Step {
-    /// Construct a `Step` where there are `total` number of steps.
-    pub fn new(total: usize) -> Step {
-        Step { current: 1, total }
-    }
-
-    /// Increment the current step.
-    pub fn inc(&mut self) {
-        self.current += 1;
-    }
-}
-
-impl fmt::Display for Step {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "{}", emoji::INFO)
-    }
-}
-
 impl Default for ProgressOutput {
     fn default() -> Self {
         ProgressOutput
diff --git a/src/test/webdriver.rs b/src/test/webdriver.rs
index 6a645e9..75aee6f 100644
--- a/src/test/webdriver.rs
+++ b/src/test/webdriver.rs
@@ -1,6 +1,5 @@
 //! Getting WebDriver client binaries.
 
-use crate::progressbar::Step;
 use binary_install::Cache;
 use command::build::BuildMode;
 use failure;
@@ -13,13 +12,12 @@ fn get_and_notify(
     installation_allowed: bool,
     name: &str,
     url: &str,
-    step: &Step,
 ) -> Result<Option<PathBuf>, failure::Error> {
     if let Some(dl) = cache.download(false, name, &[name], &url)? {
         return Ok(Some(dl.binary(name)?));
     }
     if installation_allowed {
-        PBAR.step(step, &format!("Getting {}...", name));
+        PBAR.step(&format!("Getting {}...", name));
     }
     match cache.download(installation_allowed, name, &[name], &url)? {
         Some(dl) => Ok(Some(dl.binary(name)?)),
@@ -32,7 +30,6 @@ fn get_and_notify(
 pub fn get_or_install_chromedriver(
     cache: &Cache,
     mode: BuildMode,
-    step: &Step,
 ) -> Result<PathBuf, failure::Error> {
     if let Ok(path) = which::which("chromedriver") {
         return Ok(path);
@@ -41,14 +38,13 @@ pub fn get_or_install_chromedriver(
         BuildMode::Noinstall => false,
         _ => true,
     };
-    install_chromedriver(cache, installation_allowed, step)
+    install_chromedriver(cache, installation_allowed)
 }
 
 /// Download and install a pre-built `chromedriver` binary.
 pub fn install_chromedriver(
     cache: &Cache,
     installation_allowed: bool,
-    step: &Step,
 ) -> Result<PathBuf, failure::Error> {
     let target = if target::LINUX && target::x86_64 {
         "linux64"
@@ -64,7 +60,7 @@ pub fn install_chromedriver(
         "https://chromedriver.storage.googleapis.com/2.46/chromedriver_{}.zip",
         target
     );
-    match get_and_notify(cache, installation_allowed, "chromedriver", &url, step)? {
+    match get_and_notify(cache, installation_allowed, "chromedriver", &url)? {
         Some(path) => Ok(path),
         None => bail!(
             "No cached `chromedriver` binary found, and could not find a global \
@@ -79,7 +75,6 @@ pub fn install_chromedriver(
 pub fn get_or_install_geckodriver(
     cache: &Cache,
     mode: BuildMode,
-    step: &Step,
 ) -> Result<PathBuf, failure::Error> {
     if let Ok(path) = which::which("geckodriver") {
         return Ok(path);
@@ -88,14 +83,13 @@ pub fn get_or_install_geckodriver(
         BuildMode::Noinstall => false,
         _ => true,
     };
-    install_geckodriver(cache, installation_allowed, step)
+    install_geckodriver(cache, installation_allowed)
 }
 
 /// Download and install a pre-built `geckodriver` binary.
 pub fn install_geckodriver(
     cache: &Cache,
     installation_allowed: bool,
-    step: &Step,
 ) -> Result<PathBuf, failure::Error> {
     let (target, ext) = if target::LINUX && target::x86 {
         ("linux32", "tar.gz")
@@ -116,7 +110,7 @@ pub fn install_geckodriver(
         target,
         ext,
     );
-    match get_and_notify(cache, installation_allowed, "geckodriver", &url, step)? {
+    match get_and_notify(cache, installation_allowed, "geckodriver", &url)? {
         Some(path) => Ok(path),
         None => bail!(
             "No cached `geckodriver` binary found, and could not find a global `geckodriver` \
diff --git a/tests/all/utils/fixture.rs b/tests/all/utils/fixture.rs
index 11c323e..fced91c 100644
--- a/tests/all/utils/fixture.rs
+++ b/tests/all/utils/fixture.rs
@@ -245,11 +245,10 @@ impl Fixture {
         let cache = self.cache();
 
         // like above for synchronization
-        let step = wasm_pack::progressbar::Step::new(1);
         FETCH_GECKODRIVER.call_once(|| {
-            wasm_pack::test::webdriver::install_geckodriver(&cache, true, &step).unwrap();
+            wasm_pack::test::webdriver::install_geckodriver(&cache, true).unwrap();
         });
-        wasm_pack::test::webdriver::install_geckodriver(&cache, true, &step).unwrap()
+        wasm_pack::test::webdriver::install_geckodriver(&cache, true).unwrap()
     }
 
     /// Download `chromedriver` and return its path.
@@ -261,11 +260,10 @@ impl Fixture {
         let cache = self.cache();
 
         // like above for synchronization
-        let step = wasm_pack::progressbar::Step::new(1);
         FETCH_CHROMEDRIVER.call_once(|| {
-            wasm_pack::test::webdriver::install_chromedriver(&cache, true, &step).unwrap();
+            wasm_pack::test::webdriver::install_chromedriver(&cache, true).unwrap();
         });
-        wasm_pack::test::webdriver::install_chromedriver(&cache, true, &step).unwrap()
+        wasm_pack::test::webdriver::install_chromedriver(&cache, true).unwrap()
     }
 
     pub fn cache_dir(&self) -> PathBuf {
diff --git a/tests/all/webdriver.rs b/tests/all/webdriver.rs
index 15f84e3..6223290 100644
--- a/tests/all/webdriver.rs
+++ b/tests/all/webdriver.rs
@@ -12,8 +12,7 @@ use wasm_pack::test::webdriver;
 fn can_install_chromedriver() {
     let fixture = fixture::js_hello_world();
     let cache = Cache::at(&fixture.path);
-    let step = wasm_pack::progressbar::Step::new(1);
-    assert!(webdriver::install_chromedriver(&cache, true, &step).is_ok());
+    assert!(webdriver::install_chromedriver(&cache, true).is_ok());
 }
 
 #[test]
@@ -27,6 +26,5 @@ fn can_install_chromedriver() {
 fn can_install_geckodriver() {
     let fixture = fixture::js_hello_world();
     let cache = Cache::at(&fixture.path);
-    let step = wasm_pack::progressbar::Step::new(1);
-    assert!(webdriver::install_geckodriver(&cache, true, &step).is_ok());
+    assert!(webdriver::install_geckodriver(&cache, true).is_ok());
 }

From ff6005e28aa1aaacb734b7320869c389a96e6c2d Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Fri, 1 Mar 2019 09:47:41 -0800
Subject: [PATCH 07/10] Run rustfmt

---
 src/command/test.rs   | 3 +--
 src/manifest/mod.rs   | 1 -
 tests/all/manifest.rs | 7 +------
 3 files changed, 2 insertions(+), 9 deletions(-)

diff --git a/src/command/test.rs b/src/command/test.rs
index da7cf29..cbbe529 100644
--- a/src/command/test.rs
+++ b/src/command/test.rs
@@ -284,8 +284,7 @@ impl Test {
             }
         };
 
-        let dl =
-            bindgen::install_wasm_bindgen(&self.cache, &bindgen_version, install_permitted)?;
+        let dl = bindgen::install_wasm_bindgen(&self.cache, &bindgen_version, install_permitted)?;
 
         self.test_runner_path = Some(dl.binary("wasm-bindgen-test-runner")?);
 
diff --git a/src/manifest/mod.rs b/src/manifest/mod.rs
index bc54206..617af86 100644
--- a/src/manifest/mod.rs
+++ b/src/manifest/mod.rs
@@ -12,7 +12,6 @@ use self::npm::{
 };
 use cargo_metadata::Metadata;
 use command::build::{BuildProfile, Target};
-use emoji;
 use failure::{Error, ResultExt};
 use serde::{self, Deserialize};
 use serde_json;
diff --git a/tests/all/manifest.rs b/tests/all/manifest.rs
index 0298ed5..5a6468c 100644
--- a/tests/all/manifest.rs
+++ b/tests/all/manifest.rs
@@ -125,12 +125,7 @@ fn it_creates_a_package_json_provided_path_with_scope() {
     let crate_data = manifest::CrateData::new(&fixture.path).unwrap();
     wasm_pack::command::utils::create_pkg_dir(&out_dir).unwrap();
     assert!(crate_data
-        .write_package_json(
-            &out_dir,
-            &Some("test".to_string()),
-            false,
-            &Target::Bundler,
-        )
+        .write_package_json(&out_dir, &Some("test".to_string()), false, &Target::Bundler,)
         .is_ok());
     let package_json_path = &fixture.path.join("pkg").join("package.json");
     fs::metadata(package_json_path).unwrap();

From bcbfc4fc86421f642e0eeed0c80e9207cc255703 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Fri, 15 Mar 2019 13:06:15 -0700
Subject: [PATCH 08/10] Tweak output formatting slightly and location

* All messages are now printed onto stderr instead of some on stdout and
  some on stderr
* All messages uniformly are prefixed with an emoji with consistent
  spacing.
---
 src/progressbar.rs    | 15 +++++----------
 tests/all/manifest.rs |  2 +-
 2 files changed, 6 insertions(+), 11 deletions(-)

diff --git a/src/progressbar.rs b/src/progressbar.rs
index 6d4a9aa..a543bcb 100644
--- a/src/progressbar.rs
+++ b/src/progressbar.rs
@@ -10,17 +10,12 @@ impl ProgressOutput {
     /// Inform the user that the given `step` is being executed, with details in
     /// `message`.
     pub fn step(&self, message: &str) {
-        let msg = format!("{} {}", style(emoji::INFO).bold().dim(), message);
-        self.message(&msg)
+        self.info(message);
     }
 
     /// Print the given message.
     pub fn message(&self, message: &str) {
-        eprintln!("  {}", message);
-    }
-
-    fn add_message(&self, msg: &str) {
-        println!("{}", msg);
+        eprintln!("{}", message);
     }
 
     /// Add an informational message.
@@ -31,7 +26,7 @@ impl ProgressOutput {
             style("[INFO]").bold().dim(),
             message
         );
-        self.add_message(&info);
+        self.message(&info);
     }
 
     /// Add a warning message.
@@ -42,7 +37,7 @@ impl ProgressOutput {
             style("[WARN]").bold().dim(),
             message
         );
-        self.add_message(&warn);
+        self.message(&warn);
     }
 
     /// Add an error message.
@@ -53,7 +48,7 @@ impl ProgressOutput {
             style("[ERR]").bold().dim(),
             message
         );
-        self.add_message(&err);
+        self.message(&err);
     }
 }
 
diff --git a/tests/all/manifest.rs b/tests/all/manifest.rs
index 5a6468c..a68cf27 100644
--- a/tests/all/manifest.rs
+++ b/tests/all/manifest.rs
@@ -399,7 +399,7 @@ fn parse_crate_data_returns_unused_keys_in_cargo_toml() {
         .arg("build")
         .assert()
         .success()
-        .stdout(predicates::str::contains(
+        .stderr(predicates::str::contains(
             "[WARN]: \"package.metadata.wasm-pack.profile.production\" is an unknown key and will \
              be ignored. Please check your Cargo.toml.",
         ));

From 90055c682f0e719e0653ba37aa2a73caa6ec53b1 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Fri, 15 Mar 2019 13:15:12 -0700
Subject: [PATCH 09/10] Funnel everything through `PBAR.info`

---
 src/bindgen.rs             |  2 +-
 src/build.rs               |  4 ++--
 src/command/build.rs       |  4 ++--
 src/command/login.rs       |  2 +-
 src/command/pack.rs        |  2 +-
 src/command/publish/mod.rs |  2 +-
 src/progressbar.rs         | 13 +++----------
 src/test/webdriver.rs      |  2 +-
 8 files changed, 12 insertions(+), 19 deletions(-)

diff --git a/src/bindgen.rs b/src/bindgen.rs
index 4b3a629..bf30d78 100644
--- a/src/bindgen.rs
+++ b/src/bindgen.rs
@@ -40,7 +40,7 @@ pub fn install_wasm_bindgen(
     }
 
     let msg = format!("{}Installing wasm-bindgen...", emoji::DOWN_ARROW);
-    PBAR.step(&msg);
+    PBAR.info(&msg);
 
     let dl = download_prebuilt_wasm_bindgen(&cache, version, install_permitted);
     match dl {
diff --git a/src/build.rs b/src/build.rs
index ab34543..845e2da 100644
--- a/src/build.rs
+++ b/src/build.rs
@@ -63,7 +63,7 @@ pub fn rustup_add_wasm_target() -> Result<(), Error> {
 
     // ... otherwise fall back to rustup to add the target
     let msg = format!("{}Adding Wasm target...", emoji::TARGET);
-    PBAR.step(&msg);
+    PBAR.info(&msg);
     let mut cmd = Command::new("rustup");
     cmd.arg("target").arg("add").arg("wasm32-unknown-unknown");
     child::run(cmd, "rustup").context("Adding the wasm32-unknown-unknown target with rustup")?;
@@ -77,7 +77,7 @@ pub fn cargo_build_wasm(
     extra_options: &Vec<String>,
 ) -> Result<(), Error> {
     let msg = format!("{}Compiling to Wasm...", emoji::CYCLONE);
-    PBAR.step(&msg);
+    PBAR.info(&msg);
     let mut cmd = Command::new("cargo");
     cmd.current_dir(path).arg("build").arg("--lib");
     match profile {
diff --git a/src/command/build.rs b/src/command/build.rs
index 2fc1d41..afa755d 100644
--- a/src/command/build.rs
+++ b/src/command/build.rs
@@ -238,9 +238,9 @@ impl Build {
             self.out_dir.display()
         );
 
-        PBAR.message(&format!("{} Done in {}", emoji::SPARKLE, &duration));
+        PBAR.info(&format!("{} Done in {}", emoji::SPARKLE, &duration));
 
-        PBAR.message(&format!(
+        PBAR.info(&format!(
             "{} Your wasm pkg is ready to publish at {}.",
             emoji::PACKAGE,
             self.out_dir.display()
diff --git a/src/command/login.rs b/src/command/login.rs
index 4c0aa94..6df51f5 100644
--- a/src/command/login.rs
+++ b/src/command/login.rs
@@ -20,6 +20,6 @@ pub fn login(
     npm::npm_login(&registry, &scope, always_auth, &auth_type)?;
     info!("Logged you in!");
 
-    PBAR.message(&"👋  logged you in!".to_string());
+    PBAR.info(&"👋  logged you in!".to_string());
     Ok(())
 }
diff --git a/src/command/pack.rs b/src/command/pack.rs
index 5ede602..a3a779e 100644
--- a/src/command/pack.rs
+++ b/src/command/pack.rs
@@ -22,6 +22,6 @@ pub fn pack(path: Option<PathBuf>) -> result::Result<(), Error> {
     npm::npm_pack(&pkg_directory.to_string_lossy())?;
     info!("Your package is located at {:#?}", crate_path.join("pkg"));
 
-    PBAR.message("🎒  packed up your package!");
+    PBAR.info("🎒  packed up your package!");
     Ok(())
 }
diff --git a/src/command/publish/mod.rs b/src/command/publish/mod.rs
index 019a83b..98b7001 100644
--- a/src/command/publish/mod.rs
+++ b/src/command/publish/mod.rs
@@ -77,6 +77,6 @@ pub fn publish(
     npm::npm_publish(&pkg_directory.to_string_lossy(), access)?;
     info!("Published your package!");
 
-    PBAR.message("💥  published your package!");
+    PBAR.info("💥  published your package!");
     Ok(())
 }
diff --git a/src/progressbar.rs b/src/progressbar.rs
index a543bcb..2f260e4 100644
--- a/src/progressbar.rs
+++ b/src/progressbar.rs
@@ -7,24 +7,17 @@ use emoji;
 pub struct ProgressOutput;
 
 impl ProgressOutput {
-    /// Inform the user that the given `step` is being executed, with details in
-    /// `message`.
-    pub fn step(&self, message: &str) {
-        self.info(message);
-    }
-
     /// Print the given message.
-    pub fn message(&self, message: &str) {
+    fn message(&self, message: &str) {
         eprintln!("{}", message);
     }
 
     /// Add an informational message.
     pub fn info(&self, message: &str) {
         let info = format!(
-            "{} {}: {}",
-            emoji::INFO,
+            "{}: {}",
             style("[INFO]").bold().dim(),
-            message
+            message,
         );
         self.message(&info);
     }
diff --git a/src/test/webdriver.rs b/src/test/webdriver.rs
index 75aee6f..a5201ec 100644
--- a/src/test/webdriver.rs
+++ b/src/test/webdriver.rs
@@ -17,7 +17,7 @@ fn get_and_notify(
         return Ok(Some(dl.binary(name)?));
     }
     if installation_allowed {
-        PBAR.step(&format!("Getting {}...", name));
+        PBAR.info(&format!("Getting {}...", name));
     }
     match cache.download(installation_allowed, name, &[name], &url)? {
         Some(dl) => Ok(Some(dl.binary(name)?)),

From e796e6e6041c998ccda0e9a0b4565caa8a836bf5 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Fri, 15 Mar 2019 13:38:10 -0700
Subject: [PATCH 10/10] Run `cargo fmt`

---
 src/progressbar.rs | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/progressbar.rs b/src/progressbar.rs
index 2f260e4..50eea02 100644
--- a/src/progressbar.rs
+++ b/src/progressbar.rs
@@ -14,11 +14,7 @@ impl ProgressOutput {
 
     /// Add an informational message.
     pub fn info(&self, message: &str) {
-        let info = format!(
-            "{}: {}",
-            style("[INFO]").bold().dim(),
-            message,
-        );
+        let info = format!("{}: {}", style("[INFO]").bold().dim(), message,);
         self.message(&info);
     }