[INFO] cloning repository https://github.com/tswett/ambrose
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tswett/ambrose" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftswett%2Fambrose", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftswett%2Fambrose'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 293764cb651b4638f003971bdccdac2e9c06b1b2
[INFO] checking tswett/ambrose against master#b56aaec52bc0fa35591a872fb4aac81f606e265c for pr-122661-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftswett%2Fambrose" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tswett/ambrose
[INFO] finished tweaking git repo https://github.com/tswett/ambrose
[INFO] tweaked toml for git repo https://github.com/tswett/ambrose written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tswett/ambrose on toolchain b56aaec52bc0fa35591a872fb4aac81f606e265c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tswett/ambrose already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rppal v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2a1728a5b1baa0ad42ddbe2c24efb906c7c09244bbed2164c9445e4a6a9905a
[INFO] running `Command { std: "docker" "start" "-a" "f2a1728a5b1baa0ad42ddbe2c24efb906c7c09244bbed2164c9445e4a6a9905a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2a1728a5b1baa0ad42ddbe2c24efb906c7c09244bbed2164c9445e4a6a9905a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2a1728a5b1baa0ad42ddbe2c24efb906c7c09244bbed2164c9445e4a6a9905a", kill_on_drop: false }`
[INFO] [stdout] f2a1728a5b1baa0ad42ddbe2c24efb906c7c09244bbed2164c9445e4a6a9905a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5c453c099e3f16320981bb5b479dcbc3310d53ef688e7baabc2e7ff76a8863f
[INFO] running `Command { std: "docker" "start" "-a" "b5c453c099e3f16320981bb5b479dcbc3310d53ef688e7baabc2e7ff76a8863f", kill_on_drop: false }`
[INFO] [stderr]     Checking ambrose v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `note` is never used
[INFO] [stdout]   --> src/main.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn note(next_note_index: u32, motor_id: u8, frequency: u32, length: u32) -> NoteInfo {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `note` is never used
[INFO] [stdout]   --> src/main.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn note(next_note_index: u32, motor_id: u8, frequency: u32, length: u32) -> NoteInfo {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_pachelbel` is never used
[INFO] [stdout]   --> src/main.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn play_pachelbel() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestMotor` is never constructed
[INFO] [stdout]   --> src/motor.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct TestMotor {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `slur` is never used
[INFO] [stdout]   --> src/notes.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl NoteInfo {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 18 |     pub fn slur(self) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_pachelbel` is never used
[INFO] [stdout]   --> src/main.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn play_pachelbel() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BEAT_DURATION` is never used
[INFO] [stdout]  --> src/songs/peaceofmind.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const BEAT_DURATION: u64 = 117188;
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `note` is never used
[INFO] [stdout]  --> src/songs/peaceofmind.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn note(octave: i16, pitch: i16, duration: u64) -> NoteInfo {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `slur` is never used
[INFO] [stdout]   --> src/notes.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl NoteInfo {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] 18 |     pub fn slur(self) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_song` is never used
[INFO] [stdout]   --> src/songs/peaceofmind.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn build_song() -> SongBuilder {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BEAT_DURATION` is never used
[INFO] [stdout]  --> src/songs/peaceofmind.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const BEAT_DURATION: u64 = 117188;
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `note` is never used
[INFO] [stdout]  --> src/songs/peaceofmind.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn note(octave: i16, pitch: i16, duration: u64) -> NoteInfo {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DummyTimer` is never constructed
[INFO] [stdout]   --> src/timer.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct DummyTimer { }
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_song` is never used
[INFO] [stdout]   --> src/songs/peaceofmind.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn build_song() -> SongBuilder {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DummyTimer` is never constructed
[INFO] [stdout]   --> src/timer.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub struct DummyTimer { }
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "b5c453c099e3f16320981bb5b479dcbc3310d53ef688e7baabc2e7ff76a8863f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5c453c099e3f16320981bb5b479dcbc3310d53ef688e7baabc2e7ff76a8863f", kill_on_drop: false }`
[INFO] [stdout] b5c453c099e3f16320981bb5b479dcbc3310d53ef688e7baabc2e7ff76a8863f