[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] 8f34782e1496432c77612b425c91a8fe62de0d2e
[INFO] testing tswett/ambrose against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftswett%2Fambrose" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tswett/ambrose on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-20/source/Cargo.toml
[INFO] crate git repo https://github.com/tswett/ambrose already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 81aaf2d43e3f092e2ec03697152a5a671d2e239755af0887a5dc4da8124d9d98
[INFO] running `Command { std: "docker" "start" "-a" "81aaf2d43e3f092e2ec03697152a5a671d2e239755af0887a5dc4da8124d9d98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81aaf2d43e3f092e2ec03697152a5a671d2e239755af0887a5dc4da8124d9d98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81aaf2d43e3f092e2ec03697152a5a671d2e239755af0887a5dc4da8124d9d98", kill_on_drop: false }`
[INFO] [stdout] 81aaf2d43e3f092e2ec03697152a5a671d2e239755af0887a5dc4da8124d9d98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20b83d82c57bfbbe13f4c902c39d9d5d53e8ff90a582c6f34e0dd5d1025c5655
[INFO] running `Command { std: "docker" "start" "-a" "20b83d82c57bfbbe13f4c902c39d9d5d53e8ff90a582c6f34e0dd5d1025c5655", 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]    Compiling ambrose v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `note`
[INFO] [stdout]   --> src/main.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | 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 is never used: `play_pachelbel`
[INFO] [stdout]   --> src/main.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn play_pachelbel() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "20b83d82c57bfbbe13f4c902c39d9d5d53e8ff90a582c6f34e0dd5d1025c5655", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20b83d82c57bfbbe13f4c902c39d9d5d53e8ff90a582c6f34e0dd5d1025c5655", kill_on_drop: false }`
[INFO] [stdout] 20b83d82c57bfbbe13f4c902c39d9d5d53e8ff90a582c6f34e0dd5d1025c5655
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d5d54631aadaaa7d1208036a497a4e0e1b0b8a7fc35ca4c68feee157edeb771
[INFO] running `Command { std: "docker" "start" "-a" "4d5d54631aadaaa7d1208036a497a4e0e1b0b8a7fc35ca4c68feee157edeb771", kill_on_drop: false }`
[INFO] [stderr]    Compiling ambrose v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `note`
[INFO] [stdout]   --> src/main.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | 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 is never used: `play_pachelbel`
[INFO] [stdout]   --> src/main.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn play_pachelbel() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "4d5d54631aadaaa7d1208036a497a4e0e1b0b8a7fc35ca4c68feee157edeb771", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d5d54631aadaaa7d1208036a497a4e0e1b0b8a7fc35ca4c68feee157edeb771", kill_on_drop: false }`
[INFO] [stdout] 4d5d54631aadaaa7d1208036a497a4e0e1b0b8a7fc35ca4c68feee157edeb771
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 06fd5a2a8467721112906fb200f38ef9e86519690148b74260b4df5d5aa64426
[INFO] running `Command { std: "docker" "start" "-a" "06fd5a2a8467721112906fb200f38ef9e86519690148b74260b4df5d5aa64426", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `note`
[INFO] [stderr]   --> src/main.rs:36:4
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn note(next_note_index: u32, motor_id: u8, frequency: u32, length: u32) -> NoteInfo {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `play_pachelbel`
[INFO] [stderr]   --> src/main.rs:68:4
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn play_pachelbel() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `ambrose` (bin "ambrose" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ambrose-6037a7f6212a9153)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test motor::tests::can_create_test_motor ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "06fd5a2a8467721112906fb200f38ef9e86519690148b74260b4df5d5aa64426", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06fd5a2a8467721112906fb200f38ef9e86519690148b74260b4df5d5aa64426", kill_on_drop: false }`
[INFO] [stdout] 06fd5a2a8467721112906fb200f38ef9e86519690148b74260b4df5d5aa64426