[INFO] cloning repository https://github.com/connorwalsh/fmsynth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/connorwalsh/fmsynth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnorwalsh%2Ffmsynth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnorwalsh%2Ffmsynth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f09aebffab1261f5524a9057ac212988419c0dda
[INFO] testing connorwalsh/fmsynth against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fconnorwalsh%2Ffmsynth" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/connorwalsh/fmsynth on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/connorwalsh/fmsynth
[INFO] finished tweaking git repo https://github.com/connorwalsh/fmsynth
[INFO] tweaked toml for git repo https://github.com/connorwalsh/fmsynth written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/connorwalsh/fmsynth already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12a9233ef29a70089bca8ec29362e7c2a968e3215edf9549d0fed994be89a824
[INFO] running `Command { std: "docker" "start" "-a" "12a9233ef29a70089bca8ec29362e7c2a968e3215edf9549d0fed994be89a824", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12a9233ef29a70089bca8ec29362e7c2a968e3215edf9549d0fed994be89a824", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12a9233ef29a70089bca8ec29362e7c2a968e3215edf9549d0fed994be89a824", kill_on_drop: false }`
[INFO] [stdout] 12a9233ef29a70089bca8ec29362e7c2a968e3215edf9549d0fed994be89a824
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14f37ada74e24242bfd3fbf24ad680b287d8ed595f891573881fee07a731608d
[INFO] running `Command { std: "docker" "start" "-a" "14f37ada74e24242bfd3fbf24ad680b287d8ed595f891573881fee07a731608d", kill_on_drop: false }`
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling cpal v0.8.2
[INFO] [stderr]    Compiling fmsynth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `StreamData`, `UnknownTypeOutputBuffer`
[INFO] [stdout]  --> src/synthesis/pcm.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     StreamData,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 9 |     UnknownTypeOutputBuffer,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let operator = synthesis::Operator::new(
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operator`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `frequency`
[INFO] [stdout]  --> src/synthesis/operator.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     frequency: f64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `amplitude`
[INFO] [stdout]  --> src/synthesis/operator.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     amplitude: f64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sample_rate`
[INFO] [stdout]  --> src/synthesis/operator.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     sample_rate: f64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Sine`
[INFO] [stdout]  --> src/synthesis/waveform.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Sine {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `device`
[INFO] [stdout]   --> src/synthesis/pcm.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     device: Device,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stream`
[INFO] [stdout]   --> src/synthesis/pcm.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     stream: StreamId,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.24s
[INFO] running `Command { std: "docker" "inspect" "14f37ada74e24242bfd3fbf24ad680b287d8ed595f891573881fee07a731608d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14f37ada74e24242bfd3fbf24ad680b287d8ed595f891573881fee07a731608d", kill_on_drop: false }`
[INFO] [stdout] 14f37ada74e24242bfd3fbf24ad680b287d8ed595f891573881fee07a731608d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1ba2713e2f82a7c3e9e7659b29e13eb45ea6b9a3986e5e8bd5f8eb874a7c89a
[INFO] running `Command { std: "docker" "start" "-a" "f1ba2713e2f82a7c3e9e7659b29e13eb45ea6b9a3986e5e8bd5f8eb874a7c89a", kill_on_drop: false }`
[INFO] [stderr]    Compiling fmsynth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `StreamData`, `UnknownTypeOutputBuffer`
[INFO] [stdout]  --> src/synthesis/pcm.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     StreamData,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 9 |     UnknownTypeOutputBuffer,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `operator`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let operator = synthesis::Operator::new(
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operator`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `frequency`
[INFO] [stdout]  --> src/synthesis/operator.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     frequency: f64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `amplitude`
[INFO] [stdout]  --> src/synthesis/operator.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     amplitude: f64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sample_rate`
[INFO] [stdout]  --> src/synthesis/operator.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     sample_rate: f64,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Sine`
[INFO] [stdout]  --> src/synthesis/waveform.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Sine {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `device`
[INFO] [stdout]   --> src/synthesis/pcm.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     device: Device,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stream`
[INFO] [stdout]   --> src/synthesis/pcm.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     stream: StreamId,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "f1ba2713e2f82a7c3e9e7659b29e13eb45ea6b9a3986e5e8bd5f8eb874a7c89a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1ba2713e2f82a7c3e9e7659b29e13eb45ea6b9a3986e5e8bd5f8eb874a7c89a", kill_on_drop: false }`
[INFO] [stdout] f1ba2713e2f82a7c3e9e7659b29e13eb45ea6b9a3986e5e8bd5f8eb874a7c89a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3ed2fc8dcfb6b6337802fe9771cb01fa130fc092cf6fc837a8716a21db196cb0
[INFO] running `Command { std: "docker" "start" "-a" "3ed2fc8dcfb6b6337802fe9771cb01fa130fc092cf6fc837a8716a21db196cb0", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused imports: `StreamData`, `UnknownTypeOutputBuffer`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/synthesis/pcm.rs:8:5
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 8 |     StreamData,
[INFO] [stdout] 
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 9 |     UnknownTypeOutputBuffer,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `operator`
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let operator = synthesis::Operator::new(
[INFO] [stderr]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_operator`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `frequency`
[INFO] [stderr]  --> src/synthesis/operator.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     frequency: f64,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `amplitude`
[INFO] [stderr]  --> src/synthesis/operator.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     amplitude: f64,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `sample_rate`
[INFO] [stderr]  --> src/synthesis/operator.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     sample_rate: f64,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Sine`
[INFO] [stderr]  --> src/synthesis/waveform.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Sine {
[INFO] [stderr]   |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `device`
[INFO] [stderr]   --> src/synthesis/pcm.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     device: Device,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stream`
[INFO] [stderr]   --> src/synthesis/pcm.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     stream: StreamId,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `fmsynth` (bin "fmsynth" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fmsynth-9ed3d7a8bd627db9)
[INFO] running `Command { std: "docker" "inspect" "3ed2fc8dcfb6b6337802fe9771cb01fa130fc092cf6fc837a8716a21db196cb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ed2fc8dcfb6b6337802fe9771cb01fa130fc092cf6fc837a8716a21db196cb0", kill_on_drop: false }`
[INFO] [stdout] 3ed2fc8dcfb6b6337802fe9771cb01fa130fc092cf6fc837a8716a21db196cb0