[INFO] fetching crate sampsyn 0.1.2...
[INFO] testing sampsyn-0.1.2 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate sampsyn 0.1.2 into /workspace/builds/worker-40/source
[INFO] validating manifest of crates.io crate sampsyn 0.1.2 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sampsyn 0.1.2
[INFO] finished tweaking crates.io crate sampsyn 0.1.2
[INFO] tweaked toml for crates.io crate sampsyn 0.1.2 written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] crate crates.io crate sampsyn 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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 simpleio v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5dc327d14ef9cfa51b188c8ed81ed9eee47b3321fae45b2cd960ed9de0152361
[INFO] running `Command { std: "docker" "start" "-a" "5dc327d14ef9cfa51b188c8ed81ed9eee47b3321fae45b2cd960ed9de0152361", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5dc327d14ef9cfa51b188c8ed81ed9eee47b3321fae45b2cd960ed9de0152361", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dc327d14ef9cfa51b188c8ed81ed9eee47b3321fae45b2cd960ed9de0152361", kill_on_drop: false }`
[INFO] [stdout] 5dc327d14ef9cfa51b188c8ed81ed9eee47b3321fae45b2cd960ed9de0152361
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21c5dcb5c05e9239c345121fa5305242a67c56ee28621d535669087f49003b35
[INFO] running `Command { std: "docker" "start" "-a" "21c5dcb5c05e9239c345121fa5305242a67c56ee28621d535669087f49003b35", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling sdl2 v0.34.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling simpleio v0.1.2
[INFO] [stderr]    Compiling hound v3.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling sdl2-sys v0.34.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling sampsyn v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `hz`
[INFO] [stdout]   --> src/bin.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let hz = 130.81; // 130.81 = c3, 261.63 = c4, 523.25 = c5
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_hz`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.41s
[INFO] running `Command { std: "docker" "inspect" "21c5dcb5c05e9239c345121fa5305242a67c56ee28621d535669087f49003b35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21c5dcb5c05e9239c345121fa5305242a67c56ee28621d535669087f49003b35", kill_on_drop: false }`
[INFO] [stdout] 21c5dcb5c05e9239c345121fa5305242a67c56ee28621d535669087f49003b35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4406f37461bed36eaa1ece957a247efb6652e666291dd33c4991c60147aa1a9
[INFO] running `Command { std: "docker" "start" "-a" "c4406f37461bed36eaa1ece957a247efb6652e666291dd33c4991c60147aa1a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling sampsyn v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `hz`
[INFO] [stdout]   --> src/bin.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let hz = 130.81; // 130.81 = c3, 261.63 = c4, 523.25 = c5
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_hz`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "c4406f37461bed36eaa1ece957a247efb6652e666291dd33c4991c60147aa1a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4406f37461bed36eaa1ece957a247efb6652e666291dd33c4991c60147aa1a9", kill_on_drop: false }`
[INFO] [stdout] c4406f37461bed36eaa1ece957a247efb6652e666291dd33c4991c60147aa1a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ed854c642cd93d1a8d5b84971e1546b971d5788b4e58ce89ab4497356cc3871f
[INFO] running `Command { std: "docker" "start" "-a" "ed854c642cd93d1a8d5b84971e1546b971d5788b4e58ce89ab4497356cc3871f", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `hz`
[INFO] [stderr]   --> src/bin.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let hz = 130.81; // 130.81 = c3, 261.63 = c4, 523.25 = c5
[INFO] [stderr]    |         ^^ help: if this is intentional, prefix it with an underscore: `_hz`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `sampsyn` (bin "testbin" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sampsyn-e9bf63387173b8d9)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... 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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/testbin-dd271a530d9f731a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sampsyn
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ed854c642cd93d1a8d5b84971e1546b971d5788b4e58ce89ab4497356cc3871f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed854c642cd93d1a8d5b84971e1546b971d5788b4e58ce89ab4497356cc3871f", kill_on_drop: false }`
[INFO] [stdout] ed854c642cd93d1a8d5b84971e1546b971d5788b4e58ce89ab4497356cc3871f