[INFO] fetching crate sampsyn 0.1.2...
[INFO] testing sampsyn-0.1.2 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate sampsyn 0.1.2 into /workspace/builds/worker-63/source
[INFO] validating manifest of crates.io crate sampsyn 0.1.2 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-63/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" "+722e1797249a965b6335aebd65d777f917e498f1" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5d6dff50f178cd967da69c34fccaf83dcd1961ae749d3618915be7071708cbbb
[INFO] running `Command { std: "docker" "start" "-a" "5d6dff50f178cd967da69c34fccaf83dcd1961ae749d3618915be7071708cbbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d6dff50f178cd967da69c34fccaf83dcd1961ae749d3618915be7071708cbbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d6dff50f178cd967da69c34fccaf83dcd1961ae749d3618915be7071708cbbb", kill_on_drop: false }`
[INFO] [stdout] 5d6dff50f178cd967da69c34fccaf83dcd1961ae749d3618915be7071708cbbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 357e8bd11fd6f6f48f3ab8bc2d6563cb0ffc0144fe50cdc8e0d6573c311ddf07
[INFO] running `Command { std: "docker" "start" "-a" "357e8bd11fd6f6f48f3ab8bc2d6563cb0ffc0144fe50cdc8e0d6573c311ddf07", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling version-compare v0.0.10
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling sdl2 v0.34.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling simpleio v0.1.2
[INFO] [stderr]    Compiling hound v3.4.0
[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 serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[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 25.82s
[INFO] running `Command { std: "docker" "inspect" "357e8bd11fd6f6f48f3ab8bc2d6563cb0ffc0144fe50cdc8e0d6573c311ddf07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "357e8bd11fd6f6f48f3ab8bc2d6563cb0ffc0144fe50cdc8e0d6573c311ddf07", kill_on_drop: false }`
[INFO] [stdout] 357e8bd11fd6f6f48f3ab8bc2d6563cb0ffc0144fe50cdc8e0d6573c311ddf07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5c89cc51015ca8837c1fa280b27ec8a39703f3807694a878ff7f296432ba996
[INFO] running `Command { std: "docker" "start" "-a" "f5c89cc51015ca8837c1fa280b27ec8a39703f3807694a878ff7f296432ba996", 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 2.95s
[INFO] running `Command { std: "docker" "inspect" "f5c89cc51015ca8837c1fa280b27ec8a39703f3807694a878ff7f296432ba996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5c89cc51015ca8837c1fa280b27ec8a39703f3807694a878ff7f296432ba996", kill_on_drop: false }`
[INFO] [stdout] f5c89cc51015ca8837c1fa280b27ec8a39703f3807694a878ff7f296432ba996
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 11b05f6bddc43741c5abcb93ab4cead77430f260a06a3f0b4143a8f1453b7dd2
[INFO] running `Command { std: "docker" "start" "-a" "11b05f6bddc43741c5abcb93ab4cead77430f260a06a3f0b4143a8f1453b7dd2", 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 0.19s
[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" "11b05f6bddc43741c5abcb93ab4cead77430f260a06a3f0b4143a8f1453b7dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11b05f6bddc43741c5abcb93ab4cead77430f260a06a3f0b4143a8f1453b7dd2", kill_on_drop: false }`
[INFO] [stdout] 11b05f6bddc43741c5abcb93ab4cead77430f260a06a3f0b4143a8f1453b7dd2