[INFO] fetching crate piano_keyboard 0.2.3...
[INFO] testing piano_keyboard-0.2.3 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate piano_keyboard 0.2.3 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate piano_keyboard 0.2.3 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 crates.io crate piano_keyboard 0.2.3
[INFO] finished tweaking crates.io crate piano_keyboard 0.2.3
[INFO] tweaked toml for crates.io crate piano_keyboard 0.2.3 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate piano_keyboard 0.2.3 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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] a9f21534d5c31e0c747c7046897819498f6982d55d06c0c54520f57af6c8c36e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a9f21534d5c31e0c747c7046897819498f6982d55d06c0c54520f57af6c8c36e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9f21534d5c31e0c747c7046897819498f6982d55d06c0c54520f57af6c8c36e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9f21534d5c31e0c747c7046897819498f6982d55d06c0c54520f57af6c8c36e", kill_on_drop: false }`
[INFO] [stdout] a9f21534d5c31e0c747c7046897819498f6982d55d06c0c54520f57af6c8c36e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 1198012954bec4a58670758227dabdb7c1e88d7c1ff48b89f4b0241f7a6bd724
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1198012954bec4a58670758227dabdb7c1e88d7c1ff48b89f4b0241f7a6bd724", kill_on_drop: false }`
[INFO] [stderr]    Compiling piano_keyboard v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `Command { std: "docker" "inspect" "1198012954bec4a58670758227dabdb7c1e88d7c1ff48b89f4b0241f7a6bd724", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1198012954bec4a58670758227dabdb7c1e88d7c1ff48b89f4b0241f7a6bd724", kill_on_drop: false }`
[INFO] [stdout] 1198012954bec4a58670758227dabdb7c1e88d7c1ff48b89f4b0241f7a6bd724
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4e5a18793e5c592d735c2413104a93c321b378b8a6b1f37580c67e5d784fc6ae
[INFO] running `Command { std: "docker" "start" "-a" "4e5a18793e5c592d735c2413104a93c321b378b8a6b1f37580c67e5d784fc6ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling deflate v0.7.20
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling piano_keyboard v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 13.90s
[INFO] running `Command { std: "docker" "inspect" "4e5a18793e5c592d735c2413104a93c321b378b8a6b1f37580c67e5d784fc6ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e5a18793e5c592d735c2413104a93c321b378b8a6b1f37580c67e5d784fc6ae", kill_on_drop: false }`
[INFO] [stdout] 4e5a18793e5c592d735c2413104a93c321b378b8a6b1f37580c67e5d784fc6ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 57127e094668b18f368a65f45c99f07c12cf3b04f48976ec668da8ffd173a689
[INFO] running `Command { std: "docker" "start" "-a" "57127e094668b18f368a65f45c99f07c12cf3b04f48976ec668da8ffd173a689", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 4 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/piano_keyboard-498051c752a04afc)
[INFO] [stdout] test tests::test_all_pianos ... ignored
[INFO] [stdout] test tests::test_max_width ... ok
[INFO] [stdout] test tests::test_standard_pianos ... ok
[INFO] [stderr]    Doc-tests piano_keyboard
[INFO] [stdout] test tests::test_several_widths ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[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" "57127e094668b18f368a65f45c99f07c12cf3b04f48976ec668da8ffd173a689", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57127e094668b18f368a65f45c99f07c12cf3b04f48976ec668da8ffd173a689", kill_on_drop: false }`
[INFO] [stdout] 57127e094668b18f368a65f45c99f07c12cf3b04f48976ec668da8ffd173a689