[INFO] fetching crate bulls-and-cows 1.0.17...
[INFO] testing bulls-and-cows-1.0.17 against 1.55.0 for beta-1.56-1
[INFO] extracting crate bulls-and-cows 1.0.17 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate bulls-and-cows 1.0.17 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bulls-and-cows 1.0.17
[INFO] finished tweaking crates.io crate bulls-and-cows 1.0.17
[INFO] tweaked toml for crates.io crate bulls-and-cows 1.0.17 written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] crate crates.io crate bulls-and-cows 1.0.17 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded permutohedron v0.2.4
[INFO] [stderr]   Downloaded aho-corasick v0.7.8
[INFO] [stderr]   Downloaded memchr v2.3.2
[INFO] [stderr]   Downloaded regex-syntax v0.6.14
[INFO] [stderr]   Downloaded random-integer v1.0.5
[INFO] [stderr]   Downloaded debug-helper v0.3.8
[INFO] [stderr]   Downloaded random-pick v1.2.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5a855f23ff57edfaa90a3f67d45e1d58ae61c77dbbc82a81595ec7f9a2a93b8
[INFO] running `Command { std: "docker" "start" "-a" "a5a855f23ff57edfaa90a3f67d45e1d58ae61c77dbbc82a81595ec7f9a2a93b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5a855f23ff57edfaa90a3f67d45e1d58ae61c77dbbc82a81595ec7f9a2a93b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5a855f23ff57edfaa90a3f67d45e1d58ae61c77dbbc82a81595ec7f9a2a93b8", kill_on_drop: false }`
[INFO] [stdout] a5a855f23ff57edfaa90a3f67d45e1d58ae61c77dbbc82a81595ec7f9a2a93b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55d1acd28ffb1f39b278f0d04a542c4b0e5cedfcd8e7a5e3449112e82ed1afa0
[INFO] running `Command { std: "docker" "start" "-a" "55d1acd28ffb1f39b278f0d04a542c4b0e5cedfcd8e7a5e3449112e82ed1afa0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling memchr v2.3.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling debug-helper v0.3.8
[INFO] [stderr]    Compiling permutohedron v0.2.4
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling aho-corasick v0.7.8
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling random-integer v1.0.5
[INFO] [stderr]    Compiling random-pick v1.2.7
[INFO] [stderr]    Compiling bulls-and-cows v1.0.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.17s
[INFO] running `Command { std: "docker" "inspect" "55d1acd28ffb1f39b278f0d04a542c4b0e5cedfcd8e7a5e3449112e82ed1afa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55d1acd28ffb1f39b278f0d04a542c4b0e5cedfcd8e7a5e3449112e82ed1afa0", kill_on_drop: false }`
[INFO] [stdout] 55d1acd28ffb1f39b278f0d04a542c4b0e5cedfcd8e7a5e3449112e82ed1afa0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1049824a64849a57c1ced6e1dfd3fbd0a982cd36f800e655bf688d2b154384fc
[INFO] running `Command { std: "docker" "start" "-a" "1049824a64849a57c1ced6e1dfd3fbd0a982cd36f800e655bf688d2b154384fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling bulls-and-cows v1.0.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "1049824a64849a57c1ced6e1dfd3fbd0a982cd36f800e655bf688d2b154384fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1049824a64849a57c1ced6e1dfd3fbd0a982cd36f800e655bf688d2b154384fc", kill_on_drop: false }`
[INFO] [stdout] 1049824a64849a57c1ced6e1dfd3fbd0a982cd36f800e655bf688d2b154384fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 720ca0278fc5e63c9867233321a0db099d57f5f32f88055d375ec6dea4aa5a02
[INFO] running `Command { std: "docker" "start" "-a" "720ca0278fc5e63c9867233321a0db099d57f5f32f88055d375ec6dea4aa5a02", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bulls_and_cows-3b1b815e04789502)
[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 bulls-and-cows
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 13) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.33s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "720ca0278fc5e63c9867233321a0db099d57f5f32f88055d375ec6dea4aa5a02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "720ca0278fc5e63c9867233321a0db099d57f5f32f88055d375ec6dea4aa5a02", kill_on_drop: false }`
[INFO] [stdout] 720ca0278fc5e63c9867233321a0db099d57f5f32f88055d375ec6dea4aa5a02