[INFO] fetching crate gray-codes 0.1.1...
[INFO] testing gray-codes-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate gray-codes 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate gray-codes 0.1.1 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 gray-codes 0.1.1
[INFO] finished tweaking crates.io crate gray-codes 0.1.1
[INFO] tweaked toml for crates.io crate gray-codes 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 28f607026e98e716779ac63eb7162abcaea6c9643c4f669341dbbed29b0a51c3
[INFO] running `Command { std: "docker" "start" "-a" "28f607026e98e716779ac63eb7162abcaea6c9643c4f669341dbbed29b0a51c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28f607026e98e716779ac63eb7162abcaea6c9643c4f669341dbbed29b0a51c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28f607026e98e716779ac63eb7162abcaea6c9643c4f669341dbbed29b0a51c3", kill_on_drop: false }`
[INFO] [stdout] 28f607026e98e716779ac63eb7162abcaea6c9643c4f669341dbbed29b0a51c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 8495eb48c8ca15f247323e7c7858bfd17f331bfa4b65d9526c0de408612fcc24
[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" "8495eb48c8ca15f247323e7c7858bfd17f331bfa4b65d9526c0de408612fcc24", kill_on_drop: false }`
[INFO] [stderr]    Compiling gray-codes v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "8495eb48c8ca15f247323e7c7858bfd17f331bfa4b65d9526c0de408612fcc24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8495eb48c8ca15f247323e7c7858bfd17f331bfa4b65d9526c0de408612fcc24", kill_on_drop: false }`
[INFO] [stdout] 8495eb48c8ca15f247323e7c7858bfd17f331bfa4b65d9526c0de408612fcc24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f63306d1c0b7ed9cf6aa6d7da95eba287210946d86213ea4b28a90a6977ea265
[INFO] running `Command { std: "docker" "start" "-a" "f63306d1c0b7ed9cf6aa6d7da95eba287210946d86213ea4b28a90a6977ea265", kill_on_drop: false }`
[INFO] [stderr]    Compiling gray-codes v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "f63306d1c0b7ed9cf6aa6d7da95eba287210946d86213ea4b28a90a6977ea265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f63306d1c0b7ed9cf6aa6d7da95eba287210946d86213ea4b28a90a6977ea265", kill_on_drop: false }`
[INFO] [stdout] f63306d1c0b7ed9cf6aa6d7da95eba287210946d86213ea4b28a90a6977ea265
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 965d9d3dc269324f453b89a7e4958d778585622aad8fdb366fd9e363d70f83fd
[INFO] running `Command { std: "docker" "start" "-a" "965d9d3dc269324f453b89a7e4958d778585622aad8fdb366fd9e363d70f83fd", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gray_codes-761c4b60cface3b7)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test gray_code_8 ... ok
[INFO] [stdout] test subsets ... ok
[INFO] [stdout] test inclusion_exclusion ... ok
[INFO] [stdout] test gray_code_16 ... ok
[INFO] [stdout] test gray_code_32 ... ok
[INFO] [stdout] test gray_code_64 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.25s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests gray-codes
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test src/lib.rs - GrayCode32 (line 252) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode64 (line 254) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode32 (line 227) ... ok
[INFO] [stdout] test src/lib.rs - InclusionExclusion (line 276) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode8 (line 248) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode16 (line 250) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode8 (line 223) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode16 (line 225) ... ok
[INFO] [stdout] test src/lib.rs - GrayCode64 (line 229) ... ok
[INFO] [stdout] test src/lib.rs - Subsets (line 420) ... ok
[INFO] [stdout] test src/lib.rs - Subsets (line 394) ... ok
[INFO] [stdout] test src/lib.rs - InclusionExclusion (line 250) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.11s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "965d9d3dc269324f453b89a7e4958d778585622aad8fdb366fd9e363d70f83fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "965d9d3dc269324f453b89a7e4958d778585622aad8fdb366fd9e363d70f83fd", kill_on_drop: false }`
[INFO] [stdout] 965d9d3dc269324f453b89a7e4958d778585622aad8fdb366fd9e363d70f83fd