[INFO] fetching crate mkserial 0.0.2...
[INFO] testing mkserial-0.0.2 against 1.55.0 for beta-1.56-2
[INFO] extracting crate mkserial 0.0.2 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate mkserial 0.0.2 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 mkserial 0.0.2
[INFO] finished tweaking crates.io crate mkserial 0.0.2
[INFO] tweaked toml for crates.io crate mkserial 0.0.2 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate mkserial 0.0.2 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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] be5605a12d68aa5b28a0fae5474631355e80673658f1907832d57946acce23b2
[INFO] running `Command { std: "docker" "start" "-a" "be5605a12d68aa5b28a0fae5474631355e80673658f1907832d57946acce23b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be5605a12d68aa5b28a0fae5474631355e80673658f1907832d57946acce23b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be5605a12d68aa5b28a0fae5474631355e80673658f1907832d57946acce23b2", kill_on_drop: false }`
[INFO] [stdout] be5605a12d68aa5b28a0fae5474631355e80673658f1907832d57946acce23b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] f917cf758f0c290d3842cd814bf259e8eb7be25db4cf4a9a136a73a5215cf529
[INFO] running `Command { std: "docker" "start" "-a" "f917cf758f0c290d3842cd814bf259e8eb7be25db4cf4a9a136a73a5215cf529", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling num-bigint v0.4.0
[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 mkserial v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.40s
[INFO] running `Command { std: "docker" "inspect" "f917cf758f0c290d3842cd814bf259e8eb7be25db4cf4a9a136a73a5215cf529", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f917cf758f0c290d3842cd814bf259e8eb7be25db4cf4a9a136a73a5215cf529", kill_on_drop: false }`
[INFO] [stdout] f917cf758f0c290d3842cd814bf259e8eb7be25db4cf4a9a136a73a5215cf529
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 6143e3d3c4e1d7f3730c0d149de47f7766d8e04e6cd87c2132c2fc39415685b5
[INFO] running `Command { std: "docker" "start" "-a" "6143e3d3c4e1d7f3730c0d149de47f7766d8e04e6cd87c2132c2fc39415685b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling mkserial v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "6143e3d3c4e1d7f3730c0d149de47f7766d8e04e6cd87c2132c2fc39415685b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6143e3d3c4e1d7f3730c0d149de47f7766d8e04e6cd87c2132c2fc39415685b5", kill_on_drop: false }`
[INFO] [stdout] 6143e3d3c4e1d7f3730c0d149de47f7766d8e04e6cd87c2132c2fc39415685b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] e65743d7ab0a7d767f4a647229ad08f0369b1fa6328d7099da4b7c13834c7265
[INFO] running `Command { std: "docker" "start" "-a" "e65743d7ab0a7d767f4a647229ad08f0369b1fa6328d7099da4b7c13834c7265", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mkserial-4b0fc91a1189f48e)
[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" "e65743d7ab0a7d767f4a647229ad08f0369b1fa6328d7099da4b7c13834c7265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e65743d7ab0a7d767f4a647229ad08f0369b1fa6328d7099da4b7c13834c7265", kill_on_drop: false }`
[INFO] [stdout] e65743d7ab0a7d767f4a647229ad08f0369b1fa6328d7099da4b7c13834c7265