[INFO] cloning repository https://github.com/matiasop/parallel-merge-sort
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matiasop/parallel-merge-sort" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatiasop%2Fparallel-merge-sort", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatiasop%2Fparallel-merge-sort'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 421f705ecf885a5a85889e942791b4488305c524
[INFO] testing matiasop/parallel-merge-sort against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatiasop%2Fparallel-merge-sort" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matiasop/parallel-merge-sort 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 git repo https://github.com/matiasop/parallel-merge-sort
[INFO] finished tweaking git repo https://github.com/matiasop/parallel-merge-sort
[INFO] tweaked toml for git repo https://github.com/matiasop/parallel-merge-sort written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/matiasop/parallel-merge-sort 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 2713ae77995380d6c14b420241d1a942141bd3fbdb72bf74d78d1f15fe6b5001
[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" "2713ae77995380d6c14b420241d1a942141bd3fbdb72bf74d78d1f15fe6b5001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2713ae77995380d6c14b420241d1a942141bd3fbdb72bf74d78d1f15fe6b5001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2713ae77995380d6c14b420241d1a942141bd3fbdb72bf74d78d1f15fe6b5001", kill_on_drop: false }`
[INFO] [stdout] 2713ae77995380d6c14b420241d1a942141bd3fbdb72bf74d78d1f15fe6b5001
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 954b610e2cc1e52c35549770ac40794c94bf60711c6a9d2e95897b6344c923f1
[INFO] running `Command { std: "docker" "start" "-a" "954b610e2cc1e52c35549770ac40794c94bf60711c6a9d2e95897b6344c923f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling parallel-merge-sort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.41s
[INFO] running `Command { std: "docker" "inspect" "954b610e2cc1e52c35549770ac40794c94bf60711c6a9d2e95897b6344c923f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "954b610e2cc1e52c35549770ac40794c94bf60711c6a9d2e95897b6344c923f1", kill_on_drop: false }`
[INFO] [stdout] 954b610e2cc1e52c35549770ac40794c94bf60711c6a9d2e95897b6344c923f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 79244299068de5cedad520ce36678b507d4d8546e8e21d59b516ad7c19fca943
[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" "79244299068de5cedad520ce36678b507d4d8546e8e21d59b516ad7c19fca943", kill_on_drop: false }`
[INFO] [stderr]    Compiling parallel-merge-sort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `Command { std: "docker" "inspect" "79244299068de5cedad520ce36678b507d4d8546e8e21d59b516ad7c19fca943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79244299068de5cedad520ce36678b507d4d8546e8e21d59b516ad7c19fca943", kill_on_drop: false }`
[INFO] [stdout] 79244299068de5cedad520ce36678b507d4d8546e8e21d59b516ad7c19fca943
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 3f1bcad36847dc245df34b3cc431a35dbb0dc2aa7440c487ba2c06da155f10f5
[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" "3f1bcad36847dc245df34b3cc431a35dbb0dc2aa7440c487ba2c06da155f10f5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/parallel_merge_sort-cd9b820099ceb89e)
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::repeated_elements ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test parallel_tests::arrays_if_len_1 ... ok
[INFO] [stdout] test tests::already_ordered ... ok
[INFO] [stdout] test tests::test_base_case ... ok
[INFO] [stdout] test tests::totally_backwards ... ok
[INFO] [stdout] test parallel_tests::one_thread ... ok
[INFO] [stdout] test parallel_tests::n_workers_power_of_2 - should panic ... ok
[INFO] [stdout] test parallel_tests::n_jobs_power_of_2 - should panic ... ok
[INFO] [stdout] test parallel_tests::wrong_length - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3f1bcad36847dc245df34b3cc431a35dbb0dc2aa7440c487ba2c06da155f10f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f1bcad36847dc245df34b3cc431a35dbb0dc2aa7440c487ba2c06da155f10f5", kill_on_drop: false }`
[INFO] [stdout] 3f1bcad36847dc245df34b3cc431a35dbb0dc2aa7440c487ba2c06da155f10f5