[INFO] cloning repository https://github.com/luvies/rust-mcts-impl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luvies/rust-mcts-impl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluvies%2Frust-mcts-impl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluvies%2Frust-mcts-impl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c567acfbdfc6057da77cef2f378cc026a1a36a85
[INFO] testing luvies/rust-mcts-impl against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluvies%2Frust-mcts-impl" "/workspace/builds/worker-64/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-64/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/luvies/rust-mcts-impl 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/luvies/rust-mcts-impl
[INFO] finished tweaking git repo https://github.com/luvies/rust-mcts-impl
[INFO] tweaked toml for git repo https://github.com/luvies/rust-mcts-impl written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] crate git repo https://github.com/luvies/rust-mcts-impl 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-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] 23c3d74bf36f000d06bd352a2198e5fcb9b2b2125c3929b93e5c07e79ac9e139
[INFO] running `Command { std: "docker" "start" "-a" "23c3d74bf36f000d06bd352a2198e5fcb9b2b2125c3929b93e5c07e79ac9e139", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23c3d74bf36f000d06bd352a2198e5fcb9b2b2125c3929b93e5c07e79ac9e139", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23c3d74bf36f000d06bd352a2198e5fcb9b2b2125c3929b93e5c07e79ac9e139", kill_on_drop: false }`
[INFO] [stdout] 23c3d74bf36f000d06bd352a2198e5fcb9b2b2125c3929b93e5c07e79ac9e139
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] cca128995648285c20e7d9c79081c2bafe41715e6c785426a0825e92e7de68c0
[INFO] running `Command { std: "docker" "start" "-a" "cca128995648285c20e7d9c79081c2bafe41715e6c785426a0825e92e7de68c0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling mcts_impl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.57s
[INFO] running `Command { std: "docker" "inspect" "cca128995648285c20e7d9c79081c2bafe41715e6c785426a0825e92e7de68c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cca128995648285c20e7d9c79081c2bafe41715e6c785426a0825e92e7de68c0", kill_on_drop: false }`
[INFO] [stdout] cca128995648285c20e7d9c79081c2bafe41715e6c785426a0825e92e7de68c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] 0346e819830acdece273a43190fad4fd1c1004fa010ba3d68940924286af686c
[INFO] running `Command { std: "docker" "start" "-a" "0346e819830acdece273a43190fad4fd1c1004fa010ba3d68940924286af686c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mcts_impl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.98s
[INFO] running `Command { std: "docker" "inspect" "0346e819830acdece273a43190fad4fd1c1004fa010ba3d68940924286af686c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0346e819830acdece273a43190fad4fd1c1004fa010ba3d68940924286af686c", kill_on_drop: false }`
[INFO] [stdout] 0346e819830acdece273a43190fad4fd1c1004fa010ba3d68940924286af686c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] 5a2cc98780156748906c2073e171fd9b4a5dbf013aa332f5ecc6fe0a7e634099
[INFO] running `Command { std: "docker" "start" "-a" "5a2cc98780156748906c2073e171fd9b4a5dbf013aa332f5ecc6fe0a7e634099", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.58s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mcts_impl-a2f8903860692c3b)
[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" "5a2cc98780156748906c2073e171fd9b4a5dbf013aa332f5ecc6fe0a7e634099", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a2cc98780156748906c2073e171fd9b4a5dbf013aa332f5ecc6fe0a7e634099", kill_on_drop: false }`
[INFO] [stdout] 5a2cc98780156748906c2073e171fd9b4a5dbf013aa332f5ecc6fe0a7e634099