[INFO] cloning repository https://github.com/Elgolfin/playground-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Elgolfin/playground-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElgolfin%2Fplayground-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElgolfin%2Fplayground-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4de9c2439e94800c7c0f04d71c1e3750614fa64a
[INFO] testing Elgolfin/playground-rust against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElgolfin%2Fplayground-rust" "/workspace/builds/worker-40/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-40/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Elgolfin/playground-rust 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/Elgolfin/playground-rust
[INFO] finished tweaking git repo https://github.com/Elgolfin/playground-rust
[INFO] tweaked toml for git repo https://github.com/Elgolfin/playground-rust written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] crate git repo https://github.com/Elgolfin/playground-rust 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-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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] ab5df2f9187082628f9bdfa1a735043ec45de52b403a417d5ca418c3508fff19
[INFO] running `Command { std: "docker" "start" "-a" "ab5df2f9187082628f9bdfa1a735043ec45de52b403a417d5ca418c3508fff19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab5df2f9187082628f9bdfa1a735043ec45de52b403a417d5ca418c3508fff19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab5df2f9187082628f9bdfa1a735043ec45de52b403a417d5ca418c3508fff19", kill_on_drop: false }`
[INFO] [stdout] ab5df2f9187082628f9bdfa1a735043ec45de52b403a417d5ca418c3508fff19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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] 613aec6cbfc51f9b87b29b02983c15b35d10ea3d9343334d06b7c0c5f451e96c
[INFO] running `Command { std: "docker" "start" "-a" "613aec6cbfc51f9b87b29b02983c15b35d10ea3d9343334d06b7c0c5f451e96c", kill_on_drop: false }`
[INFO] [stderr]    Compiling playground-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "613aec6cbfc51f9b87b29b02983c15b35d10ea3d9343334d06b7c0c5f451e96c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "613aec6cbfc51f9b87b29b02983c15b35d10ea3d9343334d06b7c0c5f451e96c", kill_on_drop: false }`
[INFO] [stdout] 613aec6cbfc51f9b87b29b02983c15b35d10ea3d9343334d06b7c0c5f451e96c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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] c9211a2ef334fb03cddbe1c6de7227ae7122da853cc60f6b286dd504ca6ebd5f
[INFO] running `Command { std: "docker" "start" "-a" "c9211a2ef334fb03cddbe1c6de7227ae7122da853cc60f6b286dd504ca6ebd5f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling playground-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.79s
[INFO] running `Command { std: "docker" "inspect" "c9211a2ef334fb03cddbe1c6de7227ae7122da853cc60f6b286dd504ca6ebd5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9211a2ef334fb03cddbe1c6de7227ae7122da853cc60f6b286dd504ca6ebd5f", kill_on_drop: false }`
[INFO] [stdout] c9211a2ef334fb03cddbe1c6de7227ae7122da853cc60f6b286dd504ca6ebd5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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] 52011242ea4866e3ba37bbe6cf09b6ff32eaf6e94bf9333b0bc73054f559ce37
[INFO] running `Command { std: "docker" "start" "-a" "52011242ea4866e3ba37bbe6cf09b6ff32eaf6e94bf9333b0bc73054f559ce37", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.95s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/playground_rust-4f0c0f599064a433)
[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" "52011242ea4866e3ba37bbe6cf09b6ff32eaf6e94bf9333b0bc73054f559ce37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52011242ea4866e3ba37bbe6cf09b6ff32eaf6e94bf9333b0bc73054f559ce37", kill_on_drop: false }`
[INFO] [stdout] 52011242ea4866e3ba37bbe6cf09b6ff32eaf6e94bf9333b0bc73054f559ce37