[INFO] cloning repository https://github.com/ostanioni/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ostanioni/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fostanioni%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fostanioni%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e25cbe1c25e93b0dc896643bd0ec16584de0fb69
[INFO] testing ostanioni/rust_playground against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fostanioni%2Frust_playground" "/workspace/builds/worker-118/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-118/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ostanioni/rust_playground 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/ostanioni/rust_playground
[INFO] finished tweaking git repo https://github.com/ostanioni/rust_playground
[INFO] tweaked toml for git repo https://github.com/ostanioni/rust_playground written to /workspace/builds/worker-118/source/Cargo.toml
[INFO] crate git repo https://github.com/ostanioni/rust_playground 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-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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] 19ae8cbcae5e10129a552f2269f40a8e3b84fe235141ef2ad51259c021b5ef25
[INFO] running `Command { std: "docker" "start" "-a" "19ae8cbcae5e10129a552f2269f40a8e3b84fe235141ef2ad51259c021b5ef25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19ae8cbcae5e10129a552f2269f40a8e3b84fe235141ef2ad51259c021b5ef25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19ae8cbcae5e10129a552f2269f40a8e3b84fe235141ef2ad51259c021b5ef25", kill_on_drop: false }`
[INFO] [stdout] 19ae8cbcae5e10129a552f2269f40a8e3b84fe235141ef2ad51259c021b5ef25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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] b286f149a5548fcb5d3693243de039d145cd395f4d3fb8ee91c95d0b6e4df4ad
[INFO] running `Command { std: "docker" "start" "-a" "b286f149a5548fcb5d3693243de039d145cd395f4d3fb8ee91c95d0b6e4df4ad", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.31s
[INFO] running `Command { std: "docker" "inspect" "b286f149a5548fcb5d3693243de039d145cd395f4d3fb8ee91c95d0b6e4df4ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b286f149a5548fcb5d3693243de039d145cd395f4d3fb8ee91c95d0b6e4df4ad", kill_on_drop: false }`
[INFO] [stdout] b286f149a5548fcb5d3693243de039d145cd395f4d3fb8ee91c95d0b6e4df4ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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] 18494bfa858da58b6fbc53a1e281b3b8097d9f4df167ca428f1c24f22438f0c1
[INFO] running `Command { std: "docker" "start" "-a" "18494bfa858da58b6fbc53a1e281b3b8097d9f4df167ca428f1c24f22438f0c1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling hello_cargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `Command { std: "docker" "inspect" "18494bfa858da58b6fbc53a1e281b3b8097d9f4df167ca428f1c24f22438f0c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18494bfa858da58b6fbc53a1e281b3b8097d9f4df167ca428f1c24f22438f0c1", kill_on_drop: false }`
[INFO] [stdout] 18494bfa858da58b6fbc53a1e281b3b8097d9f4df167ca428f1c24f22438f0c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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] c82db858c3fe9d16a6677b26781816b23990bb2ea71caed795e4625b61179158
[INFO] running `Command { std: "docker" "start" "-a" "c82db858c3fe9d16a6677b26781816b23990bb2ea71caed795e4625b61179158", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 32.60s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hello_cargo-2d2c1558816a00d9)
[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" "c82db858c3fe9d16a6677b26781816b23990bb2ea71caed795e4625b61179158", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c82db858c3fe9d16a6677b26781816b23990bb2ea71caed795e4625b61179158", kill_on_drop: false }`
[INFO] [stdout] c82db858c3fe9d16a6677b26781816b23990bb2ea71caed795e4625b61179158