[INFO] cloning repository https://github.com/IuriKintschev/TheRustProgrammingLanguageBook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/IuriKintschev/TheRustProgrammingLanguageBook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIuriKintschev%2FTheRustProgrammingLanguageBook", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIuriKintschev%2FTheRustProgrammingLanguageBook'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 129f68786b61ccf96defe0a7b8d0f2d12dd38132
[INFO] testing IuriKintschev/TheRustProgrammingLanguageBook against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIuriKintschev%2FTheRustProgrammingLanguageBook" "/workspace/builds/worker-50/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-50/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/IuriKintschev/TheRustProgrammingLanguageBook 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/IuriKintschev/TheRustProgrammingLanguageBook
[INFO] finished tweaking git repo https://github.com/IuriKintschev/TheRustProgrammingLanguageBook
[INFO] tweaked toml for git repo https://github.com/IuriKintschev/TheRustProgrammingLanguageBook written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] crate git repo https://github.com/IuriKintschev/TheRustProgrammingLanguageBook 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-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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] d9cc2a4dd816728462e828e6fe8793f18f95eca8ef3da4403e194cb2be98ac48
[INFO] running `Command { std: "docker" "start" "-a" "d9cc2a4dd816728462e828e6fe8793f18f95eca8ef3da4403e194cb2be98ac48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9cc2a4dd816728462e828e6fe8793f18f95eca8ef3da4403e194cb2be98ac48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9cc2a4dd816728462e828e6fe8793f18f95eca8ef3da4403e194cb2be98ac48", kill_on_drop: false }`
[INFO] [stdout] d9cc2a4dd816728462e828e6fe8793f18f95eca8ef3da4403e194cb2be98ac48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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] cc1c5a8144501ede0b586d92b578890b04c925c6d7f0e2d6b09c273d65d35ff1
[INFO] running `Command { std: "docker" "start" "-a" "cc1c5a8144501ede0b586d92b578890b04c925c6d7f0e2d6b09c273d65d35ff1", kill_on_drop: false }`
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.17s
[INFO] running `Command { std: "docker" "inspect" "cc1c5a8144501ede0b586d92b578890b04c925c6d7f0e2d6b09c273d65d35ff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc1c5a8144501ede0b586d92b578890b04c925c6d7f0e2d6b09c273d65d35ff1", kill_on_drop: false }`
[INFO] [stdout] cc1c5a8144501ede0b586d92b578890b04c925c6d7f0e2d6b09c273d65d35ff1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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] 4f6370c54a12cd773d8c58ed4e930d93b0bd0b450348d6f611319d62989a46b6
[INFO] running `Command { std: "docker" "start" "-a" "4f6370c54a12cd773d8c58ed4e930d93b0bd0b450348d6f611319d62989a46b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "4f6370c54a12cd773d8c58ed4e930d93b0bd0b450348d6f611319d62989a46b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f6370c54a12cd773d8c58ed4e930d93b0bd0b450348d6f611319d62989a46b6", kill_on_drop: false }`
[INFO] [stdout] 4f6370c54a12cd773d8c58ed4e930d93b0bd0b450348d6f611319d62989a46b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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] 92b44cc0bc918ec15a64f8682445aa8446fa408d3141a3837521710d645aa9ad
[INFO] running `Command { std: "docker" "start" "-a" "92b44cc0bc918ec15a64f8682445aa8446fa408d3141a3837521710d645aa9ad", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.48s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/minigrep-9bafc8464abec0f2)
[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" "92b44cc0bc918ec15a64f8682445aa8446fa408d3141a3837521710d645aa9ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92b44cc0bc918ec15a64f8682445aa8446fa408d3141a3837521710d645aa9ad", kill_on_drop: false }`
[INFO] [stdout] 92b44cc0bc918ec15a64f8682445aa8446fa408d3141a3837521710d645aa9ad