[INFO] cloning repository https://github.com/osheng/rust_book_ex_8_3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/osheng/rust_book_ex_8_3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fosheng%2Frust_book_ex_8_3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fosheng%2Frust_book_ex_8_3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 26428fa99b1f8c0429a7a2e859b3a238cd53bf4d
[INFO] testing osheng/rust_book_ex_8_3 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fosheng%2Frust_book_ex_8_3" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/osheng/rust_book_ex_8_3 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/osheng/rust_book_ex_8_3
[INFO] finished tweaking git repo https://github.com/osheng/rust_book_ex_8_3
[INFO] tweaked toml for git repo https://github.com/osheng/rust_book_ex_8_3 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/osheng/rust_book_ex_8_3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5da72f9827e425d2cbdbd7abeba9dbef85318ce579b2274b2ef58bb09dfa900a
[INFO] running `Command { std: "docker" "start" "-a" "5da72f9827e425d2cbdbd7abeba9dbef85318ce579b2274b2ef58bb09dfa900a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5da72f9827e425d2cbdbd7abeba9dbef85318ce579b2274b2ef58bb09dfa900a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5da72f9827e425d2cbdbd7abeba9dbef85318ce579b2274b2ef58bb09dfa900a", kill_on_drop: false }`
[INFO] [stdout] 5da72f9827e425d2cbdbd7abeba9dbef85318ce579b2274b2ef58bb09dfa900a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 959b7b4bd81c0849cf952b17bca11d0a4c7b983a128586b89bc5d651a204f3d5
[INFO] running `Command { std: "docker" "start" "-a" "959b7b4bd81c0849cf952b17bca11d0a4c7b983a128586b89bc5d651a204f3d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_book_ex_8_3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "959b7b4bd81c0849cf952b17bca11d0a4c7b983a128586b89bc5d651a204f3d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "959b7b4bd81c0849cf952b17bca11d0a4c7b983a128586b89bc5d651a204f3d5", kill_on_drop: false }`
[INFO] [stdout] 959b7b4bd81c0849cf952b17bca11d0a4c7b983a128586b89bc5d651a204f3d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f6c0f0697ea2dfc51f595b057ad12e5c522b6924c349b08ed3208d47116ec41
[INFO] running `Command { std: "docker" "start" "-a" "3f6c0f0697ea2dfc51f595b057ad12e5c522b6924c349b08ed3208d47116ec41", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_book_ex_8_3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "3f6c0f0697ea2dfc51f595b057ad12e5c522b6924c349b08ed3208d47116ec41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f6c0f0697ea2dfc51f595b057ad12e5c522b6924c349b08ed3208d47116ec41", kill_on_drop: false }`
[INFO] [stdout] 3f6c0f0697ea2dfc51f595b057ad12e5c522b6924c349b08ed3208d47116ec41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1567cd93265bbe839a69123cb99e3693d1b93d29adea17c0f73928916b245ffe
[INFO] running `Command { std: "docker" "start" "-a" "1567cd93265bbe839a69123cb99e3693d1b93d29adea17c0f73928916b245ffe", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_book_ex_8_3-02e48b1d94a89828)
[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" "1567cd93265bbe839a69123cb99e3693d1b93d29adea17c0f73928916b245ffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1567cd93265bbe839a69123cb99e3693d1b93d29adea17c0f73928916b245ffe", kill_on_drop: false }`
[INFO] [stdout] 1567cd93265bbe839a69123cb99e3693d1b93d29adea17c0f73928916b245ffe