[INFO] cloning repository https://github.com/ivan-guerra/pragmatic_programmer_exercises [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ivan-guerra/pragmatic_programmer_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivan-guerra%2Fpragmatic_programmer_exercises", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivan-guerra%2Fpragmatic_programmer_exercises'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8f8ad85616a8b7a2015d6fa5c9939bc65d37a6ec [INFO] checking ivan-guerra/pragmatic_programmer_exercises against try#0f31acebf540c89e4a4d5d114959fe91973419cb for pr-147017 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivan-guerra%2Fpragmatic_programmer_exercises" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/ivan-guerra/pragmatic_programmer_exercises [INFO] finished tweaking git repo https://github.com/ivan-guerra/pragmatic_programmer_exercises [INFO] tweaked toml for git repo https://github.com/ivan-guerra/pragmatic_programmer_exercises written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/ivan-guerra/pragmatic_programmer_exercises on toolchain 0f31acebf540c89e4a4d5d114959fe91973419cb [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/ivan-guerra/pragmatic_programmer_exercises already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] adb6fd28b42678126c81329f00eb10918555c157560c95299c3e28c19b978d41 [INFO] running `Command { std: "docker" "start" "-a" "adb6fd28b42678126c81329f00eb10918555c157560c95299c3e28c19b978d41", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "adb6fd28b42678126c81329f00eb10918555c157560c95299c3e28c19b978d41", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "adb6fd28b42678126c81329f00eb10918555c157560c95299c3e28c19b978d41", kill_on_drop: false }` [INFO] [stdout] adb6fd28b42678126c81329f00eb10918555c157560c95299c3e28c19b978d41 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+0f31acebf540c89e4a4d5d114959fe91973419cb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c8983bebac5699c40e1f214d5ac1dcca155db6ec3ba4706c853e10722ff19033 [INFO] running `Command { std: "docker" "start" "-a" "c8983bebac5699c40e1f214d5ac1dcca155db6ec3ba4706c853e10722ff19033", kill_on_drop: false }` [INFO] [stderr] Compiling 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