[INFO] cloning repository https://github.com/alessioalex/rustbook-chapters-1-6
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alessioalex/rustbook-chapters-1-6" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falessioalex%2Frustbook-chapters-1-6", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falessioalex%2Frustbook-chapters-1-6'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1b1b5ff00913b31cdca061e0c802bdf331f74844
[INFO] checking alessioalex/rustbook-chapters-1-6 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falessioalex%2Frustbook-chapters-1-6" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alessioalex/rustbook-chapters-1-6 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alessioalex/rustbook-chapters-1-6
[INFO] finished tweaking git repo https://github.com/alessioalex/rustbook-chapters-1-6
[INFO] tweaked toml for git repo https://github.com/alessioalex/rustbook-chapters-1-6 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/alessioalex/rustbook-chapters-1-6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7bbbad1597bcbe94d0c17c04d61d56b4c51dfeacfba5dc0dcd6c5e6652c6c79
[INFO] running `Command { std: "docker" "start" "-a" "f7bbbad1597bcbe94d0c17c04d61d56b4c51dfeacfba5dc0dcd6c5e6652c6c79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7bbbad1597bcbe94d0c17c04d61d56b4c51dfeacfba5dc0dcd6c5e6652c6c79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7bbbad1597bcbe94d0c17c04d61d56b4c51dfeacfba5dc0dcd6c5e6652c6c79", kill_on_drop: false }`
[INFO] [stdout] f7bbbad1597bcbe94d0c17c04d61d56b4c51dfeacfba5dc0dcd6c5e6652c6c79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10bc4232c0584cc43e67c06117578175babdacdee12dfdcc5f6c0fc07bfb79ac
[INFO] running `Command { std: "docker" "start" "-a" "10bc4232c0584cc43e67c06117578175babdacdee12dfdcc5f6c0fc07bfb79ac", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.23s
[INFO] running `Command { std: "docker" "inspect" "10bc4232c0584cc43e67c06117578175babdacdee12dfdcc5f6c0fc07bfb79ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10bc4232c0584cc43e67c06117578175babdacdee12dfdcc5f6c0fc07bfb79ac", kill_on_drop: false }`
[INFO] [stdout] 10bc4232c0584cc43e67c06117578175babdacdee12dfdcc5f6c0fc07bfb79ac