[INFO] cloning repository https://github.com/bpk-t/rust_practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bpk-t/rust_practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpk-t%2Frust_practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpk-t%2Frust_practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1df7873e9a168056f85a8118ad00cb22173bc000
[INFO] building bpk-t/rust_practice against master#222c5724ecc922fe67815f428c19f82c129d9386 for pr-97334
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbpk-t%2Frust_practice" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bpk-t/rust_practice on toolchain 222c5724ecc922fe67815f428c19f82c129d9386
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bpk-t/rust_practice
[INFO] finished tweaking git repo https://github.com/bpk-t/rust_practice
[INFO] tweaked toml for git repo https://github.com/bpk-t/rust_practice written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/bpk-t/rust_practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2748c6a2d90daa7589effb73fc522da4ea6ea924c2d58d67bbb61ecc1aa4c491
[INFO] running `Command { std: "docker" "start" "-a" "2748c6a2d90daa7589effb73fc522da4ea6ea924c2d58d67bbb61ecc1aa4c491", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2748c6a2d90daa7589effb73fc522da4ea6ea924c2d58d67bbb61ecc1aa4c491", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2748c6a2d90daa7589effb73fc522da4ea6ea924c2d58d67bbb61ecc1aa4c491", kill_on_drop: false }`
[INFO] [stdout] 2748c6a2d90daa7589effb73fc522da4ea6ea924c2d58d67bbb61ecc1aa4c491
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 143f2d1b664bb20a8451d923ba8716e9dc8238be89a861ba4adb390df02bf10b
[INFO] running `Command { std: "docker" "start" "-a" "143f2d1b664bb20a8451d923ba8716e9dc8238be89a861ba4adb390df02bf10b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0601]: `main` function not found in crate `lang_spec`
[INFO] [stdout]    --> src/bin/lang_spec.rs:120:2
[INFO] [stdout]     |
[INFO] [stdout] 120 | }
[INFO] [stdout]     |  ^ consider adding a `main` function to `src/bin/lang_spec.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_practice` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "143f2d1b664bb20a8451d923ba8716e9dc8238be89a861ba4adb390df02bf10b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "143f2d1b664bb20a8451d923ba8716e9dc8238be89a861ba4adb390df02bf10b", kill_on_drop: false }`
[INFO] [stdout] 143f2d1b664bb20a8451d923ba8716e9dc8238be89a861ba4adb390df02bf10b