[INFO] cloning repository https://github.com/RustaceanYou/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/RustaceanYou/rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustaceanYou%2Frust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustaceanYou%2Frust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8df927fd7675248a2caab5af040e6f713903c6d6
[INFO] testing RustaceanYou/rust-practice against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustaceanYou%2Frust-practice" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RustaceanYou/rust-practice 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/RustaceanYou/rust-practice
[INFO] finished tweaking git repo https://github.com/RustaceanYou/rust-practice
[INFO] tweaked toml for git repo https://github.com/RustaceanYou/rust-practice written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/RustaceanYou/rust-practice 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e47549b63ea6000d6904ebf8f8e76824c2d10d387e57f415eff8da6d32dfc3dd
[INFO] running `Command { std: "docker" "start" "-a" "e47549b63ea6000d6904ebf8f8e76824c2d10d387e57f415eff8da6d32dfc3dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e47549b63ea6000d6904ebf8f8e76824c2d10d387e57f415eff8da6d32dfc3dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e47549b63ea6000d6904ebf8f8e76824c2d10d387e57f415eff8da6d32dfc3dd", kill_on_drop: false }`
[INFO] [stdout] e47549b63ea6000d6904ebf8f8e76824c2d10d387e57f415eff8da6d32dfc3dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bc1f5f2bf8170cfa0944ddfff2c2936af1c0a23cb2da52c5f4427f734b896c84
[INFO] running `Command { std: "docker" "start" "-a" "bc1f5f2bf8170cfa0944ddfff2c2936af1c0a23cb2da52c5f4427f734b896c84", kill_on_drop: false }`
[INFO] [stderr]    Compiling guessing_game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected item after doc comment
[INFO] [stdout]   --> src/main.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | / /**
[INFO] [stdout] 28 | |  * let 解构
[INFO] [stdout] 29 | |  */
[INFO] [stdout]    | |___^ this doc comment doesn't document anything
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `guessing_game` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "bc1f5f2bf8170cfa0944ddfff2c2936af1c0a23cb2da52c5f4427f734b896c84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc1f5f2bf8170cfa0944ddfff2c2936af1c0a23cb2da52c5f4427f734b896c84", kill_on_drop: false }`
[INFO] [stdout] bc1f5f2bf8170cfa0944ddfff2c2936af1c0a23cb2da52c5f4427f734b896c84