[INFO] cloning repository https://github.com/guolei1204/rust_lee
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/guolei1204/rust_lee" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguolei1204%2Frust_lee", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguolei1204%2Frust_lee'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7aacdd08becdbdd13fa83a82ec2a99e36f7bd6aa
[INFO] documenting guolei1204/rust_lee against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguolei1204%2Frust_lee" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/guolei1204/rust_lee on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/guolei1204/rust_lee
[INFO] finished tweaking git repo https://github.com/guolei1204/rust_lee
[INFO] tweaked toml for git repo https://github.com/guolei1204/rust_lee written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/guolei1204/rust_lee already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ab7ac1219c2647854462484e0abdadd38026ed599345c02c1239e066571eddf
[INFO] running `Command { std: "docker" "start" "-a" "7ab7ac1219c2647854462484e0abdadd38026ed599345c02c1239e066571eddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ab7ac1219c2647854462484e0abdadd38026ed599345c02c1239e066571eddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ab7ac1219c2647854462484e0abdadd38026ed599345c02c1239e066571eddf", kill_on_drop: false }`
[INFO] [stdout] 7ab7ac1219c2647854462484e0abdadd38026ed599345c02c1239e066571eddf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "RUSTDOCFLAGS=--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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2eea7e697f85127d9c0804343de39f42583c83bf02117ffeca43ad7fa4abcb7b
[INFO] running `Command { std: "docker" "start" "-a" "2eea7e697f85127d9c0804343de39f42583c83bf02117ffeca43ad7fa4abcb7b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]     Checking num_threads v0.1.3
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking time v0.3.7
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]  Documenting lee_demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/n_queens.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |         if (board[up_row as usize][column as usize] == 'Q') {
[INFO] [stdout]    |            ^                                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 38 -         if (board[up_row as usize][column as usize] == 'Q') {
[INFO] [stdout] 38 +         if board[up_row as usize][column as usize] == 'Q' {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 49s
[INFO] running `Command { std: "docker" "inspect" "2eea7e697f85127d9c0804343de39f42583c83bf02117ffeca43ad7fa4abcb7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2eea7e697f85127d9c0804343de39f42583c83bf02117ffeca43ad7fa4abcb7b", kill_on_drop: false }`
[INFO] [stdout] 2eea7e697f85127d9c0804343de39f42583c83bf02117ffeca43ad7fa4abcb7b