[INFO] cloning repository https://github.com/wasuken/contest-book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wasuken/contest-book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwasuken%2Fcontest-book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwasuken%2Fcontest-book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ace384b35c54be639df593021e3b0fba9c1382b
[INFO] documenting wasuken/contest-book 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%2Fwasuken%2Fcontest-book" "/workspace/builds/worker-16/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-16/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wasuken/contest-book 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/wasuken/contest-book
[INFO] finished tweaking git repo https://github.com/wasuken/contest-book
[INFO] tweaked toml for git repo https://github.com/wasuken/contest-book written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] crate git repo https://github.com/wasuken/contest-book 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-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 9cdf26674bd28c669939c35366cb7c35ae47c5c4a031b4b3373d7b917e613c96
[INFO] running `Command { std: "docker" "start" "-a" "9cdf26674bd28c669939c35366cb7c35ae47c5c4a031b4b3373d7b917e613c96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9cdf26674bd28c669939c35366cb7c35ae47c5c4a031b4b3373d7b917e613c96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cdf26674bd28c669939c35366cb7c35ae47c5c4a031b4b3373d7b917e613c96", kill_on_drop: false }`
[INFO] [stdout] 9cdf26674bd28c669939c35366cb7c35ae47c5c4a031b4b3373d7b917e613c96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 866faa6f4696ec4a729e3bf68c485e301513551c5a0fe2bb9c5d6bc01e5f6609
[INFO] running `Command { std: "docker" "start" "-a" "866faa6f4696ec4a729e3bf68c485e301513551c5a0fe2bb9c5d6bc01e5f6609", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking queue v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]  Documenting contest-book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/act2/chap5.rs:206:15
[INFO] [stdout]     |
[INFO] [stdout] 206 |     let result = (10000i32 * ((n + m) as i32) + kruskal(&mut es, vs.len(), x_list.len()));
[INFO] [stdout]     |                  ^                                                                      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 206 -     let result = (10000i32 * ((n + m) as i32) + kruskal(&mut es, vs.len(), x_list.len()));
[INFO] [stdout] 206 +     let result = 10000i32 * ((n + m) as i32) + kruskal(&mut es, vs.len(), x_list.len());
[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 5.07s
[INFO] running `Command { std: "docker" "inspect" "866faa6f4696ec4a729e3bf68c485e301513551c5a0fe2bb9c5d6bc01e5f6609", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "866faa6f4696ec4a729e3bf68c485e301513551c5a0fe2bb9c5d6bc01e5f6609", kill_on_drop: false }`
[INFO] [stdout] 866faa6f4696ec4a729e3bf68c485e301513551c5a0fe2bb9c5d6bc01e5f6609
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 13af31877d29dcc551547ea1388e9d2f705b15d12ec8ec00ca9a5bf8de57b21a
[INFO] running `Command { std: "docker" "start" "-a" "13af31877d29dcc551547ea1388e9d2f705b15d12ec8ec00ca9a5bf8de57b21a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking queue v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]  Documenting contest-book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/act2/chap5.rs:206:15
[INFO] [stdout]     |
[INFO] [stdout] 206 |     let result = (10000i32 * ((n + m) as i32) + kruskal(&mut es, vs.len(), x_list.len()));
[INFO] [stdout]     |                  ^                                                                      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 206 -     let result = (10000i32 * ((n + m) as i32) + kruskal(&mut es, vs.len(), x_list.len()));
[INFO] [stdout] 206 +     let result = 10000i32 * ((n + m) as i32) + kruskal(&mut es, vs.len(), x_list.len());
[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 5.90s
[INFO] running `Command { std: "docker" "inspect" "13af31877d29dcc551547ea1388e9d2f705b15d12ec8ec00ca9a5bf8de57b21a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13af31877d29dcc551547ea1388e9d2f705b15d12ec8ec00ca9a5bf8de57b21a", kill_on_drop: false }`
[INFO] [stdout] 13af31877d29dcc551547ea1388e9d2f705b15d12ec8ec00ca9a5bf8de57b21a