[INFO] cloning repository https://github.com/reem/rust-n-queens
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/reem/rust-n-queens" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freem%2Frust-n-queens", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freem%2Frust-n-queens'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9a6e9c463cc3e0d8bd7abc3dc818499cfc097ffa
[INFO] documenting reem/rust-n-queens against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freem%2Frust-n-queens" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/reem/rust-n-queens on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/reem/rust-n-queens
[INFO] finished tweaking git repo https://github.com/reem/rust-n-queens
[INFO] tweaked toml for git repo https://github.com/reem/rust-n-queens written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/reem/rust-n-queens already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de97ca6fa729c59e0a2be7ec5f39e71ace5786cb313ff5a70924e07000ecf12d
[INFO] running `Command { std: "docker" "start" "-a" "de97ca6fa729c59e0a2be7ec5f39e71ace5786cb313ff5a70924e07000ecf12d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de97ca6fa729c59e0a2be7ec5f39e71ace5786cb313ff5a70924e07000ecf12d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de97ca6fa729c59e0a2be7ec5f39e71ace5786cb313ff5a70924e07000ecf12d", kill_on_drop: false }`
[INFO] [stdout] de97ca6fa729c59e0a2be7ec5f39e71ace5786cb313ff5a70924e07000ecf12d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d05943e6669a0af980f7c1a460acf49757cc01284ea0f98e3b439de01f211dde
[INFO] running `Command { std: "docker" "start" "-a" "d05943e6669a0af980f7c1a460acf49757cc01284ea0f98e3b439de01f211dde", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting nqueens v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `)`, `,`, `.`, `?`, or an operator, found `{`
[INFO] [stdout]    --> src/main.rs:120:22
[INFO] [stdout]     |
[INFO] [stdout] 120 |         spawn(proc() {
[INFO] [stdout]     |                     -^ expected one of `)`, `,`, `.`, `?`, or an operator
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: missing `,`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid suffix `u` for number literal
[INFO] [stdout]    --> src/main.rs:129:23
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut results = 0u;
[INFO] [stdout]     |                       ^^ invalid suffix `u`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid suffix `u` for number literal
[INFO] [stdout]    --> src/main.rs:141:25
[INFO] [stdout]     |
[INFO] [stdout] 141 |     for num in range(0, 9u) {
[INFO] [stdout]     |                         ^^ invalid suffix `u`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: invalid suffix `u` for number literal
[INFO] [stdout]    --> src/main.rs:149:25
[INFO] [stdout]     |
[INFO] [stdout] 149 |     for num in range(0, 9u) {
[INFO] [stdout]     |                         ^^ invalid suffix `u`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `uint` in this scope
[INFO] [stdout]   --> src/main.rs:21:24
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn n_queens(n: i32) -> uint {
[INFO] [stdout]    |                        ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `uint` in this scope
[INFO] [stdout]   --> src/main.rs:45:87
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn n_queens_helper(all_ones: i32, left_diags: i32, columns: i32, right_diags: i32) -> uint {
[INFO] [stdout]    |                                                                                       ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `uint` in this scope
[INFO] [stdout]    --> src/main.rs:108:33
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn parallel_n_queens(n: i32) -> uint {
[INFO] [stdout]     |                                 ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:90:13
[INFO] [stdout]    |
[INFO] [stdout] 90 |             (columns | spot),
[INFO] [stdout]    |             ^              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 90 -             (columns | spot),
[INFO] [stdout] 90 +             columns | spot,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/main.rs:124:17
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 (columns | spot),
[INFO] [stdout]     |                 ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 124 -                 (columns | spot),
[INFO] [stdout] 124 +                 columns | spot,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `nqueens`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name nqueens src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=da052907b72a0e31 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 1.0.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d05943e6669a0af980f7c1a460acf49757cc01284ea0f98e3b439de01f211dde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d05943e6669a0af980f7c1a460acf49757cc01284ea0f98e3b439de01f211dde", kill_on_drop: false }`
[INFO] [stdout] d05943e6669a0af980f7c1a460acf49757cc01284ea0f98e3b439de01f211dde