[INFO] cloning repository https://github.com/davetttt/ttt_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davetttt/ttt_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavetttt%2Fttt_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavetttt%2Fttt_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da0b52d21262d7f8c8fc70ea1f5b02a978d43af2
[INFO] documenting davetttt/ttt_rust against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavetttt%2Fttt_rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davetttt/ttt_rust on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/davetttt/ttt_rust
[INFO] finished tweaking git repo https://github.com/davetttt/ttt_rust
[INFO] tweaked toml for git repo https://github.com/davetttt/ttt_rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/davetttt/ttt_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b557fda8bcad347823a30a9351c63ecebdc7d2323ae2ffeb2bd3cd6a42d8044b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b557fda8bcad347823a30a9351c63ecebdc7d2323ae2ffeb2bd3cd6a42d8044b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b557fda8bcad347823a30a9351c63ecebdc7d2323ae2ffeb2bd3cd6a42d8044b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b557fda8bcad347823a30a9351c63ecebdc7d2323ae2ffeb2bd3cd6a42d8044b", kill_on_drop: false }`
[INFO] [stdout] b557fda8bcad347823a30a9351c63ecebdc7d2323ae2ffeb2bd3cd6a42d8044b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] 83ef6636b12378a93eb582d78b8373c2f8d59bbad8949551ac25ed1398f276eb
[INFO] running `Command { std: "docker" "start" "-a" "83ef6636b12378a93eb582d78b8373c2f8d59bbad8949551ac25ed1398f276eb", kill_on_drop: false }`
[INFO] [stderr]  Documenting ttt_rust v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: invalid suffix `us` for integer literal
[INFO] [stdout]  --> src/board.rs:8:24
[INFO] [stdout]   |
[INFO] [stdout] 8 |         Board { board:[0us; 9] }
[INFO] [stdout]   |                        ^^^ invalid suffix `us`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the suffix must be one of the integral types (`u32`, `isize`, etc)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::io::BufferedReader`
[INFO] [stdout]  --> src/io.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::BufferedReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^ no `BufferedReader` in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `ttt_rust`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name ttt_rust src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.0.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "83ef6636b12378a93eb582d78b8373c2f8d59bbad8949551ac25ed1398f276eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83ef6636b12378a93eb582d78b8373c2f8d59bbad8949551ac25ed1398f276eb", kill_on_drop: false }`
[INFO] [stdout] 83ef6636b12378a93eb582d78b8373c2f8d59bbad8949551ac25ed1398f276eb
