[INFO] cloning repository https://github.com/milescaprio/conwaysgameoflife
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/milescaprio/conwaysgameoflife" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmilescaprio%2Fconwaysgameoflife", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmilescaprio%2Fconwaysgameoflife'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a6af5b8697ba7c1de75ab7a01213c090e4831b68
[INFO] checking milescaprio/conwaysgameoflife against try#18c1d185ac7a6a3bf399296b35e4b2736809a756 for pr-146972
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmilescaprio%2Fconwaysgameoflife" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/milescaprio/conwaysgameoflife
[INFO] finished tweaking git repo https://github.com/milescaprio/conwaysgameoflife
[INFO] tweaked toml for git repo https://github.com/milescaprio/conwaysgameoflife written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/milescaprio/conwaysgameoflife on toolchain 18c1d185ac7a6a3bf399296b35e4b2736809a756
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/milescaprio/conwaysgameoflife already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking milescaprio/conwaysgameoflife against try#18c1d185ac7a6a3bf399296b35e4b2736809a756 for pr-146972
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmilescaprio%2Fconwaysgameoflife" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/milescaprio/conwaysgameoflife
[INFO] finished tweaking git repo https://github.com/milescaprio/conwaysgameoflife
[INFO] tweaked toml for git repo https://github.com/milescaprio/conwaysgameoflife written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/milescaprio/conwaysgameoflife on toolchain 18c1d185ac7a6a3bf399296b35e4b2736809a756
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/milescaprio/conwaysgameoflife already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d0b4b1f1a0d8a819642e72bcd6e1740da882f5e993a09598ace1a226d01f418
[INFO] running `Command { std: "docker" "start" "-a" "4d0b4b1f1a0d8a819642e72bcd6e1740da882f5e993a09598ace1a226d01f418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d0b4b1f1a0d8a819642e72bcd6e1740da882f5e993a09598ace1a226d01f418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d0b4b1f1a0d8a819642e72bcd6e1740da882f5e993a09598ace1a226d01f418", kill_on_drop: false }`
[INFO] [stdout] 4d0b4b1f1a0d8a819642e72bcd6e1740da882f5e993a09598ace1a226d01f418
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba2f313738ddfbf62cb6febdf1f92a3f0f4fbf1e7cf62a6d4cb3fcb7256b1d9e
[INFO] running `Command { std: "docker" "start" "-a" "ba2f313738ddfbf62cb6febdf1f92a3f0f4fbf1e7cf62a6d4cb3fcb7256b1d9e", kill_on_drop: false }`
[INFO] [stderr]     Checking conwaysgameoflife v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | /         /// Algorithm 1 for next board.
[INFO] [stdout] 38 | |         /// Time complexity for array operations:
[INFO] [stdout] 39 | |         /// 9 * size for neighbor iterating and counting (8 for neighbor, 1 for write in new vec)
[INFO] [stdout] 40 | |         /// size for regenerating
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |         /// Birth: 3 adjacent cells
[INFO] [stdout] 48 | |         /// Death (by overcrowding): 4+ adjacent cells
[INFO] [stdout]    | |______________________________________________________^
[INFO] [stdout] 49 |           let length = self.board.len();
[INFO] [stdout]    |           ------------------------------ rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | /         /// Algorithm 1 for next board.
[INFO] [stdout] 38 | |         /// Time complexity for array operations:
[INFO] [stdout] 39 | |         /// 9 * size for neighbor iterating and counting (8 for neighbor, 1 for write in new vec)
[INFO] [stdout] 40 | |         /// size for regenerating
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |         /// Birth: 3 adjacent cells
[INFO] [stdout] 48 | |         /// Death (by overcrowding): 4+ adjacent cells
[INFO] [stdout]    | |______________________________________________________^
[INFO] [stdout] 49 |           let length = self.board.len();
[INFO] [stdout]    |           ------------------------------ rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = help: use `//` for a plain comment
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `O` should have a snake case name
[INFO] [stdout]   --> src/main.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let O = true;
[INFO] [stdout]    |         ^ help: convert the identifier to snake case (notice the capitalization): `o`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `O` should have a snake case name
[INFO] [stdout]   --> src/main.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let O = true;
[INFO] [stdout]    |         ^ help: convert the identifier to snake case (notice the capitalization): `o`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "ba2f313738ddfbf62cb6febdf1f92a3f0f4fbf1e7cf62a6d4cb3fcb7256b1d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba2f313738ddfbf62cb6febdf1f92a3f0f4fbf1e7cf62a6d4cb3fcb7256b1d9e", kill_on_drop: false }`
[INFO] [stdout] ba2f313738ddfbf62cb6febdf1f92a3f0f4fbf1e7cf62a6d4cb3fcb7256b1d9e