[INFO] cloning repository https://github.com/procedural-rust/Maze_generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/procedural-rust/Maze_generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprocedural-rust%2FMaze_generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprocedural-rust%2FMaze_generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5740be4aac6004a6c4a2f87a0e98c603aad1f90e
[INFO] documenting procedural-rust/Maze_generator 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%2Fprocedural-rust%2FMaze_generator" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/procedural-rust/Maze_generator 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/procedural-rust/Maze_generator
[INFO] finished tweaking git repo https://github.com/procedural-rust/Maze_generator
[INFO] tweaked toml for git repo https://github.com/procedural-rust/Maze_generator written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/procedural-rust/Maze_generator 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]  Downloading crates ...
[INFO] [stderr]   Downloaded png v0.15.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 86550c2955d6052b635fdab8d63da6f42677f6e15a17d20bfb9c999005b3499a
[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" "86550c2955d6052b635fdab8d63da6f42677f6e15a17d20bfb9c999005b3499a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86550c2955d6052b635fdab8d63da6f42677f6e15a17d20bfb9c999005b3499a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86550c2955d6052b635fdab8d63da6f42677f6e15a17d20bfb9c999005b3499a", kill_on_drop: false }`
[INFO] [stdout] 86550c2955d6052b635fdab8d63da6f42677f6e15a17d20bfb9c999005b3499a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2754fe813addc29c832d6d6c4d9bf49978f7b94376ddcf490bce8628ef8e1ef7
[INFO] running `Command { std: "docker" "start" "-a" "2754fe813addc29c832d6d6c4d9bf49978f7b94376ddcf490bce8628ef8e1ef7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling rayon-core v1.6.1
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking png v0.15.1
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking clap v2.27.1
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking rayon v1.2.1
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]     Checking image v0.22.3
[INFO] [stderr]  Documenting maze_generation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.74s
[INFO] running `Command { std: "docker" "inspect" "2754fe813addc29c832d6d6c4d9bf49978f7b94376ddcf490bce8628ef8e1ef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2754fe813addc29c832d6d6c4d9bf49978f7b94376ddcf490bce8628ef8e1ef7", kill_on_drop: false }`
[INFO] [stdout] 2754fe813addc29c832d6d6c4d9bf49978f7b94376ddcf490bce8628ef8e1ef7