[INFO] cloning repository https://github.com/tomabou/rust-mnist
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomabou/rust-mnist" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomabou%2Frust-mnist", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomabou%2Frust-mnist'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f27c19b9584f88faa0b47b0d936809e4343b91e0
[INFO] documenting tomabou/rust-mnist 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%2Ftomabou%2Frust-mnist" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomabou/rust-mnist 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/tomabou/rust-mnist
[INFO] finished tweaking git repo https://github.com/tomabou/rust-mnist
[INFO] tweaked toml for git repo https://github.com/tomabou/rust-mnist written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/tomabou/rust-mnist 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] [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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] ce16993e70a5c14bb583a0a756ba3fa24637dab559df0fb3c043cace25e02d1f
[INFO] running `Command { std: "docker" "start" "-a" "ce16993e70a5c14bb583a0a756ba3fa24637dab559df0fb3c043cace25e02d1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce16993e70a5c14bb583a0a756ba3fa24637dab559df0fb3c043cace25e02d1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce16993e70a5c14bb583a0a756ba3fa24637dab559df0fb3c043cace25e02d1f", kill_on_drop: false }`
[INFO] [stdout] ce16993e70a5c14bb583a0a756ba3fa24637dab559df0fb3c043cace25e02d1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] dd1c2c0ab6539c578116151dab17b512cd15f2cfc526bfe21c8a34ebbeaee1c5
[INFO] running `Command { std: "docker" "start" "-a" "dd1c2c0ab6539c578116151dab17b512cd15f2cfc526bfe21c8a34ebbeaee1c5", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]  Documenting mnist v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.24s
[INFO] running `Command { std: "docker" "inspect" "dd1c2c0ab6539c578116151dab17b512cd15f2cfc526bfe21c8a34ebbeaee1c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd1c2c0ab6539c578116151dab17b512cd15f2cfc526bfe21c8a34ebbeaee1c5", kill_on_drop: false }`
[INFO] [stdout] dd1c2c0ab6539c578116151dab17b512cd15f2cfc526bfe21c8a34ebbeaee1c5