[INFO] cloning repository https://github.com/ndfsa/img-cmp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ndfsa/img-cmp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fndfsa%2Fimg-cmp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fndfsa%2Fimg-cmp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f848c54bb6902162dd0b60d25b4a39785e0e83e2
[INFO] documenting ndfsa/img-cmp 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%2Fndfsa%2Fimg-cmp" "/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/ndfsa/img-cmp 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/ndfsa/img-cmp
[INFO] finished tweaking git repo https://github.com/ndfsa/img-cmp
[INFO] tweaked toml for git repo https://github.com/ndfsa/img-cmp written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ndfsa/img-cmp 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] 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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 124206c3df4976ddd9e93c84d0e20dc046e9693de4bc431d4c0fde20feb8c720
[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" "124206c3df4976ddd9e93c84d0e20dc046e9693de4bc431d4c0fde20feb8c720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "124206c3df4976ddd9e93c84d0e20dc046e9693de4bc431d4c0fde20feb8c720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "124206c3df4976ddd9e93c84d0e20dc046e9693de4bc431d4c0fde20feb8c720", kill_on_drop: false }`
[INFO] [stdout] 124206c3df4976ddd9e93c84d0e20dc046e9693de4bc431d4c0fde20feb8c720
[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" "+beta-2022-05-20" "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] 0287620e4efa80a34c31824a019eb4cde5672ba1361fcf891ef482fc7a38ee52
[INFO] running `Command { std: "docker" "start" "-a" "0287620e4efa80a34c31824a019eb4cde5672ba1361fcf891ef482fc7a38ee52", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]     Checking transpose v0.1.0
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking gif v0.11.3
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking num-rational v0.3.2
[INFO] [stderr]     Checking num-iter v0.1.42
[INFO] [stderr]     Checking transpose v0.2.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rustfft v3.0.1
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking generic-array v0.14.4
[INFO] [stderr]     Checking rustdct v0.4.0
[INFO] [stderr]     Checking crypto-common v0.1.0
[INFO] [stderr]     Checking block-buffer v0.10.0
[INFO] [stderr]     Checking digest v0.10.0
[INFO] [stderr]     Checking sha-1 v0.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking serde v1.0.133
[INFO] [stderr]     Checking serde_json v1.0.74
[INFO] [stderr]     Checking img_hash v3.2.0
[INFO] [stderr]  Documenting img-cmp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 59.12s
[INFO] running `Command { std: "docker" "inspect" "0287620e4efa80a34c31824a019eb4cde5672ba1361fcf891ef482fc7a38ee52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0287620e4efa80a34c31824a019eb4cde5672ba1361fcf891ef482fc7a38ee52", kill_on_drop: false }`
[INFO] [stdout] 0287620e4efa80a34c31824a019eb4cde5672ba1361fcf891ef482fc7a38ee52