[INFO] cloning repository https://github.com/dgmneto/img
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dgmneto/img" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgmneto%2Fimg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgmneto%2Fimg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 810dd176f595bd1e3d1674412364af2e43b34beb
[INFO] documenting dgmneto/img against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgmneto%2Fimg" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  52% (95/180)   
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Checking out files: 100% (180/180), done.
[INFO] validating manifest of git repo https://github.com/dgmneto/img on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dgmneto/img
[INFO] finished tweaking git repo https://github.com/dgmneto/img
[INFO] tweaked toml for git repo https://github.com/dgmneto/img written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/dgmneto/img already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded kdtree v0.6.0
[INFO] [stderr]   Downloaded quicli v0.4.0
[INFO] [stderr]   Downloaded clap-verbosity-flag v0.2.0
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5162c85dbb702638e6defa8df10f0f6dd216aa38494802e2fcea852df8481cc6
[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" "5162c85dbb702638e6defa8df10f0f6dd216aa38494802e2fcea852df8481cc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5162c85dbb702638e6defa8df10f0f6dd216aa38494802e2fcea852df8481cc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5162c85dbb702638e6defa8df10f0f6dd216aa38494802e2fcea852df8481cc6", kill_on_drop: false }`
[INFO] [stdout] 5162c85dbb702638e6defa8df10f0f6dd216aa38494802e2fcea852df8481cc6
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "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] 43360ec8e6657a3c05d455784e3c0acdfb20884e646bbaa87db6f97280cbdcd7
[INFO] running `Command { std: "docker" "start" "-a" "43360ec8e6657a3c05d455784e3c0acdfb20884e646bbaa87db6f97280cbdcd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking exitfailure v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking png v0.15.2
[INFO] [stderr]     Checking globset v0.4.4
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking ignore v0.4.10
[INFO] [stderr]     Checking kdtree v0.6.0
[INFO] [stderr]     Checking globwalk v0.3.1
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking clap-verbosity-flag v0.2.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking quicli v0.4.0
[INFO] [stderr]     Checking image v0.22.3
[INFO] [stderr]  Documenting img v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.24s
[INFO] running `Command { std: "docker" "inspect" "43360ec8e6657a3c05d455784e3c0acdfb20884e646bbaa87db6f97280cbdcd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43360ec8e6657a3c05d455784e3c0acdfb20884e646bbaa87db6f97280cbdcd7", kill_on_drop: false }`
[INFO] [stdout] 43360ec8e6657a3c05d455784e3c0acdfb20884e646bbaa87db6f97280cbdcd7