[INFO] updating cached repository https://github.com/nuew/margen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c19ecf0f75d01b6fd67e71d87d11cffefcac93cd
[INFO] documenting nuew/margen against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnuew%2Fmargen" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nuew/margen on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nuew/margen
[INFO] finished tweaking git repo https://github.com/nuew/margen
[INFO] tweaked toml for git repo https://github.com/nuew/margen written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/nuew/margen already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c20a978caa17c86e88d07bb3363a7ddfeed92440cee27cadef4da37d67dd258
[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" "0c20a978caa17c86e88d07bb3363a7ddfeed92440cee27cadef4da37d67dd258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c20a978caa17c86e88d07bb3363a7ddfeed92440cee27cadef4da37d67dd258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c20a978caa17c86e88d07bb3363a7ddfeed92440cee27cadef4da37d67dd258", kill_on_drop: false }`
[INFO] [stdout] 0c20a978caa17c86e88d07bb3363a7ddfeed92440cee27cadef4da37d67dd258
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "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] c9cc8f9df24f7889062c40b529c7a36681abe695a9d89579dcc80509428e75dd
[INFO] running `Command { std: "docker" "start" "-a" "c9cc8f9df24f7889062c40b529c7a36681abe695a9d89579dcc80509428e75dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.38
[INFO] [stderr]     Checking rustc-serialize v0.3.21
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking num_cpus v1.1.0
[INFO] [stderr]     Checking deque v0.3.1
[INFO] [stderr]     Checking enum_primitive v0.1.0
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking rayon v0.5.0
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking gif v0.9.0
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]    Compiling miniz-sys v0.1.7
[INFO] [stderr]    Compiling lua52-sys v0.0.4
[INFO] [stderr]     Checking jpeg-decoder v0.1.8
[INFO] [stderr]     Checking flate2 v0.2.14
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking png v0.5.2
[INFO] [stderr]     Checking num-bigint v0.1.35
[INFO] [stderr]     Checking num-rational v0.1.35
[INFO] [stderr]     Checking image v0.10.3
[INFO] [stderr]     Checking hlua v0.1.9
[INFO] [stderr]  Documenting margen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.68s
[INFO] running `Command { std: "docker" "inspect" "c9cc8f9df24f7889062c40b529c7a36681abe695a9d89579dcc80509428e75dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9cc8f9df24f7889062c40b529c7a36681abe695a9d89579dcc80509428e75dd", kill_on_drop: false }`
[INFO] [stdout] c9cc8f9df24f7889062c40b529c7a36681abe695a9d89579dcc80509428e75dd