[INFO] updating cached repository https://github.com/mwttg/rust-hints-and-tricks
[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] 1cb2e90031dc2ffbe7f65ef3a51b6e8b01df2fc4
[INFO] documenting mwttg/rust-hints-and-tricks against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwttg%2Frust-hints-and-tricks" "/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/mwttg/rust-hints-and-tricks 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/mwttg/rust-hints-and-tricks
[INFO] finished tweaking git repo https://github.com/mwttg/rust-hints-and-tricks
[INFO] tweaked toml for git repo https://github.com/mwttg/rust-hints-and-tricks written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mwttg/rust-hints-and-tricks 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] 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" "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] f22bff3d3b052fcdc9c09c62dbba13bbd36875722e965cc88f5e536074a28be5
[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" "f22bff3d3b052fcdc9c09c62dbba13bbd36875722e965cc88f5e536074a28be5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f22bff3d3b052fcdc9c09c62dbba13bbd36875722e965cc88f5e536074a28be5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f22bff3d3b052fcdc9c09c62dbba13bbd36875722e965cc88f5e536074a28be5", kill_on_drop: false }`
[INFO] [stdout] f22bff3d3b052fcdc9c09c62dbba13bbd36875722e965cc88f5e536074a28be5
[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" "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] [stdout] 11f16cf1ca277aca802ec29e0dab22aef008a47d669e4012518f6e77d94975ad
[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" "11f16cf1ca277aca802ec29e0dab22aef008a47d669e4012518f6e77d94975ad", kill_on_drop: false }`
[INFO] [stderr]  Documenting rust-hints-and-tricks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "11f16cf1ca277aca802ec29e0dab22aef008a47d669e4012518f6e77d94975ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11f16cf1ca277aca802ec29e0dab22aef008a47d669e4012518f6e77d94975ad", kill_on_drop: false }`
[INFO] [stdout] 11f16cf1ca277aca802ec29e0dab22aef008a47d669e4012518f6e77d94975ad