[INFO] cloning repository https://github.com/goalves/rust_trait_messages_threaded
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/goalves/rust_trait_messages_threaded" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoalves%2Frust_trait_messages_threaded", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoalves%2Frust_trait_messages_threaded'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4571f71dc991251a60e4fbd697cbdacb781dd6bc
[INFO] documenting goalves/rust_trait_messages_threaded against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoalves%2Frust_trait_messages_threaded" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/goalves/rust_trait_messages_threaded 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/goalves/rust_trait_messages_threaded
[INFO] finished tweaking git repo https://github.com/goalves/rust_trait_messages_threaded
[INFO] tweaked toml for git repo https://github.com/goalves/rust_trait_messages_threaded written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/goalves/rust_trait_messages_threaded 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 167f82966fb28365db1a3096e6ac6d8a7b245b31e89816aef4af57c13ba2b5fa
[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" "167f82966fb28365db1a3096e6ac6d8a7b245b31e89816aef4af57c13ba2b5fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "167f82966fb28365db1a3096e6ac6d8a7b245b31e89816aef4af57c13ba2b5fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "167f82966fb28365db1a3096e6ac6d8a7b245b31e89816aef4af57c13ba2b5fa", kill_on_drop: false }`
[INFO] [stdout] 167f82966fb28365db1a3096e6ac6d8a7b245b31e89816aef4af57c13ba2b5fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 5505468b35aaf2d9c4a9e4e29b99989f308ef4b77cdad3f5331f382d4d66c4bd
[INFO] running `Command { std: "docker" "start" "-a" "5505468b35aaf2d9c4a9e4e29b99989f308ef4b77cdad3f5331f382d4d66c4bd", kill_on_drop: false }`
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]  Documenting rust_trait_messages_threaded v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.11s
[INFO] running `Command { std: "docker" "inspect" "5505468b35aaf2d9c4a9e4e29b99989f308ef4b77cdad3f5331f382d4d66c4bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5505468b35aaf2d9c4a9e4e29b99989f308ef4b77cdad3f5331f382d4d66c4bd", kill_on_drop: false }`
[INFO] [stdout] 5505468b35aaf2d9c4a9e4e29b99989f308ef4b77cdad3f5331f382d4d66c4bd