[INFO] updating cached repository https://github.com/mmstick/parallel
[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] c5a0df810acae4ca04bc4c0291e9f0f00309c828
[INFO] documenting mmstick/parallel against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmstick%2Fparallel" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mmstick/parallel on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mmstick/parallel
[INFO] finished tweaking git repo https://github.com/mmstick/parallel
[INFO] tweaked toml for git repo https://github.com/mmstick/parallel written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/mmstick/parallel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c53aedc4f49c30285bd311e14bf08da948e004409ace778ff441659b192919c9
[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" "c53aedc4f49c30285bd311e14bf08da948e004409ace778ff441659b192919c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c53aedc4f49c30285bd311e14bf08da948e004409ace778ff441659b192919c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c53aedc4f49c30285bd311e14bf08da948e004409ace778ff441659b192919c9", kill_on_drop: false }`
[INFO] [stdout] c53aedc4f49c30285bd311e14bf08da948e004409ace778ff441659b192919c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd7c578868a41c05c80eece78c0f782b99c2ec2efee5a123198be84b1c2778f5
[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" "bd7c578868a41c05c80eece78c0f782b99c2ec2efee5a123198be84b1c2778f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking smallvec v0.6.0
[INFO] [stderr]     Checking itoa v0.3.1
[INFO] [stderr]     Checking numtoa v0.0.7
[INFO] [stderr]     Checking wait-timeout v0.1.5
[INFO] [stderr]     Checking time v0.1.37
[INFO] [stderr]     Checking num_cpus v1.5.1
[INFO] [stderr]     Checking arrayvec v0.4.6
[INFO] [stderr]    Compiling sys-info v0.5.0
[INFO] [stderr]  Documenting parallel v0.11.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/input_iterator/lock.rs:22:62
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn try_next(&mut self, input: &mut String) -> Option<(usize)> {
[INFO] [stdout]    |                                                              ^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.19s
[INFO] running `Command { std: "docker" "inspect" "bd7c578868a41c05c80eece78c0f782b99c2ec2efee5a123198be84b1c2778f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd7c578868a41c05c80eece78c0f782b99c2ec2efee5a123198be84b1c2778f5", kill_on_drop: false }`
[INFO] [stdout] bd7c578868a41c05c80eece78c0f782b99c2ec2efee5a123198be84b1c2778f5