[INFO] cloning repository https://github.com/mmstick/parallel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mmstick/parallel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmstick%2Fparallel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmstick%2Fparallel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c5a0df810acae4ca04bc4c0291e9f0f00309c828
[INFO] documenting mmstick/parallel against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmstick%2Fparallel" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mmstick/parallel on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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-3/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" "+1.46.0" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ff7fdcf48bfdfb7557527464140b3633abd52a6ad048564d80342cd3de21f5c
[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" "2ff7fdcf48bfdfb7557527464140b3633abd52a6ad048564d80342cd3de21f5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ff7fdcf48bfdfb7557527464140b3633abd52a6ad048564d80342cd3de21f5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ff7fdcf48bfdfb7557527464140b3633abd52a6ad048564d80342cd3de21f5c", kill_on_drop: false }`
[INFO] [stdout] 2ff7fdcf48bfdfb7557527464140b3633abd52a6ad048564d80342cd3de21f5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b514824a42f3f47fc13a37a4af5e4e84c2eb834c05b14cf0744bcfbc5722155f
[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" "b514824a42f3f47fc13a37a4af5e4e84c2eb834c05b14cf0744bcfbc5722155f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking permutate v0.3.2
[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]    Compiling sys-info v0.5.0
[INFO] [stderr]     Checking arrayvec v0.4.6
[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 2.19s
[INFO] running `Command { std: "docker" "inspect" "b514824a42f3f47fc13a37a4af5e4e84c2eb834c05b14cf0744bcfbc5722155f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b514824a42f3f47fc13a37a4af5e4e84c2eb834c05b14cf0744bcfbc5722155f", kill_on_drop: false }`
[INFO] [stdout] b514824a42f3f47fc13a37a4af5e4e84c2eb834c05b14cf0744bcfbc5722155f