[INFO] cloning repository https://github.com/leshow/rust-filter-map-reduce-bench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leshow/rust-filter-map-reduce-bench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleshow%2Frust-filter-map-reduce-bench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleshow%2Frust-filter-map-reduce-bench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] be964def3658f3365e1f356643269ac6bb5f3734
[INFO] documenting leshow/rust-filter-map-reduce-bench against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleshow%2Frust-filter-map-reduce-bench" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leshow/rust-filter-map-reduce-bench 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/leshow/rust-filter-map-reduce-bench
[INFO] finished tweaking git repo https://github.com/leshow/rust-filter-map-reduce-bench
[INFO] tweaked toml for git repo https://github.com/leshow/rust-filter-map-reduce-bench written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/leshow/rust-filter-map-reduce-bench 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e68b88929524b81cded8d5afebbb3241081ec4a6784186b342b3ff2f46bf5ed5
[INFO] running `Command { std: "docker" "start" "-a" "e68b88929524b81cded8d5afebbb3241081ec4a6784186b342b3ff2f46bf5ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e68b88929524b81cded8d5afebbb3241081ec4a6784186b342b3ff2f46bf5ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e68b88929524b81cded8d5afebbb3241081ec4a6784186b342b3ff2f46bf5ed5", kill_on_drop: false }`
[INFO] [stdout] e68b88929524b81cded8d5afebbb3241081ec4a6784186b342b3ff2f46bf5ed5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] d07442e1e70cc6812003bd9873b591126c6ae45d065b5e81df73f7124b6eef2f
[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" "d07442e1e70cc6812003bd9873b591126c6ae45d065b5e81df73f7124b6eef2f", kill_on_drop: false }`
[INFO] [stderr]  Documenting fold-test v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/main.rs:23:14
[INFO] [stdout]    |
[INFO] [stdout] 23 |     for x in (0..iterations) {
[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 1.42s
[INFO] running `Command { std: "docker" "inspect" "d07442e1e70cc6812003bd9873b591126c6ae45d065b5e81df73f7124b6eef2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d07442e1e70cc6812003bd9873b591126c6ae45d065b5e81df73f7124b6eef2f", kill_on_drop: false }`
[INFO] [stdout] d07442e1e70cc6812003bd9873b591126c6ae45d065b5e81df73f7124b6eef2f