[INFO] fetching crate copperline 0.3.0...
[INFO] documenting copperline-0.3.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate copperline 0.3.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate copperline 0.3.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate copperline 0.3.0
[INFO] finished tweaking crates.io crate copperline 0.3.0
[INFO] tweaked toml for crates.io crate copperline 0.3.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-segmentation v0.1.3
[INFO] [stderr]   Downloaded nix v0.4.3
[INFO] [stderr]   Downloaded strcursor v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75b308ae72db2438605fef8af50c54769fc5e8189e1acaeb82d20f2e9a1b4111
[INFO] running `Command { std: "docker" "start" "-a" "75b308ae72db2438605fef8af50c54769fc5e8189e1acaeb82d20f2e9a1b4111", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75b308ae72db2438605fef8af50c54769fc5e8189e1acaeb82d20f2e9a1b4111", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75b308ae72db2438605fef8af50c54769fc5e8189e1acaeb82d20f2e9a1b4111", kill_on_drop: false }`
[INFO] [stdout] 75b308ae72db2438605fef8af50c54769fc5e8189e1acaeb82d20f2e9a1b4111
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d2e141eae40c9a12b274ab159e2e974b42b515ca70ba463ea9f25529a12af7a
[INFO] running `Command { std: "docker" "start" "-a" "7d2e141eae40c9a12b274ab159e2e974b42b515ca70ba463ea9f25529a12af7a", kill_on_drop: false }`
[INFO] [stderr]     Checking bitflags v0.3.3
[INFO] [stderr]     Checking libc v0.1.12
[INFO] [stderr]     Checking unicode-segmentation v0.1.3
[INFO] [stderr]     Checking nix v0.4.3
[INFO] [stderr]     Checking strcursor v0.1.0
[INFO] [stderr]  Documenting copperline v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/lib.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 for _ in (0..len) {
[INFO] [stdout]    |                          ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/lib.rs:109:26
[INFO] [stdout]     |
[INFO] [stdout] 109 |                 for _ in (0..len) {
[INFO] [stdout]     |                          ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.37s
[INFO] running `Command { std: "docker" "inspect" "7d2e141eae40c9a12b274ab159e2e974b42b515ca70ba463ea9f25529a12af7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d2e141eae40c9a12b274ab159e2e974b42b515ca70ba463ea9f25529a12af7a", kill_on_drop: false }`
[INFO] [stdout] 7d2e141eae40c9a12b274ab159e2e974b42b515ca70ba463ea9f25529a12af7a
