[INFO] fetching crate handoff_counter 0.8.5...
[INFO] documenting handoff_counter-0.8.5 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate handoff_counter 0.8.5 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate handoff_counter 0.8.5 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate handoff_counter 0.8.5
[INFO] finished tweaking crates.io crate handoff_counter 0.8.5
[INFO] tweaked toml for crates.io crate handoff_counter 0.8.5 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd714276964c9804bb442bb3f211371b4e33983eb065395899768320f0dbc150
[INFO] running `Command { std: "docker" "start" "-a" "bd714276964c9804bb442bb3f211371b4e33983eb065395899768320f0dbc150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd714276964c9804bb442bb3f211371b4e33983eb065395899768320f0dbc150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd714276964c9804bb442bb3f211371b4e33983eb065395899768320f0dbc150", kill_on_drop: false }`
[INFO] [stdout] bd714276964c9804bb442bb3f211371b4e33983eb065395899768320f0dbc150
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5cf2bee6f22b355939ffe6b2da992efe4f21fdb701998f78cb15b24874527553
[INFO] running `Command { std: "docker" "start" "-a" "5cf2bee6f22b355939ffe6b2da992efe4f21fdb701998f78cb15b24874527553", kill_on_drop: false }`
[INFO] [stderr]     Checking handoff_counter v0.8.5 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting handoff_counter v0.8.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/handoff_counter.rs:55:13
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut v = self.vals.get_mut(&self.id).unwrap();
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` 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 1.12s
[INFO] running `Command { std: "docker" "inspect" "5cf2bee6f22b355939ffe6b2da992efe4f21fdb701998f78cb15b24874527553", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cf2bee6f22b355939ffe6b2da992efe4f21fdb701998f78cb15b24874527553", kill_on_drop: false }`
[INFO] [stdout] 5cf2bee6f22b355939ffe6b2da992efe4f21fdb701998f78cb15b24874527553
