[INFO] fetching crate hrtb-lending-iterator 0.3.1...
[INFO] checking hrtb-lending-iterator-0.3.1 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate hrtb-lending-iterator 0.3.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate hrtb-lending-iterator 0.3.1 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hrtb-lending-iterator 0.3.1
[INFO] finished tweaking crates.io crate hrtb-lending-iterator 0.3.1
[INFO] tweaked toml for crates.io crate hrtb-lending-iterator 0.3.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c42e8d8784fae9cd6b2bd1bd4e654103ea8fbcfbefbbdc6bcb63038fabbbc30c
[INFO] running `Command { std: "docker" "start" "-a" "c42e8d8784fae9cd6b2bd1bd4e654103ea8fbcfbefbbdc6bcb63038fabbbc30c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c42e8d8784fae9cd6b2bd1bd4e654103ea8fbcfbefbbdc6bcb63038fabbbc30c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c42e8d8784fae9cd6b2bd1bd4e654103ea8fbcfbefbbdc6bcb63038fabbbc30c", kill_on_drop: false }`
[INFO] [stdout] c42e8d8784fae9cd6b2bd1bd4e654103ea8fbcfbefbbdc6bcb63038fabbbc30c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTFLAGS=--cap-lints=forbid" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81d938bcd6109cae9316c8cf4da04957fb9e1f88db131e44e106e4b4be42e952
[INFO] running `Command { std: "docker" "start" "-a" "81d938bcd6109cae9316c8cf4da04957fb9e1f88db131e44e106e4b4be42e952", kill_on_drop: false }`
[INFO] [stderr]     Checking hrtb-lending-iterator v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `iter`
[INFO] [stdout]   --> tests/lending_iterator.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let mut iter = v.windows(2).into_lend_iter().to_owned_item();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/lending_iterator.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let mut iter = v.windows(2).into_lend_iter().to_owned_item();
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "81d938bcd6109cae9316c8cf4da04957fb9e1f88db131e44e106e4b4be42e952", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81d938bcd6109cae9316c8cf4da04957fb9e1f88db131e44e106e4b4be42e952", kill_on_drop: false }`
[INFO] [stdout] 81d938bcd6109cae9316c8cf4da04957fb9e1f88db131e44e106e4b4be42e952