[INFO] fetching crate hrtb-lending-iterator 0.3.1...
[INFO] checking hrtb-lending-iterator-0.3.1 against try#24cd45d7714ba43afd4b8e62fb677b069b21c4a5 for pr-129543
[INFO] extracting crate hrtb-lending-iterator 0.3.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate hrtb-lending-iterator 0.3.1 on toolchain 24cd45d7714ba43afd4b8e62fb677b069b21c4a5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "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-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 30be04e98f0c5d12b53c675e728f45c2f02c9c92ca753e41a42d183fb4e76abb
[INFO] running `Command { std: "docker" "start" "-a" "30be04e98f0c5d12b53c675e728f45c2f02c9c92ca753e41a42d183fb4e76abb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30be04e98f0c5d12b53c675e728f45c2f02c9c92ca753e41a42d183fb4e76abb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30be04e98f0c5d12b53c675e728f45c2f02c9c92ca753e41a42d183fb4e76abb", kill_on_drop: false }`
[INFO] [stdout] 30be04e98f0c5d12b53c675e728f45c2f02c9c92ca753e41a42d183fb4e76abb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+24cd45d7714ba43afd4b8e62fb677b069b21c4a5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd3efca36fadbb34a9a2692dbd541bdacad9c8315d6b828b15e40a3518d74e93
[INFO] running `Command { std: "docker" "start" "-a" "bd3efca36fadbb34a9a2692dbd541bdacad9c8315d6b828b15e40a3518d74e93", 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 0.40s
[INFO] running `Command { std: "docker" "inspect" "bd3efca36fadbb34a9a2692dbd541bdacad9c8315d6b828b15e40a3518d74e93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd3efca36fadbb34a9a2692dbd541bdacad9c8315d6b828b15e40a3518d74e93", kill_on_drop: false }`
[INFO] [stdout] bd3efca36fadbb34a9a2692dbd541bdacad9c8315d6b828b15e40a3518d74e93