[INFO] updating cached repository https://github.com/uzushino/man-with
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/uzushino/man-with
[INFO] [stderr]    1854a50..682a93f  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 682a93f969a4852a3ccf7c2ff10098b998e644f7
[INFO] checking uzushino/man-with against master#9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7 for pr-64564
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuzushino%2Fman-with" "work/builds/worker-1/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/uzushino/man-with on toolchain 9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/uzushino/man-with
[INFO] finished tweaking git repo https://github.com/uzushino/man-with
[INFO] tweaked toml for git repo https://github.com/uzushino/man-with written to work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/uzushino/man-with already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--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" "/opt/rustwide/cargo-home/bin/cargo" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d4f31321718d95b6ca32eb6dbc7eb90a2132360f0462d7a91084d9c97e7a5bfa
[INFO] running `"docker" "start" "-a" "d4f31321718d95b6ca32eb6dbc7eb90a2132360f0462d7a91084d9c97e7a5bfa"`
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking terminal_size v0.1.8
[INFO] [stderr]    Compiling syn v0.15.27
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking backtrace v0.3.14
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking man-with v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:113:57
[INFO] [stderr]     |
[INFO] [stderr] 113 |                         let _ = prompt.lock().and_then(|mut f| {
[INFO] [stderr]     |                                                         ----^
[INFO] [stderr]     |                                                         |
[INFO] [stderr]     |                                                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:113:57
[INFO] [stderr]     |
[INFO] [stderr] 113 |                         let _ = prompt.lock().and_then(|mut f| {
[INFO] [stderr]     |                                                         ----^
[INFO] [stderr]     |                                                         |
[INFO] [stderr]     |                                                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.60s
[INFO] running `"docker" "inspect" "d4f31321718d95b6ca32eb6dbc7eb90a2132360f0462d7a91084d9c97e7a5bfa"`
[INFO] running `"docker" "rm" "-f" "d4f31321718d95b6ca32eb6dbc7eb90a2132360f0462d7a91084d9c97e7a5bfa"`
[INFO] [stdout] d4f31321718d95b6ca32eb6dbc7eb90a2132360f0462d7a91084d9c97e7a5bfa