[INFO] cloning repository BearOve/auto-check-rs
[INFO] running `"git" "clone" "--bare" "git://github.com/BearOve/auto-check-rs.git" "work/cache/sources/gh/BearOve/auto-check-rs"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/BearOve/auto-check-rs'...
[INFO] running `"git" "clone" "work/cache/sources/gh/BearOve/auto-check-rs" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/BearOve/auto-check-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/BearOve/auto-check-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/BearOve/auto-check-rs" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/BearOve/auto-check-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/BearOve/auto-check-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 50bc6bbe71aab2eec3c0923ace6ebc20e19fee6d
[INFO] sha for GitHub repo BearOve/auto-check-rs: 50bc6bbe71aab2eec3c0923ace6ebc20e19fee6d
[INFO] validating manifest of BearOve/auto-check-rs on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of BearOve/auto-check-rs on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing BearOve/auto-check-rs
[INFO] finished frobbing BearOve/auto-check-rs
[INFO] frobbed toml for BearOve/auto-check-rs written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/BearOve/auto-check-rs/Cargo.toml
[INFO] started frobbing BearOve/auto-check-rs
[INFO] finished frobbing BearOve/auto-check-rs
[INFO] frobbed toml for BearOve/auto-check-rs written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/BearOve/auto-check-rs/Cargo.toml
[INFO] crate BearOve/auto-check-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing BearOve/auto-check-rs against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-0/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/BearOve/auto-check-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 75c1e849f778a5e2453afea872a7103ac0907086ad33b92a75f06d0d6d9d3ae5
[INFO] running `"docker" "start" "-a" "75c1e849f778a5e2453afea872a7103ac0907086ad33b92a75f06d0d6d9d3ae5"`
[INFO] [stderr]    Compiling serde v1.0.87
[INFO] [stderr]    Compiling inotify-sys v0.1.3
[INFO] [stderr]    Compiling filetime v0.2.4
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling globset v0.4.2
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling inotify v0.6.1
[INFO] [stderr]    Compiling ignore v0.4.6
[INFO] [stderr]    Compiling mio-extras v2.0.5
[INFO] [stderr]    Compiling pretty_env_logger v0.2.5
[INFO] [stderr]    Compiling notify v4.0.9
[INFO] [stderr]    Compiling serde_derive v1.0.87
[INFO] [stderr]    Compiling docopt v1.0.2
[INFO] [stderr]    Compiling auto-check-rs v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] error: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:197:17
[INFO] [stderr]     |
[INFO] [stderr] 197 |             let mut run_commands;
[INFO] [stderr]     |                 ----^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/main.rs:1:9
[INFO] [stderr]     |
[INFO] [stderr] 1   | #![deny(warnings)]
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     = note: #[deny(unused_mut)] implied by #[deny(warnings)]
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `auto-check-rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "75c1e849f778a5e2453afea872a7103ac0907086ad33b92a75f06d0d6d9d3ae5"`
[INFO] running `"docker" "rm" "-f" "75c1e849f778a5e2453afea872a7103ac0907086ad33b92a75f06d0d6d9d3ae5"`
[INFO] [stdout] 75c1e849f778a5e2453afea872a7103ac0907086ad33b92a75f06d0d6d9d3ae5