[INFO] updating cached repository System-rat/backup-rat
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/System-rat/backup-rat
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/System-rat/backup-rat" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/System-rat/backup-rat"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/System-rat/backup-rat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/System-rat/backup-rat" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/System-rat/backup-rat"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/System-rat/backup-rat'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d4673eaa45d893fb68636edd99bcb51983fd2df4
[INFO] sha for GitHub repo System-rat/backup-rat: d4673eaa45d893fb68636edd99bcb51983fd2df4
[INFO] validating manifest of System-rat/backup-rat on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of System-rat/backup-rat on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing System-rat/backup-rat
[INFO] finished frobbing System-rat/backup-rat
[INFO] frobbed toml for System-rat/backup-rat written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/System-rat/backup-rat/Cargo.toml
[INFO] started frobbing System-rat/backup-rat
[INFO] finished frobbing System-rat/backup-rat
[INFO] frobbed toml for System-rat/backup-rat written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/System-rat/backup-rat/Cargo.toml
[INFO] crate System-rat/backup-rat already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking System-rat/backup-rat against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-0/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/System-rat/backup-rat:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d197b1cb8242b9a8f73925233d2f2fedddfae47b95a26faa039e95608fa32ca5
[INFO] running `"docker" "start" "-a" "d197b1cb8242b9a8f73925233d2f2fedddfae47b95a26faa039e95608fa32ca5"`
[INFO] [stderr]     Checking directories v1.0.1
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking backup_rat v0.6.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/operations.rs:186:21
[INFO] [stderr]     |
[INFO] [stderr] 186 |                     create_dir(&entry.1).is_ok();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/operations.rs:304:17
[INFO] [stderr]     |
[INFO] [stderr] 304 |                 remove_dir_all(directory.join(new_min)).is_ok();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/operations.rs:186:21
[INFO] [stderr]     |
[INFO] [stderr] 186 |                     create_dir(&entry.1).is_ok();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]    --> src/operations.rs:304:17
[INFO] [stderr]     |
[INFO] [stderr] 304 |                 remove_dir_all(directory.join(new_min)).is_ok();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.50s
[INFO] running `"docker" "inspect" "d197b1cb8242b9a8f73925233d2f2fedddfae47b95a26faa039e95608fa32ca5"`
[INFO] running `"docker" "rm" "-f" "d197b1cb8242b9a8f73925233d2f2fedddfae47b95a26faa039e95608fa32ca5"`
[INFO] [stdout] d197b1cb8242b9a8f73925233d2f2fedddfae47b95a26faa039e95608fa32ca5