[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/beta-1.37-6/sources/1.36.0/gh/System-rat/backup-rat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/System-rat/backup-rat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/System-rat/backup-rat" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/System-rat/backup-rat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of System-rat/backup-rat on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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/beta-1.37-6/sources/1.36.0/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/beta-1.37-6/sources/beta-2019-07-23/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" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing System-rat/backup-rat against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] f44225bda4a9f65fdf8dd570924c899cf056a6124b08d3e84bcf560d1c74d90b
[INFO] running `"docker" "start" "-a" "f44225bda4a9f65fdf8dd570924c899cf056a6124b08d3e84bcf560d1c74d90b"`
[INFO] [stderr]    Compiling directories v1.0.1
[INFO] [stderr]    Compiling regex v1.0.1
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 16.64s
[INFO] running `"docker" "inspect" "f44225bda4a9f65fdf8dd570924c899cf056a6124b08d3e84bcf560d1c74d90b"`
[INFO] running `"docker" "rm" "-f" "f44225bda4a9f65fdf8dd570924c899cf056a6124b08d3e84bcf560d1c74d90b"`
[INFO] [stdout] f44225bda4a9f65fdf8dd570924c899cf056a6124b08d3e84bcf560d1c74d90b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 288575b1e5a3e7cac42561efe3f011e7f34d3b11e5f3d03fd076bb198c8f9f09
[INFO] running `"docker" "start" "-a" "288575b1e5a3e7cac42561efe3f011e7f34d3b11e5f3d03fd076bb198c8f9f09"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 2.53s
[INFO] running `"docker" "inspect" "288575b1e5a3e7cac42561efe3f011e7f34d3b11e5f3d03fd076bb198c8f9f09"`
[INFO] running `"docker" "rm" "-f" "288575b1e5a3e7cac42561efe3f011e7f34d3b11e5f3d03fd076bb198c8f9f09"`
[INFO] [stdout] 288575b1e5a3e7cac42561efe3f011e7f34d3b11e5f3d03fd076bb198c8f9f09
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 498140b63b0b3e05a0a745a56ec11c27c3f6fbe307d50bbf9831bc240d716439
[INFO] running `"docker" "start" "-a" "498140b63b0b3e05a0a745a56ec11c27c3f6fbe307d50bbf9831bc240d716439"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/backup_rat-34084a898f2dea1b
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test config::loading_from_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "498140b63b0b3e05a0a745a56ec11c27c3f6fbe307d50bbf9831bc240d716439"`
[INFO] running `"docker" "rm" "-f" "498140b63b0b3e05a0a745a56ec11c27c3f6fbe307d50bbf9831bc240d716439"`
[INFO] [stdout] 498140b63b0b3e05a0a745a56ec11c27c3f6fbe307d50bbf9831bc240d716439