[INFO] crate backup_rat 0.6.0 is already in cache
[INFO] extracting crate backup_rat 0.6.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/backup_rat/0.6.0
[INFO] extracting crate backup_rat 0.6.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/backup_rat/0.6.0
[INFO] validating manifest of backup_rat-0.6.0 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 backup_rat-0.6.0 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 backup_rat-0.6.0
[INFO] finished frobbing backup_rat-0.6.0
[INFO] frobbed toml for backup_rat-0.6.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/backup_rat/0.6.0/Cargo.toml
[INFO] started frobbing backup_rat-0.6.0
[INFO] finished frobbing backup_rat-0.6.0
[INFO] frobbed toml for backup_rat-0.6.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/backup_rat/0.6.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 backup_rat-0.6.0 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/reg/backup_rat/0.6.0:/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] 0ba8e972ec4c5a4c522920f6684805f7e79c02b57408a82b5eadcc28ca3ce538
[INFO] running `"docker" "start" "-a" "0ba8e972ec4c5a4c522920f6684805f7e79c02b57408a82b5eadcc28ca3ce538"`
[INFO] [stderr]    Compiling directories v1.0.2
[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:180:21
[INFO] [stderr]     |
[INFO] [stderr] 180 |                     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:228:17
[INFO] [stderr]     |
[INFO] [stderr] 228 |                 remove_dir_all(directory.join(new_min)).is_ok();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.34s
[INFO] running `"docker" "inspect" "0ba8e972ec4c5a4c522920f6684805f7e79c02b57408a82b5eadcc28ca3ce538"`
[INFO] running `"docker" "rm" "-f" "0ba8e972ec4c5a4c522920f6684805f7e79c02b57408a82b5eadcc28ca3ce538"`
[INFO] [stdout] 0ba8e972ec4c5a4c522920f6684805f7e79c02b57408a82b5eadcc28ca3ce538
[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/reg/backup_rat/0.6.0:/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] 13afe6c3fce87be13fe005e92646b85656af23fb0634559d787a0bcc65c5456a
[INFO] running `"docker" "start" "-a" "13afe6c3fce87be13fe005e92646b85656af23fb0634559d787a0bcc65c5456a"`
[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:180:21
[INFO] [stderr]     |
[INFO] [stderr] 180 |                     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:228:17
[INFO] [stderr]     |
[INFO] [stderr] 228 |                 remove_dir_all(directory.join(new_min)).is_ok();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.83s
[INFO] running `"docker" "inspect" "13afe6c3fce87be13fe005e92646b85656af23fb0634559d787a0bcc65c5456a"`
[INFO] running `"docker" "rm" "-f" "13afe6c3fce87be13fe005e92646b85656af23fb0634559d787a0bcc65c5456a"`
[INFO] [stdout] 13afe6c3fce87be13fe005e92646b85656af23fb0634559d787a0bcc65c5456a
[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/reg/backup_rat/0.6.0:/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] ed5b28717c3981e9e3f189b4000e70882d0fd491465bf050411685e808734ad6
[INFO] running `"docker" "start" "-a" "ed5b28717c3981e9e3f189b4000e70882d0fd491465bf050411685e808734ad6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/backup_rat-a201925a716869f1
[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" "ed5b28717c3981e9e3f189b4000e70882d0fd491465bf050411685e808734ad6"`
[INFO] running `"docker" "rm" "-f" "ed5b28717c3981e9e3f189b4000e70882d0fd491465bf050411685e808734ad6"`
[INFO] [stdout] ed5b28717c3981e9e3f189b4000e70882d0fd491465bf050411685e808734ad6