[INFO] updating cached repository casperin/ascii_compressor
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/casperin/ascii_compressor
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/casperin/ascii_compressor" "work/ex/beta-1.38-1/sources/1.37.0/gh/casperin/ascii_compressor"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/casperin/ascii_compressor'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/casperin/ascii_compressor" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/casperin/ascii_compressor"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/casperin/ascii_compressor'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7ffd0d0e5f9c41ca972dc7521b68b183f589b8c5
[INFO] sha for GitHub repo casperin/ascii_compressor: 7ffd0d0e5f9c41ca972dc7521b68b183f589b8c5
[INFO] validating manifest of casperin/ascii_compressor on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of casperin/ascii_compressor on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing casperin/ascii_compressor
[INFO] finished frobbing casperin/ascii_compressor
[INFO] frobbed toml for casperin/ascii_compressor written to work/ex/beta-1.38-1/sources/1.37.0/gh/casperin/ascii_compressor/Cargo.toml
[INFO] started frobbing casperin/ascii_compressor
[INFO] finished frobbing casperin/ascii_compressor
[INFO] frobbed toml for casperin/ascii_compressor written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/casperin/ascii_compressor/Cargo.toml
[INFO] crate casperin/ascii_compressor already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing casperin/ascii_compressor against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/casperin/ascii_compressor:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 3df3362c48beae24d1e5f7e46bea99fe5aeb98432dd4c328aa9acb6cce554238
[INFO] running `"docker" "start" "-a" "3df3362c48beae24d1e5f7e46bea99fe5aeb98432dd4c328aa9acb6cce554238"`
[INFO] [stderr]    Compiling ascii_compressor v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `"docker" "inspect" "3df3362c48beae24d1e5f7e46bea99fe5aeb98432dd4c328aa9acb6cce554238"`
[INFO] running `"docker" "rm" "-f" "3df3362c48beae24d1e5f7e46bea99fe5aeb98432dd4c328aa9acb6cce554238"`
[INFO] [stdout] 3df3362c48beae24d1e5f7e46bea99fe5aeb98432dd4c328aa9acb6cce554238
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/casperin/ascii_compressor:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 64d6810e9235d40e9e9ad00251dd9c9d10124f2dae97eeea9e5207d20e9c3ecd
[INFO] running `"docker" "start" "-a" "64d6810e9235d40e9e9ad00251dd9c9d10124f2dae97eeea9e5207d20e9c3ecd"`
[INFO] [stderr]    Compiling ascii_compressor v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `"docker" "inspect" "64d6810e9235d40e9e9ad00251dd9c9d10124f2dae97eeea9e5207d20e9c3ecd"`
[INFO] running `"docker" "rm" "-f" "64d6810e9235d40e9e9ad00251dd9c9d10124f2dae97eeea9e5207d20e9c3ecd"`
[INFO] [stdout] 64d6810e9235d40e9e9ad00251dd9c9d10124f2dae97eeea9e5207d20e9c3ecd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/casperin/ascii_compressor:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 64a1f2bf4ae9ff9bf434589021d1b222959106c5e33fb8106900c77dce2f18d9
[INFO] running `"docker" "start" "-a" "64a1f2bf4ae9ff9bf434589021d1b222959106c5e33fb8106900c77dce2f18d9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ascii_compressor-36c4a1ff69239792
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::shrink_7 ... ok
[INFO] [stdout] test tests::shrink_simple ... ok
[INFO] [stdout] test tests::shrink_9 ... ok
[INFO] [stdout] test tests::shrink_grow_various_strings ... ok
[INFO] [stdout] test tests::shrink_8 ... ok
[INFO] [stdout] test tests::shrink_panics ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ascii_compressor-bd1036019e273f13
[INFO] [stderr]    Doc-tests ascii_compressor
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "64a1f2bf4ae9ff9bf434589021d1b222959106c5e33fb8106900c77dce2f18d9"`
[INFO] running `"docker" "rm" "-f" "64a1f2bf4ae9ff9bf434589021d1b222959106c5e33fb8106900c77dce2f18d9"`
[INFO] [stdout] 64a1f2bf4ae9ff9bf434589021d1b222959106c5e33fb8106900c77dce2f18d9