[INFO] updating cached repository Velfi/failure-fern-example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Velfi/failure-fern-example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Velfi/failure-fern-example" "work/ex/beta-1.38-1/sources/1.37.0/gh/Velfi/failure-fern-example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Velfi/failure-fern-example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Velfi/failure-fern-example" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Velfi/failure-fern-example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Velfi/failure-fern-example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4178a1418c6ca75b0c6b00876303d84233ee0811
[INFO] sha for GitHub repo Velfi/failure-fern-example: 4178a1418c6ca75b0c6b00876303d84233ee0811
[INFO] validating manifest of Velfi/failure-fern-example 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 Velfi/failure-fern-example 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 Velfi/failure-fern-example
[INFO] finished frobbing Velfi/failure-fern-example
[INFO] frobbed toml for Velfi/failure-fern-example written to work/ex/beta-1.38-1/sources/1.37.0/gh/Velfi/failure-fern-example/Cargo.toml
[INFO] started frobbing Velfi/failure-fern-example
[INFO] finished frobbing Velfi/failure-fern-example
[INFO] frobbed toml for Velfi/failure-fern-example written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Velfi/failure-fern-example/Cargo.toml
[INFO] crate Velfi/failure-fern-example 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Velfi/failure-fern-example against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Velfi/failure-fern-example:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 5c720ab31ec65271c40933558cffb49a747ffca8e8ea395ec68f2d3c9bba46fe
[INFO] running `"docker" "start" "-a" "5c720ab31ec65271c40933558cffb49a747ffca8e8ea395ec68f2d3c9bba46fe"`
[INFO] [stderr]    Compiling cc v1.0.6
[INFO] [stderr]    Compiling rustc-demangle v0.1.7
[INFO] [stderr]    Compiling time v0.1.39
[INFO] [stderr]    Compiling colored v1.6.0
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling fern v0.5.4
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling failure-learn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.88s
[INFO] running `"docker" "inspect" "5c720ab31ec65271c40933558cffb49a747ffca8e8ea395ec68f2d3c9bba46fe"`
[INFO] running `"docker" "rm" "-f" "5c720ab31ec65271c40933558cffb49a747ffca8e8ea395ec68f2d3c9bba46fe"`
[INFO] [stdout] 5c720ab31ec65271c40933558cffb49a747ffca8e8ea395ec68f2d3c9bba46fe
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Velfi/failure-fern-example:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] db21d9fe2f4bed7c4b95c0e2965bee9e0f098c7e575ac77a4c3e64b55587b745
[INFO] running `"docker" "start" "-a" "db21d9fe2f4bed7c4b95c0e2965bee9e0f098c7e575ac77a4c3e64b55587b745"`
[INFO] [stderr]    Compiling failure-learn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `"docker" "inspect" "db21d9fe2f4bed7c4b95c0e2965bee9e0f098c7e575ac77a4c3e64b55587b745"`
[INFO] running `"docker" "rm" "-f" "db21d9fe2f4bed7c4b95c0e2965bee9e0f098c7e575ac77a4c3e64b55587b745"`
[INFO] [stdout] db21d9fe2f4bed7c4b95c0e2965bee9e0f098c7e575ac77a4c3e64b55587b745
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Velfi/failure-fern-example:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 41aecbb38828bcf8c9080d8688e7f9406d5caf629542d77ff46daf897d9d83c3
[INFO] running `"docker" "start" "-a" "41aecbb38828bcf8c9080d8688e7f9406d5caf629542d77ff46daf897d9d83c3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/failure_learn-c08111b76f173bd4
[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" "41aecbb38828bcf8c9080d8688e7f9406d5caf629542d77ff46daf897d9d83c3"`
[INFO] running `"docker" "rm" "-f" "41aecbb38828bcf8c9080d8688e7f9406d5caf629542d77ff46daf897d9d83c3"`
[INFO] [stdout] 41aecbb38828bcf8c9080d8688e7f9406d5caf629542d77ff46daf897d9d83c3