[INFO] updating cached repository plumenator/failure-learn
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/plumenator/failure-learn
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/plumenator/failure-learn" "work/ex/beta-1.38-1/sources/1.37.0/gh/plumenator/failure-learn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/plumenator/failure-learn'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/plumenator/failure-learn" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/plumenator/failure-learn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/plumenator/failure-learn'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] aa2196d9aa6e6ddda13d8e78c2b56925ff46c641
[INFO] sha for GitHub repo plumenator/failure-learn: aa2196d9aa6e6ddda13d8e78c2b56925ff46c641
[INFO] validating manifest of plumenator/failure-learn 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 plumenator/failure-learn 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 plumenator/failure-learn
[INFO] finished frobbing plumenator/failure-learn
[INFO] frobbed toml for plumenator/failure-learn written to work/ex/beta-1.38-1/sources/1.37.0/gh/plumenator/failure-learn/Cargo.toml
[INFO] started frobbing plumenator/failure-learn
[INFO] finished frobbing plumenator/failure-learn
[INFO] frobbed toml for plumenator/failure-learn written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/plumenator/failure-learn/Cargo.toml
[INFO] crate plumenator/failure-learn 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 plumenator/failure-learn 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-6/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/plumenator/failure-learn:/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] 440ce07c79f0fc530311c5653df9f40dbb07f06bd713a2fed6f1553965ebe84b
[INFO] running `"docker" "start" "-a" "440ce07c79f0fc530311c5653df9f40dbb07f06bd713a2fed6f1553965ebe84b"`
[INFO] [stderr]    Compiling toml v0.4.5
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]    Compiling failure-learn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[macro_use] extern crate matches;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.47s
[INFO] running `"docker" "inspect" "440ce07c79f0fc530311c5653df9f40dbb07f06bd713a2fed6f1553965ebe84b"`
[INFO] running `"docker" "rm" "-f" "440ce07c79f0fc530311c5653df9f40dbb07f06bd713a2fed6f1553965ebe84b"`
[INFO] [stdout] 440ce07c79f0fc530311c5653df9f40dbb07f06bd713a2fed6f1553965ebe84b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/plumenator/failure-learn:/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] 3e152b21570f1cbb4403c1a23df72937dce834e4126a85b39669997ccfeab6fd
[INFO] running `"docker" "start" "-a" "3e152b21570f1cbb4403c1a23df72937dce834e4126a85b39669997ccfeab6fd"`
[INFO] [stderr]    Compiling failure-learn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `"docker" "inspect" "3e152b21570f1cbb4403c1a23df72937dce834e4126a85b39669997ccfeab6fd"`
[INFO] running `"docker" "rm" "-f" "3e152b21570f1cbb4403c1a23df72937dce834e4126a85b39669997ccfeab6fd"`
[INFO] [stdout] 3e152b21570f1cbb4403c1a23df72937dce834e4126a85b39669997ccfeab6fd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/plumenator/failure-learn:/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] 1730c18dcfc5043f19e25b8ac3fe64ab048896e578928bb867c1286daaae5e39
[INFO] running `"docker" "start" "-a" "1730c18dcfc5043f19e25b8ac3fe64ab048896e578928bb867c1286daaae5e39"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/failure_learn-f838eb03eedfe1e8
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test invalid_toml ... ok
[INFO] [stdout] test invalid_path ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1730c18dcfc5043f19e25b8ac3fe64ab048896e578928bb867c1286daaae5e39"`
[INFO] running `"docker" "rm" "-f" "1730c18dcfc5043f19e25b8ac3fe64ab048896e578928bb867c1286daaae5e39"`
[INFO] [stdout] 1730c18dcfc5043f19e25b8ac3fe64ab048896e578928bb867c1286daaae5e39