[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-1.37-6/sources/1.36.0/gh/plumenator/failure-learn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/plumenator/failure-learn'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/plumenator/failure-learn" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/plumenator/failure-learn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of plumenator/failure-learn 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 plumenator/failure-learn
[INFO] finished frobbing plumenator/failure-learn
[INFO] frobbed toml for plumenator/failure-learn written to work/ex/beta-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/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" "+1.36.0" "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 plumenator/failure-learn against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] f0d4eadf667b5888656e0865cac8b13824b14f9436c655e7f1d7c9f91f2079b5
[INFO] running `"docker" "start" "-a" "f0d4eadf667b5888656e0865cac8b13824b14f9436c655e7f1d7c9f91f2079b5"`
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling failure v0.1.1
[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 4.64s
[INFO] running `"docker" "inspect" "f0d4eadf667b5888656e0865cac8b13824b14f9436c655e7f1d7c9f91f2079b5"`
[INFO] running `"docker" "rm" "-f" "f0d4eadf667b5888656e0865cac8b13824b14f9436c655e7f1d7c9f91f2079b5"`
[INFO] [stdout] f0d4eadf667b5888656e0865cac8b13824b14f9436c655e7f1d7c9f91f2079b5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 22c40af9f834518d50bca317ff557ad52ddb08d8fe1d4e45708bb1dbfd31f5e5
[INFO] running `"docker" "start" "-a" "22c40af9f834518d50bca317ff557ad52ddb08d8fe1d4e45708bb1dbfd31f5e5"`
[INFO] [stderr]    Compiling failure-learn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `"docker" "inspect" "22c40af9f834518d50bca317ff557ad52ddb08d8fe1d4e45708bb1dbfd31f5e5"`
[INFO] running `"docker" "rm" "-f" "22c40af9f834518d50bca317ff557ad52ddb08d8fe1d4e45708bb1dbfd31f5e5"`
[INFO] [stdout] 22c40af9f834518d50bca317ff557ad52ddb08d8fe1d4e45708bb1dbfd31f5e5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] e8fc2b7df7d0c77d69e94f7d89ef776c66cc09e250e37806e2bb8ff037d7bdb8
[INFO] running `"docker" "start" "-a" "e8fc2b7df7d0c77d69e94f7d89ef776c66cc09e250e37806e2bb8ff037d7bdb8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/failure_learn-e319292defa0c928
[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" "e8fc2b7df7d0c77d69e94f7d89ef776c66cc09e250e37806e2bb8ff037d7bdb8"`
[INFO] running `"docker" "rm" "-f" "e8fc2b7df7d0c77d69e94f7d89ef776c66cc09e250e37806e2bb8ff037d7bdb8"`
[INFO] [stdout] e8fc2b7df7d0c77d69e94f7d89ef776c66cc09e250e37806e2bb8ff037d7bdb8