[INFO] updating cached repository YZY74224/learning_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/YZY74224/learning_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/YZY74224/learning_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/YZY74224/learning_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/YZY74224/learning_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/YZY74224/learning_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/YZY74224/learning_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/YZY74224/learning_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d8ebf5311954bee4972dd9abb67d48073a42576a
[INFO] sha for GitHub repo YZY74224/learning_rust: d8ebf5311954bee4972dd9abb67d48073a42576a
[INFO] validating manifest of YZY74224/learning_rust 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 YZY74224/learning_rust 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 YZY74224/learning_rust
[INFO] finished frobbing YZY74224/learning_rust
[INFO] frobbed toml for YZY74224/learning_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/YZY74224/learning_rust/Cargo.toml
[INFO] started frobbing YZY74224/learning_rust
[INFO] finished frobbing YZY74224/learning_rust
[INFO] frobbed toml for YZY74224/learning_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/YZY74224/learning_rust/Cargo.toml
[INFO] crate YZY74224/learning_rust 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 YZY74224/learning_rust 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/YZY74224/learning_rust:/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] 757e4107c0f53ab712691752489d91392ea77d02cfaa3cfe0e2d28ebfefc3b72
[INFO] running `"docker" "start" "-a" "757e4107c0f53ab712691752489d91392ea77d02cfaa3cfe0e2d28ebfefc3b72"`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "757e4107c0f53ab712691752489d91392ea77d02cfaa3cfe0e2d28ebfefc3b72"`
[INFO] running `"docker" "rm" "-f" "757e4107c0f53ab712691752489d91392ea77d02cfaa3cfe0e2d28ebfefc3b72"`
[INFO] [stdout] 757e4107c0f53ab712691752489d91392ea77d02cfaa3cfe0e2d28ebfefc3b72
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/YZY74224/learning_rust:/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] 55b66d2c55f369c697899f67a8a9b9f2ac42d1beef6a70edb11b64b55433cbf6
[INFO] running `"docker" "start" "-a" "55b66d2c55f369c697899f67a8a9b9f2ac42d1beef6a70edb11b64b55433cbf6"`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "55b66d2c55f369c697899f67a8a9b9f2ac42d1beef6a70edb11b64b55433cbf6"`
[INFO] running `"docker" "rm" "-f" "55b66d2c55f369c697899f67a8a9b9f2ac42d1beef6a70edb11b64b55433cbf6"`
[INFO] [stdout] 55b66d2c55f369c697899f67a8a9b9f2ac42d1beef6a70edb11b64b55433cbf6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/YZY74224/learning_rust:/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] c97d57ede5774b29750dabca4ae4adcf7bf0d6364cbf29820eb94483ad78872c
[INFO] running `"docker" "start" "-a" "c97d57ede5774b29750dabca4ae4adcf7bf0d6364cbf29820eb94483ad78872c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/learning_rust-2c51c21a758dc022
[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" "c97d57ede5774b29750dabca4ae4adcf7bf0d6364cbf29820eb94483ad78872c"`
[INFO] running `"docker" "rm" "-f" "c97d57ede5774b29750dabca4ae4adcf7bf0d6364cbf29820eb94483ad78872c"`
[INFO] [stdout] c97d57ede5774b29750dabca4ae4adcf7bf0d6364cbf29820eb94483ad78872c