[INFO] updating cached repository howeih/Day-49-Ford-Fulkerson
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/howeih/Day-49-Ford-Fulkerson
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/howeih/Day-49-Ford-Fulkerson" "work/ex/beta-1.38-1/sources/1.37.0/gh/howeih/Day-49-Ford-Fulkerson"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/howeih/Day-49-Ford-Fulkerson'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/howeih/Day-49-Ford-Fulkerson" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/howeih/Day-49-Ford-Fulkerson"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/howeih/Day-49-Ford-Fulkerson'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f1af4a87034f7bf9cff697782695ca76ea954b08
[INFO] sha for GitHub repo howeih/Day-49-Ford-Fulkerson: f1af4a87034f7bf9cff697782695ca76ea954b08
[INFO] validating manifest of howeih/Day-49-Ford-Fulkerson 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 howeih/Day-49-Ford-Fulkerson 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 howeih/Day-49-Ford-Fulkerson
[INFO] finished frobbing howeih/Day-49-Ford-Fulkerson
[INFO] frobbed toml for howeih/Day-49-Ford-Fulkerson written to work/ex/beta-1.38-1/sources/1.37.0/gh/howeih/Day-49-Ford-Fulkerson/Cargo.toml
[INFO] started frobbing howeih/Day-49-Ford-Fulkerson
[INFO] finished frobbing howeih/Day-49-Ford-Fulkerson
[INFO] frobbed toml for howeih/Day-49-Ford-Fulkerson written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/howeih/Day-49-Ford-Fulkerson/Cargo.toml
[INFO] crate howeih/Day-49-Ford-Fulkerson 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 howeih/Day-49-Ford-Fulkerson 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-4/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/howeih/Day-49-Ford-Fulkerson:/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] 99803700e0f8bab00825850d07b0bb4b38de848426a3f97a0df26a2840d965eb
[INFO] running `"docker" "start" "-a" "99803700e0f8bab00825850d07b0bb4b38de848426a3f97a0df26a2840d965eb"`
[INFO] [stderr]    Compiling ford_fulkerson v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `"docker" "inspect" "99803700e0f8bab00825850d07b0bb4b38de848426a3f97a0df26a2840d965eb"`
[INFO] running `"docker" "rm" "-f" "99803700e0f8bab00825850d07b0bb4b38de848426a3f97a0df26a2840d965eb"`
[INFO] [stdout] 99803700e0f8bab00825850d07b0bb4b38de848426a3f97a0df26a2840d965eb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/howeih/Day-49-Ford-Fulkerson:/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] 4d68ba6e2def0029068f0c63b6bc1046656e4ee3f329b12c6e3a1ebe3287e587
[INFO] running `"docker" "start" "-a" "4d68ba6e2def0029068f0c63b6bc1046656e4ee3f329b12c6e3a1ebe3287e587"`
[INFO] [stderr]    Compiling ford_fulkerson v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `"docker" "inspect" "4d68ba6e2def0029068f0c63b6bc1046656e4ee3f329b12c6e3a1ebe3287e587"`
[INFO] running `"docker" "rm" "-f" "4d68ba6e2def0029068f0c63b6bc1046656e4ee3f329b12c6e3a1ebe3287e587"`
[INFO] [stdout] 4d68ba6e2def0029068f0c63b6bc1046656e4ee3f329b12c6e3a1ebe3287e587
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/howeih/Day-49-Ford-Fulkerson:/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] d5e2c0d1a6b1d3fe95cf8b48283eb07469c2ac6eb8dedb20b2849195592f26bf
[INFO] running `"docker" "start" "-a" "d5e2c0d1a6b1d3fe95cf8b48283eb07469c2ac6eb8dedb20b2849195592f26bf"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ford_fulkerson-d4e7b5b92cbe8161
[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" "d5e2c0d1a6b1d3fe95cf8b48283eb07469c2ac6eb8dedb20b2849195592f26bf"`
[INFO] running `"docker" "rm" "-f" "d5e2c0d1a6b1d3fe95cf8b48283eb07469c2ac6eb8dedb20b2849195592f26bf"`
[INFO] [stdout] d5e2c0d1a6b1d3fe95cf8b48283eb07469c2ac6eb8dedb20b2849195592f26bf