[INFO] updating cached repository niketkumar/combinations_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/niketkumar/combinations_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/niketkumar/combinations_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/niketkumar/combinations_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/niketkumar/combinations_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/niketkumar/combinations_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/niketkumar/combinations_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/niketkumar/combinations_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 45dab151a5128bc8b47f7b178dcd0a44eef264e6
[INFO] sha for GitHub repo niketkumar/combinations_rust: 45dab151a5128bc8b47f7b178dcd0a44eef264e6
[INFO] validating manifest of niketkumar/combinations_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 niketkumar/combinations_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 niketkumar/combinations_rust
[INFO] finished frobbing niketkumar/combinations_rust
[INFO] frobbed toml for niketkumar/combinations_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/niketkumar/combinations_rust/Cargo.toml
[INFO] started frobbing niketkumar/combinations_rust
[INFO] finished frobbing niketkumar/combinations_rust
[INFO] frobbed toml for niketkumar/combinations_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/niketkumar/combinations_rust/Cargo.toml
[INFO] crate niketkumar/combinations_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 niketkumar/combinations_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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/niketkumar/combinations_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] 15388b2b9c4b34c8b182eecfeaec59c14a250e2ac479e8394e6f80c5d69c2673
[INFO] running `"docker" "start" "-a" "15388b2b9c4b34c8b182eecfeaec59c14a250e2ac479e8394e6f80c5d69c2673"`
[INFO] [stderr]    Compiling combinations v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "15388b2b9c4b34c8b182eecfeaec59c14a250e2ac479e8394e6f80c5d69c2673"`
[INFO] running `"docker" "rm" "-f" "15388b2b9c4b34c8b182eecfeaec59c14a250e2ac479e8394e6f80c5d69c2673"`
[INFO] [stdout] 15388b2b9c4b34c8b182eecfeaec59c14a250e2ac479e8394e6f80c5d69c2673
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/niketkumar/combinations_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] 1c697f62cee61b92451d7b7a2ec1b5f72769f94a0ad97bfebb0b3950210e05e3
[INFO] running `"docker" "start" "-a" "1c697f62cee61b92451d7b7a2ec1b5f72769f94a0ad97bfebb0b3950210e05e3"`
[INFO] [stderr]    Compiling combinations v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "1c697f62cee61b92451d7b7a2ec1b5f72769f94a0ad97bfebb0b3950210e05e3"`
[INFO] running `"docker" "rm" "-f" "1c697f62cee61b92451d7b7a2ec1b5f72769f94a0ad97bfebb0b3950210e05e3"`
[INFO] [stdout] 1c697f62cee61b92451d7b7a2ec1b5f72769f94a0ad97bfebb0b3950210e05e3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/niketkumar/combinations_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] 4362115faf5d62cec25d63b6ccdead23bc8afc3fda8b3c41ebe32536808162bd
[INFO] running `"docker" "start" "-a" "4362115faf5d62cec25d63b6ccdead23bc8afc3fda8b3c41ebe32536808162bd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/combinations-e1def8fd9082e76f
[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" "4362115faf5d62cec25d63b6ccdead23bc8afc3fda8b3c41ebe32536808162bd"`
[INFO] running `"docker" "rm" "-f" "4362115faf5d62cec25d63b6ccdead23bc8afc3fda8b3c41ebe32536808162bd"`
[INFO] [stdout] 4362115faf5d62cec25d63b6ccdead23bc8afc3fda8b3c41ebe32536808162bd