[INFO] updating cached repository kooparse/coding_problems
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kooparse/coding_problems
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kooparse/coding_problems" "work/ex/beta-1.38-1/sources/1.37.0/gh/kooparse/coding_problems"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kooparse/coding_problems'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kooparse/coding_problems" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kooparse/coding_problems"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kooparse/coding_problems'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 19401df9cd92fec15231b368cd08e7473595ffd0
[INFO] sha for GitHub repo kooparse/coding_problems: 19401df9cd92fec15231b368cd08e7473595ffd0
[INFO] validating manifest of kooparse/coding_problems 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 kooparse/coding_problems 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 kooparse/coding_problems
[INFO] finished frobbing kooparse/coding_problems
[INFO] frobbed toml for kooparse/coding_problems written to work/ex/beta-1.38-1/sources/1.37.0/gh/kooparse/coding_problems/Cargo.toml
[INFO] started frobbing kooparse/coding_problems
[INFO] finished frobbing kooparse/coding_problems
[INFO] frobbed toml for kooparse/coding_problems written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kooparse/coding_problems/Cargo.toml
[INFO] crate kooparse/coding_problems 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 kooparse/coding_problems 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-7/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/kooparse/coding_problems:/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] 638c7816f0a65c99e3d14b3769500675db0bce32ae2abc6942a6a29642e946dd
[INFO] running `"docker" "start" "-a" "638c7816f0a65c99e3d14b3769500675db0bce32ae2abc6942a6a29642e946dd"`
[INFO] [stderr]    Compiling coding_interview v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "638c7816f0a65c99e3d14b3769500675db0bce32ae2abc6942a6a29642e946dd"`
[INFO] running `"docker" "rm" "-f" "638c7816f0a65c99e3d14b3769500675db0bce32ae2abc6942a6a29642e946dd"`
[INFO] [stdout] 638c7816f0a65c99e3d14b3769500675db0bce32ae2abc6942a6a29642e946dd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/kooparse/coding_problems:/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] fc1a1c125414282eec692584df34580b406103804a2a58742990e4b2518ef5f5
[INFO] running `"docker" "start" "-a" "fc1a1c125414282eec692584df34580b406103804a2a58742990e4b2518ef5f5"`
[INFO] [stderr]    Compiling coding_interview v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "fc1a1c125414282eec692584df34580b406103804a2a58742990e4b2518ef5f5"`
[INFO] running `"docker" "rm" "-f" "fc1a1c125414282eec692584df34580b406103804a2a58742990e4b2518ef5f5"`
[INFO] [stdout] fc1a1c125414282eec692584df34580b406103804a2a58742990e4b2518ef5f5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/kooparse/coding_problems:/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] 4df20e05b14d459397144159b9ae4abdc150110e1e815962b7deae84f45d264b
[INFO] running `"docker" "start" "-a" "4df20e05b14d459397144159b9ae4abdc150110e1e815962b7deae84f45d264b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/coding_interview-b65e2acf8d4e671c
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test google_serializer::tests::serializer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests coding_interview
[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" "4df20e05b14d459397144159b9ae4abdc150110e1e815962b7deae84f45d264b"`
[INFO] running `"docker" "rm" "-f" "4df20e05b14d459397144159b9ae4abdc150110e1e815962b7deae84f45d264b"`
[INFO] [stdout] 4df20e05b14d459397144159b9ae4abdc150110e1e815962b7deae84f45d264b