[INFO] updating cached repository mandober/rust-maybe-type
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mandober/rust-maybe-type
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mandober/rust-maybe-type" "work/ex/beta-1.38-1/sources/1.37.0/gh/mandober/rust-maybe-type"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mandober/rust-maybe-type'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mandober/rust-maybe-type" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mandober/rust-maybe-type"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mandober/rust-maybe-type'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4a30396b6d4105cda4807018011c782afe17ebbd
[INFO] sha for GitHub repo mandober/rust-maybe-type: 4a30396b6d4105cda4807018011c782afe17ebbd
[INFO] validating manifest of mandober/rust-maybe-type 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 mandober/rust-maybe-type 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 mandober/rust-maybe-type
[INFO] finished frobbing mandober/rust-maybe-type
[INFO] frobbed toml for mandober/rust-maybe-type written to work/ex/beta-1.38-1/sources/1.37.0/gh/mandober/rust-maybe-type/Cargo.toml
[INFO] started frobbing mandober/rust-maybe-type
[INFO] finished frobbing mandober/rust-maybe-type
[INFO] frobbed toml for mandober/rust-maybe-type written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mandober/rust-maybe-type/Cargo.toml
[INFO] crate mandober/rust-maybe-type 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 mandober/rust-maybe-type 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-1/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/mandober/rust-maybe-type:/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] 272e90f9f0df5a9f7c62daab4890d7397315fbb13471b983a377edde5a9cc5d8
[INFO] running `"docker" "start" "-a" "272e90f9f0df5a9f7c62daab4890d7397315fbb13471b983a377edde5a9cc5d8"`
[INFO] [stderr]    Compiling maybe v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "272e90f9f0df5a9f7c62daab4890d7397315fbb13471b983a377edde5a9cc5d8"`
[INFO] running `"docker" "rm" "-f" "272e90f9f0df5a9f7c62daab4890d7397315fbb13471b983a377edde5a9cc5d8"`
[INFO] [stdout] 272e90f9f0df5a9f7c62daab4890d7397315fbb13471b983a377edde5a9cc5d8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/mandober/rust-maybe-type:/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] f8282487f1d05b45461351a60cabc024f2eab3b2a1c3bf64b63f2c8de8b6e542
[INFO] running `"docker" "start" "-a" "f8282487f1d05b45461351a60cabc024f2eab3b2a1c3bf64b63f2c8de8b6e542"`
[INFO] [stderr]    Compiling maybe v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.65s
[INFO] running `"docker" "inspect" "f8282487f1d05b45461351a60cabc024f2eab3b2a1c3bf64b63f2c8de8b6e542"`
[INFO] running `"docker" "rm" "-f" "f8282487f1d05b45461351a60cabc024f2eab3b2a1c3bf64b63f2c8de8b6e542"`
[INFO] [stdout] f8282487f1d05b45461351a60cabc024f2eab3b2a1c3bf64b63f2c8de8b6e542
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/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/mandober/rust-maybe-type:/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] 9a6d24d7e6aa67fec79ca077e28627fe08fc7513dad4a102f3add77319198095
[INFO] running `"docker" "start" "-a" "9a6d24d7e6aa67fec79ca077e28627fe08fc7513dad4a102f3add77319198095"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/maybe-9a349998face3ac7
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test maybe::test::cloned ... ok
[INFO] [stdout] test maybe::test::fuzzy ... ok
[INFO] [stdout] test maybe::test::get_or_insert ... ok
[INFO] [stdout] test maybe::test::inner ... ok
[INFO] [stdout] test maybe::test::taken ... ok
[INFO] [stdout] test maybe::test::maps ... ok
[INFO] [stdout] test maybe::test::is_just_or_nothing ... ok
[INFO] [stdout] test maybe::test::iter ... ok
[INFO] [stdout] test maybe::test::unwrap_or ... ok
[INFO] [stdout] test maybe::test::as_mut ... ok
[INFO] [stdout] test maybe::test::as_ref ... ok
[INFO] [stdout] test maybe::test::and_then ... ok
[INFO] [stdout] test maybe::test::unwrap_or_default ... ok
[INFO] [stdout] test maybe::test::unwrap_or_else ... ok
[INFO] [stdout] test maybe::test::and ... ok
[INFO] [stdout] test maybe::test::unwrap_fails ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "9a6d24d7e6aa67fec79ca077e28627fe08fc7513dad4a102f3add77319198095"`
[INFO] running `"docker" "rm" "-f" "9a6d24d7e6aa67fec79ca077e28627fe08fc7513dad4a102f3add77319198095"`
[INFO] [stdout] 9a6d24d7e6aa67fec79ca077e28627fe08fc7513dad4a102f3add77319198095