[INFO] updating cached repository benbrunton/rust_minesweeper
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/benbrunton/rust_minesweeper
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/benbrunton/rust_minesweeper" "work/ex/beta-1.38-1/sources/1.37.0/gh/benbrunton/rust_minesweeper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/benbrunton/rust_minesweeper'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/benbrunton/rust_minesweeper" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/benbrunton/rust_minesweeper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/benbrunton/rust_minesweeper'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7bbc1df016dc749c4e6b7dd1875cc00bca45d9b0
[INFO] sha for GitHub repo benbrunton/rust_minesweeper: 7bbc1df016dc749c4e6b7dd1875cc00bca45d9b0
[INFO] validating manifest of benbrunton/rust_minesweeper 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 benbrunton/rust_minesweeper 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 benbrunton/rust_minesweeper
[INFO] finished frobbing benbrunton/rust_minesweeper
[INFO] frobbed toml for benbrunton/rust_minesweeper written to work/ex/beta-1.38-1/sources/1.37.0/gh/benbrunton/rust_minesweeper/Cargo.toml
[INFO] started frobbing benbrunton/rust_minesweeper
[INFO] finished frobbing benbrunton/rust_minesweeper
[INFO] frobbed toml for benbrunton/rust_minesweeper written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/benbrunton/rust_minesweeper/Cargo.toml
[INFO] crate benbrunton/rust_minesweeper 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 benbrunton/rust_minesweeper 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/benbrunton/rust_minesweeper:/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] 137d577bd0954868edb52eb5703b2035dbdc6e2bc855bf35be439cef533b9a49
[INFO] running `"docker" "start" "-a" "137d577bd0954868edb52eb5703b2035dbdc6e2bc855bf35be439cef533b9a49"`
[INFO] [stderr]    Compiling libc v0.2.9
[INFO] [stderr]    Compiling mempool v0.3.1
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling aho-corasick v0.5.1
[INFO] [stderr]    Compiling regex v0.1.65
[INFO] [stderr]    Compiling rust-mines v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.28s
[INFO] running `"docker" "inspect" "137d577bd0954868edb52eb5703b2035dbdc6e2bc855bf35be439cef533b9a49"`
[INFO] running `"docker" "rm" "-f" "137d577bd0954868edb52eb5703b2035dbdc6e2bc855bf35be439cef533b9a49"`
[INFO] [stdout] 137d577bd0954868edb52eb5703b2035dbdc6e2bc855bf35be439cef533b9a49
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/benbrunton/rust_minesweeper:/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] 54a337d242223dd1e9dbd1b5d5eed88c4cd751097bafabe2ea60ddb03dd02116
[INFO] running `"docker" "start" "-a" "54a337d242223dd1e9dbd1b5d5eed88c4cd751097bafabe2ea60ddb03dd02116"`
[INFO] [stderr]    Compiling rust-mines v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "54a337d242223dd1e9dbd1b5d5eed88c4cd751097bafabe2ea60ddb03dd02116"`
[INFO] running `"docker" "rm" "-f" "54a337d242223dd1e9dbd1b5d5eed88c4cd751097bafabe2ea60ddb03dd02116"`
[INFO] [stdout] 54a337d242223dd1e9dbd1b5d5eed88c4cd751097bafabe2ea60ddb03dd02116
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/benbrunton/rust_minesweeper:/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] ec16c941aee22147a81c0974daac943d7978dba6e85ca6a1031ae0e0f1fbf0ee
[INFO] running `"docker" "start" "-a" "ec16c941aee22147a81c0974daac943d7978dba6e85ca6a1031ae0e0f1fbf0ee"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_mines-a748234d9587a81d
[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" "ec16c941aee22147a81c0974daac943d7978dba6e85ca6a1031ae0e0f1fbf0ee"`
[INFO] running `"docker" "rm" "-f" "ec16c941aee22147a81c0974daac943d7978dba6e85ca6a1031ae0e0f1fbf0ee"`
[INFO] [stdout] ec16c941aee22147a81c0974daac943d7978dba6e85ca6a1031ae0e0f1fbf0ee