[INFO] updating cached repository srenevey/minesweeper
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/srenevey/minesweeper
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/srenevey/minesweeper" "work/ex/beta-1.38-1/sources/1.37.0/gh/srenevey/minesweeper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/srenevey/minesweeper'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/srenevey/minesweeper" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/srenevey/minesweeper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/srenevey/minesweeper'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f5248b08d696158690e0d212afe3b5cda94d0035
[INFO] sha for GitHub repo srenevey/minesweeper: f5248b08d696158690e0d212afe3b5cda94d0035
[INFO] validating manifest of srenevey/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 srenevey/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 srenevey/minesweeper
[INFO] finished frobbing srenevey/minesweeper
[INFO] frobbed toml for srenevey/minesweeper written to work/ex/beta-1.38-1/sources/1.37.0/gh/srenevey/minesweeper/Cargo.toml
[INFO] started frobbing srenevey/minesweeper
[INFO] finished frobbing srenevey/minesweeper
[INFO] frobbed toml for srenevey/minesweeper written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/srenevey/minesweeper/Cargo.toml
[INFO] crate srenevey/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 srenevey/minesweeper 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-6/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/srenevey/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] da0aedb3b1cd2907beb8cb6d61bede1d6f4f5f29c5441bb9cbb4b6fefbd1ca7b
[INFO] running `"docker" "start" "-a" "da0aedb3b1cd2907beb8cb6d61bede1d6f4f5f29c5441bb9cbb4b6fefbd1ca7b"`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.47
[INFO] [stderr]    Compiling bumpalo v2.4.3
[INFO] [stderr]    Compiling wasm-bindgen v0.2.47
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.47
[INFO] [stderr]    Compiling serde_derive v1.0.94
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.47
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.47
[INFO] [stderr]    Compiling minesweeper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.65s
[INFO] running `"docker" "inspect" "da0aedb3b1cd2907beb8cb6d61bede1d6f4f5f29c5441bb9cbb4b6fefbd1ca7b"`
[INFO] running `"docker" "rm" "-f" "da0aedb3b1cd2907beb8cb6d61bede1d6f4f5f29c5441bb9cbb4b6fefbd1ca7b"`
[INFO] [stdout] da0aedb3b1cd2907beb8cb6d61bede1d6f4f5f29c5441bb9cbb4b6fefbd1ca7b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/srenevey/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1575cffb6fc7abd69635c5649b290902b2dbdc9844dd30877eaeba74ce132c8a
[INFO] running `"docker" "start" "-a" "1575cffb6fc7abd69635c5649b290902b2dbdc9844dd30877eaeba74ce132c8a"`
[INFO] [stderr]    Compiling minesweeper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `"docker" "inspect" "1575cffb6fc7abd69635c5649b290902b2dbdc9844dd30877eaeba74ce132c8a"`
[INFO] running `"docker" "rm" "-f" "1575cffb6fc7abd69635c5649b290902b2dbdc9844dd30877eaeba74ce132c8a"`
[INFO] [stdout] 1575cffb6fc7abd69635c5649b290902b2dbdc9844dd30877eaeba74ce132c8a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/srenevey/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 2e7c4dc1d60e215ed179c1c91911a40fb23851d79621302dca77d1640ac1cd70
[INFO] running `"docker" "start" "-a" "2e7c4dc1d60e215ed179c1c91911a40fb23851d79621302dca77d1640ac1cd70"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/minesweeper-81cbeff82ce05573
[INFO] [stderr]    Doc-tests minesweeper
[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] [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" "2e7c4dc1d60e215ed179c1c91911a40fb23851d79621302dca77d1640ac1cd70"`
[INFO] running `"docker" "rm" "-f" "2e7c4dc1d60e215ed179c1c91911a40fb23851d79621302dca77d1640ac1cd70"`
[INFO] [stdout] 2e7c4dc1d60e215ed179c1c91911a40fb23851d79621302dca77d1640ac1cd70