[INFO] updating cached repository Embraser01/Minesweeper
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Embraser01/Minesweeper
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Embraser01/Minesweeper" "work/ex/beta-1.37-6/sources/1.36.0/gh/Embraser01/Minesweeper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Embraser01/Minesweeper'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Embraser01/Minesweeper" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Embraser01/Minesweeper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Embraser01/Minesweeper'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b78104a8e28d6a724f72bfe8c61ddc5ccde20876
[INFO] sha for GitHub repo Embraser01/Minesweeper: b78104a8e28d6a724f72bfe8c61ddc5ccde20876
[INFO] validating manifest of Embraser01/Minesweeper on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Embraser01/Minesweeper on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Embraser01/Minesweeper
[INFO] finished frobbing Embraser01/Minesweeper
[INFO] frobbed toml for Embraser01/Minesweeper written to work/ex/beta-1.37-6/sources/1.36.0/gh/Embraser01/Minesweeper/Cargo.toml
[INFO] started frobbing Embraser01/Minesweeper
[INFO] finished frobbing Embraser01/Minesweeper
[INFO] frobbed toml for Embraser01/Minesweeper written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Embraser01/Minesweeper/Cargo.toml
[INFO] crate Embraser01/Minesweeper already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Embraser01/Minesweeper against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Embraser01/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 4b27d8506ba5a13e942e454bc6b08ae3ff812c09a291f6b5b9ca1c8acb8c2196
[INFO] running `"docker" "start" "-a" "4b27d8506ba5a13e942e454bc6b08ae3ff812c09a291f6b5b9ca1c8acb8c2196"`
[INFO] [stderr]    Compiling minesweeper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `on_click`
[INFO] [stderr]   --> src/field/mod.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn on_click(&mut self, x: usize, y: usize) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `"docker" "inspect" "4b27d8506ba5a13e942e454bc6b08ae3ff812c09a291f6b5b9ca1c8acb8c2196"`
[INFO] running `"docker" "rm" "-f" "4b27d8506ba5a13e942e454bc6b08ae3ff812c09a291f6b5b9ca1c8acb8c2196"`
[INFO] [stdout] 4b27d8506ba5a13e942e454bc6b08ae3ff812c09a291f6b5b9ca1c8acb8c2196
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Embraser01/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2121a16e6d243a69fe26b80a9f7bae5f23fc14511179f618e376a8efacff50a8
[INFO] running `"docker" "start" "-a" "2121a16e6d243a69fe26b80a9f7bae5f23fc14511179f618e376a8efacff50a8"`
[INFO] [stderr]    Compiling minesweeper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `on_click`
[INFO] [stderr]   --> src/field/mod.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn on_click(&mut self, x: usize, y: usize) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `"docker" "inspect" "2121a16e6d243a69fe26b80a9f7bae5f23fc14511179f618e376a8efacff50a8"`
[INFO] running `"docker" "rm" "-f" "2121a16e6d243a69fe26b80a9f7bae5f23fc14511179f618e376a8efacff50a8"`
[INFO] [stdout] 2121a16e6d243a69fe26b80a9f7bae5f23fc14511179f618e376a8efacff50a8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Embraser01/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 869e42061621c642e164af9f4186306cd0e5b436d2f8c646faeb6a17dc97e0e7
[INFO] running `"docker" "start" "-a" "869e42061621c642e164af9f4186306cd0e5b436d2f8c646faeb6a17dc97e0e7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/minesweeper-5f269a0f8c9e6358
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test field::cell::tests::should_clone ... ok
[INFO] [stdout] test field::cell::tests::value_must_be_invisible ... ok
[INFO] [stdout] test field::cell::tests::value_must_be_visible ... ok
[INFO] [stdout] test field::tests::display_all_invisible ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/minesweeper-3052d3237c901d13
[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] [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] running `"docker" "inspect" "869e42061621c642e164af9f4186306cd0e5b436d2f8c646faeb6a17dc97e0e7"`
[INFO] running `"docker" "rm" "-f" "869e42061621c642e164af9f4186306cd0e5b436d2f8c646faeb6a17dc97e0e7"`
[INFO] [stdout] 869e42061621c642e164af9f4186306cd0e5b436d2f8c646faeb6a17dc97e0e7