Dec 13 23:53:25.287 INFO testing chc4/minesweeper against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 23:53:25.288 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 13 23:53:25.748 INFO [stdout] 11fba0df13c0142cff11e1f2101b4a10aecf616f01aecd5f798472a5ed02a527
Dec 13 23:53:25.753 INFO running `"docker" "start" "-a" "11fba0df13c0142cff11e1f2101b4a10aecf616f01aecd5f798472a5ed02a527"`
Dec 13 23:53:27.447 INFO [stderr] usermod: no changes
Dec 13 23:53:27.570 INFO [stderr]    Compiling minesweeper v0.1.0 (/source)
Dec 13 23:53:28.215 INFO [stderr] warning: unused import: `std::io`
Dec 13 23:53:28.215 INFO [stderr]  --> src/main.rs:1:5
Dec 13 23:53:28.215 INFO [stderr]   |
Dec 13 23:53:28.215 INFO [stderr] 1 | use std::io;
Dec 13 23:53:28.215 INFO [stderr]   |     ^^^^^^^
Dec 13 23:53:28.215 INFO [stderr]   |
Dec 13 23:53:28.215 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 23:53:28.215 INFO [stderr] 
Dec 13 23:53:28.347 INFO [stderr] warning: unused variable: `stdin`
Dec 13 23:53:28.347 INFO [stderr]    --> src/main.rs:183:9
Dec 13 23:53:28.347 INFO [stderr]     |
Dec 13 23:53:28.347 INFO [stderr] 183 |     let stdin = std::io::stdin();
Dec 13 23:53:28.347 INFO [stderr]     |         ^^^^^ help: consider using `_stdin` instead
Dec 13 23:53:28.347 INFO [stderr]     |
Dec 13 23:53:28.347 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 13 23:53:28.347 INFO [stderr] 
Dec 13 23:53:28.347 INFO [stderr] warning: unused variable: `i`
Dec 13 23:53:28.347 INFO [stderr]   --> src/main.rs:56:13
Dec 13 23:53:28.347 INFO [stderr]    |
Dec 13 23:53:28.347 INFO [stderr] 56 |         for i in 0..y {
Dec 13 23:53:28.347 INFO [stderr]    |             ^ help: consider using `_i` instead
Dec 13 23:53:28.347 INFO [stderr] 
Dec 13 23:53:28.347 INFO [stderr] warning: unused variable: `j`
Dec 13 23:53:28.347 INFO [stderr]   --> src/main.rs:58:17
Dec 13 23:53:28.347 INFO [stderr]    |
Dec 13 23:53:28.347 INFO [stderr] 58 |             for j in 0..x {
Dec 13 23:53:28.347 INFO [stderr]    |                 ^ help: consider using `_j` instead
Dec 13 23:53:28.347 INFO [stderr] 
Dec 13 23:53:28.347 INFO [stderr] warning: unused variable: `count`
Dec 13 23:53:28.347 INFO [stderr]    --> src/main.rs:108:36
Dec 13 23:53:28.347 INFO [stderr]     |
Dec 13 23:53:28.347 INFO [stderr] 108 |         if let Slot::Empty(visible,count) = slot {
Dec 13 23:53:28.347 INFO [stderr]     |                                    ^^^^^ help: consider using `_count` instead
Dec 13 23:53:28.347 INFO [stderr] 
Dec 13 23:53:28.351 INFO [stderr] warning: variable does not need to be mutable
Dec 13 23:53:28.351 INFO [stderr]   --> src/main.rs:30:9
Dec 13 23:53:28.351 INFO [stderr]    |
Dec 13 23:53:28.351 INFO [stderr] 30 |     let mut stdin = std::io::stdin();
Dec 13 23:53:28.351 INFO [stderr]    |         ----^^^^^
Dec 13 23:53:28.351 INFO [stderr]    |         |
Dec 13 23:53:28.351 INFO [stderr]    |         help: remove this `mut`
Dec 13 23:53:28.351 INFO [stderr]    |
Dec 13 23:53:28.351 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 23:53:28.351 INFO [stderr] 
Dec 13 23:53:29.667 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.19s
Dec 13 23:53:29.671 INFO [stderr] su: No module specific data is present
Dec 13 23:53:30.651 INFO running `"docker" "inspect" "11fba0df13c0142cff11e1f2101b4a10aecf616f01aecd5f798472a5ed02a527"`
Dec 13 23:53:30.971 INFO running `"docker" "rm" "-f" "11fba0df13c0142cff11e1f2101b4a10aecf616f01aecd5f798472a5ed02a527"`
Dec 13 23:53:31.377 INFO [stdout] 11fba0df13c0142cff11e1f2101b4a10aecf616f01aecd5f798472a5ed02a527
Dec 13 23:53:31.378 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 13 23:53:31.859 INFO [stdout] f24d56430ae5a090e16e649c8b886a3bac97d3c994e741d7ea9a5d450582f0ec
Dec 13 23:53:31.867 INFO running `"docker" "start" "-a" "f24d56430ae5a090e16e649c8b886a3bac97d3c994e741d7ea9a5d450582f0ec"`
Dec 13 23:53:32.927 INFO [stderr] usermod: no changes
Dec 13 23:53:32.999 INFO [stderr]    Compiling minesweeper v0.1.0 (/source)
Dec 13 23:53:33.651 INFO [stderr] warning: unused import: `std::io`
Dec 13 23:53:33.651 INFO [stderr]  --> src/main.rs:1:5
Dec 13 23:53:33.651 INFO [stderr]   |
Dec 13 23:53:33.651 INFO [stderr] 1 | use std::io;
Dec 13 23:53:33.651 INFO [stderr]   |     ^^^^^^^
Dec 13 23:53:33.651 INFO [stderr]   |
Dec 13 23:53:33.651 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 13 23:53:33.651 INFO [stderr] 
Dec 13 23:53:33.771 INFO [stderr] warning: unused variable: `stdin`
Dec 13 23:53:33.771 INFO [stderr]    --> src/main.rs:183:9
Dec 13 23:53:33.771 INFO [stderr]     |
Dec 13 23:53:33.771 INFO [stderr] 183 |     let stdin = std::io::stdin();
Dec 13 23:53:33.771 INFO [stderr]     |         ^^^^^ help: consider using `_stdin` instead
Dec 13 23:53:33.771 INFO [stderr]     |
Dec 13 23:53:33.771 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 13 23:53:33.771 INFO [stderr] 
Dec 13 23:53:33.771 INFO [stderr] warning: unused variable: `i`
Dec 13 23:53:33.771 INFO [stderr]   --> src/main.rs:56:13
Dec 13 23:53:33.771 INFO [stderr]    |
Dec 13 23:53:33.771 INFO [stderr] 56 |         for i in 0..y {
Dec 13 23:53:33.771 INFO [stderr]    |             ^ help: consider using `_i` instead
Dec 13 23:53:33.771 INFO [stderr] 
Dec 13 23:53:33.771 INFO [stderr] warning: unused variable: `j`
Dec 13 23:53:33.771 INFO [stderr]   --> src/main.rs:58:17
Dec 13 23:53:33.771 INFO [stderr]    |
Dec 13 23:53:33.771 INFO [stderr] 58 |             for j in 0..x {
Dec 13 23:53:33.771 INFO [stderr]    |                 ^ help: consider using `_j` instead
Dec 13 23:53:33.771 INFO [stderr] 
Dec 13 23:53:33.771 INFO [stderr] warning: unused variable: `count`
Dec 13 23:53:33.771 INFO [stderr]    --> src/main.rs:108:36
Dec 13 23:53:33.771 INFO [stderr]     |
Dec 13 23:53:33.771 INFO [stderr] 108 |         if let Slot::Empty(visible,count) = slot {
Dec 13 23:53:33.771 INFO [stderr]     |                                    ^^^^^ help: consider using `_count` instead
Dec 13 23:53:33.771 INFO [stderr] 
Dec 13 23:53:33.791 INFO [stderr] warning: variable does not need to be mutable
Dec 13 23:53:33.791 INFO [stderr]   --> src/main.rs:30:9
Dec 13 23:53:33.791 INFO [stderr]    |
Dec 13 23:53:33.791 INFO [stderr] 30 |     let mut stdin = std::io::stdin();
Dec 13 23:53:33.791 INFO [stderr]    |         ----^^^^^
Dec 13 23:53:33.791 INFO [stderr]    |         |
Dec 13 23:53:33.791 INFO [stderr]    |         help: remove this `mut`
Dec 13 23:53:33.791 INFO [stderr]    |
Dec 13 23:53:33.791 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 13 23:53:33.791 INFO [stderr] 
Dec 13 23:53:34.225 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
Dec 13 23:53:34.231 INFO [stderr] su: No module specific data is present
Dec 13 23:53:34.869 INFO running `"docker" "inspect" "f24d56430ae5a090e16e649c8b886a3bac97d3c994e741d7ea9a5d450582f0ec"`
Dec 13 23:53:35.115 INFO running `"docker" "rm" "-f" "f24d56430ae5a090e16e649c8b886a3bac97d3c994e741d7ea9a5d450582f0ec"`
Dec 13 23:53:35.542 INFO [stdout] f24d56430ae5a090e16e649c8b886a3bac97d3c994e741d7ea9a5d450582f0ec
Dec 13 23:53:35.551 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-1/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 13 23:53:36.255 INFO [stdout] 93bf7a0c9c5bc8e3296c4d5e1424ba3118f9dc68b0dab87788af690d889e8ca2
Dec 13 23:53:36.255 INFO running `"docker" "start" "-a" "93bf7a0c9c5bc8e3296c4d5e1424ba3118f9dc68b0dab87788af690d889e8ca2"`
Dec 13 23:53:37.743 INFO [stderr] usermod: no changes
Dec 13 23:53:37.807 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Dec 13 23:53:37.807 INFO [stderr]      Running /target/debug/deps/minesweeper-c2e9f1deb1794943
Dec 13 23:53:37.831 INFO [stdout] 
Dec 13 23:53:37.831 INFO [stdout] running 0 tests
Dec 13 23:53:37.831 INFO [stdout] 
Dec 13 23:53:37.831 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 13 23:53:37.831 INFO [stdout] 
Dec 13 23:53:37.842 INFO [stderr] su: No module specific data is present
Dec 13 23:53:38.572 INFO running `"docker" "inspect" "93bf7a0c9c5bc8e3296c4d5e1424ba3118f9dc68b0dab87788af690d889e8ca2"`
Dec 13 23:53:38.855 INFO running `"docker" "rm" "-f" "93bf7a0c9c5bc8e3296c4d5e1424ba3118f9dc68b0dab87788af690d889e8ca2"`
Dec 13 23:53:39.239 INFO [stdout] 93bf7a0c9c5bc8e3296c4d5e1424ba3118f9dc68b0dab87788af690d889e8ca2