Dec 06 04:02:45.827 INFO testing chc4/minesweeper against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 06 04:02:45.827 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 06 04:02:46.197 INFO [stdout] a798b52f2bf7b63b5ea7f5b0d0dc748862008b8dd5ae80070a2b2b48ff2a72b2
Dec 06 04:02:46.199 INFO running `"docker" "start" "-a" "a798b52f2bf7b63b5ea7f5b0d0dc748862008b8dd5ae80070a2b2b48ff2a72b2"`
Dec 06 04:02:46.874 INFO [stderr] usermod: no changes
Dec 06 04:02:46.928 INFO [stderr]    Compiling minesweeper v0.1.0 (/source)
Dec 06 04:02:47.366 INFO [stderr] warning: unused import: `std::io`
Dec 06 04:02:47.366 INFO [stderr]  --> src/main.rs:1:5
Dec 06 04:02:47.366 INFO [stderr]   |
Dec 06 04:02:47.366 INFO [stderr] 1 | use std::io;
Dec 06 04:02:47.366 INFO [stderr]   |     ^^^^^^^
Dec 06 04:02:47.366 INFO [stderr]   |
Dec 06 04:02:47.366 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 06 04:02:47.366 INFO [stderr] 
Dec 06 04:02:47.465 INFO [stderr] warning: unused variable: `stdin`
Dec 06 04:02:47.465 INFO [stderr]    --> src/main.rs:183:9
Dec 06 04:02:47.465 INFO [stderr]     |
Dec 06 04:02:47.465 INFO [stderr] 183 |     let stdin = std::io::stdin();
Dec 06 04:02:47.465 INFO [stderr]     |         ^^^^^ help: consider using `_stdin` instead
Dec 06 04:02:47.465 INFO [stderr]     |
Dec 06 04:02:47.465 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 06 04:02:47.465 INFO [stderr] 
Dec 06 04:02:47.465 INFO [stderr] warning: unused variable: `i`
Dec 06 04:02:47.465 INFO [stderr]   --> src/main.rs:56:13
Dec 06 04:02:47.465 INFO [stderr]    |
Dec 06 04:02:47.465 INFO [stderr] 56 |         for i in 0..y {
Dec 06 04:02:47.465 INFO [stderr]    |             ^ help: consider using `_i` instead
Dec 06 04:02:47.465 INFO [stderr] 
Dec 06 04:02:47.465 INFO [stderr] warning: unused variable: `j`
Dec 06 04:02:47.465 INFO [stderr]   --> src/main.rs:58:17
Dec 06 04:02:47.465 INFO [stderr]    |
Dec 06 04:02:47.465 INFO [stderr] 58 |             for j in 0..x {
Dec 06 04:02:47.465 INFO [stderr]    |                 ^ help: consider using `_j` instead
Dec 06 04:02:47.465 INFO [stderr] 
Dec 06 04:02:47.465 INFO [stderr] warning: unused variable: `count`
Dec 06 04:02:47.465 INFO [stderr]    --> src/main.rs:108:36
Dec 06 04:02:47.465 INFO [stderr]     |
Dec 06 04:02:47.465 INFO [stderr] 108 |         if let Slot::Empty(visible,count) = slot {
Dec 06 04:02:47.465 INFO [stderr]     |                                    ^^^^^ help: consider using `_count` instead
Dec 06 04:02:47.465 INFO [stderr] 
Dec 06 04:02:47.470 INFO [stderr] warning: variable does not need to be mutable
Dec 06 04:02:47.470 INFO [stderr]   --> src/main.rs:30:9
Dec 06 04:02:47.470 INFO [stderr]    |
Dec 06 04:02:47.470 INFO [stderr] 30 |     let mut stdin = std::io::stdin();
Dec 06 04:02:47.470 INFO [stderr]    |         ----^^^^^
Dec 06 04:02:47.470 INFO [stderr]    |         |
Dec 06 04:02:47.470 INFO [stderr]    |         help: remove this `mut`
Dec 06 04:02:47.470 INFO [stderr]    |
Dec 06 04:02:47.470 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 04:02:47.470 INFO [stderr] 
Dec 06 04:02:48.560 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.66s
Dec 06 04:02:48.560 INFO [stderr] su: No module specific data is present
Dec 06 04:02:49.209 INFO running `"docker" "inspect" "a798b52f2bf7b63b5ea7f5b0d0dc748862008b8dd5ae80070a2b2b48ff2a72b2"`
Dec 06 04:02:49.510 INFO running `"docker" "rm" "-f" "a798b52f2bf7b63b5ea7f5b0d0dc748862008b8dd5ae80070a2b2b48ff2a72b2"`
Dec 06 04:02:49.832 INFO [stdout] a798b52f2bf7b63b5ea7f5b0d0dc748862008b8dd5ae80070a2b2b48ff2a72b2
Dec 06 04:02:49.840 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 06 04:02:50.280 INFO [stdout] 28f8a655dd232ed8ecec045b9447774af6ad753122c28521e0081196b6506525
Dec 06 04:02:50.282 INFO running `"docker" "start" "-a" "28f8a655dd232ed8ecec045b9447774af6ad753122c28521e0081196b6506525"`
Dec 06 04:02:51.604 INFO [stderr] usermod: no changes
Dec 06 04:02:51.667 INFO [stderr]    Compiling minesweeper v0.1.0 (/source)
Dec 06 04:02:52.188 INFO [stderr] warning: unused import: `std::io`
Dec 06 04:02:52.188 INFO [stderr]  --> src/main.rs:1:5
Dec 06 04:02:52.188 INFO [stderr]   |
Dec 06 04:02:52.188 INFO [stderr] 1 | use std::io;
Dec 06 04:02:52.188 INFO [stderr]   |     ^^^^^^^
Dec 06 04:02:52.188 INFO [stderr]   |
Dec 06 04:02:52.188 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 06 04:02:52.188 INFO [stderr] 
Dec 06 04:02:52.296 INFO [stderr] warning: unused variable: `stdin`
Dec 06 04:02:52.296 INFO [stderr]    --> src/main.rs:183:9
Dec 06 04:02:52.296 INFO [stderr]     |
Dec 06 04:02:52.296 INFO [stderr] 183 |     let stdin = std::io::stdin();
Dec 06 04:02:52.296 INFO [stderr]     |         ^^^^^ help: consider using `_stdin` instead
Dec 06 04:02:52.296 INFO [stderr]     |
Dec 06 04:02:52.296 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 06 04:02:52.296 INFO [stderr] 
Dec 06 04:02:52.296 INFO [stderr] warning: unused variable: `i`
Dec 06 04:02:52.296 INFO [stderr]   --> src/main.rs:56:13
Dec 06 04:02:52.296 INFO [stderr]    |
Dec 06 04:02:52.296 INFO [stderr] 56 |         for i in 0..y {
Dec 06 04:02:52.296 INFO [stderr]    |             ^ help: consider using `_i` instead
Dec 06 04:02:52.296 INFO [stderr] 
Dec 06 04:02:52.296 INFO [stderr] warning: unused variable: `j`
Dec 06 04:02:52.296 INFO [stderr]   --> src/main.rs:58:17
Dec 06 04:02:52.296 INFO [stderr]    |
Dec 06 04:02:52.296 INFO [stderr] 58 |             for j in 0..x {
Dec 06 04:02:52.296 INFO [stderr]    |                 ^ help: consider using `_j` instead
Dec 06 04:02:52.296 INFO [stderr] 
Dec 06 04:02:52.296 INFO [stderr] warning: unused variable: `count`
Dec 06 04:02:52.296 INFO [stderr]    --> src/main.rs:108:36
Dec 06 04:02:52.296 INFO [stderr]     |
Dec 06 04:02:52.296 INFO [stderr] 108 |         if let Slot::Empty(visible,count) = slot {
Dec 06 04:02:52.296 INFO [stderr]     |                                    ^^^^^ help: consider using `_count` instead
Dec 06 04:02:52.296 INFO [stderr] 
Dec 06 04:02:52.296 INFO [stderr] warning: variable does not need to be mutable
Dec 06 04:02:52.296 INFO [stderr]   --> src/main.rs:30:9
Dec 06 04:02:52.296 INFO [stderr]    |
Dec 06 04:02:52.296 INFO [stderr] 30 |     let mut stdin = std::io::stdin();
Dec 06 04:02:52.296 INFO [stderr]    |         ----^^^^^
Dec 06 04:02:52.296 INFO [stderr]    |         |
Dec 06 04:02:52.296 INFO [stderr]    |         help: remove this `mut`
Dec 06 04:02:52.296 INFO [stderr]    |
Dec 06 04:02:52.296 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 04:02:52.296 INFO [stderr] 
Dec 06 04:02:52.659 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
Dec 06 04:02:52.664 INFO [stderr] su: No module specific data is present
Dec 06 04:02:53.400 INFO running `"docker" "inspect" "28f8a655dd232ed8ecec045b9447774af6ad753122c28521e0081196b6506525"`
Dec 06 04:02:53.688 INFO running `"docker" "rm" "-f" "28f8a655dd232ed8ecec045b9447774af6ad753122c28521e0081196b6506525"`
Dec 06 04:02:53.952 INFO [stdout] 28f8a655dd232ed8ecec045b9447774af6ad753122c28521e0081196b6506525
Dec 06 04:02:53.954 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-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 06 04:02:54.450 INFO [stdout] 73df15797593634767bbc0009d514649252909cd1e71ea561c0e0c3e3337b3fe
Dec 06 04:02:54.460 INFO running `"docker" "start" "-a" "73df15797593634767bbc0009d514649252909cd1e71ea561c0e0c3e3337b3fe"`
Dec 06 04:02:55.988 INFO [stderr] usermod: no changes
Dec 06 04:02:56.056 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Dec 06 04:02:56.056 INFO [stderr]      Running /target/debug/deps/minesweeper-36e7d0eb328dce2a
Dec 06 04:02:56.062 INFO [stdout] 
Dec 06 04:02:56.062 INFO [stdout] running 0 tests
Dec 06 04:02:56.062 INFO [stdout] 
Dec 06 04:02:56.062 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 04:02:56.062 INFO [stdout] 
Dec 06 04:02:56.066 INFO [stderr] su: No module specific data is present
Dec 06 04:02:57.222 INFO running `"docker" "inspect" "73df15797593634767bbc0009d514649252909cd1e71ea561c0e0c3e3337b3fe"`
Dec 06 04:02:57.594 INFO running `"docker" "rm" "-f" "73df15797593634767bbc0009d514649252909cd1e71ea561c0e0c3e3337b3fe"`
Dec 06 04:02:57.928 INFO [stdout] 73df15797593634767bbc0009d514649252909cd1e71ea561c0e0c3e3337b3fe