Nov 17 10:30:19.523 INFO testing aacunningham/sudoku_ai_rust against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 17 10:30:19.523 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 10:30:19.772 INFO [stdout] ea546f1d3878f82549ca013d75daa731a880f5811a8e3dc8c07b4a1f25c823d6
Nov 17 10:30:19.774 INFO running `"docker" "start" "-a" "ea546f1d3878f82549ca013d75daa731a880f5811a8e3dc8c07b4a1f25c823d6"`
Nov 17 10:30:21.537 INFO [stderr] usermod: no changes
Nov 17 10:30:21.651 INFO [stderr]    Compiling sudoku_ai v0.1.0 (/source)
Nov 17 10:30:22.149 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Nov 17 10:30:22.150 INFO [stderr]  --> src/lib.rs:1:12
Nov 17 10:30:22.150 INFO [stderr]   |
Nov 17 10:30:22.150 INFO [stderr] 1 | #![feature(iterator_step_by)]
Nov 17 10:30:22.151 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Nov 17 10:30:22.151 INFO [stderr]   |
Nov 17 10:30:22.151 INFO [stderr]   = note: #[warn(stable_features)] on by default
Nov 17 10:30:22.152 INFO [stderr] 
Nov 17 10:30:23.755 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.15s
Nov 17 10:30:23.759 INFO [stderr] su: No module specific data is present
Nov 17 10:30:24.271 INFO running `"docker" "inspect" "ea546f1d3878f82549ca013d75daa731a880f5811a8e3dc8c07b4a1f25c823d6"`
Nov 17 10:30:24.596 INFO running `"docker" "rm" "-f" "ea546f1d3878f82549ca013d75daa731a880f5811a8e3dc8c07b4a1f25c823d6"`
Nov 17 10:30:24.839 INFO [stdout] ea546f1d3878f82549ca013d75daa731a880f5811a8e3dc8c07b4a1f25c823d6
Nov 17 10:30:24.841 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 10:30:25.376 INFO [stdout] 0207e947c17fa3858d85f0c6a7c302f55ad4c7214202c958018292cadab405bb
Nov 17 10:30:25.377 INFO running `"docker" "start" "-a" "0207e947c17fa3858d85f0c6a7c302f55ad4c7214202c958018292cadab405bb"`
Nov 17 10:30:26.074 INFO [stderr] usermod: no changes
Nov 17 10:30:26.100 INFO [stderr]    Compiling sudoku_ai v0.1.0 (/source)
Nov 17 10:30:26.607 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Nov 17 10:30:26.607 INFO [stderr]  --> src/lib.rs:1:12
Nov 17 10:30:26.607 INFO [stderr]   |
Nov 17 10:30:26.607 INFO [stderr] 1 | #![feature(iterator_step_by)]
Nov 17 10:30:26.607 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Nov 17 10:30:26.607 INFO [stderr]   |
Nov 17 10:30:26.607 INFO [stderr]   = note: #[warn(stable_features)] on by default
Nov 17 10:30:26.607 INFO [stderr] 
Nov 17 10:30:26.929 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
Nov 17 10:30:26.935 INFO [stderr] su: No module specific data is present
Nov 17 10:30:27.523 INFO running `"docker" "inspect" "0207e947c17fa3858d85f0c6a7c302f55ad4c7214202c958018292cadab405bb"`
Nov 17 10:30:27.805 INFO running `"docker" "rm" "-f" "0207e947c17fa3858d85f0c6a7c302f55ad4c7214202c958018292cadab405bb"`
Nov 17 10:30:28.027 INFO [stdout] 0207e947c17fa3858d85f0c6a7c302f55ad4c7214202c958018292cadab405bb
Nov 17 10:30:28.029 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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"`
Nov 17 10:30:28.285 INFO [stdout] 19e596e8cce9dbc645d9cf431ae25b3db7b188975056bda66a503306c935a0b2
Nov 17 10:30:28.287 INFO running `"docker" "start" "-a" "19e596e8cce9dbc645d9cf431ae25b3db7b188975056bda66a503306c935a0b2"`
Nov 17 10:30:29.144 INFO [stderr] usermod: no changes
Nov 17 10:30:29.207 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Nov 17 10:30:29.208 INFO [stderr]      Running /target/debug/deps/sudoku_ai-814f5e4702c9f4f2
Nov 17 10:30:29.212 INFO [stderr]      Running /target/debug/deps/sudoku_ai-ce073e587b56f916
Nov 17 10:30:29.213 INFO [stdout] 
Nov 17 10:30:29.213 INFO [stderr]    Doc-tests sudoku_ai
Nov 17 10:30:29.213 INFO [stdout] running 0 tests
Nov 17 10:30:29.214 INFO [stdout] 
Nov 17 10:30:29.214 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 10:30:29.215 INFO [stdout] 
Nov 17 10:30:29.215 INFO [stdout] 
Nov 17 10:30:29.215 INFO [stdout] running 0 tests
Nov 17 10:30:29.216 INFO [stdout] 
Nov 17 10:30:29.216 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 10:30:29.216 INFO [stdout] 
Nov 17 10:30:29.729 INFO [stdout] 
Nov 17 10:30:29.730 INFO [stdout] running 6 tests
Nov 17 10:30:30.718 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::read_from_file (line 46) ... ok
Nov 17 10:30:30.885 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::is_valid (line 144) ... ok
Nov 17 10:30:31.399 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::read_from_string (line 84) ... ok
Nov 17 10:30:31.650 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle (line 12) ... ok
Nov 17 10:30:31.779 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::solve (line 263) ... ok
Nov 17 10:30:31.807 INFO [stdout] test src/sudoku/puzzle.rs - sudoku::puzzle::Puzzle::is_solved (line 115) ... ok
Nov 17 10:30:31.807 INFO [stdout] 
Nov 17 10:30:31.807 INFO [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 10:30:31.807 INFO [stdout] 
Nov 17 10:30:31.822 INFO [stderr] su: No module specific data is present
Nov 17 10:30:32.684 INFO running `"docker" "inspect" "19e596e8cce9dbc645d9cf431ae25b3db7b188975056bda66a503306c935a0b2"`
Nov 17 10:30:32.857 INFO running `"docker" "rm" "-f" "19e596e8cce9dbc645d9cf431ae25b3db7b188975056bda66a503306c935a0b2"`
Nov 17 10:30:33.108 INFO [stdout] 19e596e8cce9dbc645d9cf431ae25b3db7b188975056bda66a503306c935a0b2