Dec 11 23:23:56.074 INFO checking aacunningham/sudoku_ai_rust against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 23:23:56.074 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-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 11 23:23:56.302 INFO [stdout] b6dcb162f107bedc646792b710cb34f924199f5403ab695d82c84579262893cc
Dec 11 23:23:56.306 INFO running `"docker" "start" "-a" "b6dcb162f107bedc646792b710cb34f924199f5403ab695d82c84579262893cc"`
Dec 11 23:23:57.140 INFO [stderr] usermod: no changes
Dec 11 23:23:57.204 INFO [stderr]     Checking sudoku_ai v0.1.0 (/source)
Dec 11 23:23:57.720 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 11 23:23:57.721 INFO [stderr]  --> src/lib.rs:1:12
Dec 11 23:23:57.721 INFO [stderr]   |
Dec 11 23:23:57.721 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 11 23:23:57.721 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 11 23:23:57.721 INFO [stderr]   |
Dec 11 23:23:57.721 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 11 23:23:57.721 INFO [stderr] 
Dec 11 23:23:58.046 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 11 23:23:58.046 INFO [stderr]  --> src/lib.rs:1:12
Dec 11 23:23:58.046 INFO [stderr]   |
Dec 11 23:23:58.047 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 11 23:23:58.047 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 11 23:23:58.047 INFO [stderr]   |
Dec 11 23:23:58.048 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 11 23:23:58.048 INFO [stderr] 
Dec 11 23:23:58.696 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
Dec 11 23:23:58.698 INFO [stderr] su: No module specific data is present
Dec 11 23:23:59.650 INFO running `"docker" "inspect" "b6dcb162f107bedc646792b710cb34f924199f5403ab695d82c84579262893cc"`
Dec 11 23:23:59.807 INFO running `"docker" "rm" "-f" "b6dcb162f107bedc646792b710cb34f924199f5403ab695d82c84579262893cc"`
Dec 11 23:23:59.964 INFO [stdout] b6dcb162f107bedc646792b710cb34f924199f5403ab695d82c84579262893cc