Dec 04 21:31:00.776 INFO checking brinchj/rust-sudoku-fun against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 21:31:00.777 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 21:31:01.279 INFO [stdout] 16ad2d34aee08604fa88d8b8fe3bd556a21c5bd8a99bf88868627c8867658fef
Dec 04 21:31:01.279 INFO running `"docker" "start" "-a" "16ad2d34aee08604fa88d8b8fe3bd556a21c5bd8a99bf88868627c8867658fef"`
Dec 04 21:31:03.043 INFO [stderr] usermod: no changes
Dec 04 21:31:03.199 INFO [stderr]    Compiling debugtrace v0.1.0
Dec 04 21:31:03.199 INFO [stderr]     Checking debug-builders v0.1.0
Dec 04 21:31:03.199 INFO [stderr]     Checking either v0.1.7
Dec 04 21:31:03.199 INFO [stderr]     Checking conv v0.3.3
Dec 04 21:31:05.100 INFO [stderr]     Checking backtrace v0.1.8
Dec 04 21:31:07.339 INFO [stderr]     Checking chomp v0.3.1
Dec 04 21:31:09.289 INFO [stderr]     Checking sudokusolver v0.1.0 (/source)
Dec 04 21:31:10.823 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 21:31:10.823 INFO [stderr]  --> src/lib.rs:3:1
Dec 04 21:31:10.823 INFO [stderr]   |
Dec 04 21:31:10.823 INFO [stderr] 3 | #[macro_use]
Dec 04 21:31:10.823 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 21:31:10.823 INFO [stderr]   |
Dec 04 21:31:10.823 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 21:31:10.823 INFO [stderr] 
Dec 04 21:31:11.079 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 04 21:31:11.079 INFO [stderr]  --> src/lib.rs:1:12
Dec 04 21:31:11.079 INFO [stderr]   |
Dec 04 21:31:11.079 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 04 21:31:11.079 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 21:31:11.079 INFO [stderr]   |
Dec 04 21:31:11.079 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 21:31:11.079 INFO [stderr] 
Dec 04 21:31:11.191 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 21:31:11.191 INFO [stderr]  --> src/lib.rs:3:1
Dec 04 21:31:11.191 INFO [stderr]   |
Dec 04 21:31:11.191 INFO [stderr] 3 | #[macro_use]
Dec 04 21:31:11.191 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 21:31:11.191 INFO [stderr]   |
Dec 04 21:31:11.191 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 21:31:11.191 INFO [stderr] 
Dec 04 21:31:11.334 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 04 21:31:11.334 INFO [stderr]  --> src/lib.rs:1:12
Dec 04 21:31:11.334 INFO [stderr]   |
Dec 04 21:31:11.334 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 04 21:31:11.334 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 21:31:11.334 INFO [stderr]   |
Dec 04 21:31:11.334 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 21:31:11.334 INFO [stderr] 
Dec 04 21:31:13.195 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 21:31:13.195 INFO [stderr]  --> src/main.rs:3:1
Dec 04 21:31:13.195 INFO [stderr]   |
Dec 04 21:31:13.195 INFO [stderr] 3 | #[macro_use]
Dec 04 21:31:13.195 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 21:31:13.195 INFO [stderr]   |
Dec 04 21:31:13.195 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 21:31:13.195 INFO [stderr] 
Dec 04 21:31:13.423 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 04 21:31:13.423 INFO [stderr]  --> src/main.rs:1:12
Dec 04 21:31:13.423 INFO [stderr]   |
Dec 04 21:31:13.423 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 04 21:31:13.423 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 21:31:13.423 INFO [stderr]   |
Dec 04 21:31:13.423 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 21:31:13.423 INFO [stderr] 
Dec 04 21:31:13.615 INFO [stderr] warning: unused `#[macro_use]` import
Dec 04 21:31:13.615 INFO [stderr]  --> src/main.rs:3:1
Dec 04 21:31:13.616 INFO [stderr]   |
Dec 04 21:31:13.616 INFO [stderr] 3 | #[macro_use]
Dec 04 21:31:13.616 INFO [stderr]   | ^^^^^^^^^^^^
Dec 04 21:31:13.616 INFO [stderr]   |
Dec 04 21:31:13.619 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 21:31:13.619 INFO [stderr] 
Dec 04 21:31:13.798 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 04 21:31:13.798 INFO [stderr]  --> src/main.rs:1:12
Dec 04 21:31:13.798 INFO [stderr]   |
Dec 04 21:31:13.798 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 04 21:31:13.798 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 04 21:31:13.798 INFO [stderr]   |
Dec 04 21:31:13.798 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 04 21:31:13.798 INFO [stderr] 
Dec 04 21:31:13.835 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.75s
Dec 04 21:31:13.851 INFO [stderr] su: No module specific data is present
Dec 04 21:31:14.677 INFO running `"docker" "inspect" "16ad2d34aee08604fa88d8b8fe3bd556a21c5bd8a99bf88868627c8867658fef"`
Dec 04 21:31:14.937 INFO running `"docker" "rm" "-f" "16ad2d34aee08604fa88d8b8fe3bd556a21c5bd8a99bf88868627c8867658fef"`
Dec 04 21:31:15.276 INFO [stdout] 16ad2d34aee08604fa88d8b8fe3bd556a21c5bd8a99bf88868627c8867658fef