Nov 30 05:54:46.689 INFO checking brinchj/rust-sudoku-fun against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 05:54:46.690 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-6/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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"`
Nov 30 05:54:47.188 INFO [stdout] d0a1bf06714f122a1a22c0e3955c6647671ed58a2fe2885633c2f17cc5971c73
Nov 30 05:54:47.188 INFO running `"docker" "start" "-a" "d0a1bf06714f122a1a22c0e3955c6647671ed58a2fe2885633c2f17cc5971c73"`
Nov 30 05:54:48.104 INFO [stderr] usermod: no changes
Nov 30 05:54:48.228 INFO [stderr]    Compiling debugtrace v0.1.0
Nov 30 05:54:48.228 INFO [stderr]     Checking either v0.1.7
Nov 30 05:54:48.228 INFO [stderr]     Checking conv v0.3.3
Nov 30 05:54:48.228 INFO [stderr]     Checking backtrace v0.1.8
Nov 30 05:54:51.112 INFO [stderr]     Checking chomp v0.3.1
Nov 30 05:54:52.910 INFO [stderr]     Checking sudokusolver v0.1.0 (/source)
Nov 30 05:54:54.388 INFO [stderr] warning: unused `#[macro_use]` import
Nov 30 05:54:54.388 INFO [stderr]  --> src/lib.rs:3:1
Nov 30 05:54:54.388 INFO [stderr]   |
Nov 30 05:54:54.388 INFO [stderr] 3 | #[macro_use]
Nov 30 05:54:54.388 INFO [stderr]   | ^^^^^^^^^^^^
Nov 30 05:54:54.388 INFO [stderr]   |
Nov 30 05:54:54.389 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 05:54:54.389 INFO [stderr] 
Nov 30 05:54:54.504 INFO [stderr] warning: unused `#[macro_use]` import
Nov 30 05:54:54.504 INFO [stderr]  --> src/lib.rs:3:1
Nov 30 05:54:54.504 INFO [stderr]   |
Nov 30 05:54:54.504 INFO [stderr] 3 | #[macro_use]
Nov 30 05:54:54.504 INFO [stderr]   | ^^^^^^^^^^^^
Nov 30 05:54:54.504 INFO [stderr]   |
Nov 30 05:54:54.504 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 05:54:54.504 INFO [stderr] 
Nov 30 05:54:54.660 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Nov 30 05:54:54.660 INFO [stderr]  --> src/lib.rs:1:12
Nov 30 05:54:54.661 INFO [stderr]   |
Nov 30 05:54:54.661 INFO [stderr] 1 | #![feature(iterator_step_by)]
Nov 30 05:54:54.661 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Nov 30 05:54:54.662 INFO [stderr]   |
Nov 30 05:54:54.662 INFO [stderr]   = note: #[warn(stable_features)] on by default
Nov 30 05:54:54.662 INFO [stderr] 
Nov 30 05:54:54.740 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Nov 30 05:54:54.740 INFO [stderr]  --> src/lib.rs:1:12
Nov 30 05:54:54.740 INFO [stderr]   |
Nov 30 05:54:54.740 INFO [stderr] 1 | #![feature(iterator_step_by)]
Nov 30 05:54:54.741 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Nov 30 05:54:54.741 INFO [stderr]   |
Nov 30 05:54:54.741 INFO [stderr]   = note: #[warn(stable_features)] on by default
Nov 30 05:54:54.742 INFO [stderr] 
Nov 30 05:54:56.516 INFO [stderr] warning: unused `#[macro_use]` import
Nov 30 05:54:56.517 INFO [stderr]  --> src/main.rs:3:1
Nov 30 05:54:56.517 INFO [stderr]   |
Nov 30 05:54:56.517 INFO [stderr] 3 | #[macro_use]
Nov 30 05:54:56.517 INFO [stderr]   | ^^^^^^^^^^^^
Nov 30 05:54:56.518 INFO [stderr]   |
Nov 30 05:54:56.518 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 05:54:56.518 INFO [stderr] 
Nov 30 05:54:56.584 INFO [stderr] warning: unused `#[macro_use]` import
Nov 30 05:54:56.584 INFO [stderr]  --> src/main.rs:3:1
Nov 30 05:54:56.585 INFO [stderr]   |
Nov 30 05:54:56.585 INFO [stderr] 3 | #[macro_use]
Nov 30 05:54:56.585 INFO [stderr]   | ^^^^^^^^^^^^
Nov 30 05:54:56.586 INFO [stderr]   |
Nov 30 05:54:56.586 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 05:54:56.586 INFO [stderr] 
Nov 30 05:54:56.811 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Nov 30 05:54:56.811 INFO [stderr]  --> src/main.rs:1:12
Nov 30 05:54:56.811 INFO [stderr]   |
Nov 30 05:54:56.811 INFO [stderr] 1 | #![feature(iterator_step_by)]
Nov 30 05:54:56.811 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Nov 30 05:54:56.811 INFO [stderr]   |
Nov 30 05:54:56.811 INFO [stderr]   = note: #[warn(stable_features)] on by default
Nov 30 05:54:56.811 INFO [stderr] 
Nov 30 05:54:56.940 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Nov 30 05:54:56.940 INFO [stderr]  --> src/main.rs:1:12
Nov 30 05:54:56.940 INFO [stderr]   |
Nov 30 05:54:56.940 INFO [stderr] 1 | #![feature(iterator_step_by)]
Nov 30 05:54:56.940 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Nov 30 05:54:56.940 INFO [stderr]   |
Nov 30 05:54:56.940 INFO [stderr]   = note: #[warn(stable_features)] on by default
Nov 30 05:54:56.940 INFO [stderr] 
Nov 30 05:54:57.016 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.89s
Nov 30 05:54:57.025 INFO [stderr] su: No module specific data is present
Nov 30 05:54:58.337 INFO running `"docker" "inspect" "d0a1bf06714f122a1a22c0e3955c6647671ed58a2fe2885633c2f17cc5971c73"`
Nov 30 05:54:58.658 INFO running `"docker" "rm" "-f" "d0a1bf06714f122a1a22c0e3955c6647671ed58a2fe2885633c2f17cc5971c73"`
Nov 30 05:54:58.995 INFO [stdout] d0a1bf06714f122a1a22c0e3955c6647671ed58a2fe2885633c2f17cc5971c73