Dec 11 19:41:44.917 INFO checking dhartunian/advent-of-code-2018 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 19:41:44.917 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 19:41:45.265 INFO [stdout] 0b936c1267b3b7d069c2a248f06584cb933e9189bd8f7e1107f209d6631ca52f
Dec 11 19:41:45.267 INFO running `"docker" "start" "-a" "0b936c1267b3b7d069c2a248f06584cb933e9189bd8f7e1107f209d6631ca52f"`
Dec 11 19:41:46.604 INFO [stderr] usermod: no changes
Dec 11 19:41:46.696 INFO [stderr]     Checking advent-of-code-2018 v0.1.0 (/source)
Dec 11 19:41:47.116 INFO [stderr] warning: function is never used: `char_difference`
Dec 11 19:41:47.117 INFO [stderr]    --> src/main.rs:118:1
Dec 11 19:41:47.117 INFO [stderr]     |
Dec 11 19:41:47.117 INFO [stderr] 118 | fn char_difference(word1 : &String, word2 : &String) -> bool {
Dec 11 19:41:47.117 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:41:47.118 INFO [stderr]     |
Dec 11 19:41:47.118 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 11 19:41:47.118 INFO [stderr] 
Dec 11 19:41:47.119 INFO [stderr] warning: function is never used: `get_letter_counts`
Dec 11 19:41:47.119 INFO [stderr]    --> src/main.rs:158:1
Dec 11 19:41:47.119 INFO [stderr]     |
Dec 11 19:41:47.119 INFO [stderr] 158 | fn get_letter_counts(word: &str) -> HashMap<char, i32> {
Dec 11 19:41:47.120 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:41:47.120 INFO [stderr] 
Dec 11 19:41:47.554 INFO [stderr] warning: function is never used: `char_difference`
Dec 11 19:41:47.554 INFO [stderr]    --> src/main.rs:118:1
Dec 11 19:41:47.554 INFO [stderr]     |
Dec 11 19:41:47.555 INFO [stderr] 118 | fn char_difference(word1 : &String, word2 : &String) -> bool {
Dec 11 19:41:47.555 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:41:47.555 INFO [stderr]     |
Dec 11 19:41:47.556 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 11 19:41:47.556 INFO [stderr] 
Dec 11 19:41:47.556 INFO [stderr] warning: function is never used: `get_letter_counts`
Dec 11 19:41:47.556 INFO [stderr]    --> src/main.rs:158:1
Dec 11 19:41:47.556 INFO [stderr]     |
Dec 11 19:41:47.557 INFO [stderr] 158 | fn get_letter_counts(word: &str) -> HashMap<char, i32> {
Dec 11 19:41:47.557 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:41:47.557 INFO [stderr] 
Dec 11 19:41:47.601 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
Dec 11 19:41:47.603 INFO [stderr] su: No module specific data is present
Dec 11 19:41:48.793 INFO running `"docker" "inspect" "0b936c1267b3b7d069c2a248f06584cb933e9189bd8f7e1107f209d6631ca52f"`
Dec 11 19:41:49.116 INFO running `"docker" "rm" "-f" "0b936c1267b3b7d069c2a248f06584cb933e9189bd8f7e1107f209d6631ca52f"`
Dec 11 19:41:49.464 INFO [stdout] 0b936c1267b3b7d069c2a248f06584cb933e9189bd8f7e1107f209d6631ca52f