Dec 11 19:41:49.539 INFO checking dhartunian/advent-of-code-2018 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 19:41:49.539 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 19:41:50.044 INFO [stdout] 00fdd6858c132657ecb4667a07b460b1a2f0b681117060467e05b722fbf4855b
Dec 11 19:41:50.046 INFO running `"docker" "start" "-a" "00fdd6858c132657ecb4667a07b460b1a2f0b681117060467e05b722fbf4855b"`
Dec 11 19:41:51.356 INFO [stderr] usermod: no changes
Dec 11 19:41:51.408 INFO [stderr]     Checking advent-of-code-2018 v0.1.0 (/source)
Dec 11 19:41:52.233 INFO [stderr] warning: function is never used: `char_difference`
Dec 11 19:41:52.233 INFO [stderr]    --> src/main.rs:118:1
Dec 11 19:41:52.233 INFO [stderr]     |
Dec 11 19:41:52.233 INFO [stderr] 118 | fn char_difference(word1 : &String, word2 : &String) -> bool {
Dec 11 19:41:52.233 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:41:52.233 INFO [stderr]     |
Dec 11 19:41:52.233 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 11 19:41:52.233 INFO [stderr] 
Dec 11 19:41:52.233 INFO [stderr] warning: function is never used: `get_letter_counts`
Dec 11 19:41:52.233 INFO [stderr]    --> src/main.rs:158:1
Dec 11 19:41:52.233 INFO [stderr]     |
Dec 11 19:41:52.233 INFO [stderr] 158 | fn get_letter_counts(word: &str) -> HashMap<char, i32> {
Dec 11 19:41:52.233 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:41:52.233 INFO [stderr] 
Dec 11 19:41:52.260 INFO [stderr] warning: function is never used: `char_difference`
Dec 11 19:41:52.261 INFO [stderr]    --> src/main.rs:118:1
Dec 11 19:41:52.261 INFO [stderr]     |
Dec 11 19:41:52.261 INFO [stderr] 118 | fn char_difference(word1 : &String, word2 : &String) -> bool {
Dec 11 19:41:52.261 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:41:52.261 INFO [stderr]     |
Dec 11 19:41:52.261 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 11 19:41:52.261 INFO [stderr] 
Dec 11 19:41:52.262 INFO [stderr] warning: function is never used: `get_letter_counts`
Dec 11 19:41:52.262 INFO [stderr]    --> src/main.rs:158:1
Dec 11 19:41:52.262 INFO [stderr]     |
Dec 11 19:41:52.262 INFO [stderr] 158 | fn get_letter_counts(word: &str) -> HashMap<char, i32> {
Dec 11 19:41:52.262 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:41:52.263 INFO [stderr] 
Dec 11 19:41:52.285 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
Dec 11 19:41:52.286 INFO [stderr] su: No module specific data is present
Dec 11 19:41:53.366 INFO running `"docker" "inspect" "00fdd6858c132657ecb4667a07b460b1a2f0b681117060467e05b722fbf4855b"`
Dec 11 19:41:53.596 INFO running `"docker" "rm" "-f" "00fdd6858c132657ecb4667a07b460b1a2f0b681117060467e05b722fbf4855b"`
Dec 11 19:41:53.736 INFO [stdout] 00fdd6858c132657ecb4667a07b460b1a2f0b681117060467e05b722fbf4855b