Dec 18 01:22:47.959 INFO checking dhartunian/advent-of-code-2018 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 01:22:47.959 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/dhartunian/advent-of-code-2018:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 01:22:48.407 INFO [stdout] caf45da46665abf8653153baea2ccf49208be540ef1b16d153e436c5dca6dfac
Dec 18 01:22:48.409 INFO running `"docker" "start" "-a" "caf45da46665abf8653153baea2ccf49208be540ef1b16d153e436c5dca6dfac"`
Dec 18 01:22:49.617 INFO [stderr]     Checking advent-of-code-2018 v0.1.0 (/opt/crater/workdir)
Dec 18 01:22:49.989 INFO [stderr] warning: function is never used: `char_difference`
Dec 18 01:22:49.989 INFO [stderr]    --> src/main.rs:118:1
Dec 18 01:22:49.989 INFO [stderr]     |
Dec 18 01:22:49.989 INFO [stderr] 118 | fn char_difference(word1 : &String, word2 : &String) -> bool {
Dec 18 01:22:49.989 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:22:49.989 INFO [stderr]     |
Dec 18 01:22:49.989 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 01:22:49.989 INFO [stderr] 
Dec 18 01:22:49.989 INFO [stderr] warning: function is never used: `get_letter_counts`
Dec 18 01:22:49.989 INFO [stderr]    --> src/main.rs:158:1
Dec 18 01:22:49.989 INFO [stderr]     |
Dec 18 01:22:49.989 INFO [stderr] 158 | fn get_letter_counts(word: &str) -> HashMap<char, i32> {
Dec 18 01:22:49.989 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:22:49.989 INFO [stderr] 
Dec 18 01:22:50.078 INFO [stderr] warning: function is never used: `char_difference`
Dec 18 01:22:50.078 INFO [stderr]    --> src/main.rs:118:1
Dec 18 01:22:50.079 INFO [stderr]     |
Dec 18 01:22:50.079 INFO [stderr] 118 | fn char_difference(word1 : &String, word2 : &String) -> bool {
Dec 18 01:22:50.079 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:22:50.080 INFO [stderr]     |
Dec 18 01:22:50.080 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 01:22:50.080 INFO [stderr] 
Dec 18 01:22:50.081 INFO [stderr] warning: function is never used: `get_letter_counts`
Dec 18 01:22:50.081 INFO [stderr]    --> src/main.rs:158:1
Dec 18 01:22:50.081 INFO [stderr]     |
Dec 18 01:22:50.082 INFO [stderr] 158 | fn get_letter_counts(word: &str) -> HashMap<char, i32> {
Dec 18 01:22:50.082 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:22:50.082 INFO [stderr] 
Dec 18 01:22:50.098 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
Dec 18 01:22:50.559 INFO running `"docker" "inspect" "caf45da46665abf8653153baea2ccf49208be540ef1b16d153e436c5dca6dfac"`
Dec 18 01:22:50.710 INFO running `"docker" "rm" "-f" "caf45da46665abf8653153baea2ccf49208be540ef1b16d153e436c5dca6dfac"`
Dec 18 01:22:50.852 INFO [stdout] caf45da46665abf8653153baea2ccf49208be540ef1b16d153e436c5dca6dfac