[INFO] updating cached repository dhartunian/advent-of-code-2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dhartunian/advent-of-code-2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dhartunian/advent-of-code-2018" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/dhartunian/advent-of-code-2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/dhartunian/advent-of-code-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dhartunian/advent-of-code-2018" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/dhartunian/advent-of-code-2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/dhartunian/advent-of-code-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d363a0f1893e363a84667c3dcea32459954dfbfb
[INFO] sha for GitHub repo dhartunian/advent-of-code-2018: d363a0f1893e363a84667c3dcea32459954dfbfb
[INFO] validating manifest of dhartunian/advent-of-code-2018 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dhartunian/advent-of-code-2018 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dhartunian/advent-of-code-2018
[INFO] finished frobbing dhartunian/advent-of-code-2018
[INFO] frobbed toml for dhartunian/advent-of-code-2018 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/dhartunian/advent-of-code-2018/Cargo.toml
[INFO] started frobbing dhartunian/advent-of-code-2018
[INFO] finished frobbing dhartunian/advent-of-code-2018
[INFO] frobbed toml for dhartunian/advent-of-code-2018 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/dhartunian/advent-of-code-2018/Cargo.toml
[INFO] crate dhartunian/advent-of-code-2018 has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing dhartunian/advent-of-code-2018 against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] af4b3d20141005523b8fc34163200a6b88845abd709ce059564325091e0ae0c8
[INFO] running `"docker" "start" "-a" "af4b3d20141005523b8fc34163200a6b88845abd709ce059564325091e0ae0c8"`
[INFO] [stderr]    Compiling advent-of-code-2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `char_difference`
[INFO] [stderr]    --> src/main.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | fn char_difference(word1 : &String, word2 : &String) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_letter_counts`
[INFO] [stderr]    --> src/main.rs:158:1
[INFO] [stderr]     |
[INFO] [stderr] 158 | fn get_letter_counts(word: &str) -> HashMap<char, i32> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `"docker" "inspect" "af4b3d20141005523b8fc34163200a6b88845abd709ce059564325091e0ae0c8"`
[INFO] running `"docker" "rm" "-f" "af4b3d20141005523b8fc34163200a6b88845abd709ce059564325091e0ae0c8"`
[INFO] [stdout] af4b3d20141005523b8fc34163200a6b88845abd709ce059564325091e0ae0c8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 626b923e34bd4a74bb6f0fef5dbf4931d3a1df194a4e00809d56f2da0caf7474
[INFO] running `"docker" "start" "-a" "626b923e34bd4a74bb6f0fef5dbf4931d3a1df194a4e00809d56f2da0caf7474"`
[INFO] [stderr]    Compiling advent-of-code-2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `char_difference`
[INFO] [stderr]    --> src/main.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | fn char_difference(word1 : &String, word2 : &String) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_letter_counts`
[INFO] [stderr]    --> src/main.rs:158:1
[INFO] [stderr]     |
[INFO] [stderr] 158 | fn get_letter_counts(word: &str) -> HashMap<char, i32> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "626b923e34bd4a74bb6f0fef5dbf4931d3a1df194a4e00809d56f2da0caf7474"`
[INFO] running `"docker" "rm" "-f" "626b923e34bd4a74bb6f0fef5dbf4931d3a1df194a4e00809d56f2da0caf7474"`
[INFO] [stdout] 626b923e34bd4a74bb6f0fef5dbf4931d3a1df194a4e00809d56f2da0caf7474
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 2e212acc2fd263f2c689f2cad0ee4d89b385cd98b9884f4d53cd79faaf54581e
[INFO] running `"docker" "start" "-a" "2e212acc2fd263f2c689f2cad0ee4d89b385cd98b9884f4d53cd79faaf54581e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/advent_of_code_2018-2e765a079dd0eebc
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2e212acc2fd263f2c689f2cad0ee4d89b385cd98b9884f4d53cd79faaf54581e"`
[INFO] running `"docker" "rm" "-f" "2e212acc2fd263f2c689f2cad0ee4d89b385cd98b9884f4d53cd79faaf54581e"`
[INFO] [stdout] 2e212acc2fd263f2c689f2cad0ee4d89b385cd98b9884f4d53cd79faaf54581e