[INFO] updating cached repository seeba8/advent_of_code_2017
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/seeba8/advent_of_code_2017
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/seeba8/advent_of_code_2017" "work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/seeba8/advent_of_code_2017"`
[INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/seeba8/advent_of_code_2017'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/seeba8/advent_of_code_2017" "work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/seeba8/advent_of_code_2017"`
[INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/seeba8/advent_of_code_2017'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c67ade26c6623ed42585f43e11b74b1bf659ebad
[INFO] sha for GitHub repo seeba8/advent_of_code_2017: c67ade26c6623ed42585f43e11b74b1bf659ebad
[INFO] validating manifest of seeba8/advent_of_code_2017 on toolchain master#6ea4036cd20a4b1ab1d56e555108c21735ff6946
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of seeba8/advent_of_code_2017 on toolchain try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing seeba8/advent_of_code_2017
[INFO] finished frobbing seeba8/advent_of_code_2017
[INFO] frobbed toml for seeba8/advent_of_code_2017 written to work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/seeba8/advent_of_code_2017/Cargo.toml
[INFO] started frobbing seeba8/advent_of_code_2017
[INFO] finished frobbing seeba8/advent_of_code_2017
[INFO] frobbed toml for seeba8/advent_of_code_2017 written to work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/seeba8/advent_of_code_2017/Cargo.toml
[INFO] crate seeba8/advent_of_code_2017 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking seeba8/advent_of_code_2017 against try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc for pr-62181
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62181/worker-3/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/seeba8/advent_of_code_2017:/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" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 742a5fbf88f45f3e1dbb8223d23002a1a8ec01dfa3fd670f311e5da24e87cf4f
[INFO] running `"docker" "start" "-a" "742a5fbf88f45f3e1dbb8223d23002a1a8ec01dfa3fd670f311e5da24e87cf4f"`
[INFO] [stderr]     Checking advent_of_code_2017 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `start`
[INFO] [stderr]  --> src/day1.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn start() -> std::io::Result<()> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_duplicate_halfway`
[INFO] [stderr]   --> src/day1.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn sum_duplicate_halfway(input: &str) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_duplicate_neighbours`
[INFO] [stderr]   --> src/day1.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub fn sum_duplicate_neighbours(input: &str) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `start`
[INFO] [stderr]  --> src/day1.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn start() -> std::io::Result<()> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "742a5fbf88f45f3e1dbb8223d23002a1a8ec01dfa3fd670f311e5da24e87cf4f"`
[INFO] running `"docker" "rm" "-f" "742a5fbf88f45f3e1dbb8223d23002a1a8ec01dfa3fd670f311e5da24e87cf4f"`
[INFO] [stdout] 742a5fbf88f45f3e1dbb8223d23002a1a8ec01dfa3fd670f311e5da24e87cf4f