[INFO] updating cached repository prmejc/AdventOfCode2016
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/prmejc/AdventOfCode2016
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/prmejc/AdventOfCode2016" "work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/prmejc/AdventOfCode2016"`
[INFO] [stderr] Cloning into 'work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/prmejc/AdventOfCode2016'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/prmejc/AdventOfCode2016" "work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/gh/prmejc/AdventOfCode2016"`
[INFO] [stderr] Cloning into 'work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/gh/prmejc/AdventOfCode2016'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5d2e234183a18b10b1e47e2ab22f4ae6cfc6253f
[INFO] sha for GitHub repo prmejc/AdventOfCode2016: 5d2e234183a18b10b1e47e2ab22f4ae6cfc6253f
[INFO] validating manifest of prmejc/AdventOfCode2016 on toolchain master#2bde39b8edce6463e1c37f8a8082a875e7b536b1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of prmejc/AdventOfCode2016 on toolchain try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0d8b5d1f16bab9e975695518ff8705bdab9fe94c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing prmejc/AdventOfCode2016
[INFO] finished frobbing prmejc/AdventOfCode2016
[INFO] frobbed toml for prmejc/AdventOfCode2016 written to work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/prmejc/AdventOfCode2016/Cargo.toml
[INFO] started frobbing prmejc/AdventOfCode2016
[INFO] finished frobbing prmejc/AdventOfCode2016
[INFO] frobbed toml for prmejc/AdventOfCode2016 written to work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/gh/prmejc/AdventOfCode2016/Cargo.toml
[INFO] crate prmejc/AdventOfCode2016 has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0d8b5d1f16bab9e975695518ff8705bdab9fe94c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking prmejc/AdventOfCode2016 against master#2bde39b8edce6463e1c37f8a8082a875e7b536b1 for pr-57483
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57483/worker-1/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/prmejc/AdventOfCode2016:/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" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 84832edbc838db64cb51d7bf1f7f3b3eae7554b4a8d02615bf9136180b693c0f
[INFO] running `"docker" "start" "-a" "84832edbc838db64cb51d7bf1f7f3b3eae7554b4a8d02615bf9136180b693c0f"`
[INFO] [stderr]     Checking advent2016 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `checksum`
[INFO] [stderr]   --> src/day4.rs:33:7
[INFO] [stderr]    |
[INFO] [stderr] 33 |   let checksum = room.split("[").last().unwrap().replace("]","");
[INFO] [stderr]    |       ^^^^^^^^ help: consider using `_checksum` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `checksum`
[INFO] [stderr]   --> src/day4.rs:33:7
[INFO] [stderr]    |
[INFO] [stderr] 33 |   let checksum = room.split("[").last().unwrap().replace("]","");
[INFO] [stderr]    |       ^^^^^^^^ help: consider using `_checksum` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `part1`
[INFO] [stderr]  --> src/day4.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn part1(){
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_a_room`
[INFO] [stderr]   --> src/day4.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn is_a_room(room: &str) -> (bool, i32) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `part1`
[INFO] [stderr]  --> src/day4.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn part1(){
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_a_room`
[INFO] [stderr]   --> src/day4.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn is_a_room(room: &str) -> (bool, i32) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `"docker" "inspect" "84832edbc838db64cb51d7bf1f7f3b3eae7554b4a8d02615bf9136180b693c0f"`
[INFO] running `"docker" "rm" "-f" "84832edbc838db64cb51d7bf1f7f3b3eae7554b4a8d02615bf9136180b693c0f"`
[INFO] [stdout] 84832edbc838db64cb51d7bf1f7f3b3eae7554b4a8d02615bf9136180b693c0f