[INFO] updating cached repository https://github.com/tahnok/advent2018
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6a2ad81a69efaeff50789257718686fa8d575216
[INFO] testing tahnok/advent2018 against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftahnok%2Fadvent2018" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tahnok/advent2018 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tahnok/advent2018
[INFO] finished tweaking git repo https://github.com/tahnok/advent2018
[INFO] tweaked toml for git repo https://github.com/tahnok/advent2018 written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/tahnok/advent2018 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 985f0916bd42e6258eb0f614db5424f97eb44b93d4c88ac9ff3339dfef4b54de
[INFO] running `"docker" "start" "-a" "985f0916bd42e6258eb0f614db5424f97eb44b93d4c88ac9ff3339dfef4b54de"`
[INFO] [stderr]    Compiling unindent v0.1.3
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling proc-macro-hack v0.5.3
[INFO] [stderr]    Compiling indoc-impl v0.3.1
[INFO] [stderr]    Compiling indoc v0.3.1
[INFO] [stderr]    Compiling advent2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `utils`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `src/bin/utils.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: Could not compile `advent2018`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `indoc::indoc`
[INFO] [stderr]  --> src/bin/day_07_2.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use indoc::indoc;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `indoc::indoc`
[INFO] [stderr]  --> src/bin/day_07_1.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use indoc::indoc;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/day_07_2.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |         let mut dependencies = result.entry(required_by).or_insert(HashSet::new());
[INFO] [stderr]    |             ----^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/day_07_1.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |         let mut dependencies = result.entry(required_by).or_insert(HashSet::new());
[INFO] [stderr]    |             ----^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/day_04_2.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let mut times = guards_and_times.get_mut(&id).unwrap();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `guard` should have an upper case name
[INFO] [stderr]   --> src/bin/day_04_2.rs:11:20
[INFO] [stderr]    |
[INFO] [stderr] 11 |         static ref guard: Regex = Regex::new(r"#(\d+)").unwrap();
[INFO] [stderr]    |                    ^^^^^ help: convert the identifier to upper case: `GUARD`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `time` should have an upper case name
[INFO] [stderr]   --> src/bin/day_04_2.rs:66:20
[INFO] [stderr]    |
[INFO] [stderr] 66 |         static ref time: Regex = Regex::new(r"(\d+):(\d+)\]").unwrap();
[INFO] [stderr]    |                    ^^^^ help: convert the identifier to upper case: `TIME`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/day_04_1.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |         let mut times = guards_and_times.get_mut(&id).unwrap();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `guard` should have an upper case name
[INFO] [stderr]   --> src/bin/day_04_1.rs:11:20
[INFO] [stderr]    |
[INFO] [stderr] 11 |         static ref guard: Regex = Regex::new(r"#(\d+)").unwrap();
[INFO] [stderr]    |                    ^^^^^ help: convert the identifier to upper case: `GUARD`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `time` should have an upper case name
[INFO] [stderr]   --> src/bin/day_04_1.rs:76:20
[INFO] [stderr]    |
[INFO] [stderr] 76 |         static ref time: Regex = Regex::new(r"(\d+):(\d+)\]").unwrap();
[INFO] [stderr]    |                    ^^^^ help: convert the identifier to upper case: `TIME`
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "985f0916bd42e6258eb0f614db5424f97eb44b93d4c88ac9ff3339dfef4b54de"`
[INFO] running `"docker" "rm" "-f" "985f0916bd42e6258eb0f614db5424f97eb44b93d4c88ac9ff3339dfef4b54de"`
[INFO] [stdout] 985f0916bd42e6258eb0f614db5424f97eb44b93d4c88ac9ff3339dfef4b54de