[INFO] updating cached repository tahnok/advent2016
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tahnok/advent2016
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tahnok/advent2016" "work/ex/beta-1.37-6/sources/1.36.0/gh/tahnok/advent2016"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/tahnok/advent2016'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tahnok/advent2016" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/tahnok/advent2016"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/tahnok/advent2016'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cc6fadfe65f9f9fda4ec1c7f84b30ad2f94ae724
[INFO] sha for GitHub repo tahnok/advent2016: cc6fadfe65f9f9fda4ec1c7f84b30ad2f94ae724
[INFO] validating manifest of tahnok/advent2016 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tahnok/advent2016 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tahnok/advent2016
[INFO] finished frobbing tahnok/advent2016
[INFO] frobbed toml for tahnok/advent2016 written to work/ex/beta-1.37-6/sources/1.36.0/gh/tahnok/advent2016/Cargo.toml
[INFO] started frobbing tahnok/advent2016
[INFO] finished frobbing tahnok/advent2016
[INFO] frobbed toml for tahnok/advent2016 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/tahnok/advent2016/Cargo.toml
[INFO] crate tahnok/advent2016 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing tahnok/advent2016 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/tahnok/advent2016:/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] d7e4f1ab90a7d9a5716691388dd6decec28139d7a6bddc7bd7de890352260b2e
[INFO] running `"docker" "start" "-a" "d7e4f1ab90a7d9a5716691388dd6decec28139d7a6bddc7bd7de890352260b2e"`
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling advent2016 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/bin/day9_1.rs:25:37
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut parts = input.splitn(3, (|c| c == '(' || c == ')'));
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sum_valid`
[INFO] [stderr]   --> src/bin/day4_2.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     fn sum_valid(codes: Vec<&str>) -> u32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/bin/day20_2.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn new(start: usize, end: usize) -> Range {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `day11_1`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `src/bin/day11_1.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 `advent2016`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d7e4f1ab90a7d9a5716691388dd6decec28139d7a6bddc7bd7de890352260b2e"`
[INFO] running `"docker" "rm" "-f" "d7e4f1ab90a7d9a5716691388dd6decec28139d7a6bddc7bd7de890352260b2e"`
[INFO] [stdout] d7e4f1ab90a7d9a5716691388dd6decec28139d7a6bddc7bd7de890352260b2e