[INFO] updating cached repository jimblandy/advent-of-code-2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jimblandy/advent-of-code-2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jimblandy/advent-of-code-2018" "work/ex/clippy-test-run/sources/stable/gh/jimblandy/advent-of-code-2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/jimblandy/advent-of-code-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jimblandy/advent-of-code-2018" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jimblandy/advent-of-code-2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jimblandy/advent-of-code-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 41de84e15d1173222efc75499e25d82128095898
[INFO] sha for GitHub repo jimblandy/advent-of-code-2018: 41de84e15d1173222efc75499e25d82128095898
[INFO] validating manifest of jimblandy/advent-of-code-2018 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jimblandy/advent-of-code-2018 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jimblandy/advent-of-code-2018
[INFO] finished frobbing jimblandy/advent-of-code-2018
[INFO] frobbed toml for jimblandy/advent-of-code-2018 written to work/ex/clippy-test-run/sources/stable/gh/jimblandy/advent-of-code-2018/Cargo.toml
[INFO] started frobbing jimblandy/advent-of-code-2018
[INFO] finished frobbing jimblandy/advent-of-code-2018
[INFO] frobbed toml for jimblandy/advent-of-code-2018 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/jimblandy/advent-of-code-2018/Cargo.toml
[INFO] crate jimblandy/advent-of-code-2018 has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting jimblandy/advent-of-code-2018 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/jimblandy/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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8651a46ac545b1b5295e4edca529eff0116fa00348acd966458fa4c95da1818c
[INFO] running `"docker" "start" "-a" "8651a46ac545b1b5295e4edca529eff0116fa00348acd966458fa4c95da1818c"`
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking advent-of-code-2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/bin/day-09.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(euclidean_division)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `advent-of-code-2018`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stderr]   --> src/bin/day-02a.rs:23:16
[INFO] [stderr]    |
[INFO] [stderr] 23 |           if let Some(_) = h.get(&2) {
[INFO] [stderr]    |  _________-      ^^^^^^^
[INFO] [stderr] 24 | |             twos += 1;
[INFO] [stderr] 25 | |         }
[INFO] [stderr]    | |_________- help: try this: `if h.get(&2).is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stderr]   --> src/bin/day-02a.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 |           if let Some(_) = h.get(&3) {
[INFO] [stderr]    |  _________-      ^^^^^^^
[INFO] [stderr] 27 | |             threes += 1;
[INFO] [stderr] 28 | |         }
[INFO] [stderr]    | |_________- help: try this: `if h.get(&3).is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `root`
[INFO] [stderr]    --> src/bin/day-08.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |     let root = parse(&mut summer, &mut numbers.iter().cloned());
[INFO] [stderr]     |         ^^^^ help: consider using `_root` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/bin/day-06.rs:31:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |                 NEW => '*',
[INFO] [stderr]    |                 --- matches any value
[INFO] [stderr] 31 |                 TIE => '.',
[INFO] [stderr]    |                 ^^^ unreachable pattern
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/bin/day-06.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |                 NEW => '*',
[INFO] [stderr]    |                 --- matches any value
[INFO] [stderr] 31 |                 TIE => '.',
[INFO] [stderr] 32 |                 n => (b'a' + (n as u8) % 26) as char
[INFO] [stderr]    |                 ^ unreachable pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `NEW`
[INFO] [stderr]   --> src/bin/day-06.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |                 NEW => '*',
[INFO] [stderr]    |                 ^^^ help: consider using `_NEW` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `NEW` should have a snake case name such as `new`
[INFO] [stderr]   --> src/bin/day-06.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 |                 NEW => '*',
[INFO] [stderr]    |                 ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "8651a46ac545b1b5295e4edca529eff0116fa00348acd966458fa4c95da1818c"`
[INFO] running `"docker" "rm" "-f" "8651a46ac545b1b5295e4edca529eff0116fa00348acd966458fa4c95da1818c"`
[INFO] [stdout] 8651a46ac545b1b5295e4edca529eff0116fa00348acd966458fa4c95da1818c