[INFO] updating cached repository https://github.com/sts10/advent-of-code-2018
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 749149d5dd3fec7f50af6c186c64fae199e3643b
[INFO] checking sts10/advent-of-code-2018 against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsts10%2Fadvent-of-code-2018" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sts10/advent-of-code-2018 on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/sts10/advent-of-code-2018
[INFO] finished tweaking git repo https://github.com/sts10/advent-of-code-2018
[INFO] tweaked toml for git repo https://github.com/sts10/advent-of-code-2018 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/sts10/advent-of-code-2018 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] abab2985c5123d7bb51a09ed82078e5f4256f146020177485a18a4c8ab58f9f7
[INFO] running `"docker" "start" "-a" "abab2985c5123d7bb51a09ed82078e5f4256f146020177485a18a4c8ab58f9f7"`
[INFO] [stderr]     Checking advent-of-code-2018-reorganized v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable `the_char_to_remove_that_resulted_in_shortest_polymer_result` is assigned to, but never used
[INFO] [stderr]   --> src/bin/my_slow_day05.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut the_char_to_remove_that_resulted_in_shortest_polymer_result: char;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_the_char_to_remove_that_resulted_in_shortest_polymer_result` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `the_char_to_remove_that_resulted_in_shortest_polymer_result` is never read
[INFO] [stderr]   --> src/bin/my_slow_day05.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             the_char_to_remove_that_resulted_in_shortest_polymer_result = *char_to_remove;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `indexes_to_remove`
[INFO] [stderr]   --> src/bin/my_slow_day05.rs:60:17
[INFO] [stderr]    |
[INFO] [stderr] 60 |         let mut indexes_to_remove: Vec<usize> = vec![];
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_indexes_to_remove`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/my_slow_day05.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 |         let mut indexes_to_remove: Vec<usize> = vec![];
[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] error[E0308]: mismatched types
[INFO] [stderr]   --> src/bin/day01.rs:76:27
[INFO] [stderr]    |
[INFO] [stderr] 76 |     assert_eq!(sum_vector(test_vector), (3 + -7 + 200 + 13 + -123));
[INFO] [stderr]    |                           ^^^^^^^^^^^
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           expected `&[isize]`, found struct `std::vec::Vec`
[INFO] [stderr]    |                           help: consider borrowing here: `&test_vector`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected reference `&[isize]`
[INFO] [stderr]                  found struct `std::vec::Vec<isize>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_grid`
[INFO] [stderr]   --> src/bin/day06.rs:32:21
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 let new_grid = spread(x, y, grid);
[INFO] [stderr]    |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_grid`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `square` is never read
[INFO] [stderr]   --> src/bin/day06.rs:51:20
[INFO] [stderr]    |
[INFO] [stderr] 51 |             "." => square = sign,
[INFO] [stderr]    |                    ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error[E0384]: cannot assign twice to immutable variable `square`
[INFO] [stderr]   --> src/bin/day06.rs:51:20
[INFO] [stderr]    |
[INFO] [stderr] 49 |     for square in nine_squares {
[INFO] [stderr]    |         ------
[INFO] [stderr]    |         |
[INFO] [stderr]    |         first assignment to `square`
[INFO] [stderr]    |         help: make this binding mutable: `mut square`
[INFO] [stderr] 50 |         match square {
[INFO] [stderr] 51 |             "." => square = sign,
[INFO] [stderr]    |                    ^^^^^^^^^^^^^ cannot assign twice to immutable variable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0384`.
[INFO] [stderr] error: could not compile `advent-of-code-2018-reorganized`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `advent-of-code-2018-reorganized`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: variable `the_char_to_remove_that_resulted_in_shortest_polymer_result` is assigned to, but never used
[INFO] [stderr]   --> src/bin/my_slow_day05.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut the_char_to_remove_that_resulted_in_shortest_polymer_result: char;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_the_char_to_remove_that_resulted_in_shortest_polymer_result` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `the_char_to_remove_that_resulted_in_shortest_polymer_result` is never read
[INFO] [stderr]   --> src/bin/my_slow_day05.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             the_char_to_remove_that_resulted_in_shortest_polymer_result = *char_to_remove;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `indexes_to_remove`
[INFO] [stderr]   --> src/bin/my_slow_day05.rs:60:17
[INFO] [stderr]    |
[INFO] [stderr] 60 |         let mut indexes_to_remove: Vec<usize> = vec![];
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_indexes_to_remove`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/my_slow_day05.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 |         let mut indexes_to_remove: Vec<usize> = vec![];
[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: unused variable: `guards`
[INFO] [stderr]   --> src/bin/day04_bad_attempt.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let mut guards: HashMap<usize, Guard> = HashMap::new();
[INFO] [stderr]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_guards`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/day04_bad_attempt.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let mut guards: HashMap<usize, Guard> = HashMap::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: unused variable: `new_grid`
[INFO] [stderr]   --> src/bin/day06.rs:32:21
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 let new_grid = spread(x, y, grid);
[INFO] [stderr]    |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_grid`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `square` is never read
[INFO] [stderr]   --> src/bin/day06.rs:51:20
[INFO] [stderr]    |
[INFO] [stderr] 51 |             "." => square = sign,
[INFO] [stderr]    |                    ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] error[E0384]: cannot assign twice to immutable variable `square`
[INFO] [stderr]   --> src/bin/day06.rs:51:20
[INFO] [stderr]    |
[INFO] [stderr] 49 |     for square in nine_squares {
[INFO] [stderr]    |         ------
[INFO] [stderr]    |         |
[INFO] [stderr]    |         first assignment to `square`
[INFO] [stderr]    |         help: make this binding mutable: `mut square`
[INFO] [stderr] 50 |         match square {
[INFO] [stderr] 51 |             "." => square = sign,
[INFO] [stderr]    |                    ^^^^^^^^^^^^^ cannot assign twice to immutable variable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0384`.
[INFO] [stderr] error: could not compile `advent-of-code-2018-reorganized`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "abab2985c5123d7bb51a09ed82078e5f4256f146020177485a18a4c8ab58f9f7"`
[INFO] running `"docker" "rm" "-f" "abab2985c5123d7bb51a09ed82078e5f4256f146020177485a18a4c8ab58f9f7"`
[INFO] [stdout] abab2985c5123d7bb51a09ed82078e5f4256f146020177485a18a4c8ab58f9f7
