[INFO] updating cached repository https://github.com/sts10/advent-of-code-2018 [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] 749149d5dd3fec7f50af6c186c64fae199e3643b [INFO] testing sts10/advent-of-code-2018 against beta-2019-09-28 for beta-1.39-1 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsts10%2Fadvent-of-code-2018" "work/builds/worker-5/source"` [INFO] [stderr] Cloning into 'work/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sts10/advent-of-code-2018 on toolchain beta-2019-09-28 [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "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 work/builds/worker-5/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 `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/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" "+beta-2019-09-28" "build" "--frozen"` [INFO] [stdout] f866d1843f6b83e07b332fcd7afad41fa06d9ef2f1006d590bb10c86d2ffbaf4 [INFO] running `"docker" "start" "-a" "f866d1843f6b83e07b332fcd7afad41fa06d9ef2f1006d590bb10c86d2ffbaf4"` [INFO] [stderr] Compiling chrono v0.4.6 [INFO] [stderr] Compiling advent-of-code-2018-reorganized v0.1.0 (/opt/rustwide/workdir) [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: consider prefixing 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] 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] 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] = 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 = vec![]; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_indexes_to_remove` [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] 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 = 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: could not compile `advent-of-code-2018-reorganized`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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 = HashMap::new(); [INFO] [stderr] | ^^^^^^ help: consider prefixing 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 = 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] error: build failed [INFO] running `"docker" "inspect" "f866d1843f6b83e07b332fcd7afad41fa06d9ef2f1006d590bb10c86d2ffbaf4"` [INFO] running `"docker" "rm" "-f" "f866d1843f6b83e07b332fcd7afad41fa06d9ef2f1006d590bb10c86d2ffbaf4"` [INFO] [stdout] f866d1843f6b83e07b332fcd7afad41fa06d9ef2f1006d590bb10c86d2ffbaf4