Dec 17 14:33:26.397 INFO checking sts10/advent-of-code-2018 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 14:33:26.397 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/sts10/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 14:33:26.852 INFO [stdout] 817a7353e6dfb06e324d09d4e7e60ad3edd806321e23e5f564e43d089e8d4ca8
Dec 17 14:33:26.858 INFO running `"docker" "start" "-a" "817a7353e6dfb06e324d09d4e7e60ad3edd806321e23e5f564e43d089e8d4ca8"`
Dec 17 14:33:28.120 INFO [stderr]     Checking advent-of-code-2018-reorganized v0.1.0 (/opt/crater/workdir)
Dec 17 14:33:28.809 INFO [stderr] warning: variable `the_char_to_remove_that_resulted_in_shortest_polymer_result` is assigned to, but never used
Dec 17 14:33:28.809 INFO [stderr]   --> src/bin/my_slow_day05.rs:19:13
Dec 17 14:33:28.809 INFO [stderr]    |
Dec 17 14:33:28.809 INFO [stderr] 19 |     let mut the_char_to_remove_that_resulted_in_shortest_polymer_result: char;
Dec 17 14:33:28.809 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:33:28.809 INFO [stderr]    |
Dec 17 14:33:28.809 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 14:33:28.809 INFO [stderr]    = note: consider using `_the_char_to_remove_that_resulted_in_shortest_polymer_result` instead
Dec 17 14:33:28.809 INFO [stderr] 
Dec 17 14:33:28.809 INFO [stderr] warning: value assigned to `the_char_to_remove_that_resulted_in_shortest_polymer_result` is never read
Dec 17 14:33:28.809 INFO [stderr]   --> src/bin/my_slow_day05.rs:45:13
Dec 17 14:33:28.809 INFO [stderr]    |
Dec 17 14:33:28.809 INFO [stderr] 45 |             the_char_to_remove_that_resulted_in_shortest_polymer_result = *char_to_remove;
Dec 17 14:33:28.809 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:33:28.809 INFO [stderr]    |
Dec 17 14:33:28.809 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 17 14:33:28.809 INFO [stderr] 
Dec 17 14:33:28.809 INFO [stderr] warning: unused variable: `indexes_to_remove`
Dec 17 14:33:28.809 INFO [stderr]   --> src/bin/my_slow_day05.rs:60:17
Dec 17 14:33:28.809 INFO [stderr]    |
Dec 17 14:33:28.809 INFO [stderr] 60 |         let mut indexes_to_remove: Vec<usize> = vec![];
Dec 17 14:33:28.809 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^ help: consider using `_indexes_to_remove` instead
Dec 17 14:33:28.809 INFO [stderr] 
Dec 17 14:33:28.865 INFO [stderr] warning: function `returns_None_if_more_than_one_character_off` should have a snake case name such as `returns_none_if_more_than_one_character_off`
Dec 17 14:33:28.865 INFO [stderr]    --> src/bin/day02.rs:144:1
Dec 17 14:33:28.865 INFO [stderr]     |
Dec 17 14:33:28.865 INFO [stderr] 144 | / fn returns_None_if_more_than_one_character_off() {
Dec 17 14:33:28.865 INFO [stderr] 145 | |     let a = "abcdefg";
Dec 17 14:33:28.865 INFO [stderr] 146 | |     let b = "abydefx";
Dec 17 14:33:28.865 INFO [stderr] 147 | |
Dec 17 14:33:28.865 INFO [stderr] ...   |
Dec 17 14:33:28.865 INFO [stderr] 151 | |     );
Dec 17 14:33:28.865 INFO [stderr] 152 | | }
Dec 17 14:33:28.865 INFO [stderr]     | |_^
Dec 17 14:33:28.865 INFO [stderr]     |
Dec 17 14:33:28.865 INFO [stderr]     = note: #[warn(non_snake_case)] on by default
Dec 17 14:33:28.865 INFO [stderr] 
Dec 17 14:33:28.865 INFO [stderr] warning: function `returns_None_if_exact_match` should have a snake case name such as `returns_none_if_exact_match`
Dec 17 14:33:28.865 INFO [stderr]    --> src/bin/day02.rs:155:1
Dec 17 14:33:28.865 INFO [stderr]     |
Dec 17 14:33:28.865 INFO [stderr] 155 | / fn returns_None_if_exact_match() {
Dec 17 14:33:28.865 INFO [stderr] 156 | |     let a = "abcdefg";
Dec 17 14:33:28.865 INFO [stderr] 157 | |     let b = "abcdefg";
Dec 17 14:33:28.865 INFO [stderr] 158 | |
Dec 17 14:33:28.865 INFO [stderr] ...   |
Dec 17 14:33:28.865 INFO [stderr] 162 | |     );
Dec 17 14:33:28.865 INFO [stderr] 163 | | }
Dec 17 14:33:28.865 INFO [stderr]     | |_^
Dec 17 14:33:28.865 INFO [stderr] 
Dec 17 14:33:28.908 INFO [stderr] warning: variable does not need to be mutable
Dec 17 14:33:28.908 INFO [stderr]   --> src/bin/my_slow_day05.rs:60:13
Dec 17 14:33:28.908 INFO [stderr]    |
Dec 17 14:33:28.908 INFO [stderr] 60 |         let mut indexes_to_remove: Vec<usize> = vec![];
Dec 17 14:33:28.908 INFO [stderr]    |             ----^^^^^^^^^^^^^^^^^
Dec 17 14:33:28.908 INFO [stderr]    |             |
Dec 17 14:33:28.908 INFO [stderr]    |             help: remove this `mut`
Dec 17 14:33:28.908 INFO [stderr]    |
Dec 17 14:33:28.908 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 14:33:28.908 INFO [stderr] 
Dec 17 14:33:29.128 INFO [stderr] warning: unused variable: `new_grid`
Dec 17 14:33:29.128 INFO [stderr]   --> src/bin/day06.rs:32:21
Dec 17 14:33:29.128 INFO [stderr]    |
Dec 17 14:33:29.128 INFO [stderr] 32 |                 let new_grid = spread(x, y, grid);
Dec 17 14:33:29.128 INFO [stderr]    |                     ^^^^^^^^ help: consider using `_new_grid` instead
Dec 17 14:33:29.128 INFO [stderr]    |
Dec 17 14:33:29.128 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 14:33:29.128 INFO [stderr] 
Dec 17 14:33:29.128 INFO [stderr] warning: value assigned to `square` is never read
Dec 17 14:33:29.128 INFO [stderr]   --> src/bin/day06.rs:51:20
Dec 17 14:33:29.128 INFO [stderr]    |
Dec 17 14:33:29.128 INFO [stderr] 51 |             "." => square = sign,
Dec 17 14:33:29.128 INFO [stderr]    |                    ^^^^^^
Dec 17 14:33:29.128 INFO [stderr]    |
Dec 17 14:33:29.128 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 17 14:33:29.128 INFO [stderr] 
Dec 17 14:33:29.174 INFO [stderr] warning: variable `the_char_to_remove_that_resulted_in_shortest_polymer_result` is assigned to, but never used
Dec 17 14:33:29.184 INFO [stderr]   --> src/bin/my_slow_day05.rs:19:13
Dec 17 14:33:29.184 INFO [stderr]    |
Dec 17 14:33:29.184 INFO [stderr] 19 |     let mut the_char_to_remove_that_resulted_in_shortest_polymer_result: char;
Dec 17 14:33:29.184 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:33:29.196 INFO [stderr] error[E0384]: cannot assign twice to immutable variable `square`
Dec 17 14:33:29.197 INFO [stderr]   --> src/bin/day06.rs:51:20
Dec 17 14:33:29.197 INFO [stderr]    |
Dec 17 14:33:29.200 INFO [stderr] 49 |     for square in nine_squares {
Dec 17 14:33:29.200 INFO [stderr]    |         ------ first assignment to `square`
Dec 17 14:33:29.200 INFO [stderr] 50 |         match square {
Dec 17 14:33:29.200 INFO [stderr] 51 |             "." => square = sign,
Dec 17 14:33:29.200 INFO [stderr]    |                    ^^^^^^^^^^^^^ cannot assign twice to immutable variable
Dec 17 14:33:29.200 INFO [stderr] 
Dec 17 14:33:29.200 INFO [stderr]    |
Dec 17 14:33:29.200 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 14:33:29.200 INFO [stderr]    = note: consider using `_the_char_to_remove_that_resulted_in_shortest_polymer_result` instead
Dec 17 14:33:29.200 INFO [stderr] 
Dec 17 14:33:29.200 INFO [stderr] warning: value assigned to `the_char_to_remove_that_resulted_in_shortest_polymer_result` is never read
Dec 17 14:33:29.200 INFO [stderr]   --> src/bin/my_slow_day05.rs:45:13
Dec 17 14:33:29.200 INFO [stderr]    |
Dec 17 14:33:29.200 INFO [stderr] 45 |             the_char_to_remove_that_resulted_in_shortest_polymer_result = *char_to_remove;
Dec 17 14:33:29.200 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:33:29.200 INFO [stderr]    |
Dec 17 14:33:29.200 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 17 14:33:29.200 INFO [stderr] 
Dec 17 14:33:29.200 INFO [stderr] warning: unused variable: `indexes_to_remove`
Dec 17 14:33:29.201 INFO [stderr]   --> src/bin/my_slow_day05.rs:60:17
Dec 17 14:33:29.201 INFO [stderr]    |
Dec 17 14:33:29.201 INFO [stderr] 60 |         let mut indexes_to_remove: Vec<usize> = vec![];
Dec 17 14:33:29.201 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^ help: consider using `_indexes_to_remove` instead
Dec 17 14:33:29.201 INFO [stderr] 
Dec 17 14:33:29.224 INFO [stderr] error: aborting due to previous error
Dec 17 14:33:29.224 INFO [stderr] 
Dec 17 14:33:29.224 INFO [stderr] For more information about this error, try `rustc --explain E0384`.
Dec 17 14:33:29.240 INFO [stderr] warning: variable does not need to be mutable
Dec 17 14:33:29.241 INFO [stderr]   --> src/bin/my_slow_day05.rs:60:13
Dec 17 14:33:29.241 INFO [stderr]    |
Dec 17 14:33:29.241 INFO [stderr] 60 |         let mut indexes_to_remove: Vec<usize> = vec![];
Dec 17 14:33:29.241 INFO [stderr]    |             ----^^^^^^^^^^^^^^^^^
Dec 17 14:33:29.241 INFO [stderr]    |             |
Dec 17 14:33:29.241 INFO [stderr]    |             help: remove this `mut`
Dec 17 14:33:29.244 INFO [stderr]    |
Dec 17 14:33:29.244 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 14:33:29.244 INFO [stderr] 
Dec 17 14:33:29.299 INFO [stderr] error: Could not compile `advent-of-code-2018-reorganized`.
Dec 17 14:33:29.299 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 17 14:33:29.334 INFO [stderr] warning: unused variable: `new_grid`
Dec 17 14:33:29.334 INFO [stderr]   --> src/bin/day06.rs:32:21
Dec 17 14:33:29.334 INFO [stderr]    |
Dec 17 14:33:29.334 INFO [stderr] 32 |                 let new_grid = spread(x, y, grid);
Dec 17 14:33:29.334 INFO [stderr]    |                     ^^^^^^^^ help: consider using `_new_grid` instead
Dec 17 14:33:29.334 INFO [stderr]    |
Dec 17 14:33:29.334 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 14:33:29.334 INFO [stderr] 
Dec 17 14:33:29.334 INFO [stderr] warning: value assigned to `square` is never read
Dec 17 14:33:29.334 INFO [stderr]   --> src/bin/day06.rs:51:20
Dec 17 14:33:29.334 INFO [stderr]    |
Dec 17 14:33:29.334 INFO [stderr] 51 |             "." => square = sign,
Dec 17 14:33:29.334 INFO [stderr]    |                    ^^^^^^
Dec 17 14:33:29.334 INFO [stderr]    |
Dec 17 14:33:29.334 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 17 14:33:29.334 INFO [stderr] 
Dec 17 14:33:29.425 INFO [stderr] error[E0384]: cannot assign twice to immutable variable `square`
Dec 17 14:33:29.425 INFO [stderr]   --> src/bin/day06.rs:51:20
Dec 17 14:33:29.425 INFO [stderr]    |
Dec 17 14:33:29.425 INFO [stderr] 49 |     for square in nine_squares {
Dec 17 14:33:29.425 INFO [stderr]    |         ------ first assignment to `square`
Dec 17 14:33:29.425 INFO [stderr] 50 |         match square {
Dec 17 14:33:29.425 INFO [stderr] 51 |             "." => square = sign,
Dec 17 14:33:29.425 INFO [stderr]    |                    ^^^^^^^^^^^^^ cannot assign twice to immutable variable
Dec 17 14:33:29.425 INFO [stderr] 
Dec 17 14:33:29.436 INFO [stderr] warning: unused variable: `guards`
Dec 17 14:33:29.437 INFO [stderr]   --> src/bin/day04_bad_attempt.rs:39:13
Dec 17 14:33:29.437 INFO [stderr]    |
Dec 17 14:33:29.437 INFO [stderr] 39 |     let mut guards: HashMap<usize, Guard> = HashMap::new();
Dec 17 14:33:29.437 INFO [stderr]    |             ^^^^^^ help: consider using `_guards` instead
Dec 17 14:33:29.437 INFO [stderr]    |
Dec 17 14:33:29.437 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 14:33:29.437 INFO [stderr] 
Dec 17 14:33:29.488 INFO [stderr] warning: variable does not need to be mutable
Dec 17 14:33:29.489 INFO [stderr]   --> src/bin/day04_bad_attempt.rs:39:9
Dec 17 14:33:29.489 INFO [stderr]    |
Dec 17 14:33:29.489 INFO [stderr] 39 |     let mut guards: HashMap<usize, Guard> = HashMap::new();
Dec 17 14:33:29.489 INFO [stderr]    |         ----^^^^^^
Dec 17 14:33:29.489 INFO [stderr]    |         |
Dec 17 14:33:29.489 INFO [stderr]    |         help: remove this `mut`
Dec 17 14:33:29.489 INFO [stderr]    |
Dec 17 14:33:29.489 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 14:33:29.489 INFO [stderr] 
Dec 17 14:33:29.489 INFO [stderr] warning: unused variable: `guards`
Dec 17 14:33:29.489 INFO [stderr]   --> src/bin/day04_bad_attempt.rs:39:13
Dec 17 14:33:29.489 INFO [stderr]    |
Dec 17 14:33:29.489 INFO [stderr] 39 |     let mut guards: HashMap<usize, Guard> = HashMap::new();
Dec 17 14:33:29.489 INFO [stderr]    |             ^^^^^^ help: consider using `_guards` instead
Dec 17 14:33:29.489 INFO [stderr]    |
Dec 17 14:33:29.489 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 14:33:29.489 INFO [stderr] 
Dec 17 14:33:29.489 INFO [stderr] warning: variable does not need to be mutable
Dec 17 14:33:29.489 INFO [stderr]   --> src/bin/day04_bad_attempt.rs:39:9
Dec 17 14:33:29.489 INFO [stderr]    |
Dec 17 14:33:29.489 INFO [stderr] 39 |     let mut guards: HashMap<usize, Guard> = HashMap::new();
Dec 17 14:33:29.489 INFO [stderr]    |         ----^^^^^^
Dec 17 14:33:29.489 INFO [stderr]    |         |
Dec 17 14:33:29.489 INFO [stderr]    |         help: remove this `mut`
Dec 17 14:33:29.489 INFO [stderr]    |
Dec 17 14:33:29.489 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 14:33:29.489 INFO [stderr] 
Dec 17 14:33:29.489 INFO [stderr] error: aborting due to previous error
Dec 17 14:33:29.489 INFO [stderr] 
Dec 17 14:33:29.489 INFO [stderr] For more information about this error, try `rustc --explain E0384`.
Dec 17 14:33:29.525 INFO [stderr] error: Could not compile `advent-of-code-2018-reorganized`.
Dec 17 14:33:29.525 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 17 14:33:29.898 INFO [stderr] error: build failed
Dec 17 14:33:30.628 INFO running `"docker" "inspect" "817a7353e6dfb06e324d09d4e7e60ad3edd806321e23e5f564e43d089e8d4ca8"`
Dec 17 14:33:30.918 INFO running `"docker" "rm" "-f" "817a7353e6dfb06e324d09d4e7e60ad3edd806321e23e5f564e43d089e8d4ca8"`
Dec 17 14:33:31.212 INFO [stdout] 817a7353e6dfb06e324d09d4e7e60ad3edd806321e23e5f564e43d089e8d4ca8