[INFO] updating cached repository AugustinLF/advent-of-code-2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/AugustinLF/advent-of-code-2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/AugustinLF/advent-of-code-2018" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/AugustinLF/advent-of-code-2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/AugustinLF/advent-of-code-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/AugustinLF/advent-of-code-2018" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/AugustinLF/advent-of-code-2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/AugustinLF/advent-of-code-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0e044149b10f60cca4656a7acf1acd2ccf9e88f1
[INFO] sha for GitHub repo AugustinLF/advent-of-code-2018: 0e044149b10f60cca4656a7acf1acd2ccf9e88f1
[INFO] validating manifest of AugustinLF/advent-of-code-2018 on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of AugustinLF/advent-of-code-2018 on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing AugustinLF/advent-of-code-2018
[INFO] finished frobbing AugustinLF/advent-of-code-2018
[INFO] frobbed toml for AugustinLF/advent-of-code-2018 written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/AugustinLF/advent-of-code-2018/Cargo.toml
[INFO] started frobbing AugustinLF/advent-of-code-2018
[INFO] finished frobbing AugustinLF/advent-of-code-2018
[INFO] frobbed toml for AugustinLF/advent-of-code-2018 written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/AugustinLF/advent-of-code-2018/Cargo.toml
[INFO] crate AugustinLF/advent-of-code-2018 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking AugustinLF/advent-of-code-2018 against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-6/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/AugustinLF/advent-of-code-2018:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 15bfa81efc16161337365d7b6d17bb8c1ffdcf87fd9606459a875a8d0d221c9d
[INFO] running `"docker" "start" "-a" "15bfa81efc16161337365d7b6d17bb8c1ffdcf87fd9606459a875a8d0d221c9d"`
[INFO] [stderr]     Checking advent-of-code-2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `generate_frequency`
[INFO] [stderr]  --> src/ex1.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn generate_frequency(initial_frequency: i32, mut input: Vec<i32>) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `from_string_to_frequencies`
[INFO] [stderr]   --> src/ex1.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn from_string_to_frequencies(content: String) -> Vec<i32> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve_exercise`
[INFO] [stderr]   --> src/ex1.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn solve_exercise(process: fn(i32, Vec<i32>) -> i32) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_repeated_frequency`
[INFO] [stderr]   --> src/ex1.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn find_repeated_frequency(base_frequency: i32, input: Vec<i32>) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_product_checksum`
[INFO] [stderr]  --> src/ex2.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn get_product_checksum(id: &str) -> (i32, i32) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_checksum`
[INFO] [stderr]   --> src/ex2.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn calculate_checksum(ids: Vec<String>) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `are_ids_similar`
[INFO] [stderr]   --> src/ex2.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn are_ids_similar<'a>(first: &'a str, second: &'a str) -> Option<String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_ids`
[INFO] [stderr]   --> src/ex2.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn get_ids() -> Vec<String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_base_id`
[INFO] [stderr]   --> src/ex2.rs:67:1
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn find_base_id(mut ids: Vec<String>) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve_exercise_1`
[INFO] [stderr]   --> src/ex2.rs:81:1
[INFO] [stderr]    |
[INFO] [stderr] 81 | pub fn solve_exercise_1() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve_exercise_2`
[INFO] [stderr]   --> src/ex2.rs:87:1
[INFO] [stderr]    |
[INFO] [stderr] 87 | pub fn solve_exercise_2() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_claim`
[INFO] [stderr]   --> src/ex3.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn parse_claim<'a>(claim: &'a str) -> Claim<'a> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `set_covered_fabric`
[INFO] [stderr]   --> src/ex3.rs:46:1
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn set_covered_fabric(claim: &Claim, fabric: &mut HashMap<String, u16>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_covered_fabric_for_claims`
[INFO] [stderr]   --> src/ex3.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn get_covered_fabric_for_claims(claims: &mut Vec<Claim>) -> HashMap<String, u16> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_fabric_for_claims`
[INFO] [stderr]   --> src/ex3.rs:68:1
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn find_fabric_for_claims(mut claims: Vec<Claim>) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_claim_overlapped`
[INFO] [stderr]   --> src/ex3.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn is_claim_overlapped(claim: &Claim, fabric: &HashMap<String, u16>) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_claim_with_no_overlap`
[INFO] [stderr]   --> src/ex3.rs:97:1
[INFO] [stderr]    |
[INFO] [stderr] 97 | fn find_claim_with_no_overlap<'a>(mut claims: Vec<Claim<'a>>) -> &'a str {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve_exercise_2`
[INFO] [stderr]    --> src/ex3.rs:111:1
[INFO] [stderr]     |
[INFO] [stderr] 111 | pub fn solve_exercise_2() -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve_exercise_1`
[INFO] [stderr]    --> src/ex3.rs:123:1
[INFO] [stderr]     |
[INFO] [stderr] 123 | pub fn solve_exercise_1() -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NewGuard`
[INFO] [stderr]  --> src/ex4.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     NewGuard(u16), // id
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `WakesUp`
[INFO] [stderr]  --> src/ex4.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     WakesUp,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FallsAsleep`
[INFO] [stderr]   --> src/ex4.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     FallsAsleep,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_record`
[INFO] [stderr]   --> src/ex4.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn parse_record<'a>(input: &'a str) -> Record {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `GuardPresence`
[INFO] [stderr]   --> src/ex4.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | type GuardPresence = HashMap<NaiveDateTime, bool>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Presences`
[INFO] [stderr]   --> src/ex4.rs:46:1
[INFO] [stderr]    |
[INFO] [stderr] 46 | type Presences = HashMap<u16, GuardPresence>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rec_get_guards_presence`
[INFO] [stderr]   --> src/ex4.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | / fn rec_get_guards_presence<'a>(
[INFO] [stderr] 49 | |     mut records: Vec<Record>,
[INFO] [stderr] 50 | |     mut presences: Presences,
[INFO] [stderr] 51 | |     guard_id: Option<u16>,
[INFO] [stderr] ...  |
[INFO] [stderr] 91 | |     }
[INFO] [stderr] 92 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_presence_from_input`
[INFO] [stderr]   --> src/ex4.rs:94:1
[INFO] [stderr]    |
[INFO] [stderr] 94 | fn get_presence_from_input(input: &str) -> Presences {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_sleepiest_guard_minute`
[INFO] [stderr]    --> src/ex4.rs:103:1
[INFO] [stderr]     |
[INFO] [stderr] 103 | fn get_sleepiest_guard_minute(guard_presence: &GuardPresence) -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_sleepiest_guards_minute`
[INFO] [stderr]    --> src/ex4.rs:116:1
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn get_sleepiest_guards_minute(input: &str) -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_most_likely_alseep_minute`
[INFO] [stderr]    --> src/ex4.rs:151:1
[INFO] [stderr]     |
[INFO] [stderr] 151 | fn get_most_likely_alseep_minute(input: &str) -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exercise_4_1`
[INFO] [stderr]    --> src/ex4.rs:176:1
[INFO] [stderr]     |
[INFO] [stderr] 176 | pub fn exercise_4_1() -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exercise_4_2`
[INFO] [stderr]    --> src/ex4.rs:181:1
[INFO] [stderr]     |
[INFO] [stderr] 181 | pub fn exercise_4_2() -> u32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `react_polymer_from_string`
[INFO] [stderr]  --> src/ex5.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn react_polymer_from_string(polymer: &str) -> LinkedList<char> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `polymer_react_once`
[INFO] [stderr]   --> src/ex5.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn polymer_react_once(mut polymer: LinkedList<char>) -> LinkedList<char> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `polymer_react`
[INFO] [stderr]   --> src/ex5.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn polymer_react(mut polymer: LinkedList<char>) -> LinkedList<char> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exercise_5_1`
[INFO] [stderr]   --> src/ex5.rs:47:1
[INFO] [stderr]    |
[INFO] [stderr] 47 | pub fn exercise_5_1() -> usize {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `remove_unit_and_react_polymer`
[INFO] [stderr]   --> src/ex5.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn remove_unit_and_react_polymer(polymer: &str, unit_to_remove: char) -> usize {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exercise_5_2`
[INFO] [stderr]   --> src/ex5.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | pub fn exercise_5_2() -> usize {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "15bfa81efc16161337365d7b6d17bb8c1ffdcf87fd9606459a875a8d0d221c9d"`
[INFO] running `"docker" "rm" "-f" "15bfa81efc16161337365d7b6d17bb8c1ffdcf87fd9606459a875a8d0d221c9d"`
[INFO] [stdout] 15bfa81efc16161337365d7b6d17bb8c1ffdcf87fd9606459a875a8d0d221c9d