[INFO] updating cached repository jakubtuchol/adventofcode2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jakubtuchol/adventofcode2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jakubtuchol/adventofcode2018" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/jakubtuchol/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/jakubtuchol/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jakubtuchol/adventofcode2018" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/jakubtuchol/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/jakubtuchol/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5b238b3b6a2eec7ce8c6939a6a0062e85430ae24
[INFO] sha for GitHub repo jakubtuchol/adventofcode2018: 5b238b3b6a2eec7ce8c6939a6a0062e85430ae24
[INFO] validating manifest of jakubtuchol/adventofcode2018 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jakubtuchol/adventofcode2018 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jakubtuchol/adventofcode2018
[INFO] finished frobbing jakubtuchol/adventofcode2018
[INFO] frobbed toml for jakubtuchol/adventofcode2018 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/jakubtuchol/adventofcode2018/Cargo.toml
[INFO] started frobbing jakubtuchol/adventofcode2018
[INFO] finished frobbing jakubtuchol/adventofcode2018
[INFO] frobbed toml for jakubtuchol/adventofcode2018 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/jakubtuchol/adventofcode2018/Cargo.toml
[INFO] crate jakubtuchol/adventofcode2018 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking jakubtuchol/adventofcode2018 against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-4/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/jakubtuchol/adventofcode2018:/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 37c1c2b1553d0a961c320bdd3d2310f343eaedb17c4da6a7dc3ecc6fcb11a54a
[INFO] running `"docker" "start" "-a" "37c1c2b1553d0a961c320bdd3d2310f343eaedb17c4da6a7dc3ecc6fcb11a54a"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking adventofcode v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `last_event`
[INFO] [stderr]   --> src/day_four.rs:91:13
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut last_event: Option<Event> = None;
[INFO] [stderr]    |             ^^^^^^^^^^ help: consider prefixing with an underscore: `_last_event`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_event`
[INFO] [stderr]   --> src/day_four.rs:94:13
[INFO] [stderr]    |
[INFO] [stderr] 94 |         let new_event = parse_event(&line);
[INFO] [stderr]    |             ^^^^^^^^^ help: consider prefixing with an underscore: `_new_event`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day_four.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut last_event: Option<Event> = None;
[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: variant is never constructed: `Begin`
[INFO] [stderr]  --> src/day_four.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Begin,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Sleep`
[INFO] [stderr]  --> src/day_four.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Sleep,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Wake`
[INFO] [stderr]  --> src/day_four.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Wake,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Event`
[INFO] [stderr]   --> src/day_four.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct Event {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_date`
[INFO] [stderr]   --> src/day_four.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn get_date(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_event`
[INFO] [stderr]   --> src/day_four.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn parse_event(line: &str) -> (Event, Option<i32>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_minute_difference`
[INFO] [stderr]   --> src/day_four.rs:70:1
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn get_minute_difference(one: &Event, two: &Event) -> Vec<i32> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_vector_sum`
[INFO] [stderr]   --> src/day_four.rs:83:1
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn get_vector_sum(one: Vec<i32>, two: Vec<i32>) -> Vec<i32> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_most_minutes_asleep`
[INFO] [stderr]   --> src/day_four.rs:90:1
[INFO] [stderr]    |
[INFO] [stderr] 90 | fn calculate_most_minutes_asleep(lines: Vec<String>) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `last_event`
[INFO] [stderr]   --> src/day_four.rs:91:13
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut last_event: Option<Event> = None;
[INFO] [stderr]    |             ^^^^^^^^^^ help: consider prefixing with an underscore: `_last_event`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_event`
[INFO] [stderr]   --> src/day_four.rs:94:13
[INFO] [stderr]    |
[INFO] [stderr] 94 |         let new_event = parse_event(&line);
[INFO] [stderr]    |             ^^^^^^^^^ help: consider prefixing with an underscore: `_new_event`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day_four.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut last_event: Option<Event> = None;
[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: method is never used: `get_date`
[INFO] [stderr]   --> src/day_four.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn get_date(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_minute_difference`
[INFO] [stderr]   --> src/day_four.rs:70:1
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn get_minute_difference(one: &Event, two: &Event) -> Vec<i32> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_most_minutes_asleep`
[INFO] [stderr]   --> src/day_four.rs:90:1
[INFO] [stderr]    |
[INFO] [stderr] 90 | fn calculate_most_minutes_asleep(lines: Vec<String>) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `"docker" "inspect" "37c1c2b1553d0a961c320bdd3d2310f343eaedb17c4da6a7dc3ecc6fcb11a54a"`
[INFO] running `"docker" "rm" "-f" "37c1c2b1553d0a961c320bdd3d2310f343eaedb17c4da6a7dc3ecc6fcb11a54a"`
[INFO] [stdout] 37c1c2b1553d0a961c320bdd3d2310f343eaedb17c4da6a7dc3ecc6fcb11a54a