[INFO] cloning repository https://github.com/nambrosini/advent-of-code
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nambrosini/advent-of-code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnambrosini%2Fadvent-of-code"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnambrosini%2Fadvent-of-code'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5ec62666b5907c05c0b416116b07a5b4d8cdc13a
[INFO] checking nambrosini/advent-of-code against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnambrosini%2Fadvent-of-code" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nambrosini/advent-of-code on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/nambrosini/advent-of-code
[INFO] finished tweaking git repo https://github.com/nambrosini/advent-of-code
[INFO] tweaked toml for git repo https://github.com/nambrosini/advent-of-code written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/nambrosini/advent-of-code already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] f618d5d0520f22e2b6eb8884ae17fc6ccddb7b0da2993c27869f287576832891
[INFO] running `"docker" "start" "-a" "f618d5d0520f22e2b6eb8884ae17fc6ccddb7b0da2993c27869f287576832891"`
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]     Checking backtrace v0.3.13
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking advent-of-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day3/part1.rs:17:25
[INFO] [stderr]    |
[INFO] [stderr] 17 |                     let mut v = &mut fabric.get_mut((in_tuple.2 + i) as usize).unwrap();
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/day3/part1.rs:21:25
[INFO] [stderr]    |
[INFO] [stderr] 21 |                     let mut v = &mut fabric.get_mut((in_tuple.2 + i) as usize).unwrap();
[INFO] [stderr]    |                         ----^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calc_frequency`
[INFO] [stderr]  --> src/day1/part1.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn calc_frequency(numbers: 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: `find_repetition`
[INFO] [stderr]  --> src/day1/part2.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn find_repetition(numbers: Vec<i32>) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_checksum`
[INFO] [stderr]  --> src/day2/part1.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn find_checksum(file_content: Vec<&str>) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NotFound`
[INFO] [stderr]  --> src/day2/part2.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     NotFound,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_common_letters`
[INFO] [stderr]  --> src/day2/part2.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn find_common_letters(input: &str) -> Result<String, Errors> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `count_word_difference`
[INFO] [stderr]   --> src/day2/part2.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn count_word_difference(str1: &str, str2: &str) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_word_without_differences`
[INFO] [stderr]   --> src/day2/part2.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn get_word_without_differences(str1: &str, str2: &str) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `GuardTime`
[INFO] [stderr]  --> src/day4/mod.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct GuardTime {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `dateTime` should have a snake case name
[INFO] [stderr]  --> src/day4/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     dateTime: Utc,
[INFO] [stderr]   |     ^^^^^^^^ help: convert the identifier to snake case: `date_time`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day3/part1.rs:17:25
[INFO] [stderr]    |
[INFO] [stderr] 17 |                     let mut v = &mut fabric.get_mut((in_tuple.2 + i) as usize).unwrap();
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/day3/part1.rs:21:25
[INFO] [stderr]    |
[INFO] [stderr] 21 |                     let mut v = &mut fabric.get_mut((in_tuple.2 + i) as usize).unwrap();
[INFO] [stderr]    |                         ----^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `GuardTime`
[INFO] [stderr]  --> src/day4/mod.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct GuardTime {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `dateTime` should have a snake case name
[INFO] [stderr]  --> src/day4/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     dateTime: Utc,
[INFO] [stderr]   |     ^^^^^^^^ help: convert the identifier to snake case: `date_time`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.44s
[INFO] running `"docker" "inspect" "f618d5d0520f22e2b6eb8884ae17fc6ccddb7b0da2993c27869f287576832891"`
[INFO] running `"docker" "rm" "-f" "f618d5d0520f22e2b6eb8884ae17fc6ccddb7b0da2993c27869f287576832891"`
[INFO] [stdout] f618d5d0520f22e2b6eb8884ae17fc6ccddb7b0da2993c27869f287576832891