Dec 17 20:07:59.232 INFO checking marony/rust_euler against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 20:07:59.232 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/marony/rust_euler:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 20:07:59.642 INFO [stdout] 342fc528a54f46fdb17b9f3029dccfcc55ecaab310e138947f0348bc3e338088
Dec 17 20:07:59.642 INFO running `"docker" "start" "-a" "342fc528a54f46fdb17b9f3029dccfcc55ecaab310e138947f0348bc3e338088"`
Dec 17 20:08:00.936 INFO [stderr]     Checking time v0.1.35
Dec 17 20:08:01.711 INFO [stderr]     Checking euler v0.1.0 (/opt/crater/workdir)
Dec 17 20:08:02.130 INFO [stderr] warning: function is never used: `problem_001`
Dec 17 20:08:02.130 INFO [stderr]   --> src/main.rs:18:1
Dec 17 20:08:02.130 INFO [stderr]    |
Dec 17 20:08:02.130 INFO [stderr] 18 | fn problem_001() {
Dec 17 20:08:02.131 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.131 INFO [stderr]    |
Dec 17 20:08:02.131 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 20:08:02.131 INFO [stderr] 
Dec 17 20:08:02.131 INFO [stderr] warning: struct is never constructed: `Fib`
Dec 17 20:08:02.131 INFO [stderr]   --> src/main.rs:26:1
Dec 17 20:08:02.131 INFO [stderr]    |
Dec 17 20:08:02.131 INFO [stderr] 26 | struct Fib {
Dec 17 20:08:02.131 INFO [stderr]    | ^^^^^^^^^^
Dec 17 20:08:02.131 INFO [stderr] 
Dec 17 20:08:02.131 INFO [stderr] warning: method is never used: `new`
Dec 17 20:08:02.131 INFO [stderr]   --> src/main.rs:32:5
Dec 17 20:08:02.131 INFO [stderr]    |
Dec 17 20:08:02.131 INFO [stderr] 32 |     fn new() -> Fib {
Dec 17 20:08:02.131 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 17 20:08:02.131 INFO [stderr] 
Dec 17 20:08:02.131 INFO [stderr] warning: function is never used: `problem_002`
Dec 17 20:08:02.131 INFO [stderr]   --> src/main.rs:50:1
Dec 17 20:08:02.131 INFO [stderr]    |
Dec 17 20:08:02.131 INFO [stderr] 50 | fn problem_002() {
Dec 17 20:08:02.131 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.131 INFO [stderr] 
Dec 17 20:08:02.131 INFO [stderr] warning: function is never used: `prime_factors`
Dec 17 20:08:02.131 INFO [stderr]   --> src/main.rs:56:1
Dec 17 20:08:02.131 INFO [stderr]    |
Dec 17 20:08:02.131 INFO [stderr] 56 | fn prime_factors<'a>(n: u64, xs: &'a mut Vec<u64>) -> &'a Vec<u64> {
Dec 17 20:08:02.131 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.131 INFO [stderr] 
Dec 17 20:08:02.131 INFO [stderr] warning: function is never used: `problem_003`
Dec 17 20:08:02.131 INFO [stderr]   --> src/main.rs:69:1
Dec 17 20:08:02.131 INFO [stderr]    |
Dec 17 20:08:02.131 INFO [stderr] 69 | fn problem_003() {
Dec 17 20:08:02.131 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.131 INFO [stderr] 
Dec 17 20:08:02.131 INFO [stderr] warning: function is never used: `is_palindome`
Dec 17 20:08:02.131 INFO [stderr]   --> src/main.rs:83:1
Dec 17 20:08:02.131 INFO [stderr]    |
Dec 17 20:08:02.131 INFO [stderr] 83 | fn is_palindome(n: &u64) -> bool {
Dec 17 20:08:02.131 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.131 INFO [stderr] 
Dec 17 20:08:02.131 INFO [stderr] warning: function is never used: `problem_004`
Dec 17 20:08:02.131 INFO [stderr]   --> src/main.rs:91:1
Dec 17 20:08:02.131 INFO [stderr]    |
Dec 17 20:08:02.131 INFO [stderr] 91 | fn problem_004() {
Dec 17 20:08:02.131 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.132 INFO [stderr] 
Dec 17 20:08:02.132 INFO [stderr] warning: function is never used: `problem_005`
Dec 17 20:08:02.132 INFO [stderr]    --> src/main.rs:125:1
Dec 17 20:08:02.132 INFO [stderr]     |
Dec 17 20:08:02.132 INFO [stderr] 125 | fn problem_005() {
Dec 17 20:08:02.132 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.132 INFO [stderr] 
Dec 17 20:08:02.132 INFO [stderr] warning: function is never used: `problem_006`
Dec 17 20:08:02.132 INFO [stderr]    --> src/main.rs:141:1
Dec 17 20:08:02.132 INFO [stderr]     |
Dec 17 20:08:02.132 INFO [stderr] 141 | fn problem_006() {
Dec 17 20:08:02.132 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.132 INFO [stderr] 
Dec 17 20:08:02.132 INFO [stderr] warning: function is never used: `is_prime`
Dec 17 20:08:02.132 INFO [stderr]    --> src/main.rs:162:1
Dec 17 20:08:02.132 INFO [stderr]     |
Dec 17 20:08:02.132 INFO [stderr] 162 | fn is_prime(n: &u64) -> bool {
Dec 17 20:08:02.132 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.132 INFO [stderr] 
Dec 17 20:08:02.132 INFO [stderr] warning: function is never used: `problem_007`
Dec 17 20:08:02.132 INFO [stderr]    --> src/main.rs:168:1
Dec 17 20:08:02.132 INFO [stderr]     |
Dec 17 20:08:02.132 INFO [stderr] 168 | fn problem_007() {
Dec 17 20:08:02.132 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.132 INFO [stderr] 
Dec 17 20:08:02.132 INFO [stderr] warning: function is never used: `problem_008`
Dec 17 20:08:02.132 INFO [stderr]    --> src/main.rs:182:1
Dec 17 20:08:02.132 INFO [stderr]     |
Dec 17 20:08:02.132 INFO [stderr] 182 | fn problem_008() {
Dec 17 20:08:02.132 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.132 INFO [stderr] 
Dec 17 20:08:02.132 INFO [stderr] warning: function is never used: `pythagorean_triplet`
Dec 17 20:08:02.132 INFO [stderr]    --> src/main.rs:230:1
Dec 17 20:08:02.132 INFO [stderr]     |
Dec 17 20:08:02.132 INFO [stderr] 230 | fn pythagorean_triplet(a: u64, b: u64, c: u64) -> Option<u64> {
Dec 17 20:08:02.132 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.132 INFO [stderr] 
Dec 17 20:08:02.132 INFO [stderr] warning: function is never used: `problem_009`
Dec 17 20:08:02.132 INFO [stderr]    --> src/main.rs:246:1
Dec 17 20:08:02.132 INFO [stderr]     |
Dec 17 20:08:02.132 INFO [stderr] 246 | fn problem_009() {
Dec 17 20:08:02.132 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.132 INFO [stderr] 
Dec 17 20:08:02.132 INFO [stderr] warning: function is never used: `problem_010`
Dec 17 20:08:02.132 INFO [stderr]    --> src/main.rs:266:1
Dec 17 20:08:02.132 INFO [stderr]     |
Dec 17 20:08:02.132 INFO [stderr] 266 | fn problem_010() {
Dec 17 20:08:02.132 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.132 INFO [stderr] 
Dec 17 20:08:02.132 INFO [stderr] warning: function is never used: `problem_011`
Dec 17 20:08:02.132 INFO [stderr]    --> src/main.rs:280:1
Dec 17 20:08:02.132 INFO [stderr]     |
Dec 17 20:08:02.132 INFO [stderr] 280 | fn problem_011() {
Dec 17 20:08:02.132 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.132 INFO [stderr] 
Dec 17 20:08:02.132 INFO [stderr] warning: function is never used: `factors`
Dec 17 20:08:02.132 INFO [stderr]    --> src/main.rs:372:1
Dec 17 20:08:02.132 INFO [stderr]     |
Dec 17 20:08:02.132 INFO [stderr] 372 | fn factors<'a>(n: u64) -> Vec<u64> {
Dec 17 20:08:02.132 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.132 INFO [stderr] 
Dec 17 20:08:02.133 INFO [stderr] warning: function is never used: `triangle_number`
Dec 17 20:08:02.133 INFO [stderr]    --> src/main.rs:383:1
Dec 17 20:08:02.133 INFO [stderr]     |
Dec 17 20:08:02.133 INFO [stderr] 383 | fn triangle_number(n: u64) -> u64 {
Dec 17 20:08:02.133 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.133 INFO [stderr] 
Dec 17 20:08:02.133 INFO [stderr] warning: function is never used: `problem_012`
Dec 17 20:08:02.133 INFO [stderr]    --> src/main.rs:389:1
Dec 17 20:08:02.133 INFO [stderr]     |
Dec 17 20:08:02.133 INFO [stderr] 389 | fn problem_012<'a>() {
Dec 17 20:08:02.133 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.133 INFO [stderr] 
Dec 17 20:08:02.133 INFO [stderr] warning: function is never used: `problem_013`
Dec 17 20:08:02.133 INFO [stderr]    --> src/main.rs:403:1
Dec 17 20:08:02.133 INFO [stderr]     |
Dec 17 20:08:02.133 INFO [stderr] 403 | fn problem_013() {
Dec 17 20:08:02.133 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.133 INFO [stderr] 
Dec 17 20:08:02.133 INFO [stderr] warning: comparison is useless due to type limits
Dec 17 20:08:02.133 INFO [stderr]    --> src/main.rs:315:31
Dec 17 20:08:02.133 INFO [stderr]     |
Dec 17 20:08:02.133 INFO [stderr] 315 |         if is.iter().all(|&i| 0 <= i && i < (SLEN * SLEN) as usize && (i / SLEN as usize) == y) {
Dec 17 20:08:02.133 INFO [stderr]     |                               ^^^^^^
Dec 17 20:08:02.133 INFO [stderr]     |
Dec 17 20:08:02.133 INFO [stderr]     = note: #[warn(unused_comparisons)] on by default
Dec 17 20:08:02.133 INFO [stderr] 
Dec 17 20:08:02.133 INFO [stderr] warning: comparison is useless due to type limits
Dec 17 20:08:02.133 INFO [stderr]    --> src/main.rs:326:31
Dec 17 20:08:02.133 INFO [stderr]     |
Dec 17 20:08:02.133 INFO [stderr] 326 |         if is.iter().all(|&i| 0 <= i && i < (SLEN * SLEN) as usize && (i % SLEN as usize) == x) {
Dec 17 20:08:02.133 INFO [stderr]     |                               ^^^^^^
Dec 17 20:08:02.133 INFO [stderr] 
Dec 17 20:08:02.133 INFO [stderr] warning: comparison is useless due to type limits
Dec 17 20:08:02.134 INFO [stderr]    --> src/main.rs:337:31
Dec 17 20:08:02.134 INFO [stderr]     |
Dec 17 20:08:02.134 INFO [stderr] 337 |         if is.iter().all(|&i| 0 <= i && i < (SLEN * SLEN) as usize && (i % SLEN as usize) >= x && (i / SLEN as usize) >= y) {
Dec 17 20:08:02.134 INFO [stderr]     |                               ^^^^^^
Dec 17 20:08:02.134 INFO [stderr] 
Dec 17 20:08:02.134 INFO [stderr] warning: comparison is useless due to type limits
Dec 17 20:08:02.134 INFO [stderr]    --> src/main.rs:348:31
Dec 17 20:08:02.134 INFO [stderr]     |
Dec 17 20:08:02.134 INFO [stderr] 348 |         if is.iter().all(|&i| 0 <= i && i < (SLEN * SLEN) as usize && (i % SLEN as usize) <= x && (i / SLEN as usize) >= y) {
Dec 17 20:08:02.134 INFO [stderr]     |                               ^^^^^^
Dec 17 20:08:02.134 INFO [stderr] 
Dec 17 20:08:02.258 INFO [stderr] warning: function is never used: `problem_001`
Dec 17 20:08:02.258 INFO [stderr]   --> src/main.rs:18:1
Dec 17 20:08:02.258 INFO [stderr]    |
Dec 17 20:08:02.258 INFO [stderr] 18 | fn problem_001() {
Dec 17 20:08:02.258 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.258 INFO [stderr]    |
Dec 17 20:08:02.258 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 20:08:02.258 INFO [stderr] 
Dec 17 20:08:02.258 INFO [stderr] warning: struct is never constructed: `Fib`
Dec 17 20:08:02.258 INFO [stderr]   --> src/main.rs:26:1
Dec 17 20:08:02.258 INFO [stderr]    |
Dec 17 20:08:02.258 INFO [stderr] 26 | struct Fib {
Dec 17 20:08:02.258 INFO [stderr]    | ^^^^^^^^^^
Dec 17 20:08:02.258 INFO [stderr] 
Dec 17 20:08:02.258 INFO [stderr] warning: method is never used: `new`
Dec 17 20:08:02.258 INFO [stderr]   --> src/main.rs:32:5
Dec 17 20:08:02.258 INFO [stderr]    |
Dec 17 20:08:02.258 INFO [stderr] 32 |     fn new() -> Fib {
Dec 17 20:08:02.258 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 17 20:08:02.258 INFO [stderr] 
Dec 17 20:08:02.258 INFO [stderr] warning: function is never used: `problem_002`
Dec 17 20:08:02.258 INFO [stderr]   --> src/main.rs:50:1
Dec 17 20:08:02.258 INFO [stderr]    |
Dec 17 20:08:02.258 INFO [stderr] 50 | fn problem_002() {
Dec 17 20:08:02.258 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.258 INFO [stderr] 
Dec 17 20:08:02.258 INFO [stderr] warning: function is never used: `prime_factors`
Dec 17 20:08:02.258 INFO [stderr]   --> src/main.rs:56:1
Dec 17 20:08:02.258 INFO [stderr]    |
Dec 17 20:08:02.259 INFO [stderr] 56 | fn prime_factors<'a>(n: u64, xs: &'a mut Vec<u64>) -> &'a Vec<u64> {
Dec 17 20:08:02.259 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.259 INFO [stderr] 
Dec 17 20:08:02.259 INFO [stderr] warning: function is never used: `problem_003`
Dec 17 20:08:02.259 INFO [stderr]   --> src/main.rs:69:1
Dec 17 20:08:02.259 INFO [stderr]    |
Dec 17 20:08:02.259 INFO [stderr] 69 | fn problem_003() {
Dec 17 20:08:02.259 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.259 INFO [stderr] 
Dec 17 20:08:02.259 INFO [stderr] warning: function is never used: `is_palindome`
Dec 17 20:08:02.259 INFO [stderr]   --> src/main.rs:83:1
Dec 17 20:08:02.259 INFO [stderr]    |
Dec 17 20:08:02.259 INFO [stderr] 83 | fn is_palindome(n: &u64) -> bool {
Dec 17 20:08:02.259 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.259 INFO [stderr] 
Dec 17 20:08:02.259 INFO [stderr] warning: function is never used: `problem_004`
Dec 17 20:08:02.259 INFO [stderr]   --> src/main.rs:91:1
Dec 17 20:08:02.259 INFO [stderr]    |
Dec 17 20:08:02.259 INFO [stderr] 91 | fn problem_004() {
Dec 17 20:08:02.259 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.259 INFO [stderr] 
Dec 17 20:08:02.259 INFO [stderr] warning: function is never used: `problem_005`
Dec 17 20:08:02.259 INFO [stderr]    --> src/main.rs:125:1
Dec 17 20:08:02.259 INFO [stderr]     |
Dec 17 20:08:02.259 INFO [stderr] 125 | fn problem_005() {
Dec 17 20:08:02.259 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.259 INFO [stderr] 
Dec 17 20:08:02.259 INFO [stderr] warning: function is never used: `problem_006`
Dec 17 20:08:02.260 INFO [stderr]    --> src/main.rs:141:1
Dec 17 20:08:02.260 INFO [stderr]     |
Dec 17 20:08:02.260 INFO [stderr] 141 | fn problem_006() {
Dec 17 20:08:02.260 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.260 INFO [stderr] 
Dec 17 20:08:02.260 INFO [stderr] warning: function is never used: `is_prime`
Dec 17 20:08:02.260 INFO [stderr]    --> src/main.rs:162:1
Dec 17 20:08:02.260 INFO [stderr]     |
Dec 17 20:08:02.260 INFO [stderr] 162 | fn is_prime(n: &u64) -> bool {
Dec 17 20:08:02.260 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.260 INFO [stderr] 
Dec 17 20:08:02.260 INFO [stderr] warning: function is never used: `problem_007`
Dec 17 20:08:02.260 INFO [stderr]    --> src/main.rs:168:1
Dec 17 20:08:02.260 INFO [stderr]     |
Dec 17 20:08:02.260 INFO [stderr] 168 | fn problem_007() {
Dec 17 20:08:02.260 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.260 INFO [stderr] 
Dec 17 20:08:02.260 INFO [stderr] warning: function is never used: `problem_008`
Dec 17 20:08:02.260 INFO [stderr]    --> src/main.rs:182:1
Dec 17 20:08:02.260 INFO [stderr]     |
Dec 17 20:08:02.260 INFO [stderr] 182 | fn problem_008() {
Dec 17 20:08:02.260 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.260 INFO [stderr] 
Dec 17 20:08:02.260 INFO [stderr] warning: function is never used: `pythagorean_triplet`
Dec 17 20:08:02.260 INFO [stderr]    --> src/main.rs:230:1
Dec 17 20:08:02.260 INFO [stderr]     |
Dec 17 20:08:02.260 INFO [stderr] 230 | fn pythagorean_triplet(a: u64, b: u64, c: u64) -> Option<u64> {
Dec 17 20:08:02.260 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.260 INFO [stderr] 
Dec 17 20:08:02.260 INFO [stderr] warning: function is never used: `problem_009`
Dec 17 20:08:02.260 INFO [stderr]    --> src/main.rs:246:1
Dec 17 20:08:02.260 INFO [stderr]     |
Dec 17 20:08:02.260 INFO [stderr] 246 | fn problem_009() {
Dec 17 20:08:02.260 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.260 INFO [stderr] 
Dec 17 20:08:02.260 INFO [stderr] warning: function is never used: `problem_010`
Dec 17 20:08:02.260 INFO [stderr]    --> src/main.rs:266:1
Dec 17 20:08:02.260 INFO [stderr]     |
Dec 17 20:08:02.260 INFO [stderr] 266 | fn problem_010() {
Dec 17 20:08:02.260 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.260 INFO [stderr] 
Dec 17 20:08:02.260 INFO [stderr] warning: function is never used: `problem_011`
Dec 17 20:08:02.260 INFO [stderr]    --> src/main.rs:280:1
Dec 17 20:08:02.260 INFO [stderr]     |
Dec 17 20:08:02.260 INFO [stderr] 280 | fn problem_011() {
Dec 17 20:08:02.260 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.260 INFO [stderr] 
Dec 17 20:08:02.260 INFO [stderr] warning: function is never used: `factors`
Dec 17 20:08:02.260 INFO [stderr]    --> src/main.rs:372:1
Dec 17 20:08:02.260 INFO [stderr]     |
Dec 17 20:08:02.260 INFO [stderr] 372 | fn factors<'a>(n: u64) -> Vec<u64> {
Dec 17 20:08:02.260 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.260 INFO [stderr] 
Dec 17 20:08:02.260 INFO [stderr] warning: function is never used: `triangle_number`
Dec 17 20:08:02.260 INFO [stderr]    --> src/main.rs:383:1
Dec 17 20:08:02.260 INFO [stderr]     |
Dec 17 20:08:02.260 INFO [stderr] 383 | fn triangle_number(n: u64) -> u64 {
Dec 17 20:08:02.260 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.260 INFO [stderr] 
Dec 17 20:08:02.260 INFO [stderr] warning: function is never used: `problem_012`
Dec 17 20:08:02.260 INFO [stderr]    --> src/main.rs:389:1
Dec 17 20:08:02.260 INFO [stderr]     |
Dec 17 20:08:02.260 INFO [stderr] 389 | fn problem_012<'a>() {
Dec 17 20:08:02.260 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^
Dec 17 20:08:02.260 INFO [stderr] 
Dec 17 20:08:02.260 INFO [stderr] warning: function is never used: `problem_013`
Dec 17 20:08:02.260 INFO [stderr]    --> src/main.rs:403:1
Dec 17 20:08:02.260 INFO [stderr]     |
Dec 17 20:08:02.260 INFO [stderr] 403 | fn problem_013() {
Dec 17 20:08:02.260 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 20:08:02.260 INFO [stderr] 
Dec 17 20:08:02.261 INFO [stderr] warning: comparison is useless due to type limits
Dec 17 20:08:02.261 INFO [stderr]    --> src/main.rs:315:31
Dec 17 20:08:02.261 INFO [stderr]     |
Dec 17 20:08:02.261 INFO [stderr] 315 |         if is.iter().all(|&i| 0 <= i && i < (SLEN * SLEN) as usize && (i / SLEN as usize) == y) {
Dec 17 20:08:02.261 INFO [stderr]     |                               ^^^^^^
Dec 17 20:08:02.261 INFO [stderr]     |
Dec 17 20:08:02.261 INFO [stderr]     = note: #[warn(unused_comparisons)] on by default
Dec 17 20:08:02.261 INFO [stderr] 
Dec 17 20:08:02.261 INFO [stderr] warning: comparison is useless due to type limits
Dec 17 20:08:02.261 INFO [stderr]    --> src/main.rs:326:31
Dec 17 20:08:02.261 INFO [stderr]     |
Dec 17 20:08:02.261 INFO [stderr] 326 |         if is.iter().all(|&i| 0 <= i && i < (SLEN * SLEN) as usize && (i % SLEN as usize) == x) {
Dec 17 20:08:02.261 INFO [stderr]     |                               ^^^^^^
Dec 17 20:08:02.261 INFO [stderr] 
Dec 17 20:08:02.261 INFO [stderr] warning: comparison is useless due to type limits
Dec 17 20:08:02.261 INFO [stderr]    --> src/main.rs:337:31
Dec 17 20:08:02.261 INFO [stderr]     |
Dec 17 20:08:02.261 INFO [stderr] 337 |         if is.iter().all(|&i| 0 <= i && i < (SLEN * SLEN) as usize && (i % SLEN as usize) >= x && (i / SLEN as usize) >= y) {
Dec 17 20:08:02.261 INFO [stderr]     |                               ^^^^^^
Dec 17 20:08:02.261 INFO [stderr] 
Dec 17 20:08:02.261 INFO [stderr] warning: comparison is useless due to type limits
Dec 17 20:08:02.261 INFO [stderr]    --> src/main.rs:348:31
Dec 17 20:08:02.261 INFO [stderr]     |
Dec 17 20:08:02.261 INFO [stderr] 348 |         if is.iter().all(|&i| 0 <= i && i < (SLEN * SLEN) as usize && (i % SLEN as usize) <= x && (i / SLEN as usize) >= y) {
Dec 17 20:08:02.261 INFO [stderr]     |                               ^^^^^^
Dec 17 20:08:02.261 INFO [stderr] 
Dec 17 20:08:02.289 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.39s
Dec 17 20:08:03.424 INFO running `"docker" "inspect" "342fc528a54f46fdb17b9f3029dccfcc55ecaab310e138947f0348bc3e338088"`
Dec 17 20:08:03.674 INFO running `"docker" "rm" "-f" "342fc528a54f46fdb17b9f3029dccfcc55ecaab310e138947f0348bc3e338088"`
Dec 17 20:08:04.030 INFO [stdout] 342fc528a54f46fdb17b9f3029dccfcc55ecaab310e138947f0348bc3e338088