[INFO] updating cached repository https://github.com/marony/rust_euler
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8cee0b518c8c4b22a4287b91f05ce0f44ff42878
[INFO] checking marony/rust_euler against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarony%2Frust_euler" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/marony/rust_euler 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/marony/rust_euler
[INFO] finished tweaking git repo https://github.com/marony/rust_euler
[INFO] tweaked toml for git repo https://github.com/marony/rust_euler written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/marony/rust_euler already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 4a870d368de3b4cfe3b99b30ca728149c54c3846eadfbc274e7029c2e2ae191d
[INFO] running `"docker" "start" "-a" "4a870d368de3b4cfe3b99b30ca728149c54c3846eadfbc274e7029c2e2ae191d"`
[INFO] [stderr]     Checking euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `problem_001`
[INFO] [stderr]   --> src/main.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn problem_001() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/main.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn new() -> Fib {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_002`
[INFO] [stderr]   --> src/main.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn problem_002() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `prime_factors`
[INFO] [stderr]   --> src/main.rs:56:1
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn prime_factors<'a>(n: u64, xs: &'a mut Vec<u64>) -> &'a Vec<u64> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_003`
[INFO] [stderr]   --> src/main.rs:69:1
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn problem_003() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_palindome`
[INFO] [stderr]   --> src/main.rs:83:1
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn is_palindome(n: &u64) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_004`
[INFO] [stderr]   --> src/main.rs:91:1
[INFO] [stderr]    |
[INFO] [stderr] 91 | fn problem_004() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_005`
[INFO] [stderr]    --> src/main.rs:125:1
[INFO] [stderr]     |
[INFO] [stderr] 125 | fn problem_005() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_006`
[INFO] [stderr]    --> src/main.rs:141:1
[INFO] [stderr]     |
[INFO] [stderr] 141 | fn problem_006() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_prime`
[INFO] [stderr]    --> src/main.rs:162:1
[INFO] [stderr]     |
[INFO] [stderr] 162 | fn is_prime(n: &u64) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_007`
[INFO] [stderr]    --> src/main.rs:168:1
[INFO] [stderr]     |
[INFO] [stderr] 168 | fn problem_007() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_008`
[INFO] [stderr]    --> src/main.rs:182:1
[INFO] [stderr]     |
[INFO] [stderr] 182 | fn problem_008() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pythagorean_triplet`
[INFO] [stderr]    --> src/main.rs:230:1
[INFO] [stderr]     |
[INFO] [stderr] 230 | fn pythagorean_triplet(a: u64, b: u64, c: u64) -> Option<u64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_009`
[INFO] [stderr]    --> src/main.rs:246:1
[INFO] [stderr]     |
[INFO] [stderr] 246 | fn problem_009() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_010`
[INFO] [stderr]    --> src/main.rs:266:1
[INFO] [stderr]     |
[INFO] [stderr] 266 | fn problem_010() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_011`
[INFO] [stderr]    --> src/main.rs:280:1
[INFO] [stderr]     |
[INFO] [stderr] 280 | fn problem_011() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `factors`
[INFO] [stderr]    --> src/main.rs:372:1
[INFO] [stderr]     |
[INFO] [stderr] 372 | fn factors<'a>(n: u64) -> Vec<u64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `triangle_number`
[INFO] [stderr]    --> src/main.rs:383:1
[INFO] [stderr]     |
[INFO] [stderr] 383 | fn triangle_number(n: u64) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_012`
[INFO] [stderr]    --> src/main.rs:389:1
[INFO] [stderr]     |
[INFO] [stderr] 389 | fn problem_012<'a>() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_013`
[INFO] [stderr]    --> src/main.rs:403:1
[INFO] [stderr]     |
[INFO] [stderr] 403 | fn problem_013() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/main.rs:315:31
[INFO] [stderr]     |
[INFO] [stderr] 315 |         if is.iter().all(|&i| 0 <= i && i < (SLEN * SLEN) as usize && (i / SLEN as usize) == y) {
[INFO] [stderr]     |                               ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/main.rs:326:31
[INFO] [stderr]     |
[INFO] [stderr] 326 |         if is.iter().all(|&i| 0 <= i && i < (SLEN * SLEN) as usize && (i % SLEN as usize) == x) {
[INFO] [stderr]     |                               ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/main.rs:337:31
[INFO] [stderr]     |
[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) {
[INFO] [stderr]     |                               ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/main.rs:348:31
[INFO] [stderr]     |
[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) {
[INFO] [stderr]     |                               ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_001`
[INFO] [stderr]   --> src/main.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn problem_001() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/main.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn new() -> Fib {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_002`
[INFO] [stderr]   --> src/main.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn problem_002() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `prime_factors`
[INFO] [stderr]   --> src/main.rs:56:1
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn prime_factors<'a>(n: u64, xs: &'a mut Vec<u64>) -> &'a Vec<u64> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_003`
[INFO] [stderr]   --> src/main.rs:69:1
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn problem_003() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_palindome`
[INFO] [stderr]   --> src/main.rs:83:1
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn is_palindome(n: &u64) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_004`
[INFO] [stderr]   --> src/main.rs:91:1
[INFO] [stderr]    |
[INFO] [stderr] 91 | fn problem_004() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_005`
[INFO] [stderr]    --> src/main.rs:125:1
[INFO] [stderr]     |
[INFO] [stderr] 125 | fn problem_005() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_006`
[INFO] [stderr]    --> src/main.rs:141:1
[INFO] [stderr]     |
[INFO] [stderr] 141 | fn problem_006() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_prime`
[INFO] [stderr]    --> src/main.rs:162:1
[INFO] [stderr]     |
[INFO] [stderr] 162 | fn is_prime(n: &u64) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_007`
[INFO] [stderr]    --> src/main.rs:168:1
[INFO] [stderr]     |
[INFO] [stderr] 168 | fn problem_007() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_008`
[INFO] [stderr]    --> src/main.rs:182:1
[INFO] [stderr]     |
[INFO] [stderr] 182 | fn problem_008() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pythagorean_triplet`
[INFO] [stderr]    --> src/main.rs:230:1
[INFO] [stderr]     |
[INFO] [stderr] 230 | fn pythagorean_triplet(a: u64, b: u64, c: u64) -> Option<u64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_009`
[INFO] [stderr]    --> src/main.rs:246:1
[INFO] [stderr]     |
[INFO] [stderr] 246 | fn problem_009() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_010`
[INFO] [stderr]    --> src/main.rs:266:1
[INFO] [stderr]     |
[INFO] [stderr] 266 | fn problem_010() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_011`
[INFO] [stderr]    --> src/main.rs:280:1
[INFO] [stderr]     |
[INFO] [stderr] 280 | fn problem_011() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `factors`
[INFO] [stderr]    --> src/main.rs:372:1
[INFO] [stderr]     |
[INFO] [stderr] 372 | fn factors<'a>(n: u64) -> Vec<u64> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `triangle_number`
[INFO] [stderr]    --> src/main.rs:383:1
[INFO] [stderr]     |
[INFO] [stderr] 383 | fn triangle_number(n: u64) -> u64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_012`
[INFO] [stderr]    --> src/main.rs:389:1
[INFO] [stderr]     |
[INFO] [stderr] 389 | fn problem_012<'a>() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `problem_013`
[INFO] [stderr]    --> src/main.rs:403:1
[INFO] [stderr]     |
[INFO] [stderr] 403 | fn problem_013() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/main.rs:315:31
[INFO] [stderr]     |
[INFO] [stderr] 315 |         if is.iter().all(|&i| 0 <= i && i < (SLEN * SLEN) as usize && (i / SLEN as usize) == y) {
[INFO] [stderr]     |                               ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/main.rs:326:31
[INFO] [stderr]     |
[INFO] [stderr] 326 |         if is.iter().all(|&i| 0 <= i && i < (SLEN * SLEN) as usize && (i % SLEN as usize) == x) {
[INFO] [stderr]     |                               ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/main.rs:337:31
[INFO] [stderr]     |
[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) {
[INFO] [stderr]     |                               ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/main.rs:348:31
[INFO] [stderr]     |
[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) {
[INFO] [stderr]     |                               ^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `"docker" "inspect" "4a870d368de3b4cfe3b99b30ca728149c54c3846eadfbc274e7029c2e2ae191d"`
[INFO] running `"docker" "rm" "-f" "4a870d368de3b4cfe3b99b30ca728149c54c3846eadfbc274e7029c2e2ae191d"`
[INFO] [stdout] 4a870d368de3b4cfe3b99b30ca728149c54c3846eadfbc274e7029c2e2ae191d