[INFO] updating cached repository marony/rust_euler
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/marony/rust_euler
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/marony/rust_euler" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/marony/rust_euler"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/marony/rust_euler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/marony/rust_euler" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/marony/rust_euler"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/marony/rust_euler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8cee0b518c8c4b22a4287b91f05ce0f44ff42878
[INFO] sha for GitHub repo marony/rust_euler: 8cee0b518c8c4b22a4287b91f05ce0f44ff42878
[INFO] validating manifest of marony/rust_euler 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 marony/rust_euler 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 marony/rust_euler
[INFO] finished frobbing marony/rust_euler
[INFO] frobbed toml for marony/rust_euler written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/marony/rust_euler/Cargo.toml
[INFO] started frobbing marony/rust_euler
[INFO] finished frobbing marony/rust_euler
[INFO] frobbed toml for marony/rust_euler written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/marony/rust_euler/Cargo.toml
[INFO] crate marony/rust_euler 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 marony/rust_euler against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-0/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/marony/rust_euler:/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" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8411fed779188c58b067617570774158e8c550b384225f7a95c15c13607dbb64
[INFO] running `"docker" "start" "-a" "8411fed779188c58b067617570774158e8c550b384225f7a95c15c13607dbb64"`
[INFO] [stderr]     Checking euler v0.1.0 (/opt/crater/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: struct is never constructed: `Fib`
[INFO] [stderr]   --> src/main.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct Fib {
[INFO] [stderr]    | ^^^^^^^^^^
[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: struct is never constructed: `Fib`
[INFO] [stderr]   --> src/main.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct Fib {
[INFO] [stderr]    | ^^^^^^^^^^
[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 0.57s
[INFO] running `"docker" "inspect" "8411fed779188c58b067617570774158e8c550b384225f7a95c15c13607dbb64"`
[INFO] running `"docker" "rm" "-f" "8411fed779188c58b067617570774158e8c550b384225f7a95c15c13607dbb64"`
[INFO] [stdout] 8411fed779188c58b067617570774158e8c550b384225f7a95c15c13607dbb64