[INFO] updating cached repository CodeGradox/sieve_of_eratosthenes
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/CodeGradox/sieve_of_eratosthenes
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/CodeGradox/sieve_of_eratosthenes" "work/ex/clippy-test-run/sources/stable/gh/CodeGradox/sieve_of_eratosthenes"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/CodeGradox/sieve_of_eratosthenes'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CodeGradox/sieve_of_eratosthenes" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/CodeGradox/sieve_of_eratosthenes"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/CodeGradox/sieve_of_eratosthenes'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 88ab560e2a558f9c1189dc19994adbd4ae2cd2b9
[INFO] sha for GitHub repo CodeGradox/sieve_of_eratosthenes: 88ab560e2a558f9c1189dc19994adbd4ae2cd2b9
[INFO] validating manifest of CodeGradox/sieve_of_eratosthenes on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of CodeGradox/sieve_of_eratosthenes on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing CodeGradox/sieve_of_eratosthenes
[INFO] finished frobbing CodeGradox/sieve_of_eratosthenes
[INFO] frobbed toml for CodeGradox/sieve_of_eratosthenes written to work/ex/clippy-test-run/sources/stable/gh/CodeGradox/sieve_of_eratosthenes/Cargo.toml
[INFO] started frobbing CodeGradox/sieve_of_eratosthenes
[INFO] finished frobbing CodeGradox/sieve_of_eratosthenes
[INFO] frobbed toml for CodeGradox/sieve_of_eratosthenes written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/CodeGradox/sieve_of_eratosthenes/Cargo.toml
[INFO] crate CodeGradox/sieve_of_eratosthenes has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting CodeGradox/sieve_of_eratosthenes against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/CodeGradox/sieve_of_eratosthenes:/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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e70af630f81e6bf97fb3f9356c49f059b489868ed6062e0a9eff0c2c5c49af4c
[INFO] running `"docker" "start" "-a" "e70af630f81e6bf97fb3f9356c49f059b489868ed6062e0a9eff0c2c5c49af4c"`
[INFO] [stderr]     Checking sieve_of_eratosthenes v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:19:15
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn mask(num: &usize) -> u8 {
[INFO] [stderr]    |                  ^^^^^^ help: consider passing by value instead: `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:26:31
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn cross_out(&mut self, num: &usize) {
[INFO] [stderr]    |                                  ^^^^^^ help: consider passing by value instead: `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:32:26
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn is_prime(&self, num: &usize) -> bool {
[INFO] [stderr]    |                             ^^^^^^ help: consider passing by value instead: `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:58:32
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn next_prime(&self, num: &usize) -> Option<usize> {
[INFO] [stderr]    |                                   ^^^^^^ help: consider passing by value instead: `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:19:15
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn mask(num: &usize) -> u8 {
[INFO] [stderr]    |                  ^^^^^^ help: consider passing by value instead: `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:26:31
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn cross_out(&mut self, num: &usize) {
[INFO] [stderr]    |                                  ^^^^^^ help: consider passing by value instead: `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:32:26
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn is_prime(&self, num: &usize) -> bool {
[INFO] [stderr]    |                             ^^^^^^ help: consider passing by value instead: `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:58:32
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn next_prime(&self, num: &usize) -> Option<usize> {
[INFO] [stderr]    |                                   ^^^^^^ help: consider passing by value instead: `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "e70af630f81e6bf97fb3f9356c49f059b489868ed6062e0a9eff0c2c5c49af4c"`
[INFO] running `"docker" "rm" "-f" "e70af630f81e6bf97fb3f9356c49f059b489868ed6062e0a9eff0c2c5c49af4c"`
[INFO] [stdout] e70af630f81e6bf97fb3f9356c49f059b489868ed6062e0a9eff0c2c5c49af4c