[INFO] updating cached repository kevbot18/speed_primes
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kevbot18/speed_primes
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kevbot18/speed_primes" "work/ex/clippy-test-run/sources/stable/gh/kevbot18/speed_primes"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/kevbot18/speed_primes'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kevbot18/speed_primes" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kevbot18/speed_primes"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kevbot18/speed_primes'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bd2cb988f8dc983f5b2b714ec20bedc733db5380
[INFO] sha for GitHub repo kevbot18/speed_primes: bd2cb988f8dc983f5b2b714ec20bedc733db5380
[INFO] validating manifest of kevbot18/speed_primes 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 kevbot18/speed_primes 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 kevbot18/speed_primes
[INFO] finished frobbing kevbot18/speed_primes
[INFO] frobbed toml for kevbot18/speed_primes written to work/ex/clippy-test-run/sources/stable/gh/kevbot18/speed_primes/Cargo.toml
[INFO] started frobbing kevbot18/speed_primes
[INFO] finished frobbing kevbot18/speed_primes
[INFO] frobbed toml for kevbot18/speed_primes written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/kevbot18/speed_primes/Cargo.toml
[INFO] crate kevbot18/speed_primes 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 kevbot18/speed_primes against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/kevbot18/speed_primes:/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] 2c3bcf8fc191a116c7f00fdb998bcff1e30ba1a820c29db2d65d6ee41120612f
[INFO] running `"docker" "start" "-a" "2c3bcf8fc191a116c7f00fdb998bcff1e30ba1a820c29db2d65d6ee41120612f"`
[INFO] [stderr]     Checking speed_primes v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:109:2
[INFO] [stderr]    --> src/main.rs:109:2
[INFO] [stderr]     |
[INFO] [stderr]     |
[INFO] [stderr] 109 |     return count;
[INFO] [stderr] 109 |     return count;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `count`
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `count`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr] 
[INFO] [stderr]   --> src/main.rs:64:18
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    |
[INFO] [stderr]   --> src/main.rs:64:18
[INFO] [stderr]    |
[INFO] [stderr] 64 |     is_prime = vec![0b11111111; elements as usize]; // assigns 1's to every digit
[INFO] [stderr]    |                     ^^^^^^^^^^ help: consider: `0b1111_1111`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 64 |     is_prime = vec![0b11111111; elements as usize]; // assigns 1's to every digit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    |                     ^^^^^^^^^^ help: consider: `0b1111_1111`
[INFO] [stderr]    --> src/main.rs:116:3
[INFO] [stderr]     |
[INFO] [stderr]    |
[INFO] [stderr] 116 |         return n;
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]     |         ^^^^^^^^^ help: remove `return` as shown: `n`
[INFO] [stderr]     |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr] 
[INFO] [stderr]    --> src/main.rs:116:3
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]     |
[INFO] [stderr]    --> src/main.rs:121:4
[INFO] [stderr] 116 |         return n;
[INFO] [stderr]     |
[INFO] [stderr]     |         ^^^^^^^^^ help: remove `return` as shown: `n`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:121:4
[INFO] [stderr]     |
[INFO] [stderr] 121 |             return small;
[INFO] [stderr] 121 |             return small;
[INFO] [stderr]     |             ^^^^^^^^^^^^^ help: remove `return` as shown: `small`
[INFO] [stderr]     |
[INFO] [stderr]     |             ^^^^^^^^^^^^^ help: remove `return` as shown: `small`
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr]     |
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr]    --> src/main.rs:123:4
[INFO] [stderr] 
[INFO] [stderr]     |
[INFO] [stderr] 123 |             return large;
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]     |             ^^^^^^^^^^^^^ help: remove `return` as shown: `large`
[INFO] [stderr]    --> src/main.rs:123:4
[INFO] [stderr]     |
[INFO] [stderr]     |
[INFO] [stderr] 123 |             return large;
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr]     |             ^^^^^^^^^^^^^ help: remove `return` as shown: `large`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_prime` is never read
[INFO] [stderr]   --> src/main.rs:60:10
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut is_prime: Vec<u8> = Vec::with_capacity(elements as usize);
[INFO] [stderr]    |             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_prime` is never read
[INFO] [stderr]   --> src/main.rs:60:10
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut is_prime: Vec<u8> = Vec::with_capacity(elements as usize);
[INFO] [stderr]    |             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `e` is only used to index `is_prime`.
[INFO] [stderr]   --> src/main.rs:66:11
[INFO] [stderr]    |
[INFO] [stderr] 66 |     for e in 0..elements as usize {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 66 |     for <item> in is_prime.iter_mut().take(elements as usize) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `e` is only used to index `is_prime`.
[INFO] [stderr]   --> src/main.rs:66:11
[INFO] [stderr]    |
[INFO] [stderr] 66 |     for e in 0..elements as usize {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 66 |     for <item> in is_prime.iter_mut().take(elements as usize) {
[INFO] [stderr]    |         ^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "2c3bcf8fc191a116c7f00fdb998bcff1e30ba1a820c29db2d65d6ee41120612f"`
[INFO] running `"docker" "rm" "-f" "2c3bcf8fc191a116c7f00fdb998bcff1e30ba1a820c29db2d65d6ee41120612f"`
[INFO] [stdout] 2c3bcf8fc191a116c7f00fdb998bcff1e30ba1a820c29db2d65d6ee41120612f