[INFO] updating cached repository Januson/rustler
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Januson/rustler
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Januson/rustler" "work/ex/clippy-test-run/sources/stable/gh/Januson/rustler"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Januson/rustler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Januson/rustler" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Januson/rustler"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Januson/rustler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7852ce24367b7a07ee7875e00c78a56941c470f1
[INFO] sha for GitHub repo Januson/rustler: 7852ce24367b7a07ee7875e00c78a56941c470f1
[INFO] validating manifest of Januson/rustler 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 Januson/rustler 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 Januson/rustler
[INFO] finished frobbing Januson/rustler
[INFO] frobbed toml for Januson/rustler written to work/ex/clippy-test-run/sources/stable/gh/Januson/rustler/Cargo.toml
[INFO] started frobbing Januson/rustler
[INFO] finished frobbing Januson/rustler
[INFO] frobbed toml for Januson/rustler written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Januson/rustler/Cargo.toml
[INFO] crate Januson/rustler 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 Januson/rustler against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Januson/rustler:/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 -Dclippy::into_iter_on_array" "-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] e25cf38cf546323505f5acfe8f36ac843a0d0aec0e72a006d5d4560486b10ffb
[INFO] running `"docker" "start" "-a" "e25cf38cf546323505f5acfe8f36ac843a0d0aec0e72a006d5d4560486b10ffb"`
[INFO] [stderr]     Checking rustler v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/euler/p004.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     return max_pal;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ help: remove `return` as shown: `max_pal`
[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] warning: long literal lacking separators
[INFO] [stderr]   --> src/main.rs:19:67
[INFO] [stderr]    |
[INFO] [stderr] 19 |     print_problem(3, "Largest prime factor", largest_prime_factor(600851475143));
[INFO] [stderr]    |                                                                   ^^^^^^^^^^^^ help: consider: `600_851_475_143`
[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] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/euler/p001.rs:15:37
[INFO] [stderr]    |
[INFO] [stderr] 15 |     assert_eq!(sum_multiples(1000), 233168);
[INFO] [stderr]    |                                     ^^^^^^ help: consider: `233_168`
[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] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/euler/p002.rs:35:36
[INFO] [stderr]    |
[INFO] [stderr] 35 |         assert_eq!(sum_even_fib(), 4613732);
[INFO] [stderr]    |                                    ^^^^^^^ help: consider: `4_613_732`
[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] warning: unneeded return statement
[INFO] [stderr]   --> src/euler/p004.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     return max_pal;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ help: remove `return` as shown: `max_pal`
[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] warning: long literal lacking separators
[INFO] [stderr]   --> src/main.rs:19:67
[INFO] [stderr]    |
[INFO] [stderr] 19 |     print_problem(3, "Largest prime factor", largest_prime_factor(600851475143));
[INFO] [stderr]    |                                                                   ^^^^^^^^^^^^ help: consider: `600_851_475_143`
[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] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/euler/p003.rs:21:16
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn is_prime(x: &u64) -> bool {
[INFO] [stderr]    |                ^^^^ help: consider passing by value instead: `u64`
[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: an inclusive range would be more readable
[INFO] [stderr]   --> src/euler/p003.rs:22:14
[INFO] [stderr]    |
[INFO] [stderr] 22 |     for i in 2..(x / 2 + 1) {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^ help: use: `2..=x / 2`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/euler/p004.rs:6:9
[INFO] [stderr]    |
[INFO] [stderr] 6  | /         let db;
[INFO] [stderr] 7  | |         if a % 11 == 0 {
[INFO] [stderr] 8  | |             b = 999;
[INFO] [stderr] 9  | |             db = 1;
[INFO] [stderr] ...  |
[INFO] [stderr] 12 | |             db = 11;
[INFO] [stderr] 13 | |         }
[INFO] [stderr]    | |_________^ help: it is more idiomatic to write: `let db = if a % 11 == 0 { ..; 1 } else { ..; 11 };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]  --> src/euler/p006.rs:4:14
[INFO] [stderr]   |
[INFO] [stderr] 4 |     for i in 1..(n + 1) {
[INFO] [stderr]   |              ^^^^^^^^^^ help: use: `1..=n`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/euler/p003.rs:21:16
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn is_prime(x: &u64) -> bool {
[INFO] [stderr]    |                ^^^^ help: consider passing by value instead: `u64`
[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: an inclusive range would be more readable
[INFO] [stderr]   --> src/euler/p003.rs:22:14
[INFO] [stderr]    |
[INFO] [stderr] 22 |     for i in 2..(x / 2 + 1) {
[INFO] [stderr]    |              ^^^^^^^^^^^^^^ help: use: `2..=x / 2`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/euler/p004.rs:6:9
[INFO] [stderr]    |
[INFO] [stderr] 6  | /         let db;
[INFO] [stderr] 7  | |         if a % 11 == 0 {
[INFO] [stderr] 8  | |             b = 999;
[INFO] [stderr] 9  | |             db = 1;
[INFO] [stderr] ...  |
[INFO] [stderr] 12 | |             db = 11;
[INFO] [stderr] 13 | |         }
[INFO] [stderr]    | |_________^ help: it is more idiomatic to write: `let db = if a % 11 == 0 { ..; 1 } else { ..; 11 };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]  --> src/euler/p006.rs:4:14
[INFO] [stderr]   |
[INFO] [stderr] 4 |     for i in 1..(n + 1) {
[INFO] [stderr]   |              ^^^^^^^^^^ help: use: `1..=n`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `"docker" "inspect" "e25cf38cf546323505f5acfe8f36ac843a0d0aec0e72a006d5d4560486b10ffb"`
[INFO] running `"docker" "rm" "-f" "e25cf38cf546323505f5acfe8f36ac843a0d0aec0e72a006d5d4560486b10ffb"`
[INFO] [stdout] e25cf38cf546323505f5acfe8f36ac843a0d0aec0e72a006d5d4560486b10ffb