[INFO] crate luhn2 0.1.2 is already in cache
[INFO] extracting crate luhn2 0.1.2 into work/ex/clippy-test-run/sources/stable/reg/luhn2/0.1.2
[INFO] extracting crate luhn2 0.1.2 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/luhn2/0.1.2
[INFO] validating manifest of luhn2-0.1.2 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 luhn2-0.1.2 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 luhn2-0.1.2
[INFO] finished frobbing luhn2-0.1.2
[INFO] frobbed toml for luhn2-0.1.2 written to work/ex/clippy-test-run/sources/stable/reg/luhn2/0.1.2/Cargo.toml
[INFO] started frobbing luhn2-0.1.2
[INFO] finished frobbing luhn2-0.1.2
[INFO] frobbed toml for luhn2-0.1.2 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/luhn2/0.1.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 luhn2-0.1.2 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/luhn2/0.1.2:/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] c29adb1ebfa7750adaa433af23a28cda6ccf0a37b5e485529667e159a96a4b19
[INFO] running `"docker" "start" "-a" "c29adb1ebfa7750adaa433af23a28cda6ccf0a37b5e485529667e159a96a4b19"`
[INFO] [stderr]     Checking num-digitize v0.4.2
[INFO] [stderr]     Checking luhn2 v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     return luhn % 10 == 0;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `luhn % 10 == 0`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/lib.rs:12:39
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn take_digits<F>(card_number_digits: &Vec<i8>, mut take_function: F) -> Vec<i8>
[INFO] [stderr]    |                                       ^^^^^^^^ help: change this to: `&[i8]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/lib.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn sum(vector: &Vec<i8>) -> u64 {
[INFO] [stderr]    |                ^^^^^^^^ help: change this to: `&[i8]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     return luhn % 10 == 0;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `luhn % 10 == 0`
[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/lib.rs:94:26
[INFO] [stderr]    |
[INFO] [stderr] 94 |         assert!(validate(49927398716));
[INFO] [stderr]    |                          ^^^^^^^^^^^ help: consider: `49_927_398_716`
[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/lib.rs:95:26
[INFO] [stderr]    |
[INFO] [stderr] 95 |         assert!(validate(1234567812345670));
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^ help: consider: `1_234_567_812_345_670`
[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: long literal lacking separators
[INFO] [stderr]   --> src/lib.rs:96:26
[INFO] [stderr]    |
[INFO] [stderr] 96 |         assert!(validate(79927398713));
[INFO] [stderr]    |                          ^^^^^^^^^^^ help: consider: `79_927_398_713`
[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: long literal lacking separators
[INFO] [stderr]    --> src/lib.rs:101:26
[INFO] [stderr]     |
[INFO] [stderr] 101 |         assert!(validate(4242424242424241) == false);
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^ help: consider: `4_242_424_242_424_241`
[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: long literal lacking separators
[INFO] [stderr]    --> src/lib.rs:102:26
[INFO] [stderr]     |
[INFO] [stderr] 102 |         assert!(validate(49927398717) == false);
[INFO] [stderr]     |                          ^^^^^^^^^^^ help: consider: `49_927_398_717`
[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: long literal lacking separators
[INFO] [stderr]    --> src/lib.rs:103:26
[INFO] [stderr]     |
[INFO] [stderr] 103 |         assert!(validate(1234567812345678) == false);
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^ help: consider: `1_234_567_812_345_678`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/lib.rs:12:39
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn take_digits<F>(card_number_digits: &Vec<i8>, mut take_function: F) -> Vec<i8>
[INFO] [stderr]    |                                       ^^^^^^^^ help: change this to: `&[i8]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/lib.rs:26:16
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn sum(vector: &Vec<i8>) -> u64 {
[INFO] [stderr]    |                ^^^^^^^^ help: change this to: `&[i8]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/lib.rs:101:17
[INFO] [stderr]     |
[INFO] [stderr] 101 |         assert!(validate(4242424242424241) == false);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!validate(4242424242424241)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/lib.rs:102:17
[INFO] [stderr]     |
[INFO] [stderr] 102 |         assert!(validate(49927398717) == false);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!validate(49927398717)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against false can be replaced by a negation
[INFO] [stderr]    --> src/lib.rs:103:17
[INFO] [stderr]     |
[INFO] [stderr] 103 |         assert!(validate(1234567812345678) == false);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try simplifying it as shown: `!validate(1234567812345678)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.88s
[INFO] running `"docker" "inspect" "c29adb1ebfa7750adaa433af23a28cda6ccf0a37b5e485529667e159a96a4b19"`
[INFO] running `"docker" "rm" "-f" "c29adb1ebfa7750adaa433af23a28cda6ccf0a37b5e485529667e159a96a4b19"`
[INFO] [stdout] c29adb1ebfa7750adaa433af23a28cda6ccf0a37b5e485529667e159a96a4b19