[INFO] crate mailchecker 3.2.13 is already in cache
[INFO] extracting crate mailchecker 3.2.13 into work/ex/clippy-test-run/sources/stable/reg/mailchecker/3.2.13
[INFO] extracting crate mailchecker 3.2.13 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/mailchecker/3.2.13
[INFO] validating manifest of mailchecker-3.2.13 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 mailchecker-3.2.13 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 mailchecker-3.2.13
[INFO] finished frobbing mailchecker-3.2.13
[INFO] frobbed toml for mailchecker-3.2.13 written to work/ex/clippy-test-run/sources/stable/reg/mailchecker/3.2.13/Cargo.toml
[INFO] started frobbing mailchecker-3.2.13
[INFO] finished frobbing mailchecker-3.2.13
[INFO] frobbed toml for mailchecker-3.2.13 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/mailchecker/3.2.13/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 mailchecker-3.2.13 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/reg/mailchecker/3.2.13:/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] 6df49a2e23a6f4a1c44b61a95357bd6bed1515a1e8d198868ef96c7489ed0695
[INFO] running `"docker" "start" "-a" "6df49a2e23a6f4a1c44b61a95357bd6bed1515a1e8d198868ef96c7489ed0695"`
[INFO] [stderr]     Checking ascii_utils v0.9.3
[INFO] [stderr]     Checking fast_chemail v0.9.5
[INFO] [stderr]     Checking mailchecker v3.2.13 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:64:3
[INFO] [stderr]    |
[INFO] [stderr] 64 |   return !email_domain_is_in_blacklist;
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `!email_domain_is_in_blacklist`
[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: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:75:3
[INFO] [stderr]    |
[INFO] [stderr] 75 |   return BLACKLIST.contains(&domain)
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `BLACKLIST.contains(&domain)`
[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/lib.rs:92:3
[INFO] [stderr]    |
[INFO] [stderr] 92 |   return BLACKLIST.to_vec();
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `BLACKLIST.to_vec()`
[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: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:64:3
[INFO] [stderr]    |
[INFO] [stderr] 64 |   return !email_domain_is_in_blacklist;
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `!email_domain_is_in_blacklist`
[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: unneeded return statement
[INFO] [stderr]   --> src/lib.rs:75:3
[INFO] [stderr]    |
[INFO] [stderr] 75 |   return BLACKLIST.contains(&domain)
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `BLACKLIST.contains(&domain)`
[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/lib.rs:92:3
[INFO] [stderr]    |
[INFO] [stderr] 92 |   return BLACKLIST.to_vec();
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `BLACKLIST.to_vec()`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/lib.rs:68:29
[INFO] [stderr]    |
[INFO] [stderr] 68 |   let domains = email.split("@").skip(1).collect::<String>();
[INFO] [stderr]    |                             ^^^ help: try using a char instead: `'@'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/lib.rs:70:3
[INFO] [stderr]    |
[INFO] [stderr] 70 |   (1..domain_part.len()+1).map(|i| (domain_part[0..i]).iter().map(|&x| x).collect::<Vec<&str>>().join(".")).collect::<Vec<String>>()
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(1..=domain_part.len())`
[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: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/lib.rs:70:36
[INFO] [stderr]    |
[INFO] [stderr] 70 |   (1..domain_part.len()+1).map(|i| (domain_part[0..i]).iter().map(|&x| x).collect::<Vec<&str>>().join(".")).collect::<Vec<String>>()
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `(domain_part[0..i]).iter().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/lib.rs:68:29
[INFO] [stderr]    |
[INFO] [stderr] 68 |   let domains = email.split("@").skip(1).collect::<String>();
[INFO] [stderr]    |                             ^^^ help: try using a char instead: `'@'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]   --> src/lib.rs:70:3
[INFO] [stderr]    |
[INFO] [stderr] 70 |   (1..domain_part.len()+1).map(|i| (domain_part[0..i]).iter().map(|&x| x).collect::<Vec<&str>>().join(".")).collect::<Vec<String>>()
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `(1..=domain_part.len())`
[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: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/lib.rs:70:36
[INFO] [stderr]    |
[INFO] [stderr] 70 |   (1..domain_part.len()+1).map(|i| (domain_part[0..i]).iter().map(|&x| x).collect::<Vec<&str>>().join(".")).collect::<Vec<String>>()
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `(domain_part[0..i]).iter().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.42s
[INFO] running `"docker" "inspect" "6df49a2e23a6f4a1c44b61a95357bd6bed1515a1e8d198868ef96c7489ed0695"`
[INFO] running `"docker" "rm" "-f" "6df49a2e23a6f4a1c44b61a95357bd6bed1515a1e8d198868ef96c7489ed0695"`
[INFO] [stdout] 6df49a2e23a6f4a1c44b61a95357bd6bed1515a1e8d198868ef96c7489ed0695