[INFO] crate hangman 1.0.0 is already in cache
[INFO] extracting crate hangman 1.0.0 into work/ex/clippy-test-run/sources/stable/reg/hangman/1.0.0
[INFO] extracting crate hangman 1.0.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/hangman/1.0.0
[INFO] validating manifest of hangman-1.0.0 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 hangman-1.0.0 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 hangman-1.0.0
[INFO] finished frobbing hangman-1.0.0
[INFO] frobbed toml for hangman-1.0.0 written to work/ex/clippy-test-run/sources/stable/reg/hangman/1.0.0/Cargo.toml
[INFO] started frobbing hangman-1.0.0
[INFO] finished frobbing hangman-1.0.0
[INFO] frobbed toml for hangman-1.0.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/hangman/1.0.0/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 hangman-1.0.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/hangman/1.0.0:/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] 406185159b8b96d5a0c166916597f53f157cc0e380bd2c1db56a26ddc5265933
[INFO] running `"docker" "start" "-a" "406185159b8b96d5a0c166916597f53f157cc0e380bd2c1db56a26ddc5265933"`
[INFO] [stderr]     Checking hangman v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/lib.rs:46:31
[INFO] [stderr]    |
[INFO] [stderr] 46 |     const SYSTEM_WORDS_FILE: &'static str = "/usr/share/dict/words";
[INFO] [stderr]    |                              -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/lib.rs:47:29
[INFO] [stderr]    |
[INFO] [stderr] 47 |     const USER_WORDS_FILE: &'static str = "/resources/words.txt";
[INFO] [stderr]    |                            -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]   --> src/lib.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     writeln!(io::stderr(), "Usage: hangman [max-word-length = 5 to 24] [number-of-attempts = 10 to 100]").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_write)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_write
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/lib.rs:46:31
[INFO] [stderr]    |
[INFO] [stderr] 46 |     const SYSTEM_WORDS_FILE: &'static str = "/usr/share/dict/words";
[INFO] [stderr]    |                              -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/lib.rs:47:29
[INFO] [stderr]    |
[INFO] [stderr] 47 |     const USER_WORDS_FILE: &'static str = "/resources/words.txt";
[INFO] [stderr]    |                            -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]   --> src/lib.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         writeln!(io::stderr(), "Word length must be between 5 and 24 (inclusive)").unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_write
[INFO] [stderr] 
[INFO] [stderr] warning: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]   --> src/lib.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         writeln!(io::stderr(), "Number of attempts must be between 10 and 100 (inclusive)").unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_write
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `idx` is used as a loop counter. Consider using `for (idx, item) in random_word.chars().enumerate()` or similar iterators
[INFO] [stderr]    --> src/lib.rs:128:14
[INFO] [stderr]     |
[INFO] [stderr] 128 |     for c in random_word.chars() {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]    --> src/lib.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 | /     match get_choice("\nDo you want to continue? [y/n]: ") {
[INFO] [stderr] 164 | |         true => Some(true),
[INFO] [stderr] 165 | |         false => None,
[INFO] [stderr] 166 | |     }
[INFO] [stderr]     | |_____^ help: consider using an if/else expression: `if get_choice("\nDo you want to continue? [y/n]: ") { Some(true) } else { None }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_bool)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] 
[INFO] [stderr] warning: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]   --> src/lib.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     writeln!(io::stderr(), "Usage: hangman [max-word-length = 5 to 24] [number-of-attempts = 10 to 100]").unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_write)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_write
[INFO] [stderr] 
[INFO] [stderr] warning: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]   --> src/lib.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |         writeln!(io::stderr(), "Word length must be between 5 and 24 (inclusive)").unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_write
[INFO] [stderr] 
[INFO] [stderr] warning: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]   --> src/lib.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |         writeln!(io::stderr(), "Number of attempts must be between 10 and 100 (inclusive)").unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_write
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `idx` is used as a loop counter. Consider using `for (idx, item) in random_word.chars().enumerate()` or similar iterators
[INFO] [stderr]    --> src/lib.rs:128:14
[INFO] [stderr]     |
[INFO] [stderr] 128 |     for c in random_word.chars() {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]    --> src/lib.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 | /     match get_choice("\nDo you want to continue? [y/n]: ") {
[INFO] [stderr] 164 | |         true => Some(true),
[INFO] [stderr] 165 | |         false => None,
[INFO] [stderr] 166 | |     }
[INFO] [stderr]     | |_____^ help: consider using an if/else expression: `if get_choice("\nDo you want to continue? [y/n]: ") { Some(true) } else { None }`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_bool)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 |     if args.len() == 0 || args.len() > 2 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `args.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stderr]   --> src/main.rs:63:16
[INFO] [stderr]    |
[INFO] [stderr] 63 |           if let Some(_) =  hangman::check_if_continue() {
[INFO] [stderr]    |  _________-      ^^^^^^^
[INFO] [stderr] 64 | |             continue;
[INFO] [stderr] 65 | |         } else {
[INFO] [stderr] 66 | |             break;
[INFO] [stderr] 67 | |         }
[INFO] [stderr]    | |_________- help: try this: `if hangman::check_if_continue().is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 |     if args.len() == 0 || args.len() > 2 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `args.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: redundant pattern matching, consider using `is_some()`
[INFO] [stderr]   --> src/main.rs:63:16
[INFO] [stderr]    |
[INFO] [stderr] 63 |           if let Some(_) =  hangman::check_if_continue() {
[INFO] [stderr]    |  _________-      ^^^^^^^
[INFO] [stderr] 64 | |             continue;
[INFO] [stderr] 65 | |         } else {
[INFO] [stderr] 66 | |             break;
[INFO] [stderr] 67 | |         }
[INFO] [stderr]    | |_________- help: try this: `if hangman::check_if_continue().is_some()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_pattern_matching)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `"docker" "inspect" "406185159b8b96d5a0c166916597f53f157cc0e380bd2c1db56a26ddc5265933"`
[INFO] running `"docker" "rm" "-f" "406185159b8b96d5a0c166916597f53f157cc0e380bd2c1db56a26ddc5265933"`
[INFO] [stdout] 406185159b8b96d5a0c166916597f53f157cc0e380bd2c1db56a26ddc5265933