[INFO] updating cached repository gsfellis/rust-hangman
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gsfellis/rust-hangman
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gsfellis/rust-hangman" "work/ex/clippy-test-run/sources/stable/gh/gsfellis/rust-hangman"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/gsfellis/rust-hangman'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gsfellis/rust-hangman" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/gsfellis/rust-hangman"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/gsfellis/rust-hangman'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dd0ea30ca54130e7209d887eac2c7cc5d8861416
[INFO] sha for GitHub repo gsfellis/rust-hangman: dd0ea30ca54130e7209d887eac2c7cc5d8861416
[INFO] validating manifest of gsfellis/rust-hangman 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 gsfellis/rust-hangman 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 gsfellis/rust-hangman
[INFO] finished frobbing gsfellis/rust-hangman
[INFO] frobbed toml for gsfellis/rust-hangman written to work/ex/clippy-test-run/sources/stable/gh/gsfellis/rust-hangman/Cargo.toml
[INFO] started frobbing gsfellis/rust-hangman
[INFO] finished frobbing gsfellis/rust-hangman
[INFO] frobbed toml for gsfellis/rust-hangman written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/gsfellis/rust-hangman/Cargo.toml
[INFO] crate gsfellis/rust-hangman 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 gsfellis/rust-hangman against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/gsfellis/rust-hangman:/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] 9d8a5123e29219a4f172566870432d58c0a7bbc2806e9ec114d0ba6fca0551a4
[INFO] running `"docker" "start" "-a" "9d8a5123e29219a4f172566870432d58c0a7bbc2806e9ec114d0ba6fca0551a4"`
[INFO] [stderr]     Checking rust-hangman v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]   --> src/main.rs:79:16
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn update_word(word: &str, guess: &char) {
[INFO] [stderr]    |                ^^^^ help: consider using `_word` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `guess`
[INFO] [stderr]   --> src/main.rs:79:28
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn update_word(word: &str, guess: &char) {
[INFO] [stderr]    |                            ^^^^^ help: consider using `_guess` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut gallow = build_gallow();
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `update_word`
[INFO] [stderr]   --> src/main.rs:79:1
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn update_word(word: &str, guess: &char) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[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/main.rs:69:19
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn show_gallow(g: &Vec<String>) {
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: change this to: `&[String]`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:79:35
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn update_word(word: &str, guess: &char) {
[INFO] [stderr]    |                                   ^^^^^ help: consider passing by value instead: `char`
[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: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:145:13
[INFO] [stderr]     |
[INFO] [stderr] 145 |             guesses = guesses + 1;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `guesses += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]   --> src/main.rs:79:16
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn update_word(word: &str, guess: &char) {
[INFO] [stderr]    |                ^^^^ help: consider using `_word` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `guess`
[INFO] [stderr]   --> src/main.rs:79:28
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn update_word(word: &str, guess: &char) {
[INFO] [stderr]    |                            ^^^^^ help: consider using `_guess` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |     let mut gallow = build_gallow();
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `update_word`
[INFO] [stderr]   --> src/main.rs:79:1
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn update_word(word: &str, guess: &char) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[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/main.rs:69:19
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn show_gallow(g: &Vec<String>) {
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: change this to: `&[String]`
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:79:35
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn update_word(word: &str, guess: &char) {
[INFO] [stderr]    |                                   ^^^^^ help: consider passing by value instead: `char`
[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: manual implementation of an assign operation
[INFO] [stderr]    --> src/main.rs:145:13
[INFO] [stderr]     |
[INFO] [stderr] 145 |             guesses = guesses + 1;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `guesses += 1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "9d8a5123e29219a4f172566870432d58c0a7bbc2806e9ec114d0ba6fca0551a4"`
[INFO] running `"docker" "rm" "-f" "9d8a5123e29219a4f172566870432d58c0a7bbc2806e9ec114d0ba6fca0551a4"`
[INFO] [stdout] 9d8a5123e29219a4f172566870432d58c0a7bbc2806e9ec114d0ba6fca0551a4