[INFO] updating cached repository notexactlyawe/rust-hangman
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/notexactlyawe/rust-hangman
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/notexactlyawe/rust-hangman" "work/ex/clippy-test-run/sources/stable/gh/notexactlyawe/rust-hangman"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/notexactlyawe/rust-hangman'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/notexactlyawe/rust-hangman" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/notexactlyawe/rust-hangman"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/notexactlyawe/rust-hangman'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9c48c49412dd7bdafb009e5524f2db2e3eda0137
[INFO] sha for GitHub repo notexactlyawe/rust-hangman: 9c48c49412dd7bdafb009e5524f2db2e3eda0137
[INFO] validating manifest of notexactlyawe/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 notexactlyawe/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 notexactlyawe/rust-hangman
[INFO] finished frobbing notexactlyawe/rust-hangman
[INFO] frobbed toml for notexactlyawe/rust-hangman written to work/ex/clippy-test-run/sources/stable/gh/notexactlyawe/rust-hangman/Cargo.toml
[INFO] started frobbing notexactlyawe/rust-hangman
[INFO] finished frobbing notexactlyawe/rust-hangman
[INFO] frobbed toml for notexactlyawe/rust-hangman written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/notexactlyawe/rust-hangman/Cargo.toml
[INFO] crate notexactlyawe/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 notexactlyawe/rust-hangman against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/notexactlyawe/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] 306ce333c2a14946f3e401088682d5b4a9fea04c70987f2f460ffe19d1506cc1
[INFO] running `"docker" "start" "-a" "306ce333c2a14946f3e401088682d5b4a9fea04c70987f2f460ffe19d1506cc1"`
[INFO] [stderr]     Checking hangman v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     f.read_to_string(&mut f_buf);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[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:44:24
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn chars_in_string(vc: &Vec<char>, s: &str, guessed_flag: &mut bool) -> String {
[INFO] [stderr]    |                        ^^^^^^^^^^ help: change this to: `&[char]`
[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: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     f.read_to_string(&mut f_buf);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[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:44:24
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn chars_in_string(vc: &Vec<char>, s: &str, guessed_flag: &mut bool) -> String {
[INFO] [stderr]    |                        ^^^^^^^^^^ help: change this to: `&[char]`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "306ce333c2a14946f3e401088682d5b4a9fea04c70987f2f460ffe19d1506cc1"`
[INFO] running `"docker" "rm" "-f" "306ce333c2a14946f3e401088682d5b4a9fea04c70987f2f460ffe19d1506cc1"`
[INFO] [stdout] 306ce333c2a14946f3e401088682d5b4a9fea04c70987f2f460ffe19d1506cc1