[INFO] crate hex-literal-impl 0.1.1 is already in cache
[INFO] extracting crate hex-literal-impl 0.1.1 into work/ex/clippy-test-run/sources/stable/reg/hex-literal-impl/0.1.1
[INFO] extracting crate hex-literal-impl 0.1.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/hex-literal-impl/0.1.1
[INFO] validating manifest of hex-literal-impl-0.1.1 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 hex-literal-impl-0.1.1 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 hex-literal-impl-0.1.1
[INFO] finished frobbing hex-literal-impl-0.1.1
[INFO] frobbed toml for hex-literal-impl-0.1.1 written to work/ex/clippy-test-run/sources/stable/reg/hex-literal-impl/0.1.1/Cargo.toml
[INFO] started frobbing hex-literal-impl-0.1.1
[INFO] finished frobbing hex-literal-impl-0.1.1
[INFO] frobbed toml for hex-literal-impl-0.1.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/hex-literal-impl/0.1.1/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 hex-literal-impl-0.1.1 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/hex-literal-impl/0.1.1:/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] a819faaa9d097e37508b9c935cbf89b00a4c81f21fe5faa24532e2046db6594a
[INFO] running `"docker" "start" "-a" "a819faaa9d097e37508b9c935cbf89b00a4c81f21fe5faa24532e2046db6594a"`
[INFO] [stderr]     Checking hex-literal-impl v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]  --> src/lib.rs:5:19
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn is_hex_char(c: &char) -> bool {
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:13:22
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn is_format_char(c: &char) -> bool {
[INFO] [stderr]    |                      ^^^^^ help: consider passing by value instead: `char`
[INFO] [stderr]    |
[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: this loop could be written as a `while let` loop
[INFO] [stderr]   --> src/lib.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 | /         loop {
[INFO] [stderr] 41 | |             let c1 = match iter.next() { Some(c) => c, None => break };
[INFO] [stderr] 42 | |             if let Some(c2) = iter.next() {
[INFO] [stderr] 43 | |                 s += "0x";
[INFO] [stderr] ...  |
[INFO] [stderr] 50 | |             }
[INFO] [stderr] 51 | |         }
[INFO] [stderr]    | |_________^ help: try: `while let Some(c) = iter.next() { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::while_let_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]  --> src/lib.rs:5:19
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn is_hex_char(c: &char) -> bool {
[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: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/lib.rs:13:22
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn is_format_char(c: &char) -> bool {
[INFO] [stderr]    |                      ^^^^^ help: consider passing by value instead: `char`
[INFO] [stderr]    |
[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: this loop could be written as a `while let` loop
[INFO] [stderr]   --> src/lib.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 | /         loop {
[INFO] [stderr] 41 | |             let c1 = match iter.next() { Some(c) => c, None => break };
[INFO] [stderr] 42 | |             if let Some(c2) = iter.next() {
[INFO] [stderr] 43 | |                 s += "0x";
[INFO] [stderr] ...  |
[INFO] [stderr] 50 | |             }
[INFO] [stderr] 51 | |         }
[INFO] [stderr]    | |_________^ help: try: `while let Some(c) = iter.next() { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::while_let_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `"docker" "inspect" "a819faaa9d097e37508b9c935cbf89b00a4c81f21fe5faa24532e2046db6594a"`
[INFO] running `"docker" "rm" "-f" "a819faaa9d097e37508b9c935cbf89b00a4c81f21fe5faa24532e2046db6594a"`
[INFO] [stdout] a819faaa9d097e37508b9c935cbf89b00a4c81f21fe5faa24532e2046db6594a