[INFO] updating cached repository cwchentw/non-redundant-digits-rust-demo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cwchentw/non-redundant-digits-rust-demo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cwchentw/non-redundant-digits-rust-demo" "work/ex/clippy-test-run/sources/stable/gh/cwchentw/non-redundant-digits-rust-demo"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/cwchentw/non-redundant-digits-rust-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cwchentw/non-redundant-digits-rust-demo" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/cwchentw/non-redundant-digits-rust-demo"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/cwchentw/non-redundant-digits-rust-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 54f025a95cb38afa1f79729b2c38772a282310df
[INFO] sha for GitHub repo cwchentw/non-redundant-digits-rust-demo: 54f025a95cb38afa1f79729b2c38772a282310df
[INFO] validating manifest of cwchentw/non-redundant-digits-rust-demo 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 cwchentw/non-redundant-digits-rust-demo 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 cwchentw/non-redundant-digits-rust-demo
[INFO] finished frobbing cwchentw/non-redundant-digits-rust-demo
[INFO] frobbed toml for cwchentw/non-redundant-digits-rust-demo written to work/ex/clippy-test-run/sources/stable/gh/cwchentw/non-redundant-digits-rust-demo/Cargo.toml
[INFO] started frobbing cwchentw/non-redundant-digits-rust-demo
[INFO] finished frobbing cwchentw/non-redundant-digits-rust-demo
[INFO] frobbed toml for cwchentw/non-redundant-digits-rust-demo written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/cwchentw/non-redundant-digits-rust-demo/Cargo.toml
[INFO] crate cwchentw/non-redundant-digits-rust-demo 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 cwchentw/non-redundant-digits-rust-demo against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/cwchentw/non-redundant-digits-rust-demo:/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] f5b7d4bd6dcfcdc2b8fdfe779423ffef4c922bd8a18e19388c48e0ac97466123
[INFO] running `"docker" "start" "-a" "f5b7d4bd6dcfcdc2b8fdfe779423ffef4c922bd8a18e19388c48e0ac97466123"`
[INFO] [stderr]    Compiling bzip2-sys v0.1.4
[INFO] [stderr]    Compiling xattr v0.1.10
[INFO] [stderr]    Compiling filetime v0.1.10
[INFO] [stderr]    Compiling tar v0.4.9
[INFO] [stderr]    Compiling bzip2 v0.3.0
[INFO] [stderr]    Compiling libpcre-sys v0.2.2
[INFO] [stderr] warning: redundant linker flag specified for library `pcre`
[INFO] [stderr] 
[INFO] [stderr]     Checking pcre v0.2.3
[INFO] [stderr]     Checking nine v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/main.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 |             println!("");
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/main.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/main.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 |             println!("");
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/main.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]   --> src/main.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 | /             writeln!(stderr(), "The pattern could not be compiled: {}", err)
[INFO] [stderr] 32 | |                 .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: redundant pattern matching, consider using `is_some()`
[INFO] [stderr]   --> src/main.rs:45:19
[INFO] [stderr]    |
[INFO] [stderr] 45 |           let dup = match matched {
[INFO] [stderr]    |  ___________________^
[INFO] [stderr] 46 | |             None => false,
[INFO] [stderr] 47 | |             Some(_) => true
[INFO] [stderr] 48 | |         };
[INFO] [stderr]    | |_________^ help: try this: `matched.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: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
[INFO] [stderr]   --> src/main.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 | /             writeln!(stderr(), "The pattern could not be compiled: {}", err)
[INFO] [stderr] 32 | |                 .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: redundant pattern matching, consider using `is_some()`
[INFO] [stderr]   --> src/main.rs:45:19
[INFO] [stderr]    |
[INFO] [stderr] 45 |           let dup = match matched {
[INFO] [stderr]    |  ___________________^
[INFO] [stderr] 46 | |             None => false,
[INFO] [stderr] 47 | |             Some(_) => true
[INFO] [stderr] 48 | |         };
[INFO] [stderr]    | |_________^ help: try this: `matched.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 8.67s
[INFO] running `"docker" "inspect" "f5b7d4bd6dcfcdc2b8fdfe779423ffef4c922bd8a18e19388c48e0ac97466123"`
[INFO] running `"docker" "rm" "-f" "f5b7d4bd6dcfcdc2b8fdfe779423ffef4c922bd8a18e19388c48e0ac97466123"`
[INFO] [stdout] f5b7d4bd6dcfcdc2b8fdfe779423ffef4c922bd8a18e19388c48e0ac97466123