[INFO] updating cached repository syntheticsh/rust_regex_play
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/syntheticsh/rust_regex_play
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/syntheticsh/rust_regex_play" "work/ex/clippy-test-run/sources/stable/gh/syntheticsh/rust_regex_play"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/syntheticsh/rust_regex_play'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/syntheticsh/rust_regex_play" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/syntheticsh/rust_regex_play"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/syntheticsh/rust_regex_play'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f06f9d340b4bff6b329b1c75386f3dc94dc35bab
[INFO] sha for GitHub repo syntheticsh/rust_regex_play: f06f9d340b4bff6b329b1c75386f3dc94dc35bab
[INFO] validating manifest of syntheticsh/rust_regex_play 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 syntheticsh/rust_regex_play 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 syntheticsh/rust_regex_play
[INFO] finished frobbing syntheticsh/rust_regex_play
[INFO] frobbed toml for syntheticsh/rust_regex_play written to work/ex/clippy-test-run/sources/stable/gh/syntheticsh/rust_regex_play/Cargo.toml
[INFO] started frobbing syntheticsh/rust_regex_play
[INFO] finished frobbing syntheticsh/rust_regex_play
[INFO] frobbed toml for syntheticsh/rust_regex_play written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/syntheticsh/rust_regex_play/Cargo.toml
[INFO] crate syntheticsh/rust_regex_play 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 syntheticsh/rust_regex_play against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/syntheticsh/rust_regex_play:/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] e99516bd5b032ab885733fb69e5e18225dc0edbbaade4419274a5f9d8b7e1c96
[INFO] running `"docker" "start" "-a" "e99516bd5b032ab885733fb69e5e18225dc0edbbaade4419274a5f9d8b7e1c96"`
[INFO] [stderr]     Checking memchr v2.1.0
[INFO] [stderr]     Checking aho-corasick v0.6.8
[INFO] [stderr]     Checking regex v1.0.5
[INFO] [stderr]     Checking regexp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: called `map_or(None, f)` on an Option value. This can be done more directly by calling `and_then(f)` instead
[INFO] [stderr]   --> src/main.rs:30:34
[INFO] [stderr]    |
[INFO] [stderr] 30 |                 url.insert(word, cap.name(word).map_or(None, extractor));
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using and_then instead: `cap.name(word).and_then(extractor)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::option_map_or_none)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#option_map_or_none
[INFO] [stderr] 
[INFO] [stderr] warning: called `map_or(None, f)` on an Option value. This can be done more directly by calling `and_then(f)` instead
[INFO] [stderr]   --> src/main.rs:30:34
[INFO] [stderr]    |
[INFO] [stderr] 30 |                 url.insert(word, cap.name(word).map_or(None, extractor));
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using and_then instead: `cap.name(word).and_then(extractor)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::option_map_or_none)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#option_map_or_none
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.35s
[INFO] running `"docker" "inspect" "e99516bd5b032ab885733fb69e5e18225dc0edbbaade4419274a5f9d8b7e1c96"`
[INFO] running `"docker" "rm" "-f" "e99516bd5b032ab885733fb69e5e18225dc0edbbaade4419274a5f9d8b7e1c96"`
[INFO] [stdout] e99516bd5b032ab885733fb69e5e18225dc0edbbaade4419274a5f9d8b7e1c96