[INFO] updating cached repository dewaka/chainmap [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/dewaka/chainmap [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/dewaka/chainmap" "work/ex/clippy-test-run/sources/stable/gh/dewaka/chainmap"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/dewaka/chainmap'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/dewaka/chainmap" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/dewaka/chainmap"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/dewaka/chainmap'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 9387f660b4bf73ef1ee5bb806f0b9c1effaa7306 [INFO] sha for GitHub repo dewaka/chainmap: 9387f660b4bf73ef1ee5bb806f0b9c1effaa7306 [INFO] validating manifest of dewaka/chainmap 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 dewaka/chainmap 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 dewaka/chainmap [INFO] finished frobbing dewaka/chainmap [INFO] frobbed toml for dewaka/chainmap written to work/ex/clippy-test-run/sources/stable/gh/dewaka/chainmap/Cargo.toml [INFO] started frobbing dewaka/chainmap [INFO] finished frobbing dewaka/chainmap [INFO] frobbed toml for dewaka/chainmap written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/dewaka/chainmap/Cargo.toml [INFO] crate dewaka/chainmap 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 dewaka/chainmap against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/dewaka/chainmap:/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 -Dclippy::into_iter_on_array" "-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] 9a897ef376bb5d98e49b6760c868194655e444481fbffda4133e141e903b0092 [INFO] running `"docker" "start" "-a" "9a897ef376bb5d98e49b6760c868194655e444481fbffda4133e141e903b0092"` [INFO] [stderr] Checking chainmap v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:28:12 [INFO] [stderr] | [INFO] [stderr] 28 | if self.maps.len() == 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.maps.is_empty()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::len_zero)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:79:12 [INFO] [stderr] | [INFO] [stderr] 79 | if self.maps.len() > 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.maps.is_empty()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:90:12 [INFO] [stderr] | [INFO] [stderr] 90 | if self.maps.len() > 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.maps.is_empty()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:28:12 [INFO] [stderr] | [INFO] [stderr] 28 | if self.maps.len() == 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.maps.is_empty()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::len_zero)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:79:12 [INFO] [stderr] | [INFO] [stderr] 79 | if self.maps.len() > 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.maps.is_empty()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:90:12 [INFO] [stderr] | [INFO] [stderr] 90 | if self.maps.len() > 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.maps.is_empty()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/example.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let mut clothing = HashMap::new(); [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: method is never used: `insert` [INFO] [stderr] --> src/lib.rs:27:5 [INFO] [stderr] | [INFO] [stderr] 27 | pub fn insert(&mut self, k: K, v: V) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `is_empty` [INFO] [stderr] --> src/lib.rs:36:5 [INFO] [stderr] | [INFO] [stderr] 36 | pub fn is_empty(&self) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `empty` [INFO] [stderr] --> src/lib.rs:51:5 [INFO] [stderr] | [INFO] [stderr] 51 | pub fn empty() -> Self { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `add_map` [INFO] [stderr] --> src/lib.rs:56:5 [INFO] [stderr] | [INFO] [stderr] 56 | pub fn add_map(&mut self, m: ChainMapType) -> &mut Self { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `to_map` [INFO] [stderr] --> src/lib.rs:64:5 [INFO] [stderr] | [INFO] [stderr] 64 | pub fn to_map(&self) -> ChainMapType { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `parents` [INFO] [stderr] --> src/lib.rs:78:5 [INFO] [stderr] | [INFO] [stderr] 78 | pub fn parents(&self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `children` [INFO] [stderr] --> src/lib.rs:89:5 [INFO] [stderr] | [INFO] [stderr] 89 | pub fn children(&self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:28:12 [INFO] [stderr] | [INFO] [stderr] 28 | if self.maps.len() == 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.maps.is_empty()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::len_zero)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:79:12 [INFO] [stderr] | [INFO] [stderr] 79 | if self.maps.len() > 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.maps.is_empty()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:90:12 [INFO] [stderr] | [INFO] [stderr] 90 | if self.maps.len() > 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.maps.is_empty()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/example.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | let mut clothing = HashMap::new(); [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: length comparison to zero [INFO] [stderr] --> src/lib.rs:28:12 [INFO] [stderr] | [INFO] [stderr] 28 | if self.maps.len() == 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.maps.is_empty()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::len_zero)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:79:12 [INFO] [stderr] | [INFO] [stderr] 79 | if self.maps.len() > 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.maps.is_empty()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] warning: length comparison to zero [INFO] [stderr] --> src/lib.rs:90:12 [INFO] [stderr] | [INFO] [stderr] 90 | if self.maps.len() > 0 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!self.maps.is_empty()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.75s [INFO] running `"docker" "inspect" "9a897ef376bb5d98e49b6760c868194655e444481fbffda4133e141e903b0092"` [INFO] running `"docker" "rm" "-f" "9a897ef376bb5d98e49b6760c868194655e444481fbffda4133e141e903b0092"` [INFO] [stdout] 9a897ef376bb5d98e49b6760c868194655e444481fbffda4133e141e903b0092