[INFO] updating cached repository FGlazov/discrete_math [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/FGlazov/discrete_math [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/FGlazov/discrete_math" "work/ex/clippy-test-run/sources/stable/gh/FGlazov/discrete_math"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/FGlazov/discrete_math'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/FGlazov/discrete_math" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/FGlazov/discrete_math"` [INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/FGlazov/discrete_math'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] cefdc71b75b4bba3e167001fd33799a4a2e5a5f0 [INFO] sha for GitHub repo FGlazov/discrete_math: cefdc71b75b4bba3e167001fd33799a4a2e5a5f0 [INFO] validating manifest of FGlazov/discrete_math 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 FGlazov/discrete_math 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 FGlazov/discrete_math [INFO] finished frobbing FGlazov/discrete_math [INFO] frobbed toml for FGlazov/discrete_math written to work/ex/clippy-test-run/sources/stable/gh/FGlazov/discrete_math/Cargo.toml [INFO] started frobbing FGlazov/discrete_math [INFO] finished frobbing FGlazov/discrete_math [INFO] frobbed toml for FGlazov/discrete_math written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/FGlazov/discrete_math/Cargo.toml [INFO] crate FGlazov/discrete_math 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 FGlazov/discrete_math 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/FGlazov/discrete_math:/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] 809f1f91a4f44f26838df1810b9dcdef7dcd01ce7b6c9b18f8ea845dbc79dcfd [INFO] running `"docker" "start" "-a" "809f1f91a4f44f26838df1810b9dcdef7dcd01ce7b6c9b18f8ea845dbc79dcfd"` [INFO] [stderr] Checking discrete_math v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: long literal lacking separators [INFO] [stderr] --> src/main.rs:35:45 [INFO] [stderr] | [INFO] [stderr] 35 | thread::sleep(time::Duration::from_secs(100000)); [INFO] [stderr] | ^^^^^^ help: consider: `100_000` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unreadable_literal)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:60:9 [INFO] [stderr] | [INFO] [stderr] 60 | return result; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: remove `return` as shown: `result` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::needless_return)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:80:9 [INFO] [stderr] | [INFO] [stderr] 80 | return result; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: remove `return` as shown: `result` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:123:13 [INFO] [stderr] | [INFO] [stderr] 123 | return result; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: remove `return` as shown: `result` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:131:17 [INFO] [stderr] | [INFO] [stderr] 131 | return result; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: remove `return` as shown: `result` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:135:17 [INFO] [stderr] | [INFO] [stderr] 135 | return Vec::with_capacity(0); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Vec::with_capacity(0)` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:156:19 [INFO] [stderr] | [INFO] [stderr] 156 | None => { return Err(true); } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(true)` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:168:17 [INFO] [stderr] | [INFO] [stderr] 168 | return Err(false); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(false)` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:170:17 [INFO] [stderr] | [INFO] [stderr] 170 | return Ok(AllowedValues { x, y, allowed: allowed_values }); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(AllowedValues { x, y, allowed: allowed_values })` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] error: using `clone` on a double-reference; this will copy the reference instead of cloning the inner type [INFO] [stderr] --> src/main.rs:21:32 [INFO] [stderr] | [INFO] [stderr] 21 | let chunk_for_thread = chunk.clone().to_vec(); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[deny(clippy::clone_double_ref)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_double_ref [INFO] [stderr] help: try dereferencing it [INFO] [stderr] | [INFO] [stderr] 21 | let chunk_for_thread = &(*chunk).clone().to_vec(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] help: or try being explicit about what type to clone [INFO] [stderr] | [INFO] [stderr] 21 | let chunk_for_thread = &[LatinSquare]::clone(chunk).to_vec(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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:39:24 [INFO] [stderr] | [INFO] [stderr] 39 | fn check_chunk(chunk : &Vec) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: change this to: `&[LatinSquare]` [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: using `clone` on a `Copy` type [INFO] [stderr] --> src/main.rs:43:28 [INFO] [stderr] | [INFO] [stderr] 43 | let mut base = semi_reduced_square.entries.clone(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `semi_reduced_square.entries` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::clone_on_copy)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy [INFO] [stderr] [INFO] [stderr] warning: using `clone` on a `Copy` type [INFO] [stderr] --> src/main.rs:58:57 [INFO] [stderr] | [INFO] [stderr] 58 | let latin_semi_reduced = LatinSquare { entries: semi_reduced_square.clone() }; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*semi_reduced_square` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy [INFO] [stderr] [INFO] [stderr] warning: using `clone` on a `Copy` type [INFO] [stderr] --> src/main.rs:115:43 [INFO] [stderr] | [INFO] [stderr] 115 | let mut extended_square = current_square.clone(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `current_square` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy [INFO] [stderr] [INFO] [stderr] warning: manual implementation of an assign operation [INFO] [stderr] --> src/main.rs:163:17 [INFO] [stderr] | [INFO] [stderr] 163 | allowed_values = allowed_values & !current_square[x][i]; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `allowed_values &= !current_square[x][i]` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::assign_op_pattern)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern [INFO] [stderr] [INFO] [stderr] warning: manual implementation of an assign operation [INFO] [stderr] --> src/main.rs:164:17 [INFO] [stderr] | [INFO] [stderr] 164 | allowed_values = allowed_values & !current_square[i][y]; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `allowed_values &= !current_square[i][y]` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern [INFO] [stderr] [INFO] [stderr] warning: the loop variable `i` is used to index `current_square` [INFO] [stderr] --> src/main.rs:178:14 [INFO] [stderr] | [INFO] [stderr] 178 | for i in 1..ORDER { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::needless_range_loop)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop [INFO] [stderr] help: consider using an iterator [INFO] [stderr] | [INFO] [stderr] 178 | for (i, ) in current_square.iter().enumerate().take(ORDER).skip(1) { [INFO] [stderr] | ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] error: Could not compile `discrete_math`. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: long literal lacking separators [INFO] [stderr] --> src/main.rs:35:45 [INFO] [stderr] | [INFO] [stderr] 35 | thread::sleep(time::Duration::from_secs(100000)); [INFO] [stderr] | ^^^^^^ help: consider: `100_000` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::unreadable_literal)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:60:9 [INFO] [stderr] | [INFO] [stderr] 60 | return result; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: remove `return` as shown: `result` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::needless_return)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:80:9 [INFO] [stderr] | [INFO] [stderr] 80 | return result; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: remove `return` as shown: `result` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:123:13 [INFO] [stderr] | [INFO] [stderr] 123 | return result; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: remove `return` as shown: `result` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:131:17 [INFO] [stderr] | [INFO] [stderr] 131 | return result; [INFO] [stderr] | ^^^^^^^^^^^^^^ help: remove `return` as shown: `result` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:135:17 [INFO] [stderr] | [INFO] [stderr] 135 | return Vec::with_capacity(0); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Vec::with_capacity(0)` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:156:19 [INFO] [stderr] | [INFO] [stderr] 156 | None => { return Err(true); } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(true)` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:168:17 [INFO] [stderr] | [INFO] [stderr] 168 | return Err(false); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(false)` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] warning: unneeded return statement [INFO] [stderr] --> src/main.rs:170:17 [INFO] [stderr] | [INFO] [stderr] 170 | return Ok(AllowedValues { x, y, allowed: allowed_values }); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(AllowedValues { x, y, allowed: allowed_values })` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return [INFO] [stderr] [INFO] [stderr] error: using `clone` on a double-reference; this will copy the reference instead of cloning the inner type [INFO] [stderr] --> src/main.rs:21:32 [INFO] [stderr] | [INFO] [stderr] 21 | let chunk_for_thread = chunk.clone().to_vec(); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[deny(clippy::clone_double_ref)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_double_ref [INFO] [stderr] help: try dereferencing it [INFO] [stderr] | [INFO] [stderr] 21 | let chunk_for_thread = &(*chunk).clone().to_vec(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] help: or try being explicit about what type to clone [INFO] [stderr] | [INFO] [stderr] 21 | let chunk_for_thread = &[LatinSquare]::clone(chunk).to_vec(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [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:39:24 [INFO] [stderr] | [INFO] [stderr] 39 | fn check_chunk(chunk : &Vec) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ help: change this to: `&[LatinSquare]` [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: using `clone` on a `Copy` type [INFO] [stderr] --> src/main.rs:43:28 [INFO] [stderr] | [INFO] [stderr] 43 | let mut base = semi_reduced_square.entries.clone(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `semi_reduced_square.entries` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::clone_on_copy)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy [INFO] [stderr] [INFO] [stderr] warning: using `clone` on a `Copy` type [INFO] [stderr] --> src/main.rs:58:57 [INFO] [stderr] | [INFO] [stderr] 58 | let latin_semi_reduced = LatinSquare { entries: semi_reduced_square.clone() }; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*semi_reduced_square` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy [INFO] [stderr] [INFO] [stderr] warning: using `clone` on a `Copy` type [INFO] [stderr] --> src/main.rs:115:43 [INFO] [stderr] | [INFO] [stderr] 115 | let mut extended_square = current_square.clone(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: try removing the `clone` call: `current_square` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy [INFO] [stderr] [INFO] [stderr] warning: manual implementation of an assign operation [INFO] [stderr] --> src/main.rs:163:17 [INFO] [stderr] | [INFO] [stderr] 163 | allowed_values = allowed_values & !current_square[x][i]; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `allowed_values &= !current_square[x][i]` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::assign_op_pattern)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern [INFO] [stderr] [INFO] [stderr] warning: manual implementation of an assign operation [INFO] [stderr] --> src/main.rs:164:17 [INFO] [stderr] | [INFO] [stderr] 164 | allowed_values = allowed_values & !current_square[i][y]; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `allowed_values &= !current_square[i][y]` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern [INFO] [stderr] [INFO] [stderr] warning: the loop variable `i` is used to index `current_square` [INFO] [stderr] --> src/main.rs:178:14 [INFO] [stderr] | [INFO] [stderr] 178 | for i in 1..ORDER { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::needless_range_loop)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop [INFO] [stderr] help: consider using an iterator [INFO] [stderr] | [INFO] [stderr] 178 | for (i, ) in current_square.iter().enumerate().take(ORDER).skip(1) { [INFO] [stderr] | ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] error: Could not compile `discrete_math`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "809f1f91a4f44f26838df1810b9dcdef7dcd01ce7b6c9b18f8ea845dbc79dcfd"` [INFO] running `"docker" "rm" "-f" "809f1f91a4f44f26838df1810b9dcdef7dcd01ce7b6c9b18f8ea845dbc79dcfd"` [INFO] [stdout] 809f1f91a4f44f26838df1810b9dcdef7dcd01ce7b6c9b18f8ea845dbc79dcfd