[INFO] updating cached repository d4ncer/rust-learning
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/d4ncer/rust-learning
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/d4ncer/rust-learning" "work/ex/clippy-test-run/sources/stable/gh/d4ncer/rust-learning"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/d4ncer/rust-learning'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/d4ncer/rust-learning" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/d4ncer/rust-learning"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/d4ncer/rust-learning'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 26817aa6b88477ab1517ecf5f622d37de812fb62
[INFO] sha for GitHub repo d4ncer/rust-learning: 26817aa6b88477ab1517ecf5f622d37de812fb62
[INFO] validating manifest of d4ncer/rust-learning 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 d4ncer/rust-learning 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 d4ncer/rust-learning
[INFO] finished frobbing d4ncer/rust-learning
[INFO] frobbed toml for d4ncer/rust-learning written to work/ex/clippy-test-run/sources/stable/gh/d4ncer/rust-learning/Cargo.toml
[INFO] started frobbing d4ncer/rust-learning
[INFO] finished frobbing d4ncer/rust-learning
[INFO] frobbed toml for d4ncer/rust-learning written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/d4ncer/rust-learning/Cargo.toml
[INFO] crate d4ncer/rust-learning 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 d4ncer/rust-learning 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-5/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/d4ncer/rust-learning:/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] deecb1c7e6b55f57bb5338f142cad6c3b797676b697ec7846d8e2a4d8f6cc1a2
[INFO] running `"docker" "start" "-a" "deecb1c7e6b55f57bb5338f142cad6c3b797676b697ec7846d8e2a4d8f6cc1a2"`
[INFO] [stderr]     Checking rust-101-workspace v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/part10.rs:36:39
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let my_action = PrintWithString { prefix: prefix };
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^ help: replace it with: `prefix`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/part10.rs:36:39
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let my_action = PrintWithString { prefix: prefix };
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^ help: replace it with: `prefix`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/part00.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     return min;
[INFO] [stderr]    |     ^^^^^^^^^^^ help: remove `return` as shown: `min`
[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/part00.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     return vec;
[INFO] [stderr]    |     ^^^^^^^^^^^ help: remove `return` as shown: `vec`
[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 unit return type
[INFO] [stderr]   --> src/part03.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn print2(self) -> () {
[INFO] [stderr]    |                     ^^^^^ help: remove the `-> ()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]    --> src/part03.rs:104:21
[INFO] [stderr]     |
[INFO] [stderr] 104 |     fn print2(self) -> () {
[INFO] [stderr]     |                     ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]    --> src/part03.rs:110:21
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn print2(self) -> () {
[INFO] [stderr]     |                     ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/part00.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     return min;
[INFO] [stderr]    |     ^^^^^^^^^^^ help: remove `return` as shown: `min`
[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/part00.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     return vec;
[INFO] [stderr]    |     ^^^^^^^^^^^ help: remove `return` as shown: `vec`
[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 unit return type
[INFO] [stderr]   --> src/part03.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn print2(self) -> () {
[INFO] [stderr]    |                     ^^^^^ help: remove the `-> ()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]    --> src/part03.rs:104:21
[INFO] [stderr]     |
[INFO] [stderr] 104 |     fn print2(self) -> () {
[INFO] [stderr]     |                     ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit return type
[INFO] [stderr]    --> src/part03.rs:110:21
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn print2(self) -> () {
[INFO] [stderr]     |                     ^^^^^ help: remove the `-> ()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
[INFO] [stderr]   --> src/part02.rs:27:18
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn to_option(self) -> Option<T> {
[INFO] [stderr]    |                  ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[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/part04.rs:22:15
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn vec_min(v: &Vec<i32>) -> Option<i32> {
[INFO] [stderr]    |               ^^^^^^^^^ help: change this to: `&[i32]`
[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: length comparison to zero
[INFO] [stderr]   --> src/part05.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 |         if self.data.len() == 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.data.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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/part06.rs:26:15
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn vec_min(v: &Vec<BigInt>) -> Option<BigInt> {
[INFO] [stderr]    |               ^^^^^^^^^^^^ help: change this to: `&[BigInt]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[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/part06.rs:44:15
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn head<T>(v: &Vec<T>) -> Option<&T> {
[INFO] [stderr]    |               ^^^^^^^ help: change this to: `&[T]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/part06.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 |     if v.len() > 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!v.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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/part07.rs:11:31
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn vec_min<T: Minimum>(v: &Vec<T>) -> Option<&T> {
[INFO] [stderr]    |                               ^^^^^^^ help: change this to: `&[T]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] error: equal expressions as operands to `==`
[INFO] [stderr]   --> src/part07.rs:46:59
[INFO] [stderr]    |
[INFO] [stderr] 46 |     println!("b1 == b1: {} ; b1 == b2: {}; b1 != b2: {}", b1 == b1, b1 == b2, b1 != b2);
[INFO] [stderr]    |                                                           ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::eq_op)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eq_op
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `for` loop
[INFO] [stderr]   --> src/part09.rs:55:29
[INFO] [stderr]    |
[INFO] [stderr] 55 |     while let Some(digit) = iter.next() {
[INFO] [stderr]    |                             ^^^^^^^^^^^ help: try: `for digit in iter { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::while_let_on_iterator)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/part10.rs:70:55
[INFO] [stderr]    |
[INFO] [stderr] 70 |     b.act(|digit| { println!("{}: {}", count, digit); count = count +1; } );
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^ help: replace it with: `count += 1`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/part10.rs:77:27
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn inc_print_threshold(v: &Vec<i32>, offset: i32, threshold: i32) {
[INFO] [stderr]    |                           ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[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/part10.rs:84:41
[INFO] [stderr]    |
[INFO] [stderr] 84 | fn print_enumerated<T: fmt::Display>(v: &Vec<T>) {
[INFO] [stderr]    |                                         ^^^^^^^ help: change this to: `&[T]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[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/part10.rs:91:29
[INFO] [stderr]    |
[INFO] [stderr] 91 | fn filter_vec_by_divisor(v: &Vec<i32>, divisor: i32) -> Vec<i32> {
[INFO] [stderr]    |                             ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/part11.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |             count = count+1;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: replace it with: `count += 1`
[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: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/part12.rs:67:16
[INFO] [stderr]    |
[INFO] [stderr] 67 |     callbacks: Vec<Rc<RefCell<FnMut(i32)>>>,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/part12.rs:99:13
[INFO] [stderr]    |
[INFO] [stderr] 99 |             count = count+1;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: replace it with: `count += 1`
[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: manual implementation of an assign operation
[INFO] [stderr]   --> src/part15.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         *counter = *counter + by;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `*counter += by`
[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] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust-101-workspace`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
[INFO] [stderr]   --> src/part02.rs:27:18
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn to_option(self) -> Option<T> {
[INFO] [stderr]    |                  ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::wrong_self_convention)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention
[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/part04.rs:22:15
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn vec_min(v: &Vec<i32>) -> Option<i32> {
[INFO] [stderr]    |               ^^^^^^^^^ help: change this to: `&[i32]`
[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: length comparison to zero
[INFO] [stderr]   --> src/part05.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 |         if self.data.len() == 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.data.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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/part06.rs:26:15
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn vec_min(v: &Vec<BigInt>) -> Option<BigInt> {
[INFO] [stderr]    |               ^^^^^^^^^^^^ help: change this to: `&[BigInt]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[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/part06.rs:44:15
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn head<T>(v: &Vec<T>) -> Option<&T> {
[INFO] [stderr]    |               ^^^^^^^ help: change this to: `&[T]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/part06.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 |     if v.len() > 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!v.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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/part07.rs:11:31
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn vec_min<T: Minimum>(v: &Vec<T>) -> Option<&T> {
[INFO] [stderr]    |                               ^^^^^^^ help: change this to: `&[T]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] error: equal expressions as operands to `==`
[INFO] [stderr]   --> src/part07.rs:46:59
[INFO] [stderr]    |
[INFO] [stderr] 46 |     println!("b1 == b1: {} ; b1 == b2: {}; b1 != b2: {}", b1 == b1, b1 == b2, b1 != b2);
[INFO] [stderr]    |                                                           ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::eq_op)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#eq_op
[INFO] [stderr] 
[INFO] [stderr] warning: this loop could be written as a `for` loop
[INFO] [stderr]   --> src/part09.rs:55:29
[INFO] [stderr]    |
[INFO] [stderr] 55 |     while let Some(digit) = iter.next() {
[INFO] [stderr]    |                             ^^^^^^^^^^^ help: try: `for digit in iter { .. }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::while_let_on_iterator)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/part10.rs:70:55
[INFO] [stderr]    |
[INFO] [stderr] 70 |     b.act(|digit| { println!("{}: {}", count, digit); count = count +1; } );
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^ help: replace it with: `count += 1`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/part10.rs:77:27
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn inc_print_threshold(v: &Vec<i32>, offset: i32, threshold: i32) {
[INFO] [stderr]    |                           ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[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/part10.rs:84:41
[INFO] [stderr]    |
[INFO] [stderr] 84 | fn print_enumerated<T: fmt::Display>(v: &Vec<T>) {
[INFO] [stderr]    |                                         ^^^^^^^ help: change this to: `&[T]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[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/part10.rs:91:29
[INFO] [stderr]    |
[INFO] [stderr] 91 | fn filter_vec_by_divisor(v: &Vec<i32>, divisor: i32) -> Vec<i32> {
[INFO] [stderr]    |                             ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/part11.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |             count = count+1;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: replace it with: `count += 1`
[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: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/part12.rs:67:16
[INFO] [stderr]    |
[INFO] [stderr] 67 |     callbacks: Vec<Rc<RefCell<FnMut(i32)>>>,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/part12.rs:99:13
[INFO] [stderr]    |
[INFO] [stderr] 99 |             count = count+1;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: replace it with: `count += 1`
[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: manual implementation of an assign operation
[INFO] [stderr]   --> src/part15.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         *counter = *counter + by;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `*counter += by`
[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] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rust-101-workspace`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "deecb1c7e6b55f57bb5338f142cad6c3b797676b697ec7846d8e2a4d8f6cc1a2"`
[INFO] running `"docker" "rm" "-f" "deecb1c7e6b55f57bb5338f142cad6c3b797676b697ec7846d8e2a4d8f6cc1a2"`
[INFO] [stdout] deecb1c7e6b55f57bb5338f142cad6c3b797676b697ec7846d8e2a4d8f6cc1a2