[INFO] updating cached repository scv119/rust101
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/scv119/rust101
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/scv119/rust101" "work/ex/clippy-test-run/sources/stable/gh/scv119/rust101"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/scv119/rust101'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/scv119/rust101" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/scv119/rust101"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/scv119/rust101'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d845231afb96fd964289fed7f7d6d259edb1e682
[INFO] sha for GitHub repo scv119/rust101: d845231afb96fd964289fed7f7d6d259edb1e682
[INFO] validating manifest of scv119/rust101 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 scv119/rust101 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 scv119/rust101
[INFO] finished frobbing scv119/rust101
[INFO] frobbed toml for scv119/rust101 written to work/ex/clippy-test-run/sources/stable/gh/scv119/rust101/Cargo.toml
[INFO] started frobbing scv119/rust101
[INFO] finished frobbing scv119/rust101
[INFO] frobbed toml for scv119/rust101 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/scv119/rust101/Cargo.toml
[INFO] crate scv119/rust101 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 scv119/rust101 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/scv119/rust101:/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] 999ac24fbadd2621025467ad768567b66941bb34485c3e8117ba1acc46117676
[INFO] running `"docker" "start" "-a" "999ac24fbadd2621025467ad768567b66941bb34485c3e8117ba1acc46117676"`
[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:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     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:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |         return a;
[INFO] [stderr]    |         ^^^^^^^^^ help: remove `return` as shown: `a`
[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/part00.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         return b;
[INFO] [stderr]    |         ^^^^^^^^^ help: remove `return` as shown: `b`
[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/part00.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     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:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |         return a;
[INFO] [stderr]    |         ^^^^^^^^^ help: remove `return` as shown: `a`
[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/part00.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |         return b;
[INFO] [stderr]    |         ^^^^^^^^^ help: remove `return` as shown: `b`
[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: manual implementation of an assign operation
[INFO] [stderr]   --> src/part01.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |         sum = sum + e;
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: replace it with: `sum += e`
[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: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
[INFO] [stderr]   --> src/part02.rs:23:18
[INFO] [stderr]    |
[INFO] [stderr] 23 |     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:24:15
[INFO] [stderr]    |
[INFO] [stderr] 24 | 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: length comparison to zero
[INFO] [stderr]   --> src/part05.rs:38:15
[INFO] [stderr]    |
[INFO] [stderr] 38 |         while v.len() > 0 && v[v.len() - 1] == 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/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 { unimplemented!() } else { None }
[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:47:14
[INFO] [stderr]    |
[INFO] [stderr] 47 |              b1 == b1,
[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:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |         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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/part10.rs:80:27
[INFO] [stderr]    |
[INFO] [stderr] 80 | 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:87:41
[INFO] [stderr]    |
[INFO] [stderr] 87 | 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:94:29
[INFO] [stderr]    |
[INFO] [stderr] 94 | 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:69:16
[INFO] [stderr]    |
[INFO] [stderr] 69 |     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:101:13
[INFO] [stderr]     |
[INFO] [stderr] 101 |             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: manual implementation of an assign operation
[INFO] [stderr]   --> src/part01.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |         sum = sum + e;
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: replace it with: `sum += e`
[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: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
[INFO] [stderr]   --> src/part02.rs:23:18
[INFO] [stderr]    |
[INFO] [stderr] 23 |     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:24:15
[INFO] [stderr]    |
[INFO] [stderr] 24 | 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: length comparison to zero
[INFO] [stderr]   --> src/part05.rs:38:15
[INFO] [stderr]    |
[INFO] [stderr] 38 |         while v.len() > 0 && v[v.len() - 1] == 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/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 { unimplemented!() } else { None }
[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:47:14
[INFO] [stderr]    |
[INFO] [stderr] 47 |              b1 == b1,
[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:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |         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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/part10.rs:80:27
[INFO] [stderr]    |
[INFO] [stderr] 80 | 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:87:41
[INFO] [stderr]    |
[INFO] [stderr] 87 | 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:94:29
[INFO] [stderr]    |
[INFO] [stderr] 94 | 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:69:16
[INFO] [stderr]    |
[INFO] [stderr] 69 |     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:101:13
[INFO] [stderr]     |
[INFO] [stderr] 101 |             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" "999ac24fbadd2621025467ad768567b66941bb34485c3e8117ba1acc46117676"`
[INFO] running `"docker" "rm" "-f" "999ac24fbadd2621025467ad768567b66941bb34485c3e8117ba1acc46117676"`
[INFO] [stdout] 999ac24fbadd2621025467ad768567b66941bb34485c3e8117ba1acc46117676