error: item `PubOne` has a public `len` method but no corresponding `is_empty` method
  --> $DIR/len_zero.rs:8:1
   |
8  | / impl PubOne {
9  | |     pub fn len(self: &Self) -> isize {
10 | |         1
11 | |     }
12 | | }
   | |_^
   |
   = note: `-D clippy::len-without-is-empty` implied by `-D warnings`

error: trait `PubTraitsToo` has a `len` method but no (possibly inherited) `is_empty` method
  --> $DIR/len_zero.rs:57:1
   |
57 | / pub trait PubTraitsToo {
58 | |     fn len(self: &Self) -> isize;
59 | | }
   | |_^

error: item `HasIsEmpty` has a public `len` method but a private `is_empty` method
  --> $DIR/len_zero.rs:91:1
   |
91 | / impl HasIsEmpty {
92 | |     pub fn len(self: &Self) -> isize {
93 | |         1
94 | |     }
...  |
98 | |     }
99 | | }
   | |_^

error: item `HasWrongIsEmpty` has a public `len` method but no corresponding `is_empty` method
   --> $DIR/len_zero.rs:120:1
    |
120 | / impl HasWrongIsEmpty {
121 | |     pub fn len(self: &Self) -> isize {
122 | |         1
123 | |     }
...   |
127 | |     }
128 | | }
    | |_^

error: length comparison to zero
   --> $DIR/len_zero.rs:141:8
    |
141 |     if x.len() == 0 {
    |        ^^^^^^^^^^^^ help: using `is_empty` is more concise: `x.is_empty()`
    |
    = note: `-D clippy::len-zero` implied by `-D warnings`

error: length comparison to zero
   --> $DIR/len_zero.rs:145:8
    |
145 |     if "".len() == 0 {}
    |        ^^^^^^^^^^^^^ help: using `is_empty` is more concise: `"".is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:160:8
    |
160 |     if has_is_empty.len() == 0 {
    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is more concise: `has_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:163:8
    |
163 |     if has_is_empty.len() != 0 {
    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is more concise: `!has_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:166:8
    |
166 |     if has_is_empty.len() > 0 {
    |        ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is more concise: `!has_is_empty.is_empty()`

error: length comparison to one
   --> $DIR/len_zero.rs:169:8
    |
169 |     if has_is_empty.len() < 1 {
    |        ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is more concise: `has_is_empty.is_empty()`

error: length comparison to one
   --> $DIR/len_zero.rs:172:8
    |
172 |     if has_is_empty.len() >= 1 {
    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is more concise: `!has_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:183:8
    |
183 |     if 0 == has_is_empty.len() {
    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is more concise: `has_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:186:8
    |
186 |     if 0 != has_is_empty.len() {
    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is more concise: `!has_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:189:8
    |
189 |     if 0 < has_is_empty.len() {
    |        ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is more concise: `!has_is_empty.is_empty()`

error: length comparison to one
   --> $DIR/len_zero.rs:192:8
    |
192 |     if 1 <= has_is_empty.len() {
    |        ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is more concise: `!has_is_empty.is_empty()`

error: length comparison to one
   --> $DIR/len_zero.rs:195:8
    |
195 |     if 1 > has_is_empty.len() {
    |        ^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is more concise: `has_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:209:8
    |
209 |     if with_is_empty.len() == 0 {
    |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is more concise: `with_is_empty.is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:222:8
    |
222 |     if b.len() != 0 {}
    |        ^^^^^^^^^^^^ help: using `is_empty` is more concise: `!b.is_empty()`

error: trait `DependsOnFoo` has a `len` method but no (possibly inherited) `is_empty` method
   --> $DIR/len_zero.rs:228:1
    |
228 | / pub trait DependsOnFoo: Foo {
229 | |     fn len(&mut self) -> usize;
230 | | }
    | |_^

error: aborting due to 19 previous errors