error: item `PubOne` has a public `len` method but no corresponding `is_empty` method
  --> $DIR/len_zero.rs:18:1
   |
18 | / impl PubOne {
19 | |     pub fn len(self: &Self) -> isize {
20 | |         1
21 | |     }
22 | | }
   | |_^
   |
   = 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:67:1
   |
67 | / pub trait PubTraitsToo {
68 | |     fn len(self: &Self) -> isize;
69 | | }
   | |_^

error: item `HasIsEmpty` has a public `len` method but a private `is_empty` method
   --> $DIR/len_zero.rs:101:1
    |
101 | / impl HasIsEmpty {
102 | |     pub fn len(self: &Self) -> isize {
103 | |         1
104 | |     }
...   |
108 | |     }
109 | | }
    | |_^

error: item `HasWrongIsEmpty` has a public `len` method but no corresponding `is_empty` method
   --> $DIR/len_zero.rs:130:1
    |
130 | / impl HasWrongIsEmpty {
131 | |     pub fn len(self: &Self) -> isize {
132 | |         1
133 | |     }
...   |
137 | |     }
138 | | }
    | |_^

error: length comparison to zero
   --> $DIR/len_zero.rs:151:8
    |
151 |     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:155:8
    |
155 |     if "".len() == 0 {}
    |        ^^^^^^^^^^^^^ help: using `is_empty` is more concise: `"".is_empty()`

error: length comparison to zero
   --> $DIR/len_zero.rs:170:8
    |
170 |     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:173:8
    |
173 |     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:176:8
    |
176 |     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:179:8
    |
179 |     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:182:8
    |
182 |     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:193:8
    |
193 |     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:196:8
    |
196 |     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:199:8
    |
199 |     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:202:8
    |
202 |     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:205:8
    |
205 |     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:219:8
    |
219 |     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:232:8
    |
232 |     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:238:1
    |
238 | / pub trait DependsOnFoo: Foo {
239 | |     fn len(&mut self) -> usize;
240 | | }
    | |_^

error: aborting due to 19 previous errors