rust/tests/ui/methods.stderr
2018-10-06 09:43:08 -07:00

458 lines
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Plaintext

error: defining a method called `add` on this type; consider implementing the `std::ops::Add` trait or choosing a less ambiguous name
--> $DIR/methods.rs:31:5
|
31 | pub fn add(self, other: T) -> T { self }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `-D clippy::should-implement-trait` implied by `-D warnings`
error: methods called `into_*` usually take self by value; consider choosing a less ambiguous name
--> $DIR/methods.rs:42:17
|
42 | fn into_u16(&self) -> u16 { 0 }
| ^^^^^
|
= note: `-D clippy::wrong-self-convention` implied by `-D warnings`
error: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
--> $DIR/methods.rs:44:21
|
44 | fn to_something(self) -> u32 { 0 }
| ^^^^
error: methods called `new` usually take no self; consider choosing a less ambiguous name
--> $DIR/methods.rs:46:12
|
46 | fn new(self) {}
| ^^^^
error: methods called `new` usually return `Self`
--> $DIR/methods.rs:46:5
|
46 | fn new(self) {}
| ^^^^^^^^^^^^^^^
|
= note: `-D clippy::new-ret-no-self` implied by `-D warnings`
error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
--> $DIR/methods.rs:114:13
|
114 | let _ = opt.map(|x| x + 1)
| _____________^
115 | |
116 | | .unwrap_or(0); // should lint even though this call is on a separate line
| |____________________________^
|
= note: `-D clippy::option-map-unwrap-or` implied by `-D warnings`
= note: replace `map(|x| x + 1).unwrap_or(0)` with `map_or(0, |x| x + 1)`
error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
--> $DIR/methods.rs:118:13
|
118 | let _ = opt.map(|x| {
| _____________^
119 | | x + 1
120 | | }
121 | | ).unwrap_or(0);
| |____________________________^
error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
--> $DIR/methods.rs:122:13
|
122 | let _ = opt.map(|x| x + 1)
| _____________^
123 | | .unwrap_or({
124 | | 0
125 | | });
| |__________________^
error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
--> $DIR/methods.rs:127:13
|
127 | let _ = opt.map(|x| Some(x + 1)).unwrap_or(None);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: replace `map(|x| Some(x + 1)).unwrap_or(None)` with `and_then(|x| Some(x + 1))`
error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
--> $DIR/methods.rs:129:13
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129 | let _ = opt.map(|x| {
| _____________^
130 | | Some(x + 1)
131 | | }
132 | | ).unwrap_or(None);
| |_____________________^
error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
--> $DIR/methods.rs:133:13
|
133 | let _ = opt
| _____________^
134 | | .map(|x| Some(x + 1))
135 | | .unwrap_or(None);
| |________________________^
|
= note: replace `map(|x| Some(x + 1)).unwrap_or(None)` with `and_then(|x| Some(x + 1))`
error: called `map(f).unwrap_or_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
--> $DIR/methods.rs:141:13
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141 | let _ = opt.map(|x| x + 1)
| _____________^
142 | |
143 | | .unwrap_or_else(|| 0); // should lint even though this call is on a separate line
| |____________________________________^
|
= note: `-D clippy::option-map-unwrap-or-else` implied by `-D warnings`
= note: replace `map(|x| x + 1).unwrap_or_else(|| 0)` with `map_or_else(|| 0, |x| x + 1)`
error: called `map(f).unwrap_or_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
--> $DIR/methods.rs:145:13
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145 | let _ = opt.map(|x| {
| _____________^
146 | | x + 1
147 | | }
148 | | ).unwrap_or_else(|| 0);
| |____________________________________^
error: called `map(f).unwrap_or_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
--> $DIR/methods.rs:149:13
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149 | let _ = opt.map(|x| x + 1)
| _____________^
150 | | .unwrap_or_else(||
151 | | 0
152 | | );
| |_________________^
error: called `map_or(None, f)` on an Option value. This can be done more directly by calling `and_then(f)` instead
--> $DIR/methods.rs:158:13
|
158 | let _ = opt.map_or(None, |x| Some(x + 1));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using and_then instead: `opt.and_then(|x| Some(x + 1))`
|
= note: `-D clippy::option-map-or-none` implied by `-D warnings`
error: called `map_or(None, f)` on an Option value. This can be done more directly by calling `and_then(f)` instead
--> $DIR/methods.rs:160:13
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160 | let _ = opt.map_or(None, |x| {
| _____________^
161 | | Some(x + 1)
162 | | }
163 | | );
| |_________________^
help: try using and_then instead
|
160 | let _ = opt.and_then(|x| {
161 | Some(x + 1)
162 | });
|
error: called `map(f).unwrap_or_else(g)` on a Result value. This can be done more directly by calling `ok().map_or_else(g, f)` instead
--> $DIR/methods.rs:173:13
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173 | let _ = res.map(|x| x + 1)
| _____________^
174 | |
175 | | .unwrap_or_else(|e| 0); // should lint even though this call is on a separate line
| |_____________________________________^
|
= note: `-D clippy::result-map-unwrap-or-else` implied by `-D warnings`
= note: replace `map(|x| x + 1).unwrap_or_else(|e| 0)` with `ok().map_or_else(|e| 0, |x| x + 1)`
error: called `map(f).unwrap_or_else(g)` on a Result value. This can be done more directly by calling `ok().map_or_else(g, f)` instead
--> $DIR/methods.rs:177:13
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177 | let _ = res.map(|x| {
| _____________^
178 | | x + 1
179 | | }
180 | | ).unwrap_or_else(|e| 0);
| |_____________________________________^
error: called `map(f).unwrap_or_else(g)` on a Result value. This can be done more directly by calling `ok().map_or_else(g, f)` instead
--> $DIR/methods.rs:181:13
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181 | let _ = res.map(|x| x + 1)
| _____________^
182 | | .unwrap_or_else(|e|
183 | | 0
184 | | );
| |_________________^
error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
--> $DIR/methods.rs:244:13
|
244 | let _ = v.iter().filter(|&x| *x < 0).next();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `-D clippy::filter-next` implied by `-D warnings`
= note: replace `filter(|&x| *x < 0).next()` with `find(|&x| *x < 0)`
error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
--> $DIR/methods.rs:247:13
|
247 | let _ = v.iter().filter(|&x| {
| _____________^
248 | | *x < 0
249 | | }
250 | | ).next();
| |___________________________^
error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
--> $DIR/methods.rs:262:13
|
262 | let _ = v.iter().find(|&x| *x < 0).is_some();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `-D clippy::search-is-some` implied by `-D warnings`
= note: replace `find(|&x| *x < 0).is_some()` with `any(|&x| *x < 0)`
error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
--> $DIR/methods.rs:265:13
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265 | let _ = v.iter().find(|&x| {
| _____________^
266 | | *x < 0
267 | | }
268 | | ).is_some();
| |______________________________^
error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`.
--> $DIR/methods.rs:271:13
|
271 | let _ = v.iter().position(|&x| x < 0).is_some();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: replace `position(|&x| x < 0).is_some()` with `any(|&x| x < 0)`
error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`.
--> $DIR/methods.rs:274:13
|
274 | let _ = v.iter().position(|&x| {
| _____________^
275 | | x < 0
276 | | }
277 | | ).is_some();
| |______________________________^
error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`.
--> $DIR/methods.rs:280:13
|
280 | let _ = v.iter().rposition(|&x| x < 0).is_some();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: replace `rposition(|&x| x < 0).is_some()` with `any(|&x| x < 0)`
error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`.
--> $DIR/methods.rs:283:13
|
283 | let _ = v.iter().rposition(|&x| {
| _____________^
284 | | x < 0
285 | | }
286 | | ).is_some();
| |______________________________^
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:318:22
|
318 | with_constructor.unwrap_or(make());
| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(make)`
|
= note: `-D clippy::or-fun-call` implied by `-D warnings`
error: use of `unwrap_or` followed by a call to `new`
--> $DIR/methods.rs:321:5
|
321 | with_new.unwrap_or(Vec::new());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_new.unwrap_or_default()`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:324:21
|
324 | with_const_args.unwrap_or(Vec::with_capacity(12));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| Vec::with_capacity(12))`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:327:14
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327 | with_err.unwrap_or(make());
| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| make())`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:330:19
|
330 | with_err_args.unwrap_or(Vec::with_capacity(12));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| Vec::with_capacity(12))`
error: use of `unwrap_or` followed by a call to `default`
--> $DIR/methods.rs:333:5
|
333 | with_default_trait.unwrap_or(Default::default());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_default_trait.unwrap_or_default()`
error: use of `unwrap_or` followed by a call to `default`
--> $DIR/methods.rs:336:5
|
336 | with_default_type.unwrap_or(u64::default());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_default_type.unwrap_or_default()`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:339:14
|
339 | with_vec.unwrap_or(vec![]);
| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| < [ _ ] > :: into_vec ( box [ $ ( $ x ) , * ] ))`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:344:21
|
344 | without_default.unwrap_or(Foo::new());
| ^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(Foo::new)`
error: use of `or_insert` followed by a function call
--> $DIR/methods.rs:347:19
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347 | map.entry(42).or_insert(String::new());
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(String::new)`
error: use of `or_insert` followed by a function call
--> $DIR/methods.rs:350:21
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350 | btree.entry(42).or_insert(String::new());
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(String::new)`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:353:21
|
353 | let _ = stringy.unwrap_or("".to_owned());
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "".to_owned())`
error: `error_code` is shadowed by `123_i32`
--> $DIR/methods.rs:387:9
|
387 | let error_code = 123_i32;
| ^^^^^^^^^^
|
= note: `-D clippy::shadow-unrelated` implied by `-D warnings`
note: initialization happens here
--> $DIR/methods.rs:387:22
|
387 | let error_code = 123_i32;
| ^^^^^^^
note: previous binding is here
--> $DIR/methods.rs:374:9
|
374 | let error_code = 123_i32;
| ^^^^^^^^^^
error: use of `expect` followed by a function call
--> $DIR/methods.rs:376:26
|
376 | with_none_and_format.expect(&format!("Error {}: fake error", error_code));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!("Error {}: fake error", error_code))`
|
= note: `-D clippy::expect-fun-call` implied by `-D warnings`
error: use of `expect` followed by a function call
--> $DIR/methods.rs:379:26
|
379 | with_none_and_as_str.expect(format!("Error {}: fake error", error_code).as_str());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| panic!(format!("Error {}: fake error", error_code).as_str()))`
error: use of `expect` followed by a function call
--> $DIR/methods.rs:389:25
|
389 | with_err_and_format.expect(&format!("Error {}: fake error", error_code));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!("Error {}: fake error", error_code))`
error: use of `expect` followed by a function call
--> $DIR/methods.rs:392:25
|
392 | with_err_and_as_str.expect(format!("Error {}: fake error", error_code).as_str());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| panic!(format!("Error {}: fake error", error_code).as_str()))`
error: called `.iter().nth()` on a Vec. Calling `.get()` is both faster and more readable
--> $DIR/methods.rs:416:23
|
416 | let bad_vec = some_vec.iter().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^
|
= note: `-D clippy::iter-nth` implied by `-D warnings`
error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
--> $DIR/methods.rs:417:26
|
417 | let bad_slice = &some_vec[..].iter().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
--> $DIR/methods.rs:418:31
|
418 | let bad_boxed_slice = boxed_slice.iter().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter().nth()` on a VecDeque. Calling `.get()` is both faster and more readable
--> $DIR/methods.rs:419:29
|
419 | let bad_vec_deque = some_vec_deque.iter().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter_mut().nth()` on a Vec. Calling `.get_mut()` is both faster and more readable
--> $DIR/methods.rs:424:23
|
424 | let bad_vec = some_vec.iter_mut().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter_mut().nth()` on a slice. Calling `.get_mut()` is both faster and more readable
--> $DIR/methods.rs:427:26
|
427 | let bad_slice = &some_vec[..].iter_mut().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter_mut().nth()` on a VecDeque. Calling `.get_mut()` is both faster and more readable
--> $DIR/methods.rs:430:29
|
430 | let bad_vec_deque = some_vec_deque.iter_mut().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
--> $DIR/methods.rs:442:13
|
442 | let _ = some_vec.iter().skip(42).next();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `-D clippy::iter-skip-next` implied by `-D warnings`
error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
--> $DIR/methods.rs:443:13
|
443 | let _ = some_vec.iter().cycle().skip(42).next();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
--> $DIR/methods.rs:444:13
|
444 | let _ = (1..10).skip(10).next();
| ^^^^^^^^^^^^^^^^^^^^^^^
error: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
--> $DIR/methods.rs:445:14
|
445 | let _ = &some_vec[..].iter().skip(3).next();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: used unwrap() on an Option value. If you don't want to handle the None case gracefully, consider using expect() to provide a better panic message
--> $DIR/methods.rs:454:13
|
454 | let _ = opt.unwrap();
| ^^^^^^^^^^^^
|
= note: `-D clippy::option-unwrap-used` implied by `-D warnings`
error: aborting due to 56 previous errors