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:21:5 | 21 | pub fn add(self, other: T) -> T { self } | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `-D 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:32:17 | 32 | fn into_u16(&self) -> u16 { 0 } | ^^^^^ | = note: `-D 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:34:21 | 34 | fn to_something(self) -> u32 { 0 } | ^^^^ error: methods called `new` usually take no self; consider choosing a less ambiguous name --> $DIR/methods.rs:36:12 | 36 | fn new(self) {} | ^^^^ error: methods called `new` usually return `Self` --> $DIR/methods.rs:36:5 | 36 | fn new(self) {} | ^^^^^^^^^^^^^^^ | = note: `-D 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:104:13 | 104 | let _ = opt.map(|x| x + 1) | _____________^ 105 | | 106 | | .unwrap_or(0); // should lint even though this call is on a separate line | |____________________________^ | = note: `-D 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:108:13 | 108 | let _ = opt.map(|x| { | _____________^ 109 | | x + 1 110 | | } 111 | | ).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:112:13 | 112 | let _ = opt.map(|x| x + 1) | _____________^ 113 | | .unwrap_or({ 114 | | 0 115 | | }); | |__________________^ 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:117:13 | 117 | 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:119:13 | 119 | let _ = opt.map(|x| { | _____________^ 120 | | Some(x + 1) 121 | | } 122 | | ).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:123:13 | 123 | let _ = opt | _____________^ 124 | | .map(|x| Some(x + 1)) 125 | | .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:131:13 | 131 | let _ = opt.map(|x| x + 1) | _____________^ 132 | | 133 | | .unwrap_or_else(|| 0); // should lint even though this call is on a separate line | |____________________________________^ | = note: `-D 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:135:13 | 135 | let _ = opt.map(|x| { | _____________^ 136 | | x + 1 137 | | } 138 | | ).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:139:13 | 139 | let _ = opt.map(|x| x + 1) | _____________^ 140 | | .unwrap_or_else(|| 141 | | 0 142 | | ); | |_________________^ 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:148:13 | 148 | let _ = opt.map_or(None, |x| Some(x + 1)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using and_then instead: `opt.and_then(|x| Some(x + 1))` | = note: `-D 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:150:13 | 150 | let _ = opt.map_or(None, |x| { | _____________^ 151 | | Some(x + 1) 152 | | } 153 | | ); | |_________________^ help: try using and_then instead | 150 | let _ = opt.and_then(|x| { 151 | Some(x + 1) 152 | }); | 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:163:13 | 163 | let _ = res.map(|x| x + 1) | _____________^ 164 | | 165 | | .unwrap_or_else(|e| 0); // should lint even though this call is on a separate line | |_____________________________________^ | = note: `-D 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:167:13 | 167 | let _ = res.map(|x| { | _____________^ 168 | | x + 1 169 | | } 170 | | ).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:171:13 | 171 | let _ = res.map(|x| x + 1) | _____________^ 172 | | .unwrap_or_else(|e| 173 | | 0 174 | | ); | |_________________^ error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead. --> $DIR/methods.rs:234:13 | 234 | let _ = v.iter().filter(|&x| *x < 0).next(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `-D 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:237:13 | 237 | let _ = v.iter().filter(|&x| { | _____________^ 238 | | *x < 0 239 | | } 240 | | ).next(); | |___________________________^ error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`. --> $DIR/methods.rs:252:13 | 252 | let _ = v.iter().find(|&x| *x < 0).is_some(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `-D 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:255:13 | 255 | let _ = v.iter().find(|&x| { | _____________^ 256 | | *x < 0 257 | | } 258 | | ).is_some(); | |______________________________^ error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`. --> $DIR/methods.rs:261:13 | 261 | 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:264:13 | 264 | let _ = v.iter().position(|&x| { | _____________^ 265 | | x < 0 266 | | } 267 | | ).is_some(); | |______________________________^ error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`. --> $DIR/methods.rs:270:13 | 270 | 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:273:13 | 273 | let _ = v.iter().rposition(|&x| { | _____________^ 274 | | x < 0 275 | | } 276 | | ).is_some(); | |______________________________^ error: use of `unwrap_or` followed by a function call --> $DIR/methods.rs:308:22 | 308 | with_constructor.unwrap_or(make()); | ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(make)` | = note: `-D or-fun-call` implied by `-D warnings` error: use of `unwrap_or` followed by a call to `new` --> $DIR/methods.rs:311:5 | 311 | 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:314:21 | 314 | 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:317:14 | 317 | 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:320:19 | 320 | 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:323:5 | 323 | 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:326:5 | 326 | 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:329:14 | 329 | 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:334:21 | 334 | 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:337:19 | 337 | 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:340:21 | 340 | 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:343:21 | 343 | 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:377:9 | 377 | let error_code = 123_i32; | ^^^^^^^^^^ | = note: `-D shadow-unrelated` implied by `-D warnings` note: initialization happens here --> $DIR/methods.rs:377:22 | 377 | let error_code = 123_i32; | ^^^^^^^ note: previous binding is here --> $DIR/methods.rs:364:9 | 364 | let error_code = 123_i32; | ^^^^^^^^^^ error: use of `expect` followed by a function call --> $DIR/methods.rs:366:26 | 366 | 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 expect-fun-call` implied by `-D warnings` error: use of `expect` followed by a function call --> $DIR/methods.rs:369:26 | 369 | 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:379:25 | 379 | 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:382:25 | 382 | 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:406:23 | 406 | let bad_vec = some_vec.iter().nth(3); | ^^^^^^^^^^^^^^^^^^^^^^ | = note: `-D iter-nth` implied by `-D warnings` error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable --> $DIR/methods.rs:407:26 | 407 | 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:408:31 | 408 | 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:409:29 | 409 | 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:414:23 | 414 | 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:417:26 | 417 | 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:420:29 | 420 | 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:432:13 | 432 | let _ = some_vec.iter().skip(42).next(); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: `-D 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:433:13 | 433 | 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:434:13 | 434 | 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:435:14 | 435 | 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:444:13 | 444 | let _ = opt.unwrap(); | ^^^^^^^^^^^^ | = note: `-D option-unwrap-used` implied by `-D warnings` error: aborting due to 56 previous errors