File: non-defaulted-item-fail.stderr

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid, trixie
  • size: 893,396 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (79 lines) | stat: -rw-r--r-- 3,097 bytes parent folder | download | duplicates (9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
  --> $DIR/non-defaulted-item-fail.rs:1:12
   |
LL | #![feature(specialization, associated_type_defaults)]
   |            ^^^^^^^^^^^^^^
   |
   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
   = help: consider using `min_specialization` instead, which is more stable and complete
   = note: `#[warn(incomplete_features)]` on by default

error[E0520]: `Ty` specializes an item from a parent `impl`, but that item is not marked `default`
  --> $DIR/non-defaulted-item-fail.rs:30:5
   |
LL | impl<T> Foo for Box<T> {
   | ---------------------- parent `impl` is here
...
LL |     type Ty = Vec<()>;
   |     ^^^^^^^ cannot specialize default item `Ty`
   |
   = note: to specialize, `Ty` in the parent `impl` must be marked `default`

error[E0520]: `CONST` specializes an item from a parent `impl`, but that item is not marked `default`
  --> $DIR/non-defaulted-item-fail.rs:32:5
   |
LL | impl<T> Foo for Box<T> {
   | ---------------------- parent `impl` is here
...
LL |     const CONST: u8 = 42;
   |     ^^^^^^^^^^^^^^^ cannot specialize default item `CONST`
   |
   = note: to specialize, `CONST` in the parent `impl` must be marked `default`

error[E0520]: `foo` specializes an item from a parent `impl`, but that item is not marked `default`
  --> $DIR/non-defaulted-item-fail.rs:34:5
   |
LL | impl<T> Foo for Box<T> {
   | ---------------------- parent `impl` is here
...
LL |     fn foo(&self) -> bool { true }
   |     ^^^^^^^^^^^^^^^^^^^^^ cannot specialize default item `foo`
   |
   = note: to specialize, `foo` in the parent `impl` must be marked `default`

error[E0520]: `Ty` specializes an item from a parent `impl`, but that item is not marked `default`
  --> $DIR/non-defaulted-item-fail.rs:46:5
   |
LL | impl<T> Foo for Vec<T> {}
   | ---------------------- parent `impl` is here
...
LL |     type Ty = Vec<()>;
   |     ^^^^^^^ cannot specialize default item `Ty`
   |
   = note: to specialize, `Ty` in the parent `impl` must be marked `default`

error[E0520]: `CONST` specializes an item from a parent `impl`, but that item is not marked `default`
  --> $DIR/non-defaulted-item-fail.rs:48:5
   |
LL | impl<T> Foo for Vec<T> {}
   | ---------------------- parent `impl` is here
...
LL |     const CONST: u8 = 42;
   |     ^^^^^^^^^^^^^^^ cannot specialize default item `CONST`
   |
   = note: to specialize, `CONST` in the parent `impl` must be marked `default`

error[E0520]: `foo` specializes an item from a parent `impl`, but that item is not marked `default`
  --> $DIR/non-defaulted-item-fail.rs:50:5
   |
LL | impl<T> Foo for Vec<T> {}
   | ---------------------- parent `impl` is here
...
LL |     fn foo(&self) -> bool { true }
   |     ^^^^^^^^^^^^^^^^^^^^^ cannot specialize default item `foo`
   |
   = note: to specialize, `foo` in the parent `impl` must be marked `default`

error: aborting due to 6 previous errors; 1 warning emitted

For more information about this error, try `rustc --explain E0520`.