1 error[E0121]: the placeholder `_` is not allowed within types on item signatures for static items
2 --> $DIR/issue-88643.rs:10:56
4 LL | static CALLBACKS: HashMap<*const dyn T, dyn FnMut(&mut _) + 'static> = HashMap::new();
5 | ^ not allowed in type signatures
7 error[E0121]: the placeholder `_` is not allowed within types on item signatures for static items
8 --> $DIR/issue-88643.rs:13:33
10 LL | static CALLBACKS2: Vec<dyn Fn(& _)> = Vec::new();
11 | ^ not allowed in type signatures
13 error[E0121]: the placeholder `_` is not allowed within types on item signatures for static items
14 --> $DIR/issue-88643.rs:16:36
16 LL | static CALLBACKS3: Option<dyn Fn(& _)> = None;
17 | ^ not allowed in type signatures
19 error: aborting due to 3 previous errors
21 For more information about this error, try `rustc --explain E0121`.