rust/tests/ui/type/ascription/issue-54516.stderr

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error: path separator must be a double colon
--> $DIR/issue-54516.rs:5:28
|
LL | println!("{}", std::mem:size_of::<BTreeMap<u32, u32>>());
| ^ help: use a double colon instead: `::`
|
= note: if you meant to annotate an expression with a type, the type ascription syntax has been removed, see issue #101728 <https://github.com/rust-lang/rust/issues/101728>
error: aborting due to 1 previous error