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error: no rules expected the token `~`
--> tests/ui/parse_expr.rs:4:19
|
4 | json!({ "a" : ~ });
| ^ no rules expected this token in macro call
|
note: while trying to match meta-variable `$e:expr`
--> src/macros.rs
|
| ($e:expr , $($tt:tt)*) => {};
| ^^^^^^^