diff options
Diffstat (limited to 'tests/ui/closure_context/issue-26046-fn-mut.stderr')
| -rw-r--r-- | tests/ui/closure_context/issue-26046-fn-mut.stderr | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/closure_context/issue-26046-fn-mut.stderr b/tests/ui/closure_context/issue-26046-fn-mut.stderr new file mode 100644 index 000000000..f744b71c2 --- /dev/null +++ b/tests/ui/closure_context/issue-26046-fn-mut.stderr @@ -0,0 +1,16 @@ +error[E0525]: expected a closure that implements the `Fn` trait, but this closure only implements `FnMut` + --> $DIR/issue-26046-fn-mut.rs:4:19 + | +LL | let closure = || { + | ^^ this closure implements `FnMut`, not `Fn` +LL | num += 1; + | --- closure is `FnMut` because it mutates the variable `num` here +... +LL | Box::new(closure) + | ----------------- the requirement to implement `Fn` derives from here + | + = note: required for the cast from `[closure@$DIR/issue-26046-fn-mut.rs:4:19: 4:21]` to the object type `dyn Fn()` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0525`. |