-error: captured variable cannot escape `FnMut` closure body
+warning: captured variable cannot escape `FnMut` closure body
--> $DIR/issue-40510-1.rs:18:9
|
LL | || {
|
= note: `FnMut` closures only have access to their captured variables while they are executing...
= note: ...therefore, they cannot allow references to captured variables to escape
+ = warning: This error has been downgraded to a warning for backwards compatibility with previous releases.
+ It represents potential unsoundness in your code.
+ This warning will become a hard error in the future.
+
+error: compilation successful
+ --> $DIR/issue-40510-1.rs:23:1
+ |
+LL | fn main() {} //~ ERROR compilation successful
+ | ^^^^^^^^^^^^
error: aborting due to previous error