[rustc.git] / src / test / ui / issues / issue-40510-3.stderr

error: captured variable cannot escape `FnMut` closure body
  --> $DIR/issue-40510-3.rs:7:9
   |
LL |       let mut x: Vec<()> = Vec::new();
   |           ----- variable defined here
LL |
LL |       || {
   |        - inferred to be a `FnMut` closure
LL | /         || {
LL | |             x.push(())
   | |             - variable captured here
LL | |         }
   | |_________^ returns a closure that contains a reference to a captured variable, which then escapes the closure body
   |
   = 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

error: aborting due to previous error
Commit	Line	Data
48663c56	1	error: captured variable cannot escape `FnMut` closure body
e74abb32	2	--> $DIR/issue-40510-3.rs:7:9
48663c56	3	\|
f035d41b XL	4	LL \| let mut x: Vec<()> = Vec::new();
f035d41b XL	5	\| ----- variable defined here
923072b8	6	LL \|
48663c56 XL	7	LL \| \|\| {
	8	\| - inferred to be a `FnMut` closure
	9	LL \| / \|\| {
	10	LL \| \| x.push(())
f035d41b	11	\| \| - variable captured here
48663c56 XL	12	LL \| \| }
	13	\| \|_________^ returns a closure that contains a reference to a captured variable, which then escapes the closure body
	14	\|
	15	= note: `FnMut` closures only have access to their captured variables while they are executing...
	16	= note: ...therefore, they cannot allow references to captured variables to escape
	17
	18	error: aborting due to previous error
	19