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|
error[E0594]: cannot assign to `x`, as it is a captured variable in a `Fn` closure
--> $DIR/borrow-immutable-upvar-mutation.rs:21:27
|
LL | fn to_fn<A, F: Fn<A>>(f: F) -> F {
| - change this to accept `FnMut` instead of `Fn`
...
LL | let _f = to_fn(|| x = 42);
| ----- ^^^^^^ cannot assign
| |
| expects `Fn` instead of `FnMut`
error[E0596]: cannot borrow `y` as mutable, as it is a captured variable in a `Fn` closure
--> $DIR/borrow-immutable-upvar-mutation.rs:24:31
|
LL | fn to_fn<A, F: Fn<A>>(f: F) -> F {
| - change this to accept `FnMut` instead of `Fn`
...
LL | let _g = to_fn(|| set(&mut y));
| ----- ^^^^^^ cannot borrow as mutable
| |
| expects `Fn` instead of `FnMut`
error[E0594]: cannot assign to `z`, as it is a captured variable in a `Fn` closure
--> $DIR/borrow-immutable-upvar-mutation.rs:29:22
|
LL | fn to_fn<A, F: Fn<A>>(f: F) -> F {
| - change this to accept `FnMut` instead of `Fn`
...
LL | to_fn(|| z = 42);
| ----- ^^^^^^ cannot assign
| |
| expects `Fn` instead of `FnMut`
error[E0594]: cannot assign to `x`, as it is a captured variable in a `Fn` closure
--> $DIR/borrow-immutable-upvar-mutation.rs:36:32
|
LL | fn to_fn<A, F: Fn<A>>(f: F) -> F {
| - change this to accept `FnMut` instead of `Fn`
...
LL | let _f = to_fn(move || x = 42);
| ----- ^^^^^^ cannot assign
| |
| expects `Fn` instead of `FnMut`
error[E0596]: cannot borrow `y` as mutable, as it is a captured variable in a `Fn` closure
--> $DIR/borrow-immutable-upvar-mutation.rs:39:36
|
LL | fn to_fn<A, F: Fn<A>>(f: F) -> F {
| - change this to accept `FnMut` instead of `Fn`
...
LL | let _g = to_fn(move || set(&mut y));
| ----- ^^^^^^ cannot borrow as mutable
| |
| expects `Fn` instead of `FnMut`
error[E0594]: cannot assign to `z`, as it is a captured variable in a `Fn` closure
--> $DIR/borrow-immutable-upvar-mutation.rs:44:27
|
LL | fn to_fn<A, F: Fn<A>>(f: F) -> F {
| - change this to accept `FnMut` instead of `Fn`
...
LL | to_fn(move || z = 42);
| ----- ^^^^^^ cannot assign
| |
| expects `Fn` instead of `FnMut`
error[E0594]: cannot assign to `x`, as it is a captured variable in a `Fn` closure
--> $DIR/borrow-immutable-upvar-mutation.rs:53:9
|
LL | fn foo() -> Box<dyn Fn() -> usize> {
| --- ---------------------- change this to return `FnMut` instead of `Fn`
LL | let mut x = 0;
LL | Box::new(move || {
| ______________-
LL | | x += 1;
| | ^^^^^^ cannot assign
LL | | x
LL | | })
| |_____- in this closure
error: aborting due to 7 previous errors
Some errors have detailed explanations: E0594, E0596.
For more information about an error, try `rustc --explain E0594`.
|
