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