126 lines
4.5 KiB
Plaintext
126 lines
4.5 KiB
Plaintext
error[E0502]: cannot borrow `x` as mutable because it is also borrowed as immutable
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--> $DIR/borrowck-closures-slice-patterns.rs:7:13
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LL | let f = || {
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| -- immutable borrow occurs here
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LL | let [ref y, ref z @ ..] = x;
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| - first borrow occurs due to use of `x` in closure
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LL | };
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LL | let r = &mut x;
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| ^^^^^^ mutable borrow occurs here
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LL |
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LL | f();
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| - immutable borrow later used here
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error[E0502]: cannot borrow `x` as immutable because it is also borrowed as mutable
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--> $DIR/borrowck-closures-slice-patterns.rs:16:13
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LL | let mut f = || {
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| -- mutable borrow occurs here
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LL | let [ref mut y, ref mut z @ ..] = x;
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| - first borrow occurs due to use of `x` in closure
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LL | };
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LL | let r = &x;
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| ^^ immutable borrow occurs here
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LL |
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LL | f();
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| - mutable borrow later used here
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error[E0382]: borrow of moved value: `x`
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--> $DIR/borrowck-closures-slice-patterns.rs:25:5
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LL | fn arr_by_move(x: [String; 3]) {
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| - move occurs because `x` has type `[String; 3]`, which does not implement the `Copy` trait
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LL | let f = || {
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| -- value moved into closure here
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LL | let [y, z @ ..] = x;
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| - variable moved due to use in closure
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LL | };
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LL | &x;
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| ^^ value borrowed here after move
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help: consider cloning the value if the performance cost is acceptable
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LL | let [y, z @ ..] = x.clone();
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| ++++++++
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error[E0502]: cannot borrow `*x` as mutable because it is also borrowed as immutable
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--> $DIR/borrowck-closures-slice-patterns.rs:33:13
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LL | let f = || {
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| -- immutable borrow occurs here
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LL | let [ref y, ref z @ ..] = *x;
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| -- first borrow occurs due to use of `x` in closure
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LL | };
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LL | let r = &mut *x;
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| ^^^^^^^ mutable borrow occurs here
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LL |
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LL | f();
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| - immutable borrow later used here
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error[E0501]: cannot borrow `x` as immutable because previous closure requires unique access
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--> $DIR/borrowck-closures-slice-patterns.rs:42:13
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LL | let mut f = || {
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| -- closure construction occurs here
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LL | let [ref mut y, ref mut z @ ..] = *x;
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| -- first borrow occurs due to use of `x` in closure
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LL | };
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LL | let r = &x;
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| ^^ second borrow occurs here
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LL |
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LL | f();
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| - first borrow later used here
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error[E0382]: borrow of moved value: `x`
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--> $DIR/borrowck-closures-slice-patterns.rs:51:5
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LL | fn arr_box_by_move(x: Box<[String; 3]>) {
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| - move occurs because `x` has type `Box<[String; 3]>`, which does not implement the `Copy` trait
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LL | let f = || {
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| -- value moved into closure here
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LL | let [y, z @ ..] = *x;
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| -- variable moved due to use in closure
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LL | };
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LL | &x;
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| ^^ value borrowed here after move
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help: consider cloning the value if the performance cost is acceptable
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LL - let [y, z @ ..] = *x;
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LL + let [y, z @ ..] = x.clone();
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error[E0502]: cannot borrow `*x` as mutable because it is also borrowed as immutable
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--> $DIR/borrowck-closures-slice-patterns.rs:59:13
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LL | let f = || {
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| -- immutable borrow occurs here
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LL | if let [ref y, ref z @ ..] = *x {}
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| -- first borrow occurs due to use of `x` in closure
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LL | };
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LL | let r = &mut *x;
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| ^^^^^^^ mutable borrow occurs here
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LL |
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LL | f();
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| - immutable borrow later used here
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error[E0501]: cannot borrow `x` as immutable because previous closure requires unique access
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--> $DIR/borrowck-closures-slice-patterns.rs:68:13
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LL | let mut f = || {
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| -- closure construction occurs here
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LL | if let [ref mut y, ref mut z @ ..] = *x {}
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| -- first borrow occurs due to use of `x` in closure
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LL | };
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LL | let r = &x;
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| ^^ second borrow occurs here
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LL |
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LL | f();
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| - first borrow later used here
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error: aborting due to 8 previous errors
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Some errors have detailed explanations: E0382, E0501, E0502.
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For more information about an error, try `rustc --explain E0382`.
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