rust/tests/ui/pattern/bindings-after-at/borrowck-pat-ref-mut-and-ref.stderr
2023-01-11 09:32:08 +00:00

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Plaintext

error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:8:9
|
LL | ref mut z @ &mut Some(ref a) => {
| ---------^^^^^^^^^^^^^-----^
| | |
| | immutable borrow, by `a`, occurs here
| mutable borrow, by `z`, occurs here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:33:9
|
LL | let ref mut a @ (ref b @ ref mut c) = u(); // sub-in-sub
| ---------^^^^-----------------^
| | | |
| | | another mutable borrow, by `c`, occurs here
| | also borrowed as immutable, by `b`, here
| first mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:33:22
|
LL | let ref mut a @ (ref b @ ref mut c) = u(); // sub-in-sub
| -----^^^---------
| | |
| | mutable borrow, by `c`, occurs here
| immutable borrow, by `b`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:37:9
|
LL | let ref a @ ref mut b = U;
| -----^^^---------
| | |
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:39:9
|
LL | let ref mut a @ ref b = U;
| ---------^^^-----
| | |
| | immutable borrow, by `b`, occurs here
| mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:41:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| -----^^^^---------^^---------^
| | | |
| | | mutable borrow, by `c`, occurs here
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:43:9
|
LL | let ref mut a @ (ref b, ref c) = (U, U);
| ---------^^^^-----^^-----^
| | | |
| | | immutable borrow, by `c`, occurs here
| | immutable borrow, by `b`, occurs here
| mutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:46:9
|
LL | let ref mut a @ ref b = u();
| ---------^^^-----
| | |
| | immutable borrow, by `b`, occurs here
| mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:51:9
|
LL | let ref a @ ref mut b = u();
| -----^^^---------
| | |
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:57:9
|
LL | let ref mut a @ ref b = U;
| ---------^^^-----
| | |
| | immutable borrow, by `b`, occurs here
| mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:61:9
|
LL | let ref a @ ref mut b = U;
| -----^^^---------
| | |
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:67:9
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) => {
| ---------^^^^^^-----^
| | |
| | immutable borrow, by `b`, occurs here
| mutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:67:33
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) => {
| ---------^^^^^^^-----^
| | |
| | immutable borrow, by `b`, occurs here
| mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:76:9
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) => {
| -----^^^^^^---------^
| | |
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:76:33
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) => {
| -----^^^^^^^---------^
| | |
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:87:9
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { *b = U; false } => {}
| -----^^^^^^---------^
| | |
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:87:33
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { *b = U; false } => {}
| -----^^^^^^^---------^
| | |
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:94:9
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { *a = Err(U); false } => {}
| ---------^^^^^^-----^
| | |
| | immutable borrow, by `b`, occurs here
| mutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:94:33
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { *a = Err(U); false } => {}
| ---------^^^^^^^-----^
| | |
| | immutable borrow, by `b`, occurs here
| mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:101:9
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
| -----^^^^^^---------^
| | |
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:101:33
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
| -----^^^^^^^---------^
| | |
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:109:9
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false } => {}
| ---------^^^^^^-----^
| | |
| | immutable borrow, by `b`, occurs here
| mutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:109:33
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false } => {}
| ---------^^^^^^^-----^
| | |
| | immutable borrow, by `b`, occurs here
| mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:117:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| -----^^^^---------^^---------^
| | | |
| | | mutable borrow, by `c`, occurs here
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:123:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| -----^^^^---------^^---------^
| | | |
| | | mutable borrow, by `c`, occurs here
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:129:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| -----^^^^---------^^---------^
| | | |
| | | mutable borrow, by `c`, occurs here
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:134:9
|
LL | let ref mut a @ (ref b, ref c) = (U, U);
| ---------^^^^-----^^-----^
| | | |
| | | immutable borrow, by `c`, occurs here
| | immutable borrow, by `b`, occurs here
| mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:22:11
|
LL | fn f1(ref a @ ref mut b: U) {}
| -----^^^---------
| | |
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:24:11
|
LL | fn f2(ref mut a @ ref b: U) {}
| ---------^^^-----
| | |
| | immutable borrow, by `b`, occurs here
| mutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:26:11
|
LL | fn f3(ref a @ [ref b, ref mut mid @ .., ref c]: [U; 4]) {}
| -----^^^^^^^^^^^----------------^^^^^^^^
| | |
| | mutable borrow, by `mid`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:22
|
LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {}
| -----^^^-------------
| | | |
| | | also moved into `c` here
| | mutable borrow, by `b`, occurs here
| immutable borrow, by `a`, occurs here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:30
|
LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {}
| ---------^^^-
| | |
| | value moved into `c` here
| value borrowed, by `b`, here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:8:31
|
LL | ref mut z @ &mut Some(ref a) => {
| --------- ^^^^^ immutable borrow occurs here
| |
| mutable borrow occurs here
...
LL | **z = None;
| ---------- mutable borrow later used here
error[E0502]: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:46:9
|
LL | let ref mut a @ ref b = u();
| ^^^^^^^^^ ----- immutable borrow occurs here
| |
| mutable borrow occurs here
...
LL | drop(b);
| - immutable borrow later used here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:51:9
|
LL | let ref a @ ref mut b = u();
| ^^^^^ --------- mutable borrow occurs here
| |
| immutable borrow occurs here
...
LL | *b = u();
| -------- mutable borrow later used here
error[E0502]: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:76:20
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) => {
| ----- ^^^^^^^^^ mutable borrow occurs here
| |
| immutable borrow occurs here
...
LL | drop(a);
| - immutable borrow later used here
error[E0502]: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:76:45
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) => {
| ----- ^^^^^^^^^ mutable borrow occurs here
| |
| immutable borrow occurs here
...
LL | drop(a);
| - immutable borrow later used here
error[E0594]: cannot assign to `*b`, as it is immutable for the pattern guard
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:87:61
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { *b = U; false } => {}
| ^^^^^^ cannot assign
|
= note: variables bound in patterns are immutable until the end of the pattern guard
error[E0594]: cannot assign to `*a`, as it is immutable for the pattern guard
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:94:61
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { *a = Err(U); false } => {}
| ^^^^^^^^^^^ cannot assign
|
= note: variables bound in patterns are immutable until the end of the pattern guard
error[E0507]: cannot move out of `b` in pattern guard
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:101:66
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
| ^ move occurs because `b` has type `&mut U`, which does not implement the `Copy` trait
|
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
error[E0507]: cannot move out of `b` in pattern guard
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:101:66
|
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
| ^ move occurs because `b` has type `&mut U`, which does not implement the `Copy` trait
|
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
error[E0507]: cannot move out of `a` in pattern guard
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:109:66
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false } => {}
| ^ move occurs because `a` has type `&mut Result<U, U>`, which does not implement the `Copy` trait
|
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
error[E0507]: cannot move out of `a` in pattern guard
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:109:66
|
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false } => {}
| ^ move occurs because `a` has type `&mut Result<U, U>`, which does not implement the `Copy` trait
|
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:117:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| ^^^^^ --------- mutable borrow occurs here
| |
| immutable borrow occurs here
...
LL | *b = U;
| ------ mutable borrow later used here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:123:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| ^^^^^ --------- mutable borrow occurs here
| |
| immutable borrow occurs here
...
LL | *b = U;
| ------ mutable borrow later used here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:129:9
|
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| ^^^^^ --------- mutable borrow occurs here
| |
| immutable borrow occurs here
LL |
LL | *b = U;
| ------ mutable borrow later used here
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:30
|
LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {}
| ----- ^^^^^^^^^ - value moved here
| | |
| | value borrowed here after move
| move occurs because value has type `U`, which does not implement the `Copy` trait
error: aborting due to 47 previous errors
Some errors have detailed explanations: E0382, E0502, E0507, E0594.
For more information about an error, try `rustc --explain E0382`.