error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:26:9 | LL | let ref mut a @ ref mut b = U; | ---------^^^--------- | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:29:9 | LL | let ref mut a @ ref mut b = U; | ---------^^^--------- | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:33:9 | LL | let ref mut a @ ref mut b = U; | ---------^^^--------- | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:36:9 | LL | let ref mut a @ ref mut b = U; | ---------^^^--------- | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:39:9 | LL | let ref mut a @ ref mut b = U; | ---------^^^--------- | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:44:9 | LL | let ref mut a @ ( | ^-------- | | | _________first mutable borrow, by `a`, occurs here | | LL | | LL | | ref mut b, | | --------- another mutable borrow, by `b`, occurs here LL | | [ LL | | ref mut c, | | --------- another mutable borrow, by `c`, occurs here LL | | ref mut d, | | --------- another mutable borrow, by `d`, occurs here LL | | ref e, | | ----- also borrowed as immutable, by `e`, here LL | | ] LL | | ) = (U, [U, U, U]); | |_____^ error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:54:9 | LL | let ref mut a @ ( | ^-------- | | | _________first mutable borrow, by `a`, occurs here | | LL | | LL | | ref mut b, | | --------- another mutable borrow, by `b`, occurs here LL | | [ LL | | ref mut c, | | --------- another mutable borrow, by `c`, occurs here LL | | ref mut d, | | --------- another mutable borrow, by `d`, occurs here LL | | ref e, | | ----- also borrowed as immutable, by `e`, here LL | | ] LL | | ) = (u(), [u(), u(), u()]); | |_________^ error: borrow of moved value --> $DIR/borrowck-pat-ref-mut-twice.rs:64:9 | LL | let a @ (ref mut b, ref mut c) = (U, U); | -^^^^---------^^---------^ | | | | | | | value borrowed here after move | | value borrowed here after move | value moved into `a` here | move occurs because `a` has type `(U, U)` which does not implement the `Copy` trait error: borrow of moved value --> $DIR/borrowck-pat-ref-mut-twice.rs:67:9 | LL | let a @ (b, [c, d]) = &mut val; // Same as ^-- | -^^^^-^^^-^^-^^ | | | | | | | | | value borrowed here after move | | | value borrowed here after move | | value borrowed here after move | value moved into `a` here | move occurs because `a` has type `&mut (U, [U; 2])` which does not implement the `Copy` trait error: borrow of moved value --> $DIR/borrowck-pat-ref-mut-twice.rs:70:9 | LL | let a @ &mut ref mut b = &mut U; | -^^^^^^^^--------- | | | | | value borrowed here after move | value moved into `a` here | move occurs because `a` has type `&mut U` which does not implement the `Copy` trait error: borrow of moved value --> $DIR/borrowck-pat-ref-mut-twice.rs:72:9 | LL | let a @ &mut (ref mut b, ref mut c) = &mut (U, U); | -^^^^^^^^^---------^^---------^ | | | | | | | value borrowed here after move | | value borrowed here after move | value moved into `a` here | move occurs because `a` has type `&mut (U, U)` which does not implement the `Copy` trait error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:76:9 | LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | ---------^^^^^^---------^ | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:76:37 | LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | ---------^^^^^^^---------^ | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:82:9 | LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | ---------^^^^^^---------^ | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:82:37 | LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | ---------^^^^^^^---------^ | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:89:9 | LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | ---------^^^^^^---------^ | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:89:37 | LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | ---------^^^^^^^---------^ | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:101:9 | LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | ---------^^^^^^---------^ | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:101:37 | LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | ---------^^^^^^^---------^ | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:8:11 | LL | fn f1(ref mut a @ ref mut b: U) {} | ---------^^^--------- | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:10:11 | LL | fn f2(ref mut a @ ref mut b: U) {} | ---------^^^--------- | | | | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:13:9 | LL | ref mut a @ [ | ^-------- | | | _________first mutable borrow, by `a`, occurs here | | LL | | LL | | [ref b @ .., _], | | ---------- also borrowed as immutable, by `b`, here LL | | [_, ref mut mid @ ..], | | ---------------- another mutable borrow, by `mid`, occurs here LL | | .., LL | | [..], LL | | ] : [[U; 4]; 5] | |_________^ error: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:21:22 | LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {} | ---------^^^------------- | | | | | | | also moved into `c` here | | another mutable borrow, by `b`, occurs here | first mutable borrow, by `a`, occurs here error: cannot move out of value because it is borrowed --> $DIR/borrowck-pat-ref-mut-twice.rs:21:34 | LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {} | ---------^^^- | | | | | value moved into `c` here | value borrowed, by `b`, here error[E0499]: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:29:9 | LL | let ref mut a @ ref mut b = U; | ^^^^^^^^^ --------- first mutable borrow occurs here | | | second mutable borrow occurs here ... LL | drop(b); | - first borrow later used here error[E0499]: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:39:9 | LL | let ref mut a @ ref mut b = U; | ^^^^^^^^^ --------- first mutable borrow occurs here | | | second mutable borrow occurs here ... LL | *b = U; | ------ first borrow later used here error[E0499]: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:89:24 | LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | --------- ^^^^^^^^^ second mutable borrow occurs here | | | first mutable borrow occurs here ... LL | *a = Err(U); | ----------- first borrow later used here error[E0499]: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:89:53 | LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | --------- ^^^^^^^^^ second mutable borrow occurs here | | | first mutable borrow occurs here ... LL | *a = Err(U); | ----------- first borrow later used here error[E0499]: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:101:24 | LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | --------- ^^^^^^^^^ second mutable borrow occurs here | | | first mutable borrow occurs here ... LL | drop(a); | - first borrow later used here error[E0499]: cannot borrow value as mutable more than once at a time --> $DIR/borrowck-pat-ref-mut-twice.rs:101:53 | LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => { | --------- ^^^^^^^^^ second mutable borrow occurs here | | | first mutable borrow occurs here ... LL | drop(a); | - first borrow later used here error[E0382]: borrow of moved value --> $DIR/borrowck-pat-ref-mut-twice.rs:21:34 | LL | fn f4_also_moved(ref mut 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 31 previous errors Some errors have detailed explanations: E0382, E0499. For more information about an error, try `rustc --explain E0382`.