error[E0596]: cannot borrow immutable item `y` as mutable
--> $DIR/augmented-assignments.rs:30:5
|
+LL | let y = Int(2);
+ | - help: consider changing this to be mutable: `mut y`
+LL | //~^ consider changing this to `mut y`
LL | y //~ error: cannot borrow immutable local variable `y` as mutable
| ^ cannot borrow as mutable
--> $DIR/issue-45983.rs:17:18
|
LL | give_any(|y| x = Some(y));
- | ^^^^^^^^^^^ cannot mutate
- |
- = note: the value which is causing this path not to be mutable is...: `x`
+ | ^^^^^^^^^^^ cannot assign
error[E0596]: cannot borrow immutable item `x` as mutable
--> $DIR/issue-45983.rs:17:14
|
+LL | let x = None;
+ | - help: consider changing this to be mutable: `mut x`
LL | give_any(|y| x = Some(y));
| ^^^^^^^^^^^^^^^ cannot borrow as mutable
error[E0596]: cannot borrow immutable item `b` as mutable
--> $DIR/mut-borrow-of-mut-ref.rs:18:7
|
+LL | fn f(b: &mut i32) {
+ | - help: consider changing this to be mutable: `mut b`
LL | g(&mut b) //~ ERROR cannot borrow
| ^^^^^^ cannot borrow as mutable
error[E0596]: cannot borrow immutable item `x` as mutable
--> $DIR/huge_multispan_highlight.rs:100:13
|
+LL | let x = "foo";
+ | - help: consider changing this to be mutable: `mut x`
+...
LL | let y = &mut x; //~ ERROR cannot borrow
| ^^^^^^ cannot borrow as mutable
error[E0596]: cannot borrow immutable item `self` as mutable
--> $DIR/issue-31424.rs:23:9
|
+LL | fn bar(self: &mut Self) {
+ | ---- help: consider changing this to be mutable: `mut self`
LL | (&mut self).bar(); //~ ERROR cannot borrow
| ^^^^^^^^^^^ cannot borrow as mutable
--> $DIR/issue-34126.rs:16:18
|
LL | self.run(&mut self); //~ ERROR cannot borrow
- | ^^^^^^^^^ cannot borrow as mutable
+ | ^^^^^^^^^
+ | |
+ | cannot borrow as mutable
+ | try removing `&mut` here
error[E0502]: cannot borrow `self` as mutable because it is also borrowed as immutable
--> $DIR/issue-34126.rs:16:18
--> $DIR/issue-34337.rs:16:9
|
LL | get(&mut key); //~ ERROR cannot borrow
- | ^^^^^^^^ cannot borrow as mutable
+ | ^^^^^^^^
+ | |
+ | cannot borrow as mutable
+ | try removing `&mut` here
error: aborting due to previous error
error[E0596]: cannot borrow immutable item `f.v` as mutable
--> $DIR/issue-35937.rs:17:5
|
+LL | let f = Foo { v: Vec::new() };
+ | - help: consider changing this to be mutable: `mut f`
LL | f.v.push("cat".to_string()); //~ ERROR cannot borrow
| ^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `f`
error[E0384]: cannot assign twice to immutable variable `s.x`
--> $DIR/issue-35937.rs:26:5
--> $DIR/issue-37139.rs:22:18
|
LL | test(&mut x); //~ ERROR cannot borrow immutable
- | ^^^^^^ cannot borrow as mutable
+ | ^^^^^^
+ | |
+ | cannot borrow as mutable
+ | try removing `&mut` here
error: aborting due to previous error
error[E0596]: cannot borrow immutable item `*self.s` as mutable
--> $DIR/issue-38147-1.rs:27:9
|
+LL | fn f(&self) {
+ | ----- help: consider changing this to be a mutable reference: `&mut Foo<'_>`
LL | self.s.push('x'); //~ ERROR cannot borrow data mutably
- | ^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*self`
+ | ^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error: aborting due to previous error
error[E0596]: cannot borrow immutable item `*f.s` as mutable
--> $DIR/issue-38147-4.rs:16:5
|
+LL | fn f(x: usize, f: &Foo) {
+ | ---- help: consider changing this to be a mutable reference: `&mut Foo<'_>`
LL | f.s.push('x'); //~ ERROR cannot borrow data mutably
- | ^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*f`
+ | ^^^ `f` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error: aborting due to previous error
error[E0596]: cannot borrow immutable item `z.x` as mutable
--> $DIR/issue-39544.rs:21:13
|
+LL | let z = Z { x: X::Y };
+ | - help: consider changing this to be mutable: `mut z`
LL | let _ = &mut z.x; //~ ERROR cannot borrow
| ^^^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `z`
error[E0596]: cannot borrow immutable item `self.x` as mutable
--> $DIR/issue-39544.rs:26:17
|
+LL | fn foo<'z>(&'z self) {
+ | -------- help: consider changing this to be a mutable reference: `&mut Z`
LL | let _ = &mut self.x; //~ ERROR cannot borrow
- | ^^^^^^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*self`
+ | ^^^^^^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `self.x` as mutable
--> $DIR/issue-39544.rs:30:17
|
+LL | fn foo1(&self, other: &Z) {
+ | ----- help: consider changing this to be a mutable reference: `&mut Z`
LL | let _ = &mut self.x; //~ ERROR cannot borrow
- | ^^^^^^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*self`
+ | ^^^^^^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `other.x` as mutable
--> $DIR/issue-39544.rs:31:17
|
+LL | fn foo1(&self, other: &Z) {
+ | -- help: consider changing this to be a mutable reference: `&mut Z`
+LL | let _ = &mut self.x; //~ ERROR cannot borrow
LL | let _ = &mut other.x; //~ ERROR cannot borrow
- | ^^^^^^^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*other`
+ | ^^^^^^^^^^^^ `other` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `self.x` as mutable
--> $DIR/issue-39544.rs:35:17
|
+LL | fn foo2<'a>(&'a self, other: &Z) {
+ | -------- help: consider changing this to be a mutable reference: `&mut Z`
LL | let _ = &mut self.x; //~ ERROR cannot borrow
- | ^^^^^^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*self`
+ | ^^^^^^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `other.x` as mutable
--> $DIR/issue-39544.rs:36:17
|
+LL | fn foo2<'a>(&'a self, other: &Z) {
+ | -- help: consider changing this to be a mutable reference: `&mut Z`
+LL | let _ = &mut self.x; //~ ERROR cannot borrow
LL | let _ = &mut other.x; //~ ERROR cannot borrow
- | ^^^^^^^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*other`
+ | ^^^^^^^^^^^^ `other` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `self.x` as mutable
--> $DIR/issue-39544.rs:40:17
|
+LL | fn foo3<'a>(self: &'a Self, other: &Z) {
+ | -------- help: consider changing this to be a mutable reference: `&mut Z`
LL | let _ = &mut self.x; //~ ERROR cannot borrow
- | ^^^^^^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*self`
+ | ^^^^^^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `other.x` as mutable
--> $DIR/issue-39544.rs:41:17
|
+LL | fn foo3<'a>(self: &'a Self, other: &Z) {
+ | -- help: consider changing this to be a mutable reference: `&mut Z`
+LL | let _ = &mut self.x; //~ ERROR cannot borrow
LL | let _ = &mut other.x; //~ ERROR cannot borrow
- | ^^^^^^^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*other`
+ | ^^^^^^^^^^^^ `other` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `other.x` as mutable
--> $DIR/issue-39544.rs:45:17
|
+LL | fn foo4(other: &Z) {
+ | -- help: consider changing this to be a mutable reference: `&mut Z`
LL | let _ = &mut other.x; //~ ERROR cannot borrow
- | ^^^^^^^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*other`
+ | ^^^^^^^^^^^^ `other` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `z.x` as mutable
--> $DIR/issue-39544.rs:51:13
|
+LL | pub fn with_arg(z: Z, w: &Z) {
+ | - help: consider changing this to be mutable: `mut z`
LL | let _ = &mut z.x; //~ ERROR cannot borrow
| ^^^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `z`
error[E0596]: cannot borrow immutable item `w.x` as mutable
--> $DIR/issue-39544.rs:52:13
|
+LL | pub fn with_arg(z: Z, w: &Z) {
+ | -- help: consider changing this to be a mutable reference: `&mut Z`
+LL | let _ = &mut z.x; //~ ERROR cannot borrow
LL | let _ = &mut w.x; //~ ERROR cannot borrow
- | ^^^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*w`
+ | ^^^^^^^^ `w` is a `&` reference, so the data it refers to cannot be borrowed as mutable
-error[E0594]: cannot assign to immutable item `*x.0`
+error[E0594]: cannot assign to `*x.0` which is behind a `&` reference
--> $DIR/issue-39544.rs:58:5
|
LL | *x.0 = 1;
- | ^^^^^^^^ cannot mutate
+ | ^^^^^^^^ cannot assign
error: aborting due to 12 previous errors
error[E0596]: cannot borrow immutable item `*buf` as mutable
--> $DIR/issue-40823.rs:13:5
|
+LL | let mut buf = &[1, 2, 3, 4];
+ | ------------- help: consider changing this to be a mutable reference: `&mut [1, 2, 3, 4]`
LL | buf.iter_mut(); //~ ERROR cannot borrow immutable borrowed content
- | ^^^ cannot borrow as mutable
+ | ^^^ `buf` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error: aborting due to previous error
-error[E0594]: cannot assign to data in a `&` reference
+error[E0594]: cannot assign to `fancy_ref.num` which is behind a `&` reference
--> $DIR/E0389.rs:18:5
|
LL | let fancy_ref = &(&mut fancy);
error[E0596]: cannot borrow immutable item `*x` as mutable
--> $DIR/issue-36400.rs:15:7
|
+LL | let x = Box::new(3);
+ | - help: consider changing this to be mutable: `mut x`
LL | f(&mut *x); //~ ERROR cannot borrow immutable
| ^^^^^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `x`
error: aborting due to previous error
error[E0596]: cannot borrow immutable item `y` as mutable
--> $DIR/ex3-both-anon-regions-using-fn-items.rs:11:3
|
+LL | fn foo(x:fn(&u8, &u8), y: Vec<&u8>, z: &u8) {
+ | - help: consider changing this to be mutable: `mut y`
LL | y.push(z); //~ ERROR lifetime mismatch
| ^ cannot borrow as mutable
error[E0596]: cannot borrow immutable item `y` as mutable
--> $DIR/ex3-both-anon-regions-using-trait-objects.rs:11:3
|
+LL | fn foo(x:Box<Fn(&u8, &u8)> , y: Vec<&u8>, z: &u8) {
+ | - help: consider changing this to be mutable: `mut y`
LL | y.push(z); //~ ERROR lifetime mismatch
| ^ cannot borrow as mutable
error[E0596]: cannot borrow immutable item `foo` as mutable
--> $DIR/span-covering-argument-1.rs:15:14
|
+LL | let $s = 0;
+ | -- help: consider changing this to be mutable: `mut foo`
LL | *&mut $s = 0;
| ^^^^^^^ cannot borrow as mutable
...
-error[E0594]: cannot assign to data in a `&` reference
+error[E0594]: cannot assign to `fancy_ref.num` which is behind a `&` reference
--> $DIR/issue-47388.rs:18:5
|
LL | let fancy_ref = &(&mut fancy);
-error[E0594]: cannot assign to data in a `&` reference
+error[E0594]: cannot assign to `*x` which is behind a `&` reference
--> $DIR/enum.rs:19:5
|
-LL | let Wrap(x) = &Wrap(3);
- | - help: consider changing this to be a mutable reference: `&mut`
LL | *x += 1; //~ ERROR cannot assign to immutable
- | ^^^^^^^
+ | ^^^^^^^ cannot assign
-error[E0594]: cannot assign to data in a `&` reference
+error[E0594]: cannot assign to `*x` which is behind a `&` reference
--> $DIR/enum.rs:23:9
|
-LL | if let Some(x) = &Some(3) {
- | - help: consider changing this to be a mutable reference: `&mut`
LL | *x += 1; //~ ERROR cannot assign to immutable
- | ^^^^^^^
+ | ^^^^^^^ cannot assign
-error[E0594]: cannot assign to data in a `&` reference
+error[E0594]: cannot assign to `*x` which is behind a `&` reference
--> $DIR/enum.rs:29:9
|
-LL | while let Some(x) = &Some(3) {
- | - help: consider changing this to be a mutable reference: `&mut`
LL | *x += 1; //~ ERROR cannot assign to immutable
- | ^^^^^^^
+ | ^^^^^^^ cannot assign
error: aborting due to 3 previous errors
-error[E0594]: cannot assign to data in a `&` reference
+error[E0594]: cannot assign to `*n` which is behind a `&` reference
--> $DIR/explicit-mut.rs:17:13
|
-LL | Some(n) => {
- | - help: consider changing this to be a mutable reference: `&mut`
LL | *n += 1; //~ ERROR cannot assign to immutable
- | ^^^^^^^
+ | ^^^^^^^ cannot assign
-error[E0594]: cannot assign to data in a `&` reference
+error[E0594]: cannot assign to `*n` which is behind a `&` reference
--> $DIR/explicit-mut.rs:25:13
|
-LL | Some(n) => {
- | - help: consider changing this to be a mutable reference: `&mut`
LL | *n += 1; //~ ERROR cannot assign to immutable
- | ^^^^^^^
+ | ^^^^^^^ cannot assign
-error[E0594]: cannot assign to data in a `&` reference
+error[E0594]: cannot assign to `*n` which is behind a `&` reference
--> $DIR/explicit-mut.rs:33:13
|
-LL | Some(n) => {
- | - help: consider changing this to be a mutable reference: `&mut`
LL | *n += 1; //~ ERROR cannot assign to immutable
- | ^^^^^^^
+ | ^^^^^^^ cannot assign
error: aborting due to 3 previous errors
error[E0596]: cannot borrow immutable item `x` as mutable
--> $DIR/borrowck-borrow-overloaded-auto-deref-mut.rs:63:24
|
+LL | fn deref_mut_field1(x: Own<Point>) {
+ | - help: consider changing this to be mutable: `mut x`
LL | let __isize = &mut x.y; //~ ERROR cannot borrow
| ^ cannot borrow as mutable
error[E0596]: cannot borrow immutable item `*x` as mutable
--> $DIR/borrowck-borrow-overloaded-auto-deref-mut.rs:75:10
|
+LL | fn deref_extend_mut_field1(x: &Own<Point>) -> &mut isize {
+ | ----------- help: consider changing this to be a mutable reference: `&mut Own<Point>`
LL | &mut x.y //~ ERROR cannot borrow
- | ^ cannot borrow as mutable
+ | ^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `x` as mutable
--> $DIR/borrowck-borrow-overloaded-auto-deref-mut.rs:98:5
|
+LL | fn assign_field1<'a>(x: Own<Point>) {
+ | - help: consider changing this to be mutable: `mut x`
LL | x.y = 3; //~ ERROR cannot borrow
| ^ cannot borrow as mutable
error[E0596]: cannot borrow immutable item `*x` as mutable
--> $DIR/borrowck-borrow-overloaded-auto-deref-mut.rs:102:5
|
+LL | fn assign_field2<'a>(x: &'a Own<Point>) {
+ | -------------- help: consider changing this to be a mutable reference: `&mut Own<Point>`
LL | x.y = 3; //~ ERROR cannot borrow
- | ^ cannot borrow as mutable
+ | ^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `x` as mutable
--> $DIR/borrowck-borrow-overloaded-auto-deref-mut.rs:119:5
|
+LL | fn deref_mut_method1(x: Own<Point>) {
+ | - help: consider changing this to be mutable: `mut x`
LL | x.set(0, 0); //~ ERROR cannot borrow
| ^ cannot borrow as mutable
error[E0596]: cannot borrow immutable item `*x` as mutable
--> $DIR/borrowck-borrow-overloaded-auto-deref-mut.rs:131:5
|
+LL | fn deref_extend_mut_method1(x: &Own<Point>) -> &mut isize {
+ | ----------- help: consider changing this to be a mutable reference: `&mut Own<Point>`
LL | x.y_mut() //~ ERROR cannot borrow
- | ^ cannot borrow as mutable
+ | ^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `x` as mutable
--> $DIR/borrowck-borrow-overloaded-auto-deref-mut.rs:139:6
|
+LL | fn assign_method1<'a>(x: Own<Point>) {
+ | - help: consider changing this to be mutable: `mut x`
LL | *x.y_mut() = 3; //~ ERROR cannot borrow
| ^ cannot borrow as mutable
error[E0596]: cannot borrow immutable item `*x` as mutable
--> $DIR/borrowck-borrow-overloaded-auto-deref-mut.rs:143:6
|
+LL | fn assign_method2<'a>(x: &'a Own<Point>) {
+ | -------------- help: consider changing this to be a mutable reference: `&mut Own<Point>`
LL | *x.y_mut() = 3; //~ ERROR cannot borrow
- | ^ cannot borrow as mutable
+ | ^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error: aborting due to 8 previous errors
error[E0596]: cannot borrow immutable item `x` as mutable
--> $DIR/borrowck-borrow-overloaded-deref-mut.rs:39:25
|
+LL | fn deref_mut1(x: Own<isize>) {
+ | - help: consider changing this to be mutable: `mut x`
LL | let __isize = &mut *x; //~ ERROR cannot borrow
| ^ cannot borrow as mutable
error[E0596]: cannot borrow immutable item `*x` as mutable
--> $DIR/borrowck-borrow-overloaded-deref-mut.rs:51:11
|
+LL | fn deref_extend_mut1<'a>(x: &'a Own<isize>) -> &'a mut isize {
+ | -------------- help: consider changing this to be a mutable reference: `&mut Own<isize>`
LL | &mut **x //~ ERROR cannot borrow
- | ^^ cannot borrow as mutable
+ | ^^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `x` as mutable
--> $DIR/borrowck-borrow-overloaded-deref-mut.rs:59:6
|
+LL | fn assign1<'a>(x: Own<isize>) {
+ | - help: consider changing this to be mutable: `mut x`
LL | *x = 3; //~ ERROR cannot borrow
| ^ cannot borrow as mutable
error[E0596]: cannot borrow immutable item `*x` as mutable
--> $DIR/borrowck-borrow-overloaded-deref-mut.rs:63:6
|
+LL | fn assign2<'a>(x: &'a Own<isize>) {
+ | -------------- help: consider changing this to be a mutable reference: `&mut Own<isize>`
LL | **x = 3; //~ ERROR cannot borrow
- | ^^ cannot borrow as mutable
+ | ^^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error: aborting due to 4 previous errors
error[E0596]: cannot borrow immutable item `*f` as mutable
--> $DIR/borrowck-call-is-borrow-issue-12224.rs:35:5
|
+LL | fn test2<F>(f: &F) where F: FnMut() {
+ | -- help: consider changing this to be a mutable reference: `&mut F`
LL | (*f)();
- | ^^^^ cannot borrow as mutable
+ | ^^^^ `f` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `*f.f` as mutable
--> $DIR/borrowck-call-is-borrow-issue-12224.rs:44:5
|
+LL | fn test4(f: &Test) {
+ | ----- help: consider changing this to be a mutable reference: `&mut Test<'_>`
LL | f.f.call_mut(())
- | ^^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*f`
+ | ^^^ `f` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0507]: cannot move out of borrowed content
--> $DIR/borrowck-call-is-borrow-issue-12224.rs:66:13
error[E0596]: cannot borrow immutable item `*x` as mutable
--> $DIR/borrowck-call-method-from-mut-aliasable.rs:27:5
|
+LL | fn b(x: &Foo) {
+ | ---- help: consider changing this to be a mutable reference: `&mut Foo`
+LL | x.f();
LL | x.h(); //~ ERROR cannot borrow
- | ^ cannot borrow as mutable
+ | ^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error: aborting due to previous error
error[E0596]: cannot borrow immutable item `*x` as mutable
--> $DIR/borrowck-fn-in-const-b.rs:17:9
|
+LL | fn broken(x: &Vec<String>) {
+ | ------------ help: consider changing this to be a mutable reference: `&mut std::vec::Vec<std::string::String>`
LL | x.push(format!("this is broken"));
- | ^ cannot borrow as mutable
+ | ^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error: aborting due to previous error
error[E0596]: cannot borrow immutable item `*x` as mutable
--> $DIR/borrowck-object-mutability.rs:19:5
|
+LL | fn borrowed_receiver(x: &Foo) {
+ | ---- help: consider changing this to be a mutable reference: `&mut Foo`
+LL | x.borrowed();
LL | x.borrowed_mut(); //~ ERROR cannot borrow
- | ^ cannot borrow as mutable
+ | ^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `*x` as mutable
--> $DIR/borrowck-object-mutability.rs:29:5
|
+LL | fn owned_receiver(x: Box<Foo>) {
+ | - help: consider changing this to be mutable: `mut x`
+LL | x.borrowed();
LL | x.borrowed_mut(); //~ ERROR cannot borrow
| ^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `x`
error: aborting due to 2 previous errors
error[E0596]: cannot borrow immutable item `*a` as mutable
--> $DIR/mut-arg-hint.rs:13:9
|
+LL | fn foo(mut a: &String) {
+ | ------- help: consider changing this to be a mutable reference: `&mut std::string::String`
LL | a.push_str("bar"); //~ ERROR cannot borrow immutable borrowed content
- | ^ cannot borrow as mutable
+ | ^ `a` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `*a` as mutable
--> $DIR/mut-arg-hint.rs:18:5
|
+LL | pub fn foo<'a>(mut a: &'a String) {
+ | ---------- help: consider changing this to be a mutable reference: `&mut std::string::String`
LL | a.push_str("foo"); //~ ERROR cannot borrow immutable borrowed content
- | ^ cannot borrow as mutable
+ | ^ `a` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `*a` as mutable
--> $DIR/mut-arg-hint.rs:25:9
|
+LL | pub fn foo(mut a: &String) {
+ | ------- help: consider changing this to be a mutable reference: `&mut std::string::String`
LL | a.push_str("foo"); //~ ERROR cannot borrow immutable borrowed content
- | ^ cannot borrow as mutable
+ | ^ `a` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error: aborting due to 3 previous errors
--> $DIR/closure-immutable-outer-variable.rs:21:26
|
LL | foo(Box::new(move || y = false) as Box<_>); //~ ERROR cannot assign to captured outer variable
- | ^^^^^^^^^ cannot mutate
+ | ^^^^^^^^^ cannot assign
error: aborting due to previous error
-error[E0594]: cannot assign to immutable item `x`
+error[E0594]: cannot assign to `x` which is behind a `&` reference
--> $DIR/fn-closure-mutable-capture.rs:15:17
|
LL | bar(move || x = 1);
- | ^^^^^ cannot mutate
+ | ^^^^^ cannot assign
error: aborting due to previous error
error[E0596]: cannot borrow immutable item `**t` as mutable
--> $DIR/trivial-bounds-inconsistent-copy-reborrow.rs:16:5
|
+LL | fn reborrow_mut<'a>(t: &'a &'a mut i32) -> &'a mut i32 where &'a mut i32: Copy {
+ | --------------- help: consider changing this to be a mutable reference: `&mut &mut i32`
LL | *t //~ ERROR
- | ^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*t`
+ | ^^ `t` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error[E0596]: cannot borrow immutable item `**t` as mutable
--> $DIR/trivial-bounds-inconsistent-copy-reborrow.rs:20:6
|
+LL | fn copy_reborrow_mut<'a>(t: &'a &'a mut i32) -> &'a mut i32 where &'a mut i32: Copy {
+ | --------------- help: consider changing this to be a mutable reference: `&mut &mut i32`
LL | {*t} //~ ERROR
- | ^^ cannot borrow as mutable
- |
- = note: the value which is causing this path not to be mutable is...: `*t`
+ | ^^ `t` is a `&` reference, so the data it refers to cannot be borrowed as mutable
error: aborting due to 2 previous errors
projects / rust.git / commitdiff