error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable (Ast)
  --> $DIR/get_default.rs:33:17
   |
LL |         match map.get() {
   |               --- immutable borrow occurs here
...
LL |                 map.set(String::new()); // Ideally, this would not error.
   |                 ^^^ mutable borrow occurs here
...
LL | }
   | - immutable borrow ends here

error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable (Ast)
  --> $DIR/get_default.rs:45:17
   |
LL |         match map.get() {
   |               --- immutable borrow occurs here
LL |             Some(v) => {
LL |                 map.set(String::new()); // Both AST and MIR error here
   |                 ^^^ mutable borrow occurs here
...
LL | }
   | - immutable borrow ends here

error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable (Ast)
  --> $DIR/get_default.rs:51:17
   |
LL |         match map.get() {
   |               --- immutable borrow occurs here
...
LL |                 map.set(String::new()); // Ideally, just AST would error here
   |                 ^^^ mutable borrow occurs here
...
LL | }
   | - immutable borrow ends here

error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable (Mir)
  --> $DIR/get_default.rs:33:17
   |
LL |         match map.get() {
   |               --- immutable borrow occurs here
...
LL |                 map.set(String::new()); // Ideally, this would not error.
   |                 ^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
   |
note: borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 26:1...
  --> $DIR/get_default.rs:26:1
   |
LL | / fn ok(map: &mut Map) -> &String {
LL | |     loop {
LL | |         match map.get() {
LL | |             Some(v) => {
...  |
LL | |     }
LL | | }
   | |_^

error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable (Mir)
  --> $DIR/get_default.rs:45:17
   |
LL |         match map.get() {
   |               --- immutable borrow occurs here
LL |             Some(v) => {
LL |                 map.set(String::new()); // Both AST and MIR error here
   |                 ^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
   |
note: borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 41:1...
  --> $DIR/get_default.rs:41:1
   |
LL | / fn err(map: &mut Map) -> &String {
LL | |     loop {
LL | |         match map.get() {
LL | |             Some(v) => {
...  |
LL | |     }
LL | | }
   | |_^

error[E0502]: cannot borrow `*map` as mutable because it is also borrowed as immutable (Mir)
  --> $DIR/get_default.rs:51:17
   |
LL |         match map.get() {
   |               --- immutable borrow occurs here
...
LL |                 map.set(String::new()); // Ideally, just AST would error here
   |                 ^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
   |
note: borrowed value must be valid for the anonymous lifetime #1 defined on the function body at 41:1...
  --> $DIR/get_default.rs:41:1
   |
LL | / fn err(map: &mut Map) -> &String {
LL | |     loop {
LL | |         match map.get() {
LL | |             Some(v) => {
...  |
LL | |     }
LL | | }
   | |_^

error: aborting due to 6 previous errors

For more information about this error, try `rustc --explain E0502`.