error[E0503]: cannot use `arr` because it was mutably borrowed --> $DIR/arrays.rs:14:5 | LL | let mut c = || { | -- borrow of `arr` occurs here LL | arr[0] += 10; | --- borrow occurs due to use of `arr` in closure ... LL | arr[1] += 10; | ^^^^^^ use of borrowed `arr` ... LL | c(); | - borrow later used here error[E0503]: cannot use `arr[_]` because it was mutably borrowed --> $DIR/arrays.rs:14:5 | LL | let mut c = || { | -- borrow of `arr` occurs here LL | arr[0] += 10; | --- borrow occurs due to use of `arr` in closure ... LL | arr[1] += 10; | ^^^^^^^^^^^^ use of borrowed `arr` ... LL | c(); | - borrow later used here error[E0506]: cannot assign to `arr[_]` because it is borrowed --> $DIR/arrays.rs:29:5 | LL | let c = || { | -- borrow of `arr[_]` occurs here LL | println!("{:#?}", &arr[3..4]); | --- borrow occurs due to use in closure ... LL | arr[1] += 10; | ^^^^^^^^^^^^ assignment to borrowed `arr[_]` occurs here LL | LL | c(); | - borrow later used here error[E0506]: cannot assign to `arr[_]` because it is borrowed --> $DIR/arrays.rs:43:5 | LL | let c = || { | -- borrow of `arr[_]` occurs here LL | println!("{}", arr[3]); | --- borrow occurs due to use in closure ... LL | arr[1] += 10; | ^^^^^^^^^^^^ assignment to borrowed `arr[_]` occurs here LL | LL | c(); | - borrow later used here error[E0503]: cannot use `arr` because it was mutably borrowed --> $DIR/arrays.rs:57:20 | LL | let mut c = || { | -- borrow of `arr` occurs here LL | arr[1] += 10; | --- borrow occurs due to use of `arr` in closure ... LL | println!("{}", arr[3]); | ^^^^^^ use of borrowed `arr` ... LL | c(); | - borrow later used here error[E0502]: cannot borrow `arr[_]` as immutable because it is also borrowed as mutable --> $DIR/arrays.rs:57:20 | LL | let mut c = || { | -- mutable borrow occurs here LL | arr[1] += 10; | --- first borrow occurs due to use of `arr` in closure ... LL | println!("{}", arr[3]); | ^^^^^^ immutable borrow occurs here ... LL | c(); | - mutable borrow later used here | = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0502]: cannot borrow `arr` as immutable because it is also borrowed as mutable --> $DIR/arrays.rs:73:24 | LL | let mut c = || { | -- mutable borrow occurs here LL | arr[1] += 10; | --- first borrow occurs due to use of `arr` in closure ... LL | println!("{:#?}", &arr[3..2]); | ^^^ immutable borrow occurs here ... LL | c(); | - mutable borrow later used here error: aborting due to 7 previous errors Some errors have detailed explanations: E0502, E0503, E0506. For more information about an error, try `rustc --explain E0502`.