error[E0502]: cannot borrow `s[..]` as mutable because it is also borrowed as immutable --> $DIR/borrowck-slice-pattern-element-loan.rs:28:20 | LL | if let [ref first, ref second, ..] = *s { | ---------- immutable borrow occurs here LL | if let [_, ref mut second2, ref mut third, ..] = *s { //~ERROR | ^^^^^^^^^^^^^^^^ mutable borrow occurs here LL | nop(&[first, second, second2, third]); | ------ borrow later used here error[E0502]: cannot borrow `s[..]` as mutable because it is also borrowed as immutable --> $DIR/borrowck-slice-pattern-element-loan.rs:44:21 | LL | if let [.., ref fourth, ref third, _, ref first] = *s { | --------- immutable borrow occurs here LL | if let [.., ref mut third2, _, _] = *s { //~ERROR | ^^^^^^^^^^^^^^ mutable borrow occurs here LL | nop(&[first, third, third2, fourth]); | ----- borrow later used here error[E0502]: cannot borrow `s[..]` as mutable because it is also borrowed as immutable --> $DIR/borrowck-slice-pattern-element-loan.rs:55:20 | LL | if let [.., _, ref from_end4, ref from_end3, _, ref from_end1] = *s { | ------------- immutable borrow occurs here ... LL | if let [_, ref mut from_begin1, ..] = *s { //~ERROR | ^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here LL | nop(&[from_begin1, from_end1, from_end3, from_end4]); | --------- borrow later used here error[E0502]: cannot borrow `s[..]` as mutable because it is also borrowed as immutable --> $DIR/borrowck-slice-pattern-element-loan.rs:58:23 | LL | if let [.., _, ref from_end4, ref from_end3, _, ref from_end1] = *s { | ------------- immutable borrow occurs here ... LL | if let [_, _, ref mut from_begin2, ..] = *s { //~ERROR | ^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here LL | nop(&[from_begin2, from_end1, from_end3, from_end4]); | --------- borrow later used here error[E0502]: cannot borrow `s[..]` as mutable because it is also borrowed as immutable --> $DIR/borrowck-slice-pattern-element-loan.rs:61:26 | LL | if let [.., _, ref from_end4, ref from_end3, _, ref from_end1] = *s { | ------------- immutable borrow occurs here ... LL | if let [_, _, _, ref mut from_begin3, ..] = *s { //~ERROR | ^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here LL | nop(&[from_begin3, from_end1, from_end3, from_end4]); | --------- borrow later used here error[E0502]: cannot borrow `s[..]` as mutable because it is also borrowed as immutable --> $DIR/borrowck-slice-pattern-element-loan.rs:69:21 | LL | if let [ref from_begin0, ref from_begin1, _, ref from_begin3, _, ..] = *s { | --------------- immutable borrow occurs here ... LL | if let [.., ref mut from_end2, _] = *s { //~ERROR | ^^^^^^^^^^^^^^^^^ mutable borrow occurs here LL | nop(&[from_begin0, from_begin1, from_begin3, from_end2]); | ----------- borrow later used here error[E0502]: cannot borrow `s[..]` as mutable because it is also borrowed as immutable --> $DIR/borrowck-slice-pattern-element-loan.rs:72:21 | LL | if let [ref from_begin0, ref from_begin1, _, ref from_begin3, _, ..] = *s { | --------------- immutable borrow occurs here ... LL | if let [.., ref mut from_end3, _, _] = *s { //~ERROR | ^^^^^^^^^^^^^^^^^ mutable borrow occurs here LL | nop(&[from_begin0, from_begin1, from_begin3, from_end3]); | ----------- borrow later used here error[E0502]: cannot borrow `s[..]` as mutable because it is also borrowed as immutable --> $DIR/borrowck-slice-pattern-element-loan.rs:75:21 | LL | if let [ref from_begin0, ref from_begin1, _, ref from_begin3, _, ..] = *s { | --------------- immutable borrow occurs here ... LL | if let [.., ref mut from_end4, _, _, _] = *s { //~ERROR | ^^^^^^^^^^^^^^^^^ mutable borrow occurs here LL | nop(&[from_begin0, from_begin1, from_begin3, from_end4]); | ----------- borrow later used here error[E0502]: cannot borrow `s[..]` as mutable because it is also borrowed as immutable --> $DIR/borrowck-slice-pattern-element-loan.rs:92:20 | LL | if let [ref first, ref second, ..] = *s { | ---------- immutable borrow occurs here LL | if let [_, ref mut tail..] = *s { //~ERROR | ^^^^^^^^^^^^ mutable borrow occurs here LL | nop(&[first, second]); | ------ borrow later used here error[E0502]: cannot borrow `s[..]` as mutable because it is also borrowed as immutable --> $DIR/borrowck-slice-pattern-element-loan.rs:110:17 | LL | if let [.., ref second, ref first] = *s { | ---------- immutable borrow occurs here LL | if let [ref mut tail.., _] = *s { //~ERROR | ^^^^^^^^^^^^ mutable borrow occurs here LL | nop(&[first, second]); | ------ borrow later used here error[E0502]: cannot borrow `s[..]` as mutable because it is also borrowed as immutable --> $DIR/borrowck-slice-pattern-element-loan.rs:119:17 | LL | if let [_, _, _, ref s1..] = *s { | ------ immutable borrow occurs here LL | if let [ref mut s2.., _, _, _] = *s { //~ERROR | ^^^^^^^^^^ mutable borrow occurs here LL | nop_subslice(s1); | -- borrow later used here error: aborting due to 11 previous errors For more information about this error, try `rustc --explain E0502`.