error[E0502]: cannot borrow `x` as immutable because it is also borrowed as mutable --> $DIR/borrowck-closures-mut-and-imm.rs:17:14 | LL | let c1 = || x = 4; | -- - first borrow occurs due to use of `x` in closure | | | mutable borrow occurs here LL | let c2 = || x * 5; | ^^ - second borrow occurs due to use of `x` in closure | | | immutable borrow occurs here LL | LL | drop(c1); | -- mutable borrow later used here error[E0502]: cannot borrow `x` as immutable because it is also borrowed as mutable --> $DIR/borrowck-closures-mut-and-imm.rs:25:14 | LL | let c1 = || set(&mut x); | -- - first borrow occurs due to use of `x` in closure | | | mutable borrow occurs here LL | let c2 = || get(&x); | ^^ - second borrow occurs due to use of `x` in closure | | | immutable borrow occurs here LL | LL | drop(c1); | -- mutable borrow later used here error[E0502]: cannot borrow `x` as immutable because it is also borrowed as mutable --> $DIR/borrowck-closures-mut-and-imm.rs:33:14 | LL | let c1 = || set(&mut x); | -- - first borrow occurs due to use of `x` in closure | | | mutable borrow occurs here LL | let c2 = || x * 5; | ^^ - second borrow occurs due to use of `x` in closure | | | immutable borrow occurs here LL | LL | drop(c1); | -- mutable borrow later used here error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/borrowck-closures-mut-and-imm.rs:41:5 | LL | let c2 = || x * 5; | -- - borrow occurs due to use in closure | | | borrow of `x` occurs here LL | x = 5; | ^^^^^ assignment to borrowed `x` occurs here LL | LL | drop(c2); | -- borrow later used here error[E0506]: cannot assign to `x` because it is borrowed --> $DIR/borrowck-closures-mut-and-imm.rs:49:5 | LL | let c1 = || get(&x); | -- - borrow occurs due to use in closure | | | borrow of `x` occurs here LL | x = 5; | ^^^^^ assignment to borrowed `x` occurs here LL | LL | drop(c1); | -- borrow later used here error[E0506]: cannot assign to `*x` because it is borrowed --> $DIR/borrowck-closures-mut-and-imm.rs:57:5 | LL | let c1 = || get(&*x); | -- -- borrow occurs due to use in closure | | | borrow of `*x` occurs here LL | *x = 5; | ^^^^^^ assignment to borrowed `*x` occurs here LL | LL | drop(c1); | -- borrow later used here error[E0506]: cannot assign to `*x.f` because it is borrowed --> $DIR/borrowck-closures-mut-and-imm.rs:69:5 | LL | let c1 = || get(&*x.f); | -- ---- borrow occurs due to use in closure | | | borrow of `*x.f` occurs here LL | *x.f = 5; | ^^^^^^^^ assignment to borrowed `*x.f` occurs here LL | LL | drop(c1); | -- borrow later used here error[E0502]: cannot borrow `x` as mutable because it is also borrowed as immutable --> $DIR/borrowck-closures-mut-and-imm.rs:81:14 | LL | let c1 = || get(&*x.f); | -- ---- first borrow occurs due to use of `x` in closure | | | immutable borrow occurs here LL | let c2 = || *x.f = 5; | ^^ ---- second borrow occurs due to use of `x` in closure | | | mutable borrow occurs here LL | LL | drop(c1); | -- immutable borrow later used here error: aborting due to 8 previous errors Some errors have detailed explanations: E0502, E0506. For more information about an error, try `rustc --explain E0502`.