error[E0594]: cannot assign to `*x`, which is behind a `&` reference --> $DIR/mutability-errors.rs:9:5 | LL | *x = (1,); | ^^^^^^^^^ `x` is a `&` reference, so the data it refers to cannot be written | help: consider changing this to be a mutable reference | LL | fn named_ref(x: &mut (i32,)) { | ~~~~~~~~~~~ error[E0594]: cannot assign to `x.0`, which is behind a `&` reference --> $DIR/mutability-errors.rs:10:5 | LL | x.0 = 1; | ^^^^^^^ `x` is a `&` reference, so the data it refers to cannot be written | help: consider changing this to be a mutable reference | LL | fn named_ref(x: &mut (i32,)) { | ~~~~~~~~~~~ error[E0596]: cannot borrow `*x` as mutable, as it is behind a `&` reference --> $DIR/mutability-errors.rs:11:5 | LL | &mut *x; | ^^^^^^^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable | help: consider changing this to be a mutable reference | LL | fn named_ref(x: &mut (i32,)) { | ~~~~~~~~~~~ error[E0596]: cannot borrow `x.0` as mutable, as it is behind a `&` reference --> $DIR/mutability-errors.rs:12:5 | LL | &mut x.0; | ^^^^^^^^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable | help: consider changing this to be a mutable reference | LL | fn named_ref(x: &mut (i32,)) { | ~~~~~~~~~~~ error[E0594]: cannot assign to data in a `&` reference --> $DIR/mutability-errors.rs:16:5 | LL | *f() = (1,); | ^^^^^^^^^^^ cannot assign error[E0594]: cannot assign to data in a `&` reference --> $DIR/mutability-errors.rs:17:5 | LL | f().0 = 1; | ^^^^^^^^^ cannot assign error[E0596]: cannot borrow data in a `&` reference as mutable --> $DIR/mutability-errors.rs:18:5 | LL | &mut *f(); | ^^^^^^^^^ cannot borrow as mutable error[E0596]: cannot borrow data in a `&` reference as mutable --> $DIR/mutability-errors.rs:19:5 | LL | &mut f().0; | ^^^^^^^^^^ cannot borrow as mutable error[E0594]: cannot assign to `*x`, which is behind a `*const` pointer --> $DIR/mutability-errors.rs:23:5 | LL | *x = (1,); | ^^^^^^^^^ `x` is a `*const` pointer, so the data it refers to cannot be written | help: consider changing this to be a mutable pointer | LL | unsafe fn named_ptr(x: *mut (i32,)) { | ~~~~~~~~~~~ error[E0594]: cannot assign to `x.0`, which is behind a `*const` pointer --> $DIR/mutability-errors.rs:24:5 | LL | (*x).0 = 1; | ^^^^^^^^^^ `x` is a `*const` pointer, so the data it refers to cannot be written | help: consider changing this to be a mutable pointer | LL | unsafe fn named_ptr(x: *mut (i32,)) { | ~~~~~~~~~~~ error[E0596]: cannot borrow `*x` as mutable, as it is behind a `*const` pointer --> $DIR/mutability-errors.rs:25:5 | LL | &mut *x; | ^^^^^^^ `x` is a `*const` pointer, so the data it refers to cannot be borrowed as mutable | help: consider changing this to be a mutable pointer | LL | unsafe fn named_ptr(x: *mut (i32,)) { | ~~~~~~~~~~~ error[E0596]: cannot borrow `x.0` as mutable, as it is behind a `*const` pointer --> $DIR/mutability-errors.rs:26:5 | LL | &mut (*x).0; | ^^^^^^^^^^^ `x` is a `*const` pointer, so the data it refers to cannot be borrowed as mutable | help: consider changing this to be a mutable pointer | LL | unsafe fn named_ptr(x: *mut (i32,)) { | ~~~~~~~~~~~ error[E0594]: cannot assign to data in a `*const` pointer --> $DIR/mutability-errors.rs:30:5 | LL | *f() = (1,); | ^^^^^^^^^^^ cannot assign error[E0594]: cannot assign to data in a `*const` pointer --> $DIR/mutability-errors.rs:31:5 | LL | (*f()).0 = 1; | ^^^^^^^^^^^^ cannot assign error[E0596]: cannot borrow data in a `*const` pointer as mutable --> $DIR/mutability-errors.rs:32:5 | LL | &mut *f(); | ^^^^^^^^^ cannot borrow as mutable error[E0596]: cannot borrow data in a `*const` pointer as mutable --> $DIR/mutability-errors.rs:33:5 | LL | &mut (*f()).0; | ^^^^^^^^^^^^^ cannot borrow as mutable error[E0594]: cannot assign to `x`, as it is a captured variable in a `Fn` closure --> $DIR/mutability-errors.rs:40:9 | LL | fn fn_ref(f: F) -> F { f } | - change this to accept `FnMut` instead of `Fn` ... LL | fn_ref(|| { | ------ -- in this closure | | | expects `Fn` instead of `FnMut` LL | x = (1,); | ^^^^^^^^ cannot assign error[E0594]: cannot assign to `x.0`, as `Fn` closures cannot mutate their captured variables --> $DIR/mutability-errors.rs:41:9 | LL | fn fn_ref(f: F) -> F { f } | - change this to accept `FnMut` instead of `Fn` ... LL | fn_ref(|| { | ------ -- in this closure | | | expects `Fn` instead of `FnMut` LL | x = (1,); LL | x.0 = 1; | ^^^^^^^ cannot assign error[E0596]: cannot borrow `x` as mutable, as it is a captured variable in a `Fn` closure --> $DIR/mutability-errors.rs:42:9 | LL | fn fn_ref(f: F) -> F { f } | - change this to accept `FnMut` instead of `Fn` ... LL | fn_ref(|| { | ------ -- in this closure | | | expects `Fn` instead of `FnMut` ... LL | &mut x; | ^^^^^^ cannot borrow as mutable error[E0596]: cannot borrow `x.0` as mutable, as `Fn` closures cannot mutate their captured variables --> $DIR/mutability-errors.rs:43:9 | LL | fn fn_ref(f: F) -> F { f } | - change this to accept `FnMut` instead of `Fn` ... LL | fn_ref(|| { | ------ -- in this closure | | | expects `Fn` instead of `FnMut` ... LL | &mut x.0; | ^^^^^^^^ cannot borrow as mutable error[E0594]: cannot assign to `x`, as it is a captured variable in a `Fn` closure --> $DIR/mutability-errors.rs:46:9 | LL | fn fn_ref(f: F) -> F { f } | - change this to accept `FnMut` instead of `Fn` ... LL | fn_ref(move || { | ------ ------- in this closure | | | expects `Fn` instead of `FnMut` LL | x = (1,); | ^^^^^^^^ cannot assign error[E0594]: cannot assign to `x.0`, as `Fn` closures cannot mutate their captured variables --> $DIR/mutability-errors.rs:47:9 | LL | fn fn_ref(f: F) -> F { f } | - change this to accept `FnMut` instead of `Fn` ... LL | fn_ref(move || { | ------ ------- in this closure | | | expects `Fn` instead of `FnMut` LL | x = (1,); LL | x.0 = 1; | ^^^^^^^ cannot assign error[E0596]: cannot borrow `x` as mutable, as it is a captured variable in a `Fn` closure --> $DIR/mutability-errors.rs:48:9 | LL | fn fn_ref(f: F) -> F { f } | - change this to accept `FnMut` instead of `Fn` ... LL | fn_ref(move || { | ------ ------- in this closure | | | expects `Fn` instead of `FnMut` ... LL | &mut x; | ^^^^^^ cannot borrow as mutable error[E0596]: cannot borrow `x.0` as mutable, as `Fn` closures cannot mutate their captured variables --> $DIR/mutability-errors.rs:49:9 | LL | fn fn_ref(f: F) -> F { f } | - change this to accept `FnMut` instead of `Fn` ... LL | fn_ref(move || { | ------ ------- in this closure | | | expects `Fn` instead of `FnMut` ... LL | &mut x.0; | ^^^^^^^^ cannot borrow as mutable error[E0596]: cannot borrow `x` as mutable, as it is not declared as mutable --> $DIR/mutability-errors.rs:53:14 | LL | fn imm_local(x: (i32,)) { | ^ not mutable LL | &mut x; | ------ cannot borrow as mutable LL | &mut x.0; | -------- cannot borrow as mutable | help: consider changing this to be mutable | LL | fn imm_local(mut x: (i32,)) { | +++ error[E0594]: cannot assign to `x`, as it is not declared as mutable --> $DIR/mutability-errors.rs:60:9 | LL | fn imm_capture(x: (i32,)) { | - help: consider changing this to be mutable: `mut x` LL | || { LL | x = (1,); | ^^^^^^^^ cannot assign error[E0594]: cannot assign to `x.0`, as `x` is not declared as mutable --> $DIR/mutability-errors.rs:61:9 | LL | fn imm_capture(x: (i32,)) { | - help: consider changing this to be mutable: `mut x` ... LL | x.0 = 1; | ^^^^^^^ cannot assign error[E0596]: cannot borrow `x` as mutable, as it is not declared as mutable --> $DIR/mutability-errors.rs:62:9 | LL | fn imm_capture(x: (i32,)) { | - help: consider changing this to be mutable: `mut x` ... LL | &mut x; | ^^^^^^ cannot borrow as mutable error[E0596]: cannot borrow `x.0` as mutable, as `x` is not declared as mutable --> $DIR/mutability-errors.rs:63:9 | LL | fn imm_capture(x: (i32,)) { | - help: consider changing this to be mutable: `mut x` ... LL | &mut x.0; | ^^^^^^^^ cannot borrow as mutable error[E0594]: cannot assign to `x`, as it is not declared as mutable --> $DIR/mutability-errors.rs:66:9 | LL | fn imm_capture(x: (i32,)) { | - help: consider changing this to be mutable: `mut x` ... LL | x = (1,); | ^^^^^^^^ cannot assign error[E0594]: cannot assign to `x.0`, as `x` is not declared as mutable --> $DIR/mutability-errors.rs:67:9 | LL | fn imm_capture(x: (i32,)) { | - help: consider changing this to be mutable: `mut x` ... LL | x.0 = 1; | ^^^^^^^ cannot assign error[E0596]: cannot borrow `x` as mutable, as it is not declared as mutable --> $DIR/mutability-errors.rs:68:9 | LL | fn imm_capture(x: (i32,)) { | - help: consider changing this to be mutable: `mut x` ... LL | &mut x; | ^^^^^^ cannot borrow as mutable error[E0596]: cannot borrow `x.0` as mutable, as `x` is not declared as mutable --> $DIR/mutability-errors.rs:69:9 | LL | fn imm_capture(x: (i32,)) { | - help: consider changing this to be mutable: `mut x` ... LL | &mut x.0; | ^^^^^^^^ cannot borrow as mutable error[E0594]: cannot assign to immutable static item `X` --> $DIR/mutability-errors.rs:76:5 | LL | X = (1,); | ^^^^^^^^ cannot assign error[E0594]: cannot assign to `X.0`, as `X` is an immutable static item --> $DIR/mutability-errors.rs:77:5 | LL | X.0 = 1; | ^^^^^^^ cannot assign error[E0596]: cannot borrow immutable static item `X` as mutable --> $DIR/mutability-errors.rs:78:5 | LL | &mut X; | ^^^^^^ cannot borrow as mutable error[E0596]: cannot borrow `X.0` as mutable, as `X` is an immutable static item --> $DIR/mutability-errors.rs:79:5 | LL | &mut X.0; | ^^^^^^^^ cannot borrow as mutable error: aborting due to 37 previous errors Some errors have detailed explanations: E0594, E0596. For more information about an error, try `rustc --explain E0594`.