move tests to borrowck directory, remove feature(nll)

now compare-mode can show us the differences

src/test/ui/borrowck/assign_mutable_fields.nll.stderr

@@ -1,5 +1,5 @@
 error[E0381]: use of possibly uninitialized variable: `x`
-  --> $DIR/assign_mutable_fields.rs:31:10
+  --> $DIR/assign_mutable_fields.rs:29:10
    |
 LL |     drop(x); //~ ERROR
    |          ^ use of possibly uninitialized `x`

src/test/ui/borrowck/assign_mutable_fields.rs

@@ -14,14 +14,12 @@
 //
 // FIXME(#21232)
 
-#![feature(nll)]
-
 fn assign_both_fields_and_use() {
     let mut x: (u32, u32);
     x.0 = 1;
     x.1 = 22;
-    drop(x.0);
+    drop(x.0); //~ ERROR
-    drop(x.1);
+    drop(x.1); //~ ERROR
 }
 
 fn assign_both_fields_the_use_var() {

src/test/ui/borrowck/assign_mutable_fields.stderr

@@ -0,0 +1,21 @@
+error[E0381]: use of possibly uninitialized variable: `x.0`
+  --> $DIR/assign_mutable_fields.rs:21:10
+   |
+LL |     drop(x.0); //~ ERROR
+   |          ^^^ use of possibly uninitialized `x.0`
+
+error[E0381]: use of possibly uninitialized variable: `x.1`
+  --> $DIR/assign_mutable_fields.rs:22:10
+   |
+LL |     drop(x.1); //~ ERROR
+   |          ^^^ use of possibly uninitialized `x.1`
+
+error[E0381]: use of possibly uninitialized variable: `x`
+  --> $DIR/assign_mutable_fields.rs:29:10
+   |
+LL |     drop(x); //~ ERROR
+   |          ^ use of possibly uninitialized `x`
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0381`.

src/test/ui/borrowck/reassignment_immutable_fields.nll.stderr

@@ -1,5 +1,5 @@
 error[E0594]: cannot assign to `x.0`, as `x` is not declared as mutable
-  --> $DIR/reassignment_immutable_fields.rs:19:5
+  --> $DIR/reassignment_immutable_fields.rs:17:5
    |
 LL |     let x: (u32, u32);
    |         - help: consider changing this to be mutable: `mut x`
@@ -7,7 +7,7 @@ LL |     x.0 = 1; //~ ERROR
    |     ^^^^^^^ cannot assign
 
 error[E0594]: cannot assign to `x.1`, as `x` is not declared as mutable
-  --> $DIR/reassignment_immutable_fields.rs:20:5
+  --> $DIR/reassignment_immutable_fields.rs:18:5
    |
 LL |     let x: (u32, u32);
    |         - help: consider changing this to be mutable: `mut x`
@@ -16,7 +16,7 @@ LL |     x.1 = 22; //~ ERROR
    |     ^^^^^^^^ cannot assign
 
 error[E0594]: cannot assign to `x.0`, as `x` is not declared as mutable
-  --> $DIR/reassignment_immutable_fields.rs:27:5
+  --> $DIR/reassignment_immutable_fields.rs:25:5
    |
 LL |     let x: (u32, u32);
    |         - help: consider changing this to be mutable: `mut x`
@@ -24,7 +24,7 @@ LL |     x.0 = 1; //~ ERROR
    |     ^^^^^^^ cannot assign
 
 error[E0594]: cannot assign to `x.1`, as `x` is not declared as mutable
-  --> $DIR/reassignment_immutable_fields.rs:28:5
+  --> $DIR/reassignment_immutable_fields.rs:26:5
    |
 LL |     let x: (u32, u32);
    |         - help: consider changing this to be mutable: `mut x`
@@ -33,7 +33,7 @@ LL |     x.1 = 22; //~ ERROR
    |     ^^^^^^^^ cannot assign
 
 error[E0381]: use of possibly uninitialized variable: `x`
-  --> $DIR/reassignment_immutable_fields.rs:29:10
+  --> $DIR/reassignment_immutable_fields.rs:27:10
    |
 LL |     drop(x); //~ ERROR
    |          ^ use of possibly uninitialized `x`

src/test/ui/borrowck/reassignment_immutable_fields.rs

@@ -12,14 +12,12 @@
 //
 // FIXME(#21232)
 
-#![feature(nll)]
-
 fn assign_both_fields_and_use() {
     let x: (u32, u32);
     x.0 = 1; //~ ERROR
     x.1 = 22; //~ ERROR
-    drop(x.0);
+    drop(x.0); //~ ERROR
-    drop(x.1);
+    drop(x.1); //~ ERROR
 }
 
 fn assign_both_fields_the_use_var() {

src/test/ui/borrowck/reassignment_immutable_fields.stderr

@@ -0,0 +1,56 @@
+error[E0594]: cannot assign to field `x.0` of immutable binding
+  --> $DIR/reassignment_immutable_fields.rs:17:5
+   |
+LL |     let x: (u32, u32);
+   |         - consider changing this to `mut x`
+LL |     x.0 = 1; //~ ERROR
+   |     ^^^^^^^ cannot mutably borrow field of immutable binding
+
+error[E0594]: cannot assign to field `x.1` of immutable binding
+  --> $DIR/reassignment_immutable_fields.rs:18:5
+   |
+LL |     let x: (u32, u32);
+   |         - consider changing this to `mut x`
+LL |     x.0 = 1; //~ ERROR
+LL |     x.1 = 22; //~ ERROR
+   |     ^^^^^^^^ cannot mutably borrow field of immutable binding
+
+error[E0381]: use of possibly uninitialized variable: `x.0`
+  --> $DIR/reassignment_immutable_fields.rs:19:10
+   |
+LL |     drop(x.0); //~ ERROR
+   |          ^^^ use of possibly uninitialized `x.0`
+
+error[E0381]: use of possibly uninitialized variable: `x.1`
+  --> $DIR/reassignment_immutable_fields.rs:20:10
+   |
+LL |     drop(x.1); //~ ERROR
+   |          ^^^ use of possibly uninitialized `x.1`
+
+error[E0594]: cannot assign to field `x.0` of immutable binding
+  --> $DIR/reassignment_immutable_fields.rs:25:5
+   |
+LL |     let x: (u32, u32);
+   |         - consider changing this to `mut x`
+LL |     x.0 = 1; //~ ERROR
+   |     ^^^^^^^ cannot mutably borrow field of immutable binding
+
+error[E0594]: cannot assign to field `x.1` of immutable binding
+  --> $DIR/reassignment_immutable_fields.rs:26:5
+   |
+LL |     let x: (u32, u32);
+   |         - consider changing this to `mut x`
+LL |     x.0 = 1; //~ ERROR
+LL |     x.1 = 22; //~ ERROR
+   |     ^^^^^^^^ cannot mutably borrow field of immutable binding
+
+error[E0381]: use of possibly uninitialized variable: `x`
+  --> $DIR/reassignment_immutable_fields.rs:27:10
+   |
+LL |     drop(x); //~ ERROR
+   |          ^ use of possibly uninitialized `x`
+
+error: aborting due to 7 previous errors
+
+Some errors occurred: E0381, E0594.
+For more information about an error, try `rustc --explain E0381`.

src/test/ui/borrowck/reassignment_immutable_fields_overlapping.nll.stderr

@@ -1,5 +1,5 @@
 error[E0594]: cannot assign to `x.a`, as `x` is not declared as mutable
-  --> $DIR/reassignment_immutable_fields_overlapping.rs:24:5
+  --> $DIR/reassignment_immutable_fields_overlapping.rs:22:5
    |
 LL |     let x: Foo;
    |         - help: consider changing this to be mutable: `mut x`
@@ -7,7 +7,7 @@ LL |     x.a = 1;  //~ ERROR
    |     ^^^^^^^ cannot assign
 
 error[E0594]: cannot assign to `x.b`, as `x` is not declared as mutable
-  --> $DIR/reassignment_immutable_fields_overlapping.rs:25:5
+  --> $DIR/reassignment_immutable_fields_overlapping.rs:23:5
    |
 LL |     let x: Foo;
    |         - help: consider changing this to be mutable: `mut x`

src/test/ui/borrowck/reassignment_immutable_fields_overlapping.rs

@@ -12,8 +12,6 @@
 // overlapping, so since `x` is not `mut` we should not permit
 // reassignment.
 
-#![feature(nll)]
-
 union Foo {
     a: u32,
     b: u32,

src/test/ui/borrowck/reassignment_immutable_fields_overlapping.stderr

@@ -0,0 +1,20 @@
+error[E0594]: cannot assign to field `x.a` of immutable binding
+  --> $DIR/reassignment_immutable_fields_overlapping.rs:22:5
+   |
+LL |     let x: Foo;
+   |         - consider changing this to `mut x`
+LL |     x.a = 1;  //~ ERROR
+   |     ^^^^^^^ cannot mutably borrow field of immutable binding
+
+error[E0594]: cannot assign to field `x.b` of immutable binding
+  --> $DIR/reassignment_immutable_fields_overlapping.rs:23:5
+   |
+LL |     let x: Foo;
+   |         - consider changing this to `mut x`
+LL |     x.a = 1;  //~ ERROR
+LL |     x.b = 22; //~ ERROR
+   |     ^^^^^^^^ cannot mutably borrow field of immutable binding
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0594`.

src/test/ui/borrowck/reassignment_immutable_fields_twice.nll.stderr

@@ -1,5 +1,5 @@
 error[E0594]: cannot assign to `x.0`, as `x` is not declared as mutable
-  --> $DIR/reassignment_immutable_fields_twice.rs:19:5
+  --> $DIR/reassignment_immutable_fields_twice.rs:17:5
    |
 LL |     let x: (u32, u32);
    |         - help: consider changing this to be mutable: `mut x`
@@ -8,7 +8,7 @@ LL |     x.0 = 1; //~ ERROR
    |     ^^^^^^^ cannot assign
 
 error[E0594]: cannot assign to `x.0`, as `x` is not declared as mutable
-  --> $DIR/reassignment_immutable_fields_twice.rs:24:5
+  --> $DIR/reassignment_immutable_fields_twice.rs:22:5
    |
 LL |     let x: (u32, u32);
    |         - help: consider changing this to be mutable: `mut x`
@@ -16,7 +16,7 @@ LL |     x.0 = 1; //~ ERROR
    |     ^^^^^^^ cannot assign
 
 error[E0594]: cannot assign to `x.0`, as `x` is not declared as mutable
-  --> $DIR/reassignment_immutable_fields_twice.rs:25:5
+  --> $DIR/reassignment_immutable_fields_twice.rs:23:5
    |
 LL |     let x: (u32, u32);
    |         - help: consider changing this to be mutable: `mut x`
@@ -25,7 +25,7 @@ LL |     x.0 = 22; //~ ERROR
    |     ^^^^^^^^ cannot assign
 
 error[E0594]: cannot assign to `x.1`, as `x` is not declared as mutable
-  --> $DIR/reassignment_immutable_fields_twice.rs:26:5
+  --> $DIR/reassignment_immutable_fields_twice.rs:24:5
    |
 LL |     let x: (u32, u32);
    |         - help: consider changing this to be mutable: `mut x`

src/test/ui/borrowck/reassignment_immutable_fields_twice.rs

@@ -11,8 +11,6 @@
 // This should never be allowed -- since `x` is not `mut`, so `x.0`
 // cannot be assigned twice.
 
-#![feature(nll)]
-
 fn var_then_field() {
     let x: (u32, u32);
     x = (22, 44);

src/test/ui/borrowck/reassignment_immutable_fields_twice.stderr

@@ -0,0 +1,38 @@
+error[E0594]: cannot assign to field `x.0` of immutable binding
+  --> $DIR/reassignment_immutable_fields_twice.rs:17:5
+   |
+LL |     let x: (u32, u32);
+   |         - consider changing this to `mut x`
+LL |     x = (22, 44);
+LL |     x.0 = 1; //~ ERROR
+   |     ^^^^^^^ cannot mutably borrow field of immutable binding
+
+error[E0594]: cannot assign to field `x.0` of immutable binding
+  --> $DIR/reassignment_immutable_fields_twice.rs:22:5
+   |
+LL |     let x: (u32, u32);
+   |         - consider changing this to `mut x`
+LL |     x.0 = 1; //~ ERROR
+   |     ^^^^^^^ cannot mutably borrow field of immutable binding
+
+error[E0594]: cannot assign to field `x.0` of immutable binding
+  --> $DIR/reassignment_immutable_fields_twice.rs:23:5
+   |
+LL |     let x: (u32, u32);
+   |         - consider changing this to `mut x`
+LL |     x.0 = 1; //~ ERROR
+LL |     x.0 = 22; //~ ERROR
+   |     ^^^^^^^^ cannot mutably borrow field of immutable binding
+
+error[E0594]: cannot assign to field `x.1` of immutable binding
+  --> $DIR/reassignment_immutable_fields_twice.rs:24:5
+   |
+LL |     let x: (u32, u32);
+   |         - consider changing this to `mut x`
+...
+LL |     x.1 = 44; //~ ERROR
+   |     ^^^^^^^^ cannot mutably borrow field of immutable binding
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0594`.

src/test/ui/immut-function-arguments.ast.nll.stderr

@@ -1,19 +1,19 @@
-error[E0384]: cannot assign to immutable argument `y`
+error[E0594]: cannot assign to `*y`, as `y` is not declared as mutable
   --> $DIR/immut-function-arguments.rs:15:5
    |
 LL | fn f(y: Box<isize>) {
-   |      - consider changing this to `mut y`
+   |      - help: consider changing this to be mutable: `mut y`
 LL |     *y = 5; //[ast]~ ERROR cannot assign
-   |     ^^^^^^ cannot assign to immutable argument
+   |     ^^^^^^ cannot assign
 
-error[E0384]: cannot assign to immutable argument `q`
+error[E0594]: cannot assign to `*q`, as `q` is not declared as mutable
   --> $DIR/immut-function-arguments.rs:20:35
    |
 LL |     let _frob = |q: Box<isize>| { *q = 2; }; //[ast]~ ERROR cannot assign
-   |                  -                ^^^^^^ cannot assign to immutable argument
+   |                  -                ^^^^^^ cannot assign
    |                  |
-   |                  consider changing this to `mut q`
+   |                  help: consider changing this to be mutable: `mut q`
 
 error: aborting due to 2 previous errors
 
-For more information about this error, try `rustc --explain E0384`.
+For more information about this error, try `rustc --explain E0594`.

src/test/ui/immut-function-arguments.mir.stderr

@@ -1,19 +1,19 @@
-error[E0384]: cannot assign to immutable argument `y`
+error[E0594]: cannot assign to `*y`, as `y` is not declared as mutable
   --> $DIR/immut-function-arguments.rs:15:5
    |
 LL | fn f(y: Box<isize>) {
-   |      - consider changing this to `mut y`
+   |      - help: consider changing this to be mutable: `mut y`
 LL |     *y = 5; //[ast]~ ERROR cannot assign
-   |     ^^^^^^ cannot assign to immutable argument
+   |     ^^^^^^ cannot assign
 
-error[E0384]: cannot assign to immutable argument `q`
+error[E0594]: cannot assign to `*q`, as `q` is not declared as mutable
   --> $DIR/immut-function-arguments.rs:20:35
    |
 LL |     let _frob = |q: Box<isize>| { *q = 2; }; //[ast]~ ERROR cannot assign
-   |                  -                ^^^^^^ cannot assign to immutable argument
+   |                  -                ^^^^^^ cannot assign
    |                  |
-   |                  consider changing this to `mut q`
+   |                  help: consider changing this to be mutable: `mut q`
 
 error: aborting due to 2 previous errors
 
-For more information about this error, try `rustc --explain E0384`.
+For more information about this error, try `rustc --explain E0594`.

src/test/ui/mut/mutable-class-fields.ast.nll.stderr

@@ -1,14 +1,11 @@
-error[E0384]: cannot assign twice to immutable variable `nyan`
+error[E0594]: cannot assign to `nyan.how_hungry`, as `nyan` is not declared as mutable
   --> $DIR/mutable-class-fields.rs:28:3
    |
 LL |   let nyan : cat = cat(52, 99);
-   |       ----
+   |       ---- help: consider changing this to be mutable: `mut nyan`
-   |       |
-   |       first assignment to `nyan`
-   |       consider changing this to `mut nyan`
 LL |   nyan.how_hungry = 0; //[ast]~ ERROR cannot assign
-   |   ^^^^^^^^^^^^^^^^^^^ cannot assign twice to immutable variable
+   |   ^^^^^^^^^^^^^^^^^^^ cannot assign
 
 error: aborting due to previous error
 
-For more information about this error, try `rustc --explain E0384`.
+For more information about this error, try `rustc --explain E0594`.

src/test/ui/mut/mutable-class-fields.mir.stderr

@@ -1,14 +1,11 @@
-error[E0384]: cannot assign twice to immutable variable `nyan`
+error[E0594]: cannot assign to `nyan.how_hungry`, as `nyan` is not declared as mutable
   --> $DIR/mutable-class-fields.rs:28:3
    |
 LL |   let nyan : cat = cat(52, 99);
-   |       ----
+   |       ---- help: consider changing this to be mutable: `mut nyan`
-   |       |
-   |       first assignment to `nyan`
-   |       consider changing this to `mut nyan`
 LL |   nyan.how_hungry = 0; //[ast]~ ERROR cannot assign
-   |   ^^^^^^^^^^^^^^^^^^^ cannot assign twice to immutable variable
+   |   ^^^^^^^^^^^^^^^^^^^ cannot assign
 
 error: aborting due to previous error
 
-For more information about this error, try `rustc --explain E0384`.
+For more information about this error, try `rustc --explain E0594`.