feat: Right align line numbers

compiler/rustc_parse/src/parser/tests.rs

@@ -2114,15 +2114,15 @@ fn foo() {
 error: foo
   --> test.rs:3:6
    |
-3  |      X0 Y0 Z0
+ 3 |      X0 Y0 Z0
    |  _______^
-4  | |    X1 Y1 Z1
+ 4 | |    X1 Y1 Z1
    | | ____^____-
    | ||____|
    |  |    `X` is a good letter
-5  |  | 1
-6  |  | 2
-7  |  | 3
+ 5 |  | 1
+ 6 |  | 2
+ 7 |  | 3
 ...   |
 15 |  |   X2 Y2 Z2
 16 |  |   X3 Y3 Z3
@@ -2133,15 +2133,15 @@ error: foo
 error: foo
    ╭▸ test.rs:3:6
    │
-3  │      X0 Y0 Z0
+ 3 │      X0 Y0 Z0
    │ ┏━━━━━━━┛
-4  │ ┃    X1 Y1 Z1
+ 4 │ ┃    X1 Y1 Z1
    │ ┃┌────╿────┘
    │ ┗│━━━━┥
    │  │    `X` is a good letter
-5  │  │ 1
-6  │  │ 2
-7  │  │ 3
+ 5 │  │ 1
+ 6 │  │ 2
+ 7 │  │ 3
    ‡  │
 15 │  │   X2 Y2 Z2
 16 │  │   X3 Y3 Z3
@@ -2189,15 +2189,15 @@ fn foo() {
 error: foo
   --> test.rs:3:6
    |
-3  |      X0 Y0 Z0
+ 3 |      X0 Y0 Z0
    |  _______^
-4  | |  1
-5  | |  2
-6  | |  3
-7  | |    X1 Y1 Z1
+ 4 | |  1
+ 5 | |  2
+ 6 | |  3
+ 7 | |    X1 Y1 Z1
    | | _________-
-8  | || 4
-9  | || 5
+ 8 | || 4
+ 9 | || 5
 10 | || 6
 11 | ||   X2 Y2 Z2
    | ||__________- `Z` is a good letter too
@@ -2211,15 +2211,15 @@ error: foo
 error: foo
    ╭▸ test.rs:3:6
    │
-3  │      X0 Y0 Z0
+ 3 │      X0 Y0 Z0
    │ ┏━━━━━━━┛
-4  │ ┃  1
-5  │ ┃  2
-6  │ ┃  3
-7  │ ┃    X1 Y1 Z1
+ 4 │ ┃  1
+ 5 │ ┃  2
+ 6 │ ┃  3
+ 7 │ ┃    X1 Y1 Z1
    │ ┃┌─────────┘
-8  │ ┃│ 4
-9  │ ┃│ 5
+ 8 │ ┃│ 4
+ 9 │ ┃│ 5
 10 │ ┃│ 6
 11 │ ┃│   X2 Y2 Z2
    │ ┃└──────────┘ `Z` is a good letter too