Refactor rustfix tests a bit

To allow us to add more fixture tests modes soon.

Author: killercup

tests/fixtures/.gitignore renamed to tests/everything/.gitignore

@@ -7,7 +7,7 @@
   "level": "error",
   "spans": [
     {
-      "file_name": "./tests/fixtures/E0178.rs",
+      "file_name": "./tests/everything/E0178.rs",
       "byte_start": 60,
       "byte_end": 74,
       "line_start": 6,
@@ -34,7 +34,7 @@
       "level": "help",
       "spans": [
         {
-          "file_name": "./tests/fixtures/E0178.rs",
+          "file_name": "./tests/everything/E0178.rs",
           "byte_start": 60,
           "byte_end": 74,
           "line_start": 6,
@@ -58,7 +58,7 @@
       "rendered": null
     }
   ],
-  "rendered": "error[E0178]: expected a path on the left-hand side of `+`, not `&'a Foo`\n --> ./tests/fixtures/E0178.rs:6:8\n  |\n6 |     w: &'a Foo + Send,\n  |        ^^^^^^^^^^^^^^ help: try adding parentheses: `&'a (Foo + Send)`\n\nIf you want more information on this error, try using \"rustc --explain E0178\"\n"
+  "rendered": "error[E0178]: expected a path on the left-hand side of `+`, not `&'a Foo`\n --> ./tests/everything/E0178.rs:6:8\n  |\n6 |     w: &'a Foo + Send,\n  |        ^^^^^^^^^^^^^^ help: try adding parentheses: `&'a (Foo + Send)`\n\nIf you want more information on this error, try using \"rustc --explain E0178\"\n"
 }
 {
   "message": "aborting due to previous error",

tests/fixtures/E0178.fixed.rs renamed to tests/everything/E0178.fixed.rs

@@ -7,7 +7,7 @@
   "level": "error",
   "spans": [
     {
-      "file_name": "./tests/fixtures/closure-immutable-outer-variable.rs",
+      "file_name": "./tests/everything/closure-immutable-outer-variable.rs",
       "byte_start": 615,
       "byte_end": 624,
       "line_start": 19,
@@ -34,7 +34,7 @@
       "level": "help",
       "spans": [
         {
-          "file_name": "./tests/fixtures/closure-immutable-outer-variable.rs",
+          "file_name": "./tests/everything/closure-immutable-outer-variable.rs",
           "byte_start": 580,
           "byte_end": 581,
           "line_start": 18,
@@ -58,7 +58,7 @@
       "rendered": null
     }
   ],
-  "rendered": "error[E0594]: cannot assign to captured outer variable in an `FnMut` closure\n  --> ./tests/fixtures/closure-immutable-outer-variable.rs:19:26\n   |\n18 |     let y = true;\n   |         - help: consider making `y` mutable: `mut y`\n19 |     foo(Box::new(move || y = false) as Box<_>); //~ ERROR cannot assign to captured outer variable\n   |                          ^^^^^^^^^\n\nIf you want more information on this error, try using \"rustc --explain E0594\"\n"
+  "rendered": "error[E0594]: cannot assign to captured outer variable in an `FnMut` closure\n  --> ./tests/everything/closure-immutable-outer-variable.rs:19:26\n   |\n18 |     let y = true;\n   |         - help: consider making `y` mutable: `mut y`\n19 |     foo(Box::new(move || y = false) as Box<_>); //~ ERROR cannot assign to captured outer variable\n   |                          ^^^^^^^^^\n\nIf you want more information on this error, try using \"rustc --explain E0594\"\n"
 }
 {
   "message": "aborting due to previous error",

tests/fixtures/E0178.json renamed to tests/everything/E0178.json

@@ -4,7 +4,7 @@
   "level": "error",
   "spans": [
     {
-      "file_name": "./tests/fixtures/lt-generic-comp.rs",
+      "file_name": "./tests/everything/lt-generic-comp.rs",
       "byte_start": 49,
       "byte_end": 50,
       "line_start": 4,
@@ -24,7 +24,7 @@
       "expansion": null
     },
     {
-      "file_name": "./tests/fixtures/lt-generic-comp.rs",
+      "file_name": "./tests/everything/lt-generic-comp.rs",
       "byte_start": 47,
       "byte_end": 48,
       "line_start": 4,
@@ -51,7 +51,7 @@
       "level": "help",
       "spans": [
         {
-          "file_name": "./tests/fixtures/lt-generic-comp.rs",
+          "file_name": "./tests/everything/lt-generic-comp.rs",
           "byte_start": 38,
           "byte_end": 46,
           "line_start": 4,
@@ -75,7 +75,7 @@
       "rendered": null
     }
   ],
-  "rendered": "error: `<` is interpreted as a start of generic arguments for `u32`, not a comparison\n --> ./tests/fixtures/lt-generic-comp.rs:4:17\n  |\n4 |     if x as u32 < 4 {\n  |        -------- ^ - interpreted as generic arguments\n  |        |        |\n  |        |        not interpreted as comparison\n  |        help: try comparing the cast value: `(x as u32)`\n\n"
+  "rendered": "error: `<` is interpreted as a start of generic arguments for `u32`, not a comparison\n --> ./tests/everything/lt-generic-comp.rs:4:17\n  |\n4 |     if x as u32 < 4 {\n  |        -------- ^ - interpreted as generic arguments\n  |        |        |\n  |        |        not interpreted as comparison\n  |        help: try comparing the cast value: `(x as u32)`\n\n"
 }
 {
   "message": "aborting due to previous error",