Bump rustc version

Author: oli-obk

tests/integrations/basic-fail/tests/actual_tests_bless/rustfix-fail-revisions.a.stderr

@@ -2,7 +2,12 @@ error: expected `,` following `match` arm
  --> tests/actual_tests_bless/rustfix-fail-revisions.rs:6:27
   |
 6 |         0 => String::new()
-  |                           ^ help: missing a comma here to end this `match` arm: `,`
+  |                           ^
+  |
+help: missing a comma here to end this `match` arm
+  |
+6 |         0 => String::new(),
+  |                           +
 
 error: aborting due to 1 previous error
 

tests/integrations/basic-fail/tests/actual_tests_bless/rustfix-fail-revisions.b.stderr

@@ -2,7 +2,12 @@ error: expected `,` following `match` arm
  --> tests/actual_tests_bless/rustfix-fail-revisions.rs:6:27
   |
 6 |         0 => String::new()
-  |                           ^ help: missing a comma here to end this `match` arm: `,`
+  |                           ^
+  |
+help: missing a comma here to end this `match` arm
+  |
+6 |         0 => String::new(),
+  |                           +
 
 error: aborting due to 1 previous error
 

tests/integrations/basic-fail/tests/actual_tests_bless/rustfix-fail.stderr

@@ -2,7 +2,12 @@ error: expected `,` following `match` arm
  --> tests/actual_tests_bless/rustfix-fail.rs:5:27
   |
 5 |         0 => String::new()
-  |                           ^ help: missing a comma here to end this `match` arm: `,`
+  |                           ^
+  |
+help: missing a comma here to end this `match` arm
+  |
+5 |         0 => String::new(),
+  |                           +
 
 error: aborting due to 1 previous error
 

tests/integrations/basic/tests/actual_tests/aux_derive.stderr

@@ -20,12 +20,14 @@ error[E0384]: cannot assign twice to immutable variable `x`
  --> tests/actual_tests/aux_derive.rs:8:5
   |
 7 |     let x = Foo;
-  |         -
-  |         |
-  |         first assignment to `x`
-  |         help: consider making this binding mutable: `mut x`
+  |         - first assignment to `x`
 8 |     x = Foo;
   |     ^^^^^^^ cannot assign twice to immutable variable
+  |
+help: consider making this binding mutable
+  |
+7 |     let mut x = Foo;
+  |         +++
 
 error: aborting due to 1 previous error; 2 warnings emitted