Bump stable compiler

Author: oli-obk

tests/integrations/basic-fail/Cargo.stdout

@@ -358,18 +358,26 @@ error: `mismatched types` not found in diagnostics on line 8
   |
 
 error: there were 1 unmatched diagnostics
- --> tests/actual_tests/rustc_ice.rs:8:5
+ --> tests/actual_tests/rustc_ice.rs:8:9
   |
 8 |     add("42", 3);
-  |     ^^^^^^^^^^^^ Ice: no errors reported for args
+  |         ^^^^ Ice: mismatched types
   |
 
 full stderr:
-error: internal compiler error: no errors reported for args
- --> tests/actual_tests/rustc_ice.rs:8:5
+error: internal compiler error[E0308]: mismatched types
+ --> tests/actual_tests/rustc_ice.rs:8:9
   |
 8 |     add("42", 3);
-  |     ^^^^^^^^^^^^
+  |     --- ^^^^ expected `usize`, found `&str`
+  |     |
+  |     arguments to this function are incorrect
+  |
+note: function defined here
+ --> $DIR/tests/integrations/basic-fail/src/lib.rs:LL:CC
+  |
+1 | pub fn add(left: usize, right: usize) -> usize {
+  |        ^^^
 
 thread 'rustc' panicked at compiler/rustc_errors/src/lib.rs:
 aborting due to `-Z treat-err-as-bug=1`

tests/integrations/basic-fail/tests/actual_tests/rustc_ice.stderr

@@ -1,7 +1,15 @@
-error: internal compiler error: no errors reported for args
- --> tests/actual_tests/rustc_ice.rs:8:5
+error: internal compiler error[E0308]: mismatched types
+ --> tests/actual_tests/rustc_ice.rs:8:9
   |
 8 |     add("42", 3);
-  |     ^^^^^^^^^^^^
+  |     --- ^^^^ expected `usize`, found `&str`
+  |     |
+  |     arguments to this function are incorrect
+  |
+note: function defined here
+ --> $DIR/tests/integrations/basic-fail/src/lib.rs:1:8
+  |
+1 | pub fn add(left: usize, right: usize) -> usize {
+  |        ^^^
 
 thread 'rustc' panicked