Merge pull request #216 from dtolnay/ensuretest

Update ensure tests to nightly-2022-01-02

Author: dtolnay

tests/test_ensure.rs

@@ -614,7 +614,7 @@ fn test_pat() {
     let test = || Ok(ensure!(if let -1..=1 = 0 { 0 } else { 1 } == 1));
     assert_err(
         test,
-        "Condition failed: `if let -1 ..=1 = 0 { 0 } else { 1 } == 1` (0 vs 1)", // FIXME
+        "Condition failed: `if let -1..=1 = 0 { 0 } else { 1 } == 1` (0 vs 1)",
     );
 
     let test = || Ok(ensure!(if let &0 = &0 { 0 } else { 1 } == 1));