test: relax assertions of panic message (again)

Author: weihanglo

tests/testsuite/bench.rs

@@ -314,9 +314,9 @@ fn cargo_bench_failing_test() {
 [RUNNING] [..] (target/release/deps/foo-[..][EXE])",
         )
         .with_stdout_contains("[..]thread '[..]' panicked at[..]")
-        .with_stdout_contains("[..]assertion failed[..]")
-        .with_stdout_contains("[..]left: `\"hello\"`[..]")
-        .with_stdout_contains("[..]right: `\"nope\"`[..]")
+        .with_stdout_contains("[..]assertion [..]failed[..]")
+        .with_stdout_contains("[..]left: [..]\"hello\"[..]")
+        .with_stdout_contains("[..]right: [..]\"nope\"[..]")
         .with_stdout_contains("[..]src/main.rs:15[..]")
         .with_status(101)
         .run();

tests/testsuite/test.rs

@@ -389,10 +389,10 @@ failures:
 ---- test_hello stdout ----
 [..]thread '[..]' panicked at [..]",
         )
-        .with_stdout_contains("[..]assertion failed[..]")
-        .with_stdout_contains("[..]`(left == right)`[..]")
-        .with_stdout_contains("[..]left: `\"hello\"`,[..]")
-        .with_stdout_contains("[..]right: `\"nope\"`[..]")
+        .with_stdout_contains("[..]assertion [..]failed[..]")
+        .with_stdout_contains("[..]left == right[..]")
+        .with_stdout_contains("[..]left: [..]\"hello\"[..]")
+        .with_stdout_contains("[..]right: [..]\"nope\"[..]")
         .with_stdout_contains("[..]src/main.rs:12[..]")
         .with_stdout_contains(
             "\