Merge pull request #459 from ehuss/tests-1.53

Update tests for 1.53.

Author: ehuss

tests/error-tests/examples/no_main.rs

@@ -4,7 +4,8 @@
 //^^^^^^^^^^^^^^^^ERR(>=1.39.0-beta,rust_syntax_checking_include_tests=False) `main` function not found
 //^^^^^^^^^^^^^^^^ERR(>=1.39.0-beta,rust_syntax_checking_include_tests=False) the main function must be defined
 //^^^^^^^^^^^^^^^^NOTE(>=1.39.0-beta,rust_syntax_checking_include_tests=False) you have one or more functions named `main`
-//^^^^^^^^^^^^^^^^HELP(>=1.39.0-beta,rust_syntax_checking_include_tests=False) either move the `main`
+//^^^^^^^^^^^^^^^^HELP(>=1.39.0-beta,<1.53.0-beta,rust_syntax_checking_include_tests=False) either move the `main`
+//^^^^^^^^^^^^^^^^HELP(>=1.53.0-beta,rust_syntax_checking_include_tests=False) consider moving the `main`
 //^^^^^^^^^^^^^^^^MSG(>=1.39.0-beta,rust_syntax_checking_include_tests=False) See Also: no_main_mod.rs:6
 // When --profile=test is used with `cargo check`, this error will not happen
 // due to the synthesized main created by the test harness.