Many tests failed at the same time in this package.

• I will close this issue when there are no more failures in this package and
  there is at least one pass.
• No new issues will be filed for this package until this issue is closed.
• If there are already issues for individual test cases, I will close them when
  the corresponding test passes. You can close them earlier, if you prefer, and
  I won't reopen them while this issue is still open.

Here are the tests that failed:

• test_commit (tests.system.test_dbapi: test_commit failed #498)
• test_rollback (tests.system.test_dbapi: test_rollback failed #499)
• test_autocommit_mode_change (tests.system.test_dbapi: test_autocommit_mode_change failed #500)
• test_rollback_on_connection_closing (tests.system.test_dbapi: test_rollback_on_connection_closing failed #501)
• test_results_checksum (tests.system.test_dbapi: test_results_checksum failed #502)
• test_execute_many (tests.system.test_dbapi: test_execute_many failed #503)
• test_DDL_autocommit (tests.system.test_dbapi: test_DDL_autocommit failed #504)
• test_DDL_commit (tests.system.test_dbapi: test_DDL_commit failed #505)
• test_ping
• test_user_agent

commit: dffcf13
buildURL: Build Status, Sponge
status: failed