This line of code in https://openqa.opensuse.org/tests/984585/modules/ntp/steps/1/src

validate_script_output 'date', sub { not m/2018/ };

... creates the following error text when not matching:

wait_serial expected: Tue Jul 3 10:45:58 EDT 2018¶

Result:¶

Tue Jul 3 10:45:58 EDT 2018

The error msg suggests that "Tue Jul 3 10:45:58 EDT 2018" was the expected text even though the actual regex was not m/2018/.

Related test: https://openqa.opensuse.org/tests/984585/modules/ntp/steps/31