A regular expression to find in the build log.

The regular expression should match the entire line, so if you are looking for FATAL first in the line but don't know what comes after it, your expression should be ^FATAL.*

Substitutions may be made within the description with placeholders of the form ${I,G}, where I is the indication number and G is the captured group within the indication expression. e.g., ${1,1} would be replaced with the first indication's first captured group and ${1,2} would be replaced with the first indication's second captured group.