Added handling of null branching labels

5 jobs for master in 6 minutes and 12 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Setup
passed #22369
setup

00:00:43

 
  Build
passed #22370
build

00:01:18

 
  Test
passed #22371
test

00:01:25

 
  Deploy
passed #22372
deploy

00:02:21

failed #22373
allowed to fail
site

00:00:22

 
Name Stage Failure
failed
site Deploy There is an unknown failure, please try again
8263 [INFO] ------------------------------------------------------------------------
8265 [ERROR] Failed to execute goal org.apache.maven.plugins:maven-site-plugin:3.3:site (default-cli) on project psdbg: failed to get report for org.apache.maven.plugins:maven-javadoc-plugin: Failed to execute goal on project matcher: Could not resolve dependencies for project edu.kit.iti.formal.psdbg:matcher:jar:0.1-SNAPSHOT: Could not find artifact edu.kit.iti.formal.psdbg:keydeps:jar:1.0 in central (https://repo.maven.apache.org/maven2) -> [Help 1]
8266 [ERROR]
8267 [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
8267 [ERROR] Re-run Maven using the -X switch to enable full debug logging.
8267 [ERROR]
8267 [ERROR] For more information about the errors and possible solutions, please read the following articles:
8267 [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
ERROR: Job failed: exit code 1