No longer ignore maven compiler plugin to avoid issues such as moving to

photon
https://bugs.eclipse.org/bugs/show_bug.cgi?id=536558
4 jobs for master in 31 minutes and 6 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Build
passed #4575
jars-j8

00:00:35

passed #4574
java8

00:13:42

 
  Test
failed #4577
allowed to fail
java10

00:02:56

passed #4576
java7

00:13:52

 
Name Stage Failure
failed
java10 Test
164888 [ERROR] 
164888 [ERROR] Re-run Maven using the -X switch to enable full debug logging.
164888 [ERROR]
164888 [ERROR] For more information about the errors and possible solutions, please read the following articles:
164888 [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
164889 [ERROR]
164889 [ERROR] After correcting the problems, you can resume the build with the command
164889 [ERROR] mvn <goals> -rf :org.ow2.sat4j.core
ERROR: Job failed: exit code 1