After resolving JMC-7903, spotless bails out:

Error: Failed to execute goal com.diffplug.spotless:spotless-maven-plugin:2.14.0:check (default-cli) on project common: The following files had format violations:
Error: src/main/java/org/openjdk/jmc/common/collection/FastAccessNumberMap.java
Error: @@ -255,4 +255,4 @@
Error: \t\t\tthrow·new·UnsupportedOperationException();
Error: \t\t}
Error: \t}
Error: -}
Error: +}
Error: Run 'mvn spotless:apply' to fix these violations.
Error: -> [Help 1]
Error:
Error: To see the full stack trace of the errors, re-run Maven with the -e switch.
Error: Re-run Maven using the -X switch to enable full debug logging.
Error:
Error: For more information about the errors and possible solutions, please read the following articles:
Error: [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
Error:
Error: After correcting the problems, you can resume the build with the command
Error: mvn <args> -rf :common
Error: Process completed with exit code 1.