Program: 62666
Project: 62666
Buggy source:
private static List<String> retrieveGitlabProjectIds(Run<?,?> build,EnvVars environment){
  LOGGER.log(Level.INFO,"String_Node_Str");
  GitLabWebHookCause cause=build.getCause(GitLabWebHookCause.class);
  if (cause != null) {
    return Collections.singletonList(cause.getData().getSourceProjectId().toString());
  }
  List<String> result=new ArrayList<>();
  GitLabApi gitLabClient=getClient(build);
  if (gitLabClient == null) {
    LOGGER.log(Level.WARNING,"String_Node_Str");
    return result;
  }
  final BuildData buildData=build.getAction(BuildData.class);
  if (buildData == null) {
    LOGGER.log(Level.INFO,"String_Node_Str");
    return result;
  }
  final Set<String> remoteUrls=buildData.getRemoteUrls();
  for (  String remoteUrl : remoteUrls) {
    try {
      LOGGER.log(Level.INFO,"String_Node_Str",remoteUrl);
      final String projectNameWithNameSpace=ProjectIdUtil.retrieveProjectId(environment.expand(remoteUrl));
      if (StringUtils.isNotBlank(projectNameWithNameSpace)) {
        String projectId=projectNameWithNameSpace;
        if (projectNameWithNameSpace.contains("String_Node_Str")) {
          try {
            projectId=gitLabClient.getProject(projectNameWithNameSpace).getId().toString();
          }
 catch (          WebApplicationException|ProcessingException e) {
            LOGGER.log(Level.SEVERE,String.format("String_Node_Str",projectNameWithNameSpace),e);
          }
        }
        result.add(projectId);
      }
    }
 catch (    ProjectIdUtil.ProjectIdResolutionException e) {
    }
  }
  return result;
}

Fixed version (ground truth):
private static List<GitLabBranchBuild> retrieveGitlabProjectIds(Run<?,?> build,EnvVars environment){
  LOGGER.log(Level.INFO,"String_Node_Str");
  final List<GitLabBranchBuild> result=new ArrayList<>();
  GitLabWebHookCause cause=build.getCause(GitLabWebHookCause.class);
  if (cause != null) {
    return Collections.singletonList(new GitLabBranchBuild(cause.getData().getSourceProjectId().toString(),cause.getData().getLastCommit()));
  }
  final GitLabApi gitLabClient=getClient(build);
  if (gitLabClient == null) {
    LOGGER.log(Level.WARNING,"String_Node_Str");
    return result;
  }
  final SCMRevisionAction scmRevisionAction=build.getAction(SCMRevisionAction.class);
  final SCMRevision scmRevision=scmRevisionAction.getRevision();
  String scmRevisionHash=null;
  if (scmRevision instanceof AbstractGitSCMSource.SCMRevisionImpl) {
    scmRevisionHash=((AbstractGitSCMSource.SCMRevisionImpl)scmRevision).getHash();
  }
  final List<BuildData> buildDatas=build.getActions(BuildData.class);
  if (CollectionUtils.isEmpty(buildDatas)) {
    LOGGER.log(Level.INFO,"String_Node_Str");
    return result;
  }
  for (  final BuildData buildData : buildDatas) {
    for (    final Entry<String,Build> buildByBranchName : buildData.getBuildsByBranchName().entrySet()) {
      if (buildByBranchName.getValue().getSHA1().equals(ObjectId.fromString(scmRevisionHash))) {
        final Set<String> remoteUrls=buildData.getRemoteUrls();
        for (        String remoteUrl : remoteUrls) {
          try {
            LOGGER.log(Level.INFO,"String_Node_Str",remoteUrl);
            final String projectNameWithNameSpace=ProjectIdUtil.retrieveProjectId(environment.expand(remoteUrl));
            if (StringUtils.isNotBlank(projectNameWithNameSpace)) {
              String projectId=projectNameWithNameSpace;
              if (projectNameWithNameSpace.contains("String_Node_Str")) {
                try {
                  projectId=gitLabClient.getProject(projectNameWithNameSpace).getId().toString();
                }
 catch (                WebApplicationException|ProcessingException e) {
                  LOGGER.log(Level.SEVERE,String.format("String_Node_Str",projectNameWithNameSpace),e);
                }
              }
              result.add(new GitLabBranchBuild(projectId,scmRevisionHash));
            }
          }
 catch (          ProjectIdUtil.ProjectIdResolutionException e) {
          }
        }
      }
    }
  }
  return result;
}