// notify listeners about "soft" project build failures only
        if (t instanceof Exception && !(t instanceof RuntimeException)) {
            eventCatapult.fire(ExecutionEvent.Type.ProjectFailed, currentSession, null, (Exception) t);
        }

        // reactor failure modes
        if (t instanceof RuntimeException || !(t instanceof Exception)) {
            // fail fast on RuntimeExceptions, Errors and "other" Throwables

                            .getPluginDescriptor()
                            .getLifecycleMappings()
                            .values()));
                } catch (Exception e) {
                    throw new RuntimeException("Unable to load plugin lifecycles", e);
                }
            }

            @Override
            public ClassLoader getClassLoader() {
                return delegate.getMojoDescriptor().getRealm();

                    new ProjectExecutionEvent(session, currentProject, t));

            // rethrow original errors and runtime exceptions
            if (t instanceof RuntimeException) {
                throw (RuntimeException) t;
            }
            if (t instanceof Error) {
                throw (Error) t;
            }
        } finally {
            session.setCurrentProject(null);

    void testHandleExceptionLoopInCause() {
        // Some broken exception that does return "this" as getCause
        AtomicReference<Throwable> causeRef = new AtomicReference<>(null);
        Exception cause2 = new RuntimeException("loop") {
            @Override
            public synchronized Throwable getCause() {
                return causeRef.get();
            }
        };
        causeRef.set(cause2);

                        } catch (InterruptedException e) {
                            throw new RuntimeException(e);
                        }
                        try {
                            projectOs.writeTo(originalSystemOUtStream);
                        } catch (IOException e) {
                            throw new RuntimeException(e);
                        }

                        projectOs.reset();
                    }

                try {
                    return supplier.load();
                } catch (PluginResolutionException | PluginContainerException e) {
                    throw new RuntimeException(e);
                }
            });
        } catch (RuntimeException e) {
            if (e.getCause() instanceof PluginResolutionException) {
                throw (PluginResolutionException) e.getCause();
            }

            } catch (ClassCastException e) {
                // to be processed in the outer catch block
                throw e;
            } catch (RuntimeException e) {
                throw new PluginExecutionException(mojoExecution, project, e);
            }
        } catch (PluginContainerException e) {
            mojoExecutionListener.afterExecutionFailure(

 * Currently, this modification would create compatibility problems for existing plugins.
 */
public class DuplicateArtifactAttachmentException extends RuntimeException {

    private static final String DEFAULT_MESSAGE = "Duplicate artifact attachment detected.";

    private Artifact artifact;

    private final MavenProject project;

                        rr.getPolicy(true).getUpdatePolicy(),
                        rr.getPolicy(false).getChecksumPolicy());

            } catch (Exception e) {
                throw new RuntimeException("Unable to create repository", e);
            }
        } else {
            // TODO
            throw new UnsupportedOperationException("Not yet implemented");
        }
    }

/**
 * Exception thrown when the identity of an artifact can not be established,
 * e.g. one of groupId, artifactId, version or type is null.
 */
public class InvalidArtifactRTException extends RuntimeException {

    private final String groupId;
    private final String artifactId;
    private final String version;
    private final String type;
    private final String baseMessage;