/**
 * Base class for {@link UnexpectedBuildFailure} and {@link UnexpectedBuildSuccess}.
 *
 * @since 2.9
 * @see BuildResult
 */
public abstract class UnexpectedBuildResultException extends RuntimeException {

    private final BuildResult buildResult;

    UnexpectedBuildResultException(String message, BuildResult buildResult) {
        super(message);
        this.buildResult = buildResult;
    }

    /**

package org.gradle.testkit.runner;

/**
 * Thrown when executing a build that was expected to succeed, but failed.
 *
 * @since 2.6
 * @see GradleRunner#build()
 */
public class UnexpectedBuildFailure extends UnexpectedBuildResultException {
    public UnexpectedBuildFailure(String message, BuildResult buildResult) {
        super(message, buildResult);
    }

/**
 * Thrown when executing a build that was expected to fail, but succeeded.
 *
 * @since 2.6
 * @see GradleRunner#buildAndFail()
 */
public class UnexpectedBuildSuccess extends UnexpectedBuildResultException {
    public UnexpectedBuildSuccess(String message, BuildResult buildResult) {
        super(message, buildResult);
    }

Method <org.gradle.testkit.runner.UnexpectedBuildResultException.getBuildResult()> does not have raw return type assignable to org.gradle.api.provider.Provider in (UnexpectedBuildResultException.java:0)