then:
        def e = thrown(InvalidRunnerConfigurationException)
        e.message == "Debug mode is not allowed when environment variables are specified. " +
            "Debug mode runs 'in process' but we need to fork a separate process to pass environment variables. " +
            "To run with debug mode, please remove environment variables."
    }

import org.gradle.api.tasks.compile.BaseForkOptions;
import org.gradle.api.tasks.compile.ProviderAwareCompilerDaemonForkOptions;

/**
 * This class and its subclasses exist so that we have an isolatable instance
 * of the fork options that can be passed along with the compilation spec to a
 * worker executor.  Since {@link ProviderAwareCompilerDaemonForkOptions}
 * and its subclasses can accept user-defined {@link org.gradle.process.CommandLineArgumentProvider}

            }

            dependencies {
                errorprone("com.google.errorprone:error_prone_core:2.8.0")
            }

            tasks.withType(JavaCompile).configureEach {
                options.fork = true
                options.errorprone {
                    check("DoubleBraceInitialization", net.ltgt.gradle.errorprone.CheckSeverity.ERROR)
                }
            }
        """

                    // ~25MB
                    ext.memoryHog = new byte[1024*1024*25]

                    tasks.withType(JavaCompile).configureEach {
                        options.fork = true
                        options.forkOptions.jvmArgs << "-Dcounter=" + project.property("counter")
                    }
                }
            """
        }
    }

  echo
  echo "where REMOTE is your personal fork (maybe ${UPSTREAM_REMOTE}? Consider swapping those.)."
  echo "OR consider setting UPSTREAM_REMOTE and FORK_REMOTE to different values."
  echo
  make-a-pr
  cleanbranch=""
  exit 0
fi

echo
echo "+++ I'm about to do the following to push to GitHub (and I'm assuming ${FORK_REMOTE} is your personal fork):"
echo

    ExecHandleBuilder setDisplayName(String displayName);

    /**
     * When true, spawn the process. That is, start the process and leave it running once successfully started. When false, fork the process (the default). That is, start the process and wait for it to complete.
     */
    ExecHandleBuilder setDaemon(boolean daemon);

    /**
     * Sets a handler for the output streams of the process.

We have been working inside Google on a fork of Go that uses
BoringCrypto (the core of [BoringSSL](https://boringssl.googlesource.com/boringssl/))
for various crypto primitives, in furtherance of some work related to FIPS 140.
We have heard that some external users of Go would be
interested in this code as well, so we have published this code
here in the main Go repository behind the setting GOEXPERIMENT=boringcrypto.

    @Override
    protected String getTaskName() {
        return ":compile"
    }

    @Override
    String getDaemonConfiguration() {
        return "compile.groovyOptions.fork = true"
    }

    @Override
    String getForkOptionsObject() {
        return "compile.groovyOptions.forkOptions"
    }

    @Override
    protected void setupProjectIn(TestFile projectDir) {

    @Override
    protected String getTaskName() {
        return ":compile"
    }

    @Override
    String getDaemonConfiguration() {
        return "compile.options.fork = true"
    }

    @Override
    String getForkOptionsObject() {
        return "compile.options.forkOptions"
    }

    @Override
    protected void setupProjectIn(TestFile projectDir) {

                }
            }

            subprojects { p ->
                apply plugin: 'java'
                tasks.withType(JavaCompile) { task ->
                    task.options.fork = true
                    rootProject.tasks.expireWorkers.dependsOn task
                }
            }
        """.stripIndent()