GAE Java8 Standard, BigQuery API throws "Invalid Project Id"

Environment: App Engine Standard Java 8.
In pom.xml I have the following:

com.google.cloud
google-cloud
0.21.0-alpha

com.google.cloud
google-cloud-bigquery
0.21.1-beta

My app has this example in a servlet:
BigQuery bigquery = BigQueryOptions.getDefaultInstance().getService();
String datasetId = "my_dataset_id";
bigquery.create(DatasetInfo.newBuilder(datasetId).build());

When the servlet is called, I get the following exception:
com.google.cloud.bigquery.BigQueryException: Invalid project ID 'MyProjIDHere'. Project IDs must contain 6-63 lowercase letters, digits, or dashes. IDs must start with a letter and may not end with a dash.
at com.google.cloud.bigquery.spi.v2.HttpBigQueryRpc.translate(HttpBigQueryRpc.java:86)
at com.google.cloud.bigquery.spi.v2.HttpBigQueryRpc.create(HttpBigQueryRpc.java:141)
at com.google.cloud.bigquery.BigQueryImpl$1.call(BigQueryImpl.java:172)
at com.google.cloud.bigquery.BigQueryImpl$1.call(BigQueryImpl.java:169)
at com.google.api.gax.retrying.DirectRetryingExecutor.submit(DirectRetryingExecutor.java:94)
at com.google.cloud.RetryHelper.runWithRetries(RetryHelper.java:54)
at com.google.cloud.bigquery.BigQueryImpl.create(BigQueryImpl.java:169)
at com.google.test.HelloAppEngine.doGet(HelloAppEngine.java:56)

I also tried a Logging API example in my Java8 GAE Standard app:
LoggingOptions options = LoggingOptions.getDefaultInstance();
try(Logging logging = options.getService()) {
MetricInfo metricInfo = MetricInfo.newBuilder("test-metric", "severity >= ERROR")
.setDescription("Log entries with severity higher or equal to ERROR")
.build();
logging.create(metricInfo);
}

The error is similar, so it may be related:
java.lang.IllegalArgumentException: A project ID is required for this service but could not be determined from the builder or the environment. Please set a project ID using the builder.
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:122)
at com.google.cloud.ServiceOptions.(ServiceOptions.java:240)
at com.google.cloud.logging.LoggingOptions.(LoggingOptions.java:102)
at com.google.cloud.logging.LoggingOptions$Builder.build(LoggingOptions.java:96)
at com.google.cloud.logging.LoggingOptions.getDefaultInstance(LoggingOptions.java:55)