Failed to generate client library: Read time-outs

[cmaan]

We get read time outs when trying to generate our client libraries using gradle endpointsClientLib.

Caused by: java.net.SocketTimeoutException: Read timed out
        at com.google.api.client.http.javanet.NetHttpResponse.<init>(NetHttpResponse.java:36)
        at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:149)
        at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:84)
        at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1012)
        at com.google.api.server.spi.tools.CloudClientLibGenerator.postRequest(CloudClientLibGenerator.java:65)

When cutting down on the number of endpoints, the generation sometimes succeeds. Our discovery doc size is 352K.

We believe that the generation is hitting the Appengine request duration limit of 60 sec. Locally (using https://github.com/google/apis-client-generator/), the generation takes 13 sec, but that method does not generate the same code structure as the endpointsClientLib task, so can't be used as a drop-in replacement/workaround. Maybe deploying to a larger instance size is a solution?