dev_appserver.py intermittently failing

[Adam Denenberg]

When running dev_appserver.py dev.yaml, every once in a while it just plain fails unable to link with the following error.  Simply restarting works fine.  Any ideas here ?

INFO     2017-08-10 14:58:14,376 devappserver2.py:116] Skipping SDK update check.

INFO     2017-08-10 14:58:14,493 api_server.py:313] Starting API server at: http://localhost:59255

INFO     2017-08-10 14:58:14,501 dispatcher.py:226] Starting module "api" running at: http://localhost:8080

INFO     2017-08-10 14:58:14,507 admin_server.py:116] Starting admin server at: http://localhost:8000

WARNING  2017-08-10 14:58:14,507 devappserver2.py:207] No default module found. Ignoring.

/Users/dberg/Downloads/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/mtime_file_watcher.py:182: UserWarning: There are too many files in your application for changes in all of them to be monitored. You may have to restart the development server to see some changes to your files.

  'There are too many files in your application for '

google-cloud-sdk/platform/google_appengine/goroot-1.8/pkg/tool/darwin_amd64/link: /var/folders/x1/7vmj7p5s0rg4l3n65b6l_27w0000gp/T/tmpNj3HAlappengine-go-bin/src/services.a: not package main

2017/08/10 10:58:22 go-app-builder: build timing: 0×skip (24ms total), 34×compile (4.555s total), 1×link (32ms total)

2017/08/10 10:58:22 go-app-builder: failed running link: exit status 2

Then restarting, works fine.

dev.yaml looks like

runtime: go

api_version: go1.8

service: api

env: standard

skip_files:

- ^(.*)?_test.go

- ^(.*)?populate.go

handlers:

- url: /.*

  script: _go_app