Lambda randomly returning 500

[dwragge]

Usually, it's when the request is taking a long time, so might be to do with a timeout somewhere, but it will return a 500. Logs show a request being sent to the VSTS API but then the lambda finishes before another log statement. 9/10 times a refresh will fix.

Sample CloudWatch logs:

2018/05/12 11:17:01 Processig Lambda request fe044dd0-55d5-11e8-88c0-ad636738a2e8
2018/05/12 11:17:01 Sending URL Request to https://Dymajo.visualstudio.com/Dymajo Transfer/_apis/build/builds?api-version=5.0-preview.4
2018/05/12 11:17:05 Received response in 3976ms Status: 200 OK, Content Type: application/json; charset=utf-8; api-version=5.0-preview.4
2018/05/12 11:17:05 Received 33 builds
2018/05/12 11:17:05 Sending URL Request to https://Dymajo.visualstudio.com/Dymajo Transfer/_apis/test/codecoverage?api-version=5.0-preview.1&flags=7&buildId=36
END RequestId: fe04eab6-55d5-11e8-948f-d3992a188d1a