Every build has a build log. A build log is a permanent record of all the output generated by compiling the job's source-code and executing the tests. To view a build log:
- Navigate to the build results for the plan or job, as described in Viewing a build result, and click the desired build result.
- Click the Logstab.
- Click View for the desired log.
- Click Download to download a text file of the log.
Screenshot: Build Log

{"serverDuration": 116, "requestCorrelationId": "9a32387e44e1712e"}