Hi, thanks for sharing this issue.

This sort of problem is usually caused by build loops. Something is constantly making changes to files in the source directory, which keeps triggering NCrunch. Sometimes this is actually triggered by NCrunch itself - if the source contains absolute file paths, merely running the build (or sometimes tests) can cause source files in the foreground solution to change, which triggers another build, and it keeps going around and around.

The best way to diagnose this is by turning on logging in NCrunch, then using the logs to see which file changes are triggering the build.

You'll need to have a log verbosity of Medium or Detailed to see the file changes. Under Rider, NCrunch will write logs to the backend*.log file that can be found by going through Help->Diagnostic Tools->Show Log In Explorer.

Alternatively you can probably see it by choosing 'Submit bug report' in the NCrunch menu and saving a ZIP file, which contains the recent logs. In this way you won't need to sift through Rider logs, but the log window is much more limited.