Write possible errors warning to log only

Author: Flamefire

easybuild/framework/easyblock.py

@@ -3234,9 +3234,8 @@ def build_and_install_one(ecdict, init_env):
 
     # check for errors
     if run.errors_found_in_log > 0:
-        print_msg("WARNING: %d possible error(s) were detected in the "
-                  "build logs, please verify the build." % run.errors_found_in_log,
-                  log=_log, silent=silent)
+        _log.warning("%d possible error(s) were detected in the "
+                     "build logs, please verify the build.", run.errors_found_in_log)
 
     if app.postmsg:
         print_msg("\nWARNING: %s\n" % app.postmsg, log=_log, silent=silent)