Cliff@Cliff-PC MINGW64 ~/Desktop/project/openmrs-standalone (master)
$ mvn clean package -Dopenmrs.version=2.4.0-SNAPSHOT
[INFO] Scanning for projects...
[INFO]
[INFO] -----------------------< org.openmrs:standalone >-----------------------
[INFO] Building standalone 2.0.0-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ standalone ---
[INFO] Deleting C:\Users\Cliff\Desktop\project\openmrs-standalone\target
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  10.335 s
[INFO] Finished at: 2020-09-29T14:04:31+03:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-clean-plugin:2.5:clean (default-clean) on project standalone: Failed to clean project: Failed to delete C:\Users\Cliff\Desktop\project\openmrs-standalone\target\emptydatabase\data\mysql -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

Cliff@Cliff-PC MINGW64 ~/Desktop/project/openmrs-standalone (master)
$