I'm sorry you are having trouble. We would like to help you, but we cannot do so from this incomplete bug report. I was not able to reproduce your problem, though I didn't boot up a Fedora 32 computer to try.
Here are some things you might try:
* ensure that you have pulled master
* ensure that there are no local changes
* run `./gradlew clean` before `./gradlew assemble`
If those don't work, can you please provide all the details that were requested in the issue template
https://github.com/typetools/checker-framework/issues/new and the bug reporting section of the manual (
https://checkerframework.org/manual/#reporting-bugs)? Please also run `./gradlew generateGitProperties` and attach the build/resources/main/git.properties file. This will enable us to reproduce the problem, fix it, and verify the fix. Thanks!