fsleyes currently depends on rtree 0.8.3, but rtree was updated to 0.9.x This makes it impossible to install both together.
FEDORA-2020-59553bd43a has been submitted as an update to Fedora 31. https://bodhi.fedoraproject.org/updates/FEDORA-2020-59553bd43a
python-fsleyes-0.32.2-1.fc31, python-fslpy-2.8.1-1.fc31 has been pushed to the Fedora 31 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-59553bd43a
python-fsleyes-0.32.2-1.fc31, python-fslpy-2.8.1-1.fc31, python-trimesh-3.5.23-2.fc31 has been pushed to the Fedora 31 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-59553bd43a
python-fsleyes-0.32.2-1.fc31, python-fslpy-2.8.1-1.fc31, python-trimesh-3.5.23-2.fc31 has been pushed to the Fedora 31 stable repository. If problems still persist, please make note of it in this bug report.