assertTrue !state2.hasMutableState()
                    }
                    state2.applyToMutableState {
                        assertTrue state1.hasMutableState()
                        assertTrue state2.hasMutableState()
                    }
                    assert state1.hasMutableState()
                    assert !state2.hasMutableState()
                }
            }

                if (added) {
                    canDoAnythingToThisProject.remove(currentThread);
                }
            }
        }

        @Override
        public boolean hasMutableState() {
            Thread currentThread = Thread.currentThread();
            if (canDoAnythingToThisProject.contains(currentThread) || workerLeaseService.isAllowedUncontrolledAccessToAnyProject()) {
                return true;

        ProjectComponentIdentifier projectId = module.getProjectId();
        if (projectId != null) {
            ProjectState projectState = projectStateRegistry.stateFor(projectId);
            if (!projectState.hasMutableState()) {
                throw new IllegalStateException("Thread should hold project lock for " + projectState.getDisplayName());
            }
            return projectState.fromMutableState(project -> {

        }

        private IsolatedParameters isolateParameters(InputFingerprinter inputFingerprinter) {
            ModelContainer<?> model = owner.getModel();
            if (!model.hasMutableState()) {
                // This may happen when a task visits artifacts using a FileCollection instance created from a Configuration instance in a different project (not an artifact produced by a different project, these work fine)