Build #686 (Sep 23, 2020, 4:21:14 PM)

	Build Artifacts
	Changes This fixes a bug where #isSelfVariable is send to a RBVariableNode with a nil variable. Reason: Semantic analysis was broken and that was hidden behing an on: Error do: handler... (details / githubweb) another to not re-introduce issue #7222 (details / githubweb)
	Push event to branch Pharo9.0 at 4:20:59 PM on Sep 23, 2020
	Revision: b338bc543a9915f543b31a06f6e3e5cc46ebd87e Repository: https://github.com/pharo-project/pharo.git Pharo9.0
	Test Result (1 failure / +1) unix-32 / Tests-unix-32 / Unix32.TaskIt.Tests.Services.TKTServiceMemoryLeakTest.testWorkerProcessInstancesAreCollectedAfterStartingAndStoppingService