My Bitbucket branch source fails to load after upgrading to SCM API 2.0. It seems similar to 41207, but slightly different stacktrace, so I'm reporting it separately. I took the liberty of adding this to the SCM API 2.0 Upgrade Fallout epic - feel free to remove if this is unrelated.

SEVERE: Failed Loading item Bitbucket
java.lang.AssertionError: org.jenkinsci.plugins.registry.notification.TriggerStore is not available until after all jobs are loaded
at org.jenkinsci.plugins.registry.notification.TriggerStore.getInstance(TriggerStore.java:184)
at org.jenkinsci.plugins.registry.notification.TriggerStore$ItemListener.onLocationChanged(TriggerStore.java:383)
at hudson.model.listeners.ItemListener$6.apply(ItemListener.java:238)
at hudson.model.listeners.ItemListener$6.apply(ItemListener.java:236)
at hudson.model.listeners.ItemListener.forAll(ItemListener.java:167)
at hudson.model.listeners.ItemListener.fireLocationChange(ItemListener.java:236)
at hudson.model.AbstractItem.renameTo(AbstractItem.java:335)
at hudson.model.Job.renameTo(Job.java:659)
at jenkins.branch.MultiBranchProject.onLoad(MultiBranchProject.java:176)
at hudson.model.Items.load(Items.java:372)
at hudson.model.ItemGroupMixIn.loadChildren(ItemGroupMixIn.java:116)
at com.cloudbees.hudson.plugins.folder.AbstractFolder.onLoad(AbstractFolder.java:484)
at jenkins.branch.OrganizationFolder.onLoad(OrganizationFolder.java:184)
at hudson.model.Items.load(Items.java:372)
at jenkins.model.Jenkins$17.run(Jenkins.java:3067)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:169)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:282)
at jenkins.model.Jenkins$7.runTask(Jenkins.java:1066)
at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:210)
at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:117)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)