"http-bio-8080-exec-764" daemon prio=3 tid=0x000000000b154000 nid=0x1ec9 runnable [0xfffffd73c2def000]
   java.lang.Thread.State: RUNNABLE
	at java.lang.String.toLowerCase(String.java:2439)
	at java.lang.String.toLowerCase(String.java:2524)
	at com.atlassian.jira.bc.user.search.UserMatcherPredicate.apply(UserMatcherPredicate.java:62)
	at com.atlassian.jira.bc.user.search.UserMatcherPredicate.apply(UserMatcherPredicate.java:15)
	at com.atlassian.jira.bc.user.search.DefaultAssigneeService.findAssignableUsers(DefaultAssigneeService.java:108)
	at com.atlassian.jira.bc.user.search.DefaultAssigneeService.access$200(DefaultAssigneeService.java:46)
	at com.atlassian.jira.bc.user.search.DefaultAssigneeService$AssignableUsers.findAllAsSet(DefaultAssigneeService.java:440)
	at com.atlassian.jira.bc.user.search.DefaultAssigneeService$AssignableUsers.findAll(DefaultAssigneeService.java:423)
	at com.atlassian.jira.bc.user.search.DefaultAssigneeService$AssignableUsers.findAllAndSort(DefaultAssigneeService.java:448)
	at com.atlassian.jira.bc.user.search.DefaultAssigneeService.findAssignableUsers(DefaultAssigneeService.java:87)
	at com.atlassian.jira.issue.fields.Assignees.isAssignable(Assignees.java:261)
	at com.atlassian.jira.issue.fields.Assignees.makeAssigneeOptions(Assignees.java:249)
	at com.atlassian.jira.issue.fields.Assignees.optionsForFrotherControl(Assignees.java:84)
	at com.atlassian.jira.issue.fields.AssigneeSystemField.getEditHtml(AssigneeSystemField.java:168)