SearchBlox connector fails tests on JDK 1.8

run-tests:
    [junit] Testsuite: org.apache.manifoldcf.agents.output.searchblox.tests.SearchBloxDocumentTest
    [junit] Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0.159 sec
    [junit]
    [junit] Testcase: testUpdateJsonString(org.apache.manifoldcf.agents.output.searchblox.tests.SearchBloxDocumentTest):        FAILED
    [junit] null expected:<{"[document":{"content":"I am a nice content in english!","uid":"URI","title":"I am a nice title","description":"I am a little tiny description","contenttype":"html","colname":"collection1","meta":{"meta2":["I am META2!"],"meta1":["I am META1!"],"share_allow":["user3","user2","user1"],"share_deny":["user4","user5"],"document_deny":["user52","user42"],"document_allow":["user22","user12","user33"]},"size":"100"},"apikey":"apikey"]}> but was:<{"[apikey":"apikey","document":{"uid":"URI","colname":"collection1","size":"100","meta":{"meta2":["I am META2!"],"meta1":["I am META1!"],"share_allow":["user1","user2","user3"],"document_deny":["user42","user52"],"share_deny":["user5","user4"],"document_allow":["user22","user33","user12"]},"description":"I am a little tiny description","title":"I am a nice title","content":"I am a nice content in english!","contenttype":"html"}]}>
    [junit] junit.framework.ComparisonFailure: null expected:<{"[document":{"content":"I am a nice content in english!","uid":"URI","title":"I am a nice title","description":"I am a little tiny description","contenttype":"html","colname":"collection1","meta":{"meta2":["I am META2!"],"meta1":["I am META1!"],"share_allow":["user3","user2","user1"],"share_deny":["user4","user5"],"document_deny":["user52","user42"],"document_allow":["user22","user12","user33"]},"size":"100"},"apikey":"apikey"]}> but was:<{"[apikey":"apikey","document":{"uid":"URI","colname":"collection1","size":"100","meta":{"meta2":["I am META2!"],"meta1":["I am META1!"],"share_allow":["user1","user2","user3"],"document_deny":["user42","user52"],"share_deny":["user5","user4"],"document_allow":["user22","user33","user12"]},"description":"I am a little tiny description","title":"I am a nice title","content":"I am a nice content in english!","contenttype":"html"}]}>
    [junit]     at org.apache.manifoldcf.agents.output.searchblox.tests.SearchBloxDocumentTest.testUpdateJsonString(SearchBloxDocumentTest.java:61)
    [junit]
    [junit]

BUILD FAILED
/Users/molgun/Downloads/apache-manifoldcf-2.1/dist/connector-build.xml:1219: Test org.apache.manifoldcf.agents.output.searchblox.tests.SearchBloxDocumentTest failed