06:03:18 There were 6 errors:
06:03:18 
06:03:18 1) DataFileTest::test_write_read_nothing_round_trip
06:03:18 Only variables should be passed by reference
06:03:18 
06:03:18 /src/test/DataFileTest.php:85
06:03:18 
06:03:18 2) DataFileTest::test_write_read_null_round_trip
06:03:18 Only variables should be passed by reference
06:03:18 
06:03:18 /src/test/DataFileTest.php:100
06:03:18 
06:03:18 3) DataFileTest::test_write_read_string_round_trip
06:03:18 Only variables should be passed by reference
06:03:18 
06:03:18 /src/test/DataFileTest.php:115
06:03:18 
06:03:18 4) DataFileTest::test_write_read_round_trip
06:03:18 Only variables should be passed by reference
06:03:18 
06:03:18 /src/test/DataFileTest.php:133
06:03:18 
06:03:18 5) DataFileTest::test_write_read_true_round_trip
06:03:18 Only variables should be passed by reference
06:03:18 
06:03:18 /src/test/DataFileTest.php:149
06:03:18 
06:03:18 6) DataFileTest::test_write_read_false_round_trip
06:03:18 Only variables should be passed by reference
06:03:18 
06:03:18 /src/test/DataFileTest.php:164
06:03:18 
06:03:18 --
06:03:18 
06:03:18 There was 1 failure:
06:03:18 
06:03:18 1) SchemaTest::test_json_decode
06:03:18 True
06:03:18 Failed asserting that true matches expected null.
06:03:18 
06:03:18 /src/test/SchemaTest.php:442