Stem test-full fails on master branch

I am getting some errors when executing "make test-full" on a clear version of master branch.

test_parsing_with_example                                    [FAILURE]
test_parsing_with_unknown_options                            [FAILURE]
test_query                                             1 ms  [SUCCESS]
test_query_on_failure                                  0 ms  [SUCCESS]
test_saving_manual_as_config                                 [FAILURE]
test_saving_manual_as_sqlite                                 [FAILURE]
.
.
.
test_connections_by_ss                                       [FAILURE]
.
.
.
[UNIT TEST] test_saving_manual_as_config (test.unit.manual.TestManual) ... ERROR
[UNIT TEST] test_saving_manual_as_sqlite (test.unit.manual.TestManual) ... ERROR
[RUN_PTRACE] test_connections_by_ss (test.integ.util.connection.TestConnection) ... ERROR

I think it is not a regression since maint-0.3.3 because it is failing on one of my bug branch (before release maint-0.3.3).

Nick suggested it could be a sandbox/libc problem.