Unable to use "mbed test" with option "-n"

[bogdanm]

I'm trying to run this command on mbed-os 862db41:

> mbed test -m K64F -t GCC_ARM -n tests-mbed_drivers-generic_tests -v

The test compiles, but I get this error for running (observe the mbedhtrun-script.py: error: no such option: -t part):

[mbed] Exec "mbedgt --test-spec c:\work\mbed\morpheus\mbed-os-clean\.build/tests\K64F\GCC_ARM\test_spec.json -n tests-mbed_drivers-generic_tests -V" in c:\work\mbed\morpheus\mbed-os-clean
mbedgt: greentea test automation tool ver. 1.2.0
mbedgt: test specification file 'c:\work\mbed\morpheus\mbed-os-clean\.build/tests\K64F\GCC_ARM\test_spec.json' (specified with --test-spec option)
mbedgt: using 'c:\work\mbed\morpheus\mbed-os-clean\.build/tests\K64F\GCC_ARM\test_spec.json' from current directory!
mbedgt: detecting connected mbed-enabled devices...
mbedgt: detected 1 device
        +---------------+----------------------+-------------+-------------+--------------------------+
        | platform_name | platform_name_unique | serial_port | mount_point | target_id                |
        +---------------+----------------------+-------------+-------------+--------------------------+
        | K64F          | K64F[0]              | COM38       | F:          | 024002211E1B1E0EE3C5E3B6 |
        +---------------+----------------------+-------------+-------------+--------------------------+
mbedgt: processing target 'K64F' toolchain 'GCC_ARM' compatible platforms... (note: switch set to --parallel 1)
        +---------------+----------------------+-------------+-------------+--------------------------+
        | platform_name | platform_name_unique | serial_port | mount_point | target_id                |
        +---------------+----------------------+-------------+-------------+--------------------------+
        | K64F          | K64F[0]              | COM38:9600  | F:          | 024002211E1B1E0EE3C5E3B6 |
        +---------------+----------------------+-------------+-------------+--------------------------+
mbedgt: test case filter (specified with -n option)
        test filtered in 'tests-mbed_drivers-generic_tests'
mbedgt: running 1 test for platform 'K64F' and toolchain 'GCC_ARM'
        use 1 instance of execution threads for testing
mbedgt: checking for 'host_tests' directory above image directory structure
        'host_tests' directory not found: two directory levels above image path checked
mbedgt: selecting test case observer...
        calling mbedhtrun: mbedhtrun -m K64F -p COM38:9600 -f ".build/tests/K64F/GCC_ARM/TESTS/mbed_drivers/generic_tests/generic_tests.bin" -d F: -C 4 -c shell -t 024002211E1B1E0EE3C5E3B6
mbedgt: mbed-host-test-runner: started
Usage: mbedhtrun-script.py [options]

mbedhtrun-script.py: error: no such option: -t
mbedgt: checking for GCOV data...
mbedgt: mbed-host-test-runner: stopped and returned 'TIMEOUT'
mbedgt: test case summary event not found
        no test case report present, assuming test suite to be a single test case!
        test suite: tests-mbed_drivers-generic_tests
        test case: tests-mbed_drivers-generic_tests
mbedgt: test on hardware with target id: 024002211E1B1E0EE3C5E3B6
mbedgt: test suite 'tests-mbed_drivers-generic_tests' ................................................ TIMEOUT in 0.38 sec
        test case: 'tests-mbed_drivers-generic_tests' ................................................ ERROR in 0.38 sec
mbedgt: test case summary: 0 passes, 1 failure
mbedgt: all tests finished!
mbedgt: shuffle seed: 0.7228190045
mbedgt: test suite report:
+--------------+---------------+----------------------------------+---------+--------------------+-------------+
| target       | platform_name | test suite                       | result  | elapsed_time (sec) | copy_method |
+--------------+---------------+----------------------------------+---------+--------------------+-------------+
| K64F-GCC_ARM | K64F          | tests-mbed_drivers-generic_tests | TIMEOUT | 0.38               | shell       |
+--------------+---------------+----------------------------------+---------+--------------------+-------------+
mbedgt: test suite results: 1 TIMEOUT
mbedgt: test case report:
+--------------+---------------+----------------------------------+----------------------------------+--------+--------+--------+--------------------+
| target       | platform_name | test suite                       | test case                        | passed | failed | result | elapsed_time (sec) |
+--------------+---------------+----------------------------------+----------------------------------+--------+--------+--------+--------------------+
| K64F-GCC_ARM | K64F          | tests-mbed_drivers-generic_tests | tests-mbed_drivers-generic_tests | 0      | 1      | ERROR  | 0.38               |
+--------------+---------------+----------------------------------+----------------------------------+--------+--------+--------+--------------------+
mbedgt: test case results: 1 ERROR
mbedgt: completed in 0.44 sec
mbedgt: exited with code 1
[mbed] ERROR: "mbedgt" returned error code 1.
[mbed] ERROR: Command "mbedgt --test-spec c:\work\mbed\morpheus\mbed-os-clean\.build/tests\K64F\GCC_ARM\test_spec.json -n tests-mbed_drivers-generic_tests -V" in "c:\work\mbed\morpheus\mbed-os-clean"

OS: Windows 7

Python module versions (latest modules available in pip at the time of writing this):

mbed-cli (0.9.1)
mbed-greentea (1.2.0)
mbed-host-tests (1.1.0)
mbed-ls (1.2.1)
mbed-test-wrapper (1.0.0)

[bogdanm]

@bridadan @mazimkhan

[bogdanm]

Very strangely, I got rid of this error by removing and reinstalling mbed-host-tests on my machine.