Musca-B1 has additional test failures for Test #250 and Test #251 compared to AN521. This needs to be investigated and fixed. Below are the relevant log :

TEST: 250 | DESCRIPTION: Testing crypto key management APIs
[Info] Executing tests from non-secure
[Check 1] Test psa_open_key 16 Byte AES
[Sec Thread] Secure image initializing!
Booting TFM v1.1
[Sec Thread] Secure image initializing!
Booting TFM v1.1
Non-Secure system starting...

TEST: 250 | DESCRIPTION: Testing crypto key management APIs
[Info] Executing tests from non-secure
[Check 1] Test psa_open_key 16 Byte AES
[Check 2] Test psa_open_key 24 Byte AES

Failed at Checkpoint: 6
Actual: -139
Expected: 0

TEST RESULT: FAILED (Error Code=0x00000001)

TEST: 251 | DESCRIPTION: Testing crypto key management APIs
[Info] Executing tests from non-secure
[Check 1] Test psa_close_key 16 Byte AES
[Check 2] Test psa_close_key 24 Byte AES

Failed at Checkpoint: 3
Actual: -139
Expected: 0

TEST RESULT: FAILED (Error Code=0x00000001)