Linux build of NUCLEO_F030R8 fails: TypeError: unhashable type: 'dict'

[deece]

Description

When attempting to build on Linux, I get the following failure (I have no private settings):

$ MBED_GCC_ARM_PATH=/usr/local/gcc-arm-none-eabi-7-2018-q2-update/bin python build.py -c -v -m NUCLEO_F030R8 -t GCC_ARM 
Traceback (most recent call last):
  File "build.py", line 191, in <module>
    if Target.get_target(mcu).is_PSA_secure_target:
  File "/home/adsilva/src/mbed-os/tools/targets/__init__.py", line 92, in wrapper
    if (func.__name__, args) not in CACHES:
TypeError: unhashable type: 'dict'

This fails on master (5047ea4) but works on mbed-os-5.9.7

Issue request type

[ ] Question
[ ] Enhancement
[X] Bug

[ciarmcom]

Internal Jira reference: https://jira.arm.com/browse/MBOCUSTRIA-227

[0xc0170]

@ARMmbed/mbed-os-psa Can you review (is_PSA_secure_target fails)

[orenc17]

#8932 will fix that

[cmonr]

Feel free to retest. #8932 has been merged.

[0xc0170]

Reopen with an update if the issue is not yet resolved, we will close this now as resolved