It's failing at this step from what I can see on the log from SignTools
Signing with original entitlements
Processing component /var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/tmpywg9go57/Payload/UTM.app/Frameworks/CydiaSubstrate.framework
Waiting for sub-component to finish signing: /var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/tmpywg9go57/Payload/UTM.app/Frameworks/CydiaSubstrate.framework/Libraries/SubstrateInjection.dylib
Waiting for sub-component to finish signing: /var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/tmpywg9go57/Payload/UTM.app/Frameworks/CydiaSubstrate.framework/Libraries/SubstrateBootstrap.dylib
Traceback (most recent call last):
File "/Users/runner/work/ios-signer-ci/ios-signer-ci/sign.py", line 388, in <module>
run()
File "/Users/runner/work/ios-signer-ci/ios-signer-ci/sign.py", line 337, in run
Signer(
File "/Users/runner/work/ios-signer-ci/ios-signer-ci/xsign.py", line 588, in sign
popen_check(pipe)
File "/Users/runner/work/ios-signer-ci/ios-signer-ci/xsign.py", line 134, in popen_check
raise Exception(data)
Exception: {'message': "['/usr/bin/codesign', '--continue', '-f', '--no-strict', '-s', 'Apple Development: ############# (XXXXXX)', '/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/tmpywg9go57/Payload/UTM.app/Frameworks/CydiaSubstrate.framework/Libraries/SubstrateBootstrap.dylib'] failed with status code 1", 'stdout': '', 'stderr': '/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/tmpywg9go57/Payload/UTM.app/Frameworks/CydiaSubstrate.framework/Libraries/SubstrateBootstrap.dylib: replacing existing signature\n/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/tmpywg9go57/Payload/UTM.app/Frameworks/CydiaSubstrate.framework/Libraries/SubstrateBootstrap.dylib: No such file or directory'}
==============================================
Uploading screenshot...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
16 1169k 0 0 16 191k 0 342k 0:00:03 --:--:-- 0:00:03 344k
100 1170k 0 133 100 1169k 121 1071k 0:00:01 0:00:01 --:--:-- 1075k
And the error from appdb is
Signing error: unable to sign, Application binary is broken