Test suite fails (if Future::XS is installed?)

[eserte]

The test suite fails on some of my smoker systems:

Not a HASH reference at /home/cpansand/.cpan/build/2024102713/Device-FTDI-0.14-0/blib/lib/Device/FTDI/MPSSE.pm line 711.
t/mpsse.t .....
Dubious, test returned 255 (wstat 65280, 0xff00)
No subtests run
t/pod.t ....... ok
Not a HASH reference at /home/cpansand/.cpan/build/2024102713/Device-FTDI-0.14-0/blib/lib/Device/FTDI/MPSSE.pm line 711.
t/spi.t .......
Dubious, test returned 255 (wstat 65280, 0xff00)
No subtests run

This seems to happen if Future::XS is installed.