When after doing a very lengthy vcpkg install qwt:x86-windows --debug job,
which involves building Qt5 itself, vcpkg exits with this message:

Installing package qwt[core]:x86-windows...
Installing package qwt[core]:x86-windows... done
Elapsed time for package qwt:x86-windows: 2.188 min

Total elapsed time: 1.478 h

[DEBUG] vcpkg/install.cpp(1104)
[DEBUG] Exiting after -2147483648 us (-2147483648 us)

1 hour 30 minutes is approx. 5 400 000 000 us. I assume some signed overflow
is going on here to show -2 147 483 648 us.