There is currently an Heisenbug in Github CI where dub fails to run the program.
E.g. we see the following in the logs:
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Performing "debug" build using ldc2 for x86_64.
dubtest1531 ~master: building configuration "application"...
Linking...
Running ../../../../../tmp/dubtest1531_2enU78/dubtest1531
Failed to execute program (No such file or directory)
[ERROR] -e:79 Did not pass with ldc="<=1.23.0"
[ERROR] Script failure.
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This works around said bug by only building the package,
but not running it.