AppVeyor does not show package version used

My tests are failing. Presumably because of a dependency.
Now I can use the history on AppVeyor to find the latest working version of a package.
However, for some packages, like PyCall, I cannot find the version which was installed, see e.g. here

It just says ‘Building PyCall’ without denoting the version.
Is there any way I can find out the version which was used (except for using the date of the run and finding the commit corresponding to the date)?
Would it be meaningful to actually print the version in the ‘install log’ as it is done for other packages?

I turns out, that the version is not shown because I used #master of that package.