Access is denied error on juliaup add on Windows

[visr]

Due to my antivirus real time protection juliaup add often fails. It looks like this:

❯ juliaup add pr56708
Installing Julia pr56708-win64
Error: Access is denied. (os error 5)

(7 more unsuccesful attempts)

❯ juliaup add pr56708
Installing Julia pr56708-win64

In my antivirus I see it is scanning some of the 5000 files in .julia/juliaup/julia-temp-*. It fails after successfully downloading the binary, and after each such error it leaves a complete julia-temp-* folder behind, which also doesn't get removed with juliaup gc (I guess it should?).

It seems the operation that is failing is renaming the directory to (in this case) julia-pr56708.

Pkg gave me and others similar trouble, but that has been addressed by JuliaLang/Pkg.jl#4001. Perhaps a similar strategy would be good for juliaup.