LDC 1.21 comes with a beta version of DUB ?

[Luis]

I'm trying to discover why a build only fails with LDC 1.21 32bit 
version, and I noticed that LDC comes with a old beta version of 
DUB :

https://ci.appveyor.com/project/Zardoz89/pijamas/build/job/nb74djdyol8cdce3

dub --version
DUB version 1.20.0-beta.2, built on Apr 23 2020
%DC% --version
LDC - the LLVM D compiler (1.21.0):
   based on DMD v2.091.1 and LLVM 10.0.0
   built with LDC - the LLVM D compiler (1.21.0)
   Default target: i686-pc-windows-msvc
   Host CPU: haswell
   http://dlang.org - http://wiki.dlang.org/LDC
...


Fails with :

dub test --compiler=ldc -v

Using dub registry url 'https://code.dlang.org/'
Refreshing local packages (refresh existing: true)...
Looking for local package map at 
C:\ProgramData\dub\packages\local-packages.json
Looking for local package map at 
C:\Users\appveyor\AppData\Local\dub\packages\local-packages.json
Looking for local package map at 
C:\projects\pijamas\.dub\packages\local-packages.json
Determined package version using GIT: pyjamas 
0.2.1+commit.12.g639c2ef
Refreshing local packages (refresh existing: false)...
Looking for local package map at 
C:\ProgramData\dub\packages\local-packages.json
Looking for local package map at 
C:\Users\appveyor\AppData\Local\dub\packages\local-packages.json
Looking for local package map at 
C:\projects\pijamas\.dub\packages\local-packages.json
   Version selection for dependency silly (silly) of pyjamas is 
missing.
   Missing dependency silly ~>1.0.2 of pyjamas
Refreshing local packages (refresh existing: false)...
Looking for local package map at 
C:\ProgramData\dub\packages\local-packages.json
Looking for local package map at 
C:\Users\appveyor\AppData\Local\dub\packages\local-packages.json
Looking for local package map at 
C:\projects\pijamas\.dub\packages\local-packages.json
   Version selection for dependency silly (silly) of pyjamas is 
missing.
   Missing dependency silly ~>1.0.2 of pyjamas
Checking for missing dependencies.
Search for versions of silly (1 package suppliers)
Command exited with code -1073741819

Any idea of what is happening here ?