[racket] compiling git head fails with compatibility-test error

Trying to compile head and I get the error below. I originally thought
it was due to one of my external pkgs but I've removed them one-by-one
until I have nothing installed, and I am still getting the error. I've
searched the mailing list and the docs and have not been able to find
any additional information either. Anyone have any insights?

(This is on a Windows 7 machine if that matters.)

raco setup: --- checking package dependencies ---
check-dependencies: package not installed: "compatibility-test"
  context...:
   C:\pltpkg\racket\collects\setup\private\pkg-deps.rkt:77:2: get-immediate-pkg-
info!
   C:\pltpkg\racket\collects\setup\private\pkg-deps.rkt:143:2: register-pkg!
   C:\pltpkg\racket\collects\setup\private\pkg-deps.rkt:154:8: for-loop
   C:\pltpkg\racket\collects\setup\private\pkg-deps.rkt:143:2: register-pkg!
   C:\pltpkg\racket\collects\setup\private\pkg-deps.rkt:143:2: register-pkg!
   C:\pltpkg\racket\collects\setup\private\pkg-deps.rkt:355:2: for-loop
   C:\pltpkg\racket\collects\setup\private\pkg-deps.rkt:23:0: check-package-depe
ndencies
   C:\pltpkg\racket\collects\setup\setup-core.rkt:59:0: setup-core
   C:\pltpkg\racket\collects\setup\setup-go.rkt: [running body]
   C:\pltpkg\racket\collects\setup\main.rkt: [running body]
   C:\pltpkg\racket\collects\raco\main.rkt: [running body]