removing musl aarch64, but don't understand why it fails

pyproject.toml

@@ -136,7 +136,7 @@ atomic = true
 #src_paths=isort,test
 
 [tool.cibuildwheel]
-skip = ["pp*", "cp36-*", "cp37-*", "cp38-*", "*-win32", "*-win_arm64"] #, "*-musllinux*"]
+skip = ["pp*", "cp36-*", "cp37-*", "cp38-*", "*-win32", "*-win_arm64", "*-musllinux_aarch64"]
 build-frontend = { name = "build", args = ["-w","-n"] }
 before-build = "pip install setuptools cmake numpy pyzmq cmake-build-extension wheel"
 build-verbosity = "3"