type 'depset' is not iterable. Use the to_list() method to get a list

[javier-b-perez]

bazel --version
bazel 0.28.0

I see this error when I try to use push-build (from k8s master):

ERROR: /home/jbperez/go/src/k8s.io/kubernetes/BUILD.bazel:39:1: in gcs_upload rule //:push-build:
Traceback (most recent call last):
File "/home/jbperez/go/src/k8s.io/kubernetes/BUILD.bazel", line 39
gcs_upload(name = 'push-build')
File "/home/jbperez/.cache/bazel/_bazel_jbperez/770a5393ec0b756d4b1d36719db44027/external/io_k8s_repo_infra/defs/build.bzl", line 20, in _gcs_upload_impl
for f in t.files: ...
type 'depset' is not iterable. Use the to_list() method to get a list. Use --incompatible_depset_is_not_iterable=false to temporarily disable this check.
ERROR: Analysis of target '//:push-build' failed; build aborted: Analysis of target '//:push-build' failed; build aborted

[javier-b-perez]

This is not the end:
ctx.file_action(output = ctx.outputs.targets, cont...))
Use ctx.actions.write instead of ctx.file_action.
Use --incompatible_new_actions_api=false to temporarily disable this check.

[javier-b-perez]

INFO: Build completed successfully, 869 total actions
Traceback (most recent call last):
File "../io_k8s_repo_infra/defs/gcs_uploader", line 340, in
Main()
File "../io_k8s_repo_infra/defs/gcs_uploader", line 330, in Main
os.execv(args[0], args)
OSError: [Errno 2] No such file or directory: '/home/jbperez/.cache/bazel/_bazel_jbperez/770a5393ec0b756d4b1d36719db44027/execroot/io_k8s_kubernetes/bazel-out/k8-fastbuild/bin/push-build.runfiles/bazel_tools/tools/python/py3wrapper.sh'