sdk_stages: Don't pass empty command in SDKTest
When creating the new-sdk-chroot, SDKTest runs a chroot command that
doesn't actually run a command. It relies on the side effect of
cros_sdk creating the chroot before running the non-existent command.
The empty command results in entering the chroot and running bash. On
the builders where stdin isn't attached to a terminal, bash immediately
exits and this succeeds. On local builds, this causes the tryjob to
hang inside the chroot because stdin is normally attached to a tty.
Instead of running no command, run /bin/true to get the same
chroot-creation effect without any dependence on stdin's status.
BUG=chromium:837330
TEST=cros tryjob --local chromiumos-sdk-tryjob
Change-Id: I835920a7bf66437cbab0d49e0162723114e894a8
Reviewed-on: https://chromium-review.googlesource.com/1071877
Commit-Ready: Benjamin Gordon <bmgordon@chromium.org>
Tested-by: Benjamin Gordon <bmgordon@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed
