At some point this has fixed:
$ ls -la /var/lib/juju/tools/3.0-beta1.1-ubuntu-amd64/jujud -rwxr-xr-x 1 ubuntu ubuntu 147664896 Jan 4 22:21 /var/lib/juju/tools/3.0-beta1.1-ubuntu-amd64/jujud
At some point this has fixed:
$ ls -la /var/lib/ juju/tools/ 3.0-beta1. 1-ubuntu- amd64/jujud juju/tools/ 3.0-beta1. 1-ubuntu- amd64/jujud
-rwxr-xr-x 1 ubuntu ubuntu 147664896 Jan 4 22:21 /var/lib/