This bug was fixed in the package snapcraft - 2.34

---------------
snapcraft (2.34) xenial; urgency=medium

  [ Sergio Schvezov ]
  * core: cache FileBase entries when a checksum is provided (#1433)
  * cli: better error message for missing mksquashfs (#1481)
  * core: improve source caching logic (#1486)
  * ci: speedup the CLA check (#1503)
  * ci: disable the travis deploy stage for docs (#1510)
  * vcs: ignore .vscode project settings (#1517)
  * docs: add github processed templates (#1514)
  * tour: remove the tour assets (#1520)
  * project: introduce build-snaps (#1518)
  * tests: update the meson test to latest meson requirements (#1532)
  * jhbuild plugin: remove dependency on pkgconf (#1535)
  * nodejs plugin: add prefix --prefix to global pkg add (#1539)
  * New upstream release (LP: #1715399)

  [ Christian Dywan ]
  * lxd: clean with no parts should only delete (#1434)
  * lxd: inject snapcraft and core snaps into the container (#1364)
  * lxd: wait on lock files before running apt commands (#1435)
  * kbuild plugin: support Makefiles without an install target (#1432)
  * kbuild plugin: move over the cross-compiling logic from the kernel plugin (#1417)
  * lxd: path cannot have extra forward slashes (#1483)
  * lxd: always remove existing device for project folder (#1488)
  * lifecycle: outdated step should raise SnapcraftError (#1513)
  * errors: introduce ContainerError (#1505)
  * lxd: LXD not installed when using remote (#1516)
  * lxd: use a unique temporary folder (#1519)

  [ Leo Arias ]
  * recording: record the original snapcraft.yaml (#1407)
  * ci: skip the CLA check for pull requests from the bot (#1482)
  * docs: fix typo in plugin help (#1496)
  * python plugin: record manifest (#1487)
  * tests: use assertThat instead of assertEqual (#1501)
  * python plugin: always record constraints and requirements contents (#1521)
  * demos: update the name of the remote mqtt part (#1533)

  [ Kyle Fazzari ]
  * options: properly handle missing compiler prefix (#1425)
  * catkin plugin: include-roscore is a boolean (#1472)
  * catkin plugin: default to release build (#1470)
  * catkin plugin: rosinstall-files is a pull property (#1473)
  * catkin plugin: support passing args to cmake (#1471)
  * catkin plugin: extract rosdep into new package (#1392)
  * cli: add global exception handler
  * cli: stop handling exceptions in lifecycle
  * plugins: use exceptions based on SnapcraftError
  * cli: stop handling exceptions in parts
  * cli: stop handling exceptions in assertions
  * cli: stop handling exceptions in store
  * many: use exceptions based on SnapcraftError
  * rosdep: add support for multiple dependency types (#1479)
  * errors: use function for exit code (#1491)
  * cli: don't raise from excepthook (#1495)
  * repo: make errors based on SnapcraftError (#1499)
  * project loader: refactor into package (#1504)
  * grammar: move into project_loader (#1500)
  * many: simplify plugin loading (#1507)
  * schema: version should have a max length of 32 (#1508)
  * project_loader: process stage package grammar (#1509)
  * project_loader: support grammar on build-packages (#1511)

  [ Alex T Newman ]
  * windows: add cx_Freeze options targeting bin/snapcraft (#1478)

  [ Michael Vogt ]
  * meta: add `base` as a type and top level property (#1419)

  [ Adam Collard ]
  * ant plugin, gradle plugin: add support for authenticated proxies (#1490)

  [ fmanea ]
  * demos: remove the unnecessary wrapper from the java demo (#1494)

  [ Neal Gompa (ニール・ゴンパ) ]
  * repo: use os-release(5) to detect supported Linux distributions (#1527)

  [ Daniel Llewellyn ]
  * jhbuild plugin: new plugin (#1298)
  * jhbuild plugin: fix UnboundLocalError for chmod_path (#1534)

 -- Sergio Schvezov <email address hidden>  Wed, 06 Sep 2017 14:04:53 +0000