Steps to reproduce: Make a directory and save attached snapcraft.yaml in it. snapcraft snapcraft clean pulseview Expected result: All build/stage/prime etc artifacts for the pulseview part are deleted. Actual result: al@al-desktop:~/Source/sigrok-snap-test$ snapcraft clean pulseview -s prime "grade" property not specified: defaulting to "stable" Cleaning priming area for pulseview [Errno 2] No such file or directory: '/home/al/Source/sigrok-snap-test/prime/meta/gui/pulseview.desktop' ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: snapcraft 2.29 ProcVersionSignature: Ubuntu 4.4.0-77.98-generic 4.4.59 Uname: Linux 4.4.0-77-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 CurrentDesktop: XFCE Date: Thu May 11 13:47:09 2017 InstallationDate: Installed on 2015-07-12 (669 days ago) InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1) PackageArchitecture: all SourcePackage: snapcraft UpgradeStatus: Upgraded to xenial on 2016-06-30 (315 days ago)