Confusing error message: The 'stage' step for 'part-a' needs to be run again, but 'part-b' depends on it

I suspect the command recommendation is wrong as it doesn’t resolve the problem, can anyone look at it?

ubuntu@ubuntu-16-04-ssd:~/poedit/snappy$ snapcraft
Skipping pull boostlib (already ran)
Skipping build boostlib (already ran)
Failed to reuse files from previous build: The 'stage' step of 'boostlib' is out of date:                                                                     
The 'stage' step for 'boostlib' needs to be run again, but 'poedit' depends on it.                                                                            
To continue, clean that part's 'stage' step, run `snapcraft clean poedit -s stage`.                                                                           
ubuntu@ubuntu-16-04-ssd:~/poedit/snappy$ snapcraft clean poedit -s stage
Cleaning priming area for poedit 
Cleaning staging area for poedit 
ubuntu@ubuntu-16-04-ssd:~/poedit/snappy$ snapcraft
Skipping pull desktop-gtk3 (already ran)
Skipping build desktop-gtk3 (already ran)
Skipping stage desktop-gtk3 (already ran)
Skipping prime desktop-gtk3 (already ran)
Skipping pull boostlib (already ran)
Skipping build boostlib (already ran)
Failed to reuse files from previous build: The 'stage' step of 'boostlib' is out of date:                                                                     
The 'stage' step for 'boostlib' needs to be run again, but 'poedit' depends on it.                                                                            
To continue, clean that part's 'stage' step, run `snapcraft clean poedit -s stage`.                                                                           
ubuntu@ubuntu-16-04-ssd:~/poedit/snappy$ napcraft clean poedit -s stage^C
ubuntu@ubuntu-16-04-ssd:~/poedit/snappy$ snapcraft clean boostlib -s stage     
Skipping cleaning priming area for poedit (already clean)
Skipping cleaning staging area for poedit (already clean)
Cleaning priming area for boostlib 
Cleaning staging area for boostlib 
ubuntu@ubuntu-16-04-ssd:~/poedit/snappy$ snapcraft
Skipping pull wxwidgets (already ran)
Skipping build wxwidgets (already ran)
Failed to reuse files from previous build: The 'stage' step of 'wxwidgets' is out of date:                                                                    
The 'stage' step for 'wxwidgets' needs to be run again, but 'poedit' depends on it.                                                                           
To continue, clean that part's 'stage' step, run `snapcraft clean poedit -s stage`.                                                                           
ubuntu@ubuntu-16-04-ssd:~/poedit/snappy$ snapcraft clean wxwidgets -s stage    
Skipping cleaning priming area for poedit (already clean)
Skipping cleaning staging area for poedit (already clean)
Cleaning priming area for wxwidgets 
Cleaning staging area for wxwidgets 
ubuntu@ubuntu-16-04-ssd:~/poedit/snappy$ snapcraft # runs successfully