[NTG-context] Upgrade to 2015.11.19 breaks OTF reader?

[Thangalin]

$ locate -i sourcesanspro
/home/.../luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/fonts/otl/sourcesanspro-regular.tma
/home/.../luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/fonts/otl/sourcesanspro-regular.tmc
/usr/local/share/fonts/google/s/SourceSansPro-Black.ttf
/usr/local/share/fonts/google/s/SourceSansPro-BlackItalic.ttf
/usr/local/share/fonts/google/s/SourceSansPro-Bold.ttf
/usr/local/share/fonts/google/s/SourceSansPro-BoldItalic.ttf
/usr/local/share/fonts/google/s/SourceSansPro-ExtraLight.ttf
/usr/local/share/fonts/google/s/SourceSansPro-ExtraLightItalic.ttf
/usr/local/share/fonts/google/s/SourceSansPro-Italic.ttf
/usr/local/share/fonts/google/s/SourceSansPro-Light.ttf
/usr/local/share/fonts/google/s/SourceSansPro-LightItalic.ttf
/usr/local/share/fonts/google/s/SourceSansPro-Regular.ttf
/usr/local/share/fonts/google/s/SourceSansPro-Semibold.ttf
/usr/local/share/fonts/google/s/SourceSansPro-SemiboldItalic.ttf

$ echo $OSFONTDIR
/home/.../.fonts:/usr/share/fonts:/usr/local/share/fonts:/usr/share/texmf/fonts/opentype:/usr/share/fonts/type1/gsfonts

The font is there, it's in the OSFONTDIR path.

Why isn't it found?

I've tried

   mtxrun --script fonts --reload

   luatools --generate

   context --reload

   context --generate

Further:

$ mtxrun --script fonts --list --all --pattern=sourcesans

sourcesanspro                   sourcesansproregular
/usr/local/share/fonts/google/s/SourceSansPro-Regular.ttf
sourcesansproblack              sourcesansproblack
/usr/local/share/fonts/google/s/SourceSansPro-Black.ttf
sourcesansproblackit            sourcesansproblackit
/usr/local/share/fonts/google/s/SourceSansPro-BlackItalic.ttf
sourcesansproblackitalic        sourcesansproblackit
/usr/local/share/fonts/google/s/SourceSansPro-BlackItalic.ttf
sourcesansprobold               sourcesansprobold
/usr/local/share/fonts/google/s/SourceSansPro-Bold.ttf
sourcesansproboldit             sourcesansproboldit
/usr/local/share/fonts/google/s/SourceSansPro-BoldItalic.ttf
sourcesansprobolditalic         sourcesansproboldit
/usr/local/share/fonts/google/s/SourceSansPro-BoldItalic.ttf
sourcesansproextralight         sourcesansproextralight
/usr/local/share/fonts/google/s/SourceSansPro-ExtraLight.ttf
sourcesansproextralightit       sourcesansproextralightit
/usr/local/share/fonts/google/s/SourceSansPro-ExtraLightItalic.ttf
sourcesansproextralightitalic   sourcesansproextralightit
/usr/local/share/fonts/google/s/SourceSansPro-ExtraLightItalic.ttf
sourcesansproit                 sourcesansproit
/usr/local/share/fonts/google/s/SourceSansPro-Italic.ttf
sourcesansproitalic             sourcesansproit
/usr/local/share/fonts/google/s/SourceSansPro-Italic.ttf
sourcesansprolight              sourcesansprolight
/usr/local/share/fonts/google/s/SourceSansPro-Light.ttf
sourcesansprolightit            sourcesansprolightit
/usr/local/share/fonts/google/s/SourceSansPro-LightItalic.ttf
sourcesansprolightitalic        sourcesansprolightit
/usr/local/share/fonts/google/s/SourceSansPro-LightItalic.ttf
sourcesanspronormal             sourcesansproregular
/usr/local/share/fonts/google/s/SourceSansPro-Regular.ttf
sourcesansproregular            sourcesansproregular
/usr/local/share/fonts/google/s/SourceSansPro-Regular.ttf
sourcesansprosemibold           sourcesansprosemibold
/usr/local/share/fonts/google/s/SourceSansPro-Semibold.ttf
sourcesansprosemiboldit         sourcesansprosemiboldit
/usr/local/share/fonts/google/s/SourceSansPro-SemiboldItalic.ttf
sourcesansprosemibolditalic     sourcesansprosemiboldit
/usr/local/share/fonts/google/s/SourceSansPro-SemiboldItalic.ttf

Still not found.