heroku: Install linux-headers-4.8.0-49-generic: Remove linux-headers-4.8.0-49: Remove linux-headers-4.8.0-51-generic: Remove linux-headers-4.8.0-51: Remove linux-headers-4.8.0-52-generic: Remove linux-headers-4.8.0-52: Remove linux-image-extra-4.8.0-49-generic: Remove linux-image-4.8.0-49-generic: Remove linux-image-extra-4.8.0-51-generic: Remove linux-image-4.8.0-51-generic: Remove linux-image-extra-4.8.0-52-generic: Remove linux-image-4.8.0-52-generic: Remove libgnutls-openssl27: Configure heroku: Configure NULL: ConfigurePending