Source: qtcreator Version: 4.5.2-2 Severity: serious llvm 3.9 is deprecated and in the process of being removed for stretch, see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=873408
Please update your package to use the latest, recommended version which is llvm6.0. Thanks, Michael -- System Information: Debian Release: buster/sid APT prefers unstable APT policy: (500, 'unstable'), (200, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.15.0-1-amd64 (SMP w/4 CPU cores) Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE=de_DE.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) -- no debconf information