Comment 3 for bug 1732997

here what i found in the log
this error is holding up the building of artful and bionic for the raspberry pi2
here is a link to my project
https://sourceforge.net/projects/ultimateedition-ports/files/PiFlavourMaker/

Selecting previously unselected package bash.
dpkg: regarding .../bash_4.4-5ubuntu1_armhf.deb containing bash, pre-dependency problem:
 bash pre-depends on dash (>= 0.5.5.1-2.2)
  dash is not installed.

dpkg: warning: ignoring pre-dependency problem!
dpkg: regarding .../bash_4.4-5ubuntu1_armhf.deb containing bash, pre-dependency problem:
 bash pre-depends on libtinfo5 (>= 6)
  libtinfo5 is not installed.

dpkg: warning: ignoring pre-dependency problem!
Preparing to unpack .../bash_4.4-5ubuntu1_armhf.deb ...
preinst: ../sysdeps/unix/sysv/linux/spawni.c:368: __spawnix: Assertion `ec >= 0' failed.
qemu: uncaught target signal 6 (Aborted) - core dumped
dpkg: error processing archive /var/cache/apt/archives/bash_4.4-5ubuntu1_armhf.deb (--unpack):
 new bash package pre-installation script subprocess was killed by signal (Aborted), core dumped