--- /usr/share/debootstrap/functions	2017-04-22 05:41:10.000000000 +1200
+++ /usr/share/debootstrap/functions	2017-05-09 15:37:33.724671470 +1200
@@ -77,7 +77,7 @@
 	[ ! "$VERBOSE" ] && QSWITCH="-q"
 	local ret=0
 	if [ "$USE_DEBIANINSTALLER_INTERACTION" ] && [ "$PROGRESS_NEXT" ]; then
-		wget "$@" 2>&1 >/dev/null | $PKGDETAILS "WGET%" $PROGRESS_NOW $PROGRESS_NEXT $PROGRESS_END >&3
+		(( wget "$@" 2>&1 >/dev/null; echo "$?" >&4) | $PKGDETAILS "WGET%" $PROGRESS_NOW $PROGRESS_NEXT $PROGRESS_END >&3) 4>&1 | (read ret; exit $ret)
 		ret=$?
 	else
 		wget $QSWITCH "$@"