Mount /run and /run/shm in chroots.

build/install-chroot.sh

Index: build/install-chroot.sh
diff --git a/build/install-chroot.sh b/build/install-chroot.sh
index af85fb1f3bedfa68c7bf3bbfceec006ffb4095fc..e49726d599720a9fb8db6b3bc67e8220f7ef8486 100755
--- a/build/install-chroot.sh
+++ b/build/install-chroot.sh
@@ -392,12 +392,16 @@ if [ -d /media ] &&
     sudo sh -c 'cat >>/etc/schroot/mount-'"${target}"
 fi
 
-# Share /dev/shm and possibly /run/shm
+# Share /dev/shm, /run and /run/shm.
 grep -qs '^/dev/shm' /etc/schroot/mount-"${target}" ||
   echo '/dev/shm /dev/shm none rw,bind 0 0' |
     sudo sh -c 'cat >>/etc/schroot/mount-'"${target}"
-if [ -d "/var/lib/chroot/${target}/run" ] &&
-   ! grep -qs '^/run/shm' /etc/schroot/mount-"${target}"; then
+if [ ! -d "/var/lib/chroot/${target}/run" ] &&
+   ! grep -qs '^/run' /etc/schroot/mount-"${target}"; then
+  echo '/run /run none rw,bind 0 0' |
+    sudo sh -c 'cat >>/etc/schroot/mount-'"${target}"
+fi
+if ! grep -qs '^/run/shm' /etc/schroot/mount-"${target}"; then
   { [ -d /run ] && echo '/run/shm /run/shm none rw,bind 0 0' ||
                    echo '/dev/shm /run/shm none rw,bind 0 0'; } |
     sudo sh -c 'cat >>/etc/schroot/mount-'"${target}"