Mention that apt must be updated

diff --git a/release.sh b/release.sh
index f5e0408950c115cf9cc5b7f60ce8704623497427..5fd3d7a4ee4ec31208a8b6b9a5bdc59cf04ebf8d 100755 (executable)
--- a/release.sh
+++ b/release.sh
@@ -65,7 +65,7 @@ check_build_deps() {
        grep -Eo 'librust-.*+.*-dev' | \
        { while read pkg; do
                if [ $(apt-cache showpkg "$pkg" | grep ^Package: | wc -l) = 0 ]; then
-                       echo >&2 "Build-Dependency not yet in debian: $pkg"
+                       echo >&2 "Build-Dependency not yet in debian: $pkg (don't forget to 'apt update')"
                        success=false
                fi
        done; $success; }