Optimize some CI stuff (#1880)

* CI Optimizations

ci/test-checks.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+set -e
+
+cd "$(dirname "$0")/.."
+
+ci/version-check.sh stable
+export RUST_BACKTRACE=1
+export RUSTFLAGS="-D warnings"
+
+_() {
+  echo "--- $*"
+  "$@"
+}
+
+_ cargo fmt -- --check
+_ cargo clippy -- --version
+_ cargo clippy -- --deny=warnings
+
+_ ci/audit.sh