Add rustc/cargo version check

ci/test-large-network.sh

@@ -3,10 +3,17 @@
 here=$(dirname "$0")
 cd "$here"/..
 
+if ! ci/version-check.sh stable; then
+  # This job doesn't run within a container, try once to upgrade tooling on a
+  # version check failure
+  rustup install stable
+  ci/version-check.sh stable
+fi
+export RUST_BACKTRACE=1
+
 ./fetch-perf-libs.sh
 export LD_LIBRARY_PATH+=:$PWD
 
-export RUST_BACKTRACE=1
 export RUST_LOG=multinode=info
 
 set -x