Fixes for local sim on macOS [skip ci]

scripts/launch_local_testnet.sh

@@ -175,11 +175,11 @@ if [[ $USE_GANACHE == "0" ]]; then
 else
 	make deposit_contract
 
-  echo "Launching ganache"
+	echo "Launching ganache"
 	ganache-cli --blockTime 17 --gasLimit 100000000 -e 100000 --verbose > "${DATA_DIR}/log_ganache.txt" 2>&1 &
 	PIDS="${PIDS},$!"
 
-  echo "Deploying deposit contract"
+	echo "Deploying deposit contract"
 	WEB3_ARG="--web3-url=ws://localhost:8545"
 	DEPOSIT_CONTRACT_ADDRESS=$(./build/deposit_contract deploy $WEB3_ARG)
 	DEPOSIT_CONTRACT_ARG="--deposit-contract=$DEPOSIT_CONTRACT_ADDRESS"
@@ -202,7 +202,8 @@ fi
 ./scripts/make_prometheus_config.sh \
 		--nodes ${NUM_NODES} \
 		--base-metrics-port ${BASE_METRICS_PORT} \
-		--config-file "${DATA_DIR}/prometheus.yml"
+		--config-file "${DATA_DIR}/prometheus.yml" || true # TODO: this currently fails on macOS,
+																											 # but it can be considered non-critical
 
 # Kill child processes on Ctrl-C/SIGTERM/exit, passing the PID of this shell
 # instance as the parent and the target process name as a pattern to the

tests/simulation/start.sh

@@ -67,9 +67,10 @@ fi
 
 mkdir -p "${METRICS_DIR}"
 ./scripts/make_prometheus_config.sh \
-	--nodes ${TOTAL_NODES} \
-	--base-metrics-port ${BASE_METRICS_PORT} \
-	--config-file "${METRICS_DIR}/prometheus.yml"
+  --nodes ${TOTAL_NODES} \
+  --base-metrics-port ${BASE_METRICS_PORT} \
+  --config-file "${METRICS_DIR}/prometheus.yml" || true # TODO: this currently fails on macOS,
+                                                        # but it can be considered non-critical
 
 COMMANDS=()
 
@@ -87,7 +88,7 @@ if [[ "$USE_PROMETHEUS" == "yes" ]]; then
     rm -rf "${METRICS_DIR}/data"
     mkdir -p "${METRICS_DIR}/data"
     # TODO: Prometheus is not shut down properly on tmux kill-session
-    killall prometheus
+    killall prometheus > /dev/null || true
     PROMETHEUS_FLAGS="--config.file=./prometheus.yml --storage.tsdb.path=./data"
     $TMUX_CMD new-window -d -t $TMUX_SESSION_NAME -n "$PROMETHEUS_CMD" "cd '$METRICS_DIR' && $PROMETHEUS_CMD $PROMETHEUS_FLAGS"
   else