expo build:ios fails with "killed" and no error message

Hello - I am running expo build:ios in my project. After it begins the building javascript step, it always gets to 6% and then says “Killed” with no other error message. Can someone please help me try to debug this?

I previously got a javascript heap out of memory error but resolved with export node_options max old space size 8192, so not sure if it is a space issue. FWIW, I was able to successfully build a blank test app. I can also run expo-cli start --tunnel and the app works perfectly on my device for testing.

This is what it looks like in my command line (not sure why it says “Android Bundling JavaScript” when running build:ios)

Building optimized bundles and generating sourcemaps…
Starting Metro Bundler
Android Bundling JavaScript [== ] 6%Killed

This is my app.json:

“expo”: {
“name”: “locctocc”,
“slug”: “locctocc”,
“version”: “1.0.0”,
“orientation”: “portrait”,
“icon”: “./assets/locctocclogo.png”,
“splash”: {
“image”: “./assets/splash.png”,
“resizeMode”: “contain”,
“backgroundColor”: “#ffffff
“updates”: {
“fallbackToCacheTimeout”: 0
“assetBundlePatterns”: [
“ios”: {
“supportsTablet”: true,
“bundleIdentifier”: “com.psodor01.locctocc”
“android”: {
“adaptiveIcon”: {
“foregroundImage”: “./assets/locctocclogo.png”,
“backgroundColor”: “#FFFFFF
“web”: {
“favicon”: “./assets/favicon.png”

And this is my Expo Diagnostics result:
Expo CLI 4.11.0 environment info:
OS: Linux 4.4 Ubuntu 16.04.7 LTS (Xenial Xerus)
Shell: 4.3.48 - /bin/bash
Node: 15.6.0 - /usr/local/bin/node
Yarn: 1.22.10 - /usr/local/bin/yarn
npm: 7.6.0 - /usr/local/bin/npm
expo: ^42.0.0 => 42.0.3
react: 16.13.1 => 16.13.1
react-dom: 16.13.1 => 16.13.1
react-native: 0.63.4 => 0.63.4
react-native-web: ^0.17.1 => 0.17.1
expo-cli: 4.11.0
Expo Workflow: managed

I was able to resolve this by following the same steps on another computer, so it did seem to be a space issue. Leaving this as open since it would be nice to have a more helpful error when the bundling fails instead of just returning “Killed”.