Electron load fail on `session.on('will-download')`

electron-dl-fail.js

var app = require('electron').app;
var BrowserWindow = require('electron').BrowserWindow;

app.on('ready', function() {
  console.log('ready!');
  win = new BrowserWindow({});

  win.webContents.on('did-fail-load', (event, code, detail, failedUrl, isMainFrame) => {
    console.log(`fail: ${code} ${detail} ${failedUrl}`);
  });

  win.webContents.on('did-finish-load', () => {
    console.log('did-finish-load');
  });

  win.webContents.on('did-get-response-details', (event, status, newUrl, oldUrl, statusCode, method, referrer, headers, resourceType) => {
    console.log(`did-get-response-details ${statusCode}`);
  });

  win.webContents.on('did-get-redirect-request', (event, oldUrl, newUrl, isMainFrame, httpResponseCode, requestMethod, referrer, headers) => {
    console.log(`did-get-redirect-request ${oldUrl} ${newUrl} ${httpResponseCode}`);
  });

  win.webContents.session.on('will-download', (event, downloadItem, webContents) => {
    downloadItem.setSavePath(require('path').join(__dirname, downloadItem.getFilename()));
    downloadItem.on('done', (event, state) => {
      console.log(`${downloadItem.getFilename()} done with state ${state}`);
      app.exit(0);
    });
    console.log(`will-download ${downloadItem.getFilename()}`);
  });

  console.log('loading url');
  win.webContents.loadURL('https://codeload.github.com/electron/electron/zip/master');
});