ESLint crash with prefer-object-spread

[nstepien]

Tell us about your environment

• ESLint Version: 5.2.0
• Node Version: v10.7.0
• npm Version: 6.1.0

What parser (default, Babel-ESLint, etc.) are you using?
I can reproduce this with the default parser, and with babel-eslint. I haven't tried other alternatives.

Please show your full configuration:

Configuration

{
  "root": true,
  "rules": {
    "prefer-object-spread": 1
  }
}

What did you do? Please include the actual source code causing the issue, as well as the command that you used to run ESLint.

Object.assign({
});

./node_modules/.bin/eslint src

What did you expect to happen?

.../src/test.js
1:1  warning  Use an object literal instead of `Object.assign`. eg: `{ foo: bar }`  prefer-object-spread

✖ 1 problem (0 errors, 1 warning)
  0 errors and 1 warning potentially fixable with the `--fix` option.

What actually happened? Please include the actual, raw output from ESLint.

Fix objects must not be overlapped in a report.
AssertionError [ERR_ASSERTION]: Fix objects must not be overlapped in a report.
    at mergeFixes (/mnt/c/test/node_modules/eslint/lib/report-translator.js:150:9)
    at normalizeFixes (/mnt/c/test/node_modules/eslint/lib/report-translator.js:180:16)
    at args (/mnt/c/test/node_modules/eslint/lib/report-translator.js:278:18)
    at Object.report (/mnt/c/test/node_modules/eslint/lib/linter.js:830:41)
    at Program (/mnt/c/test/node_modules/eslint/lib/rules/prefer-object-spread.js:249:33)
    at listeners.(anonymous function).forEach.listener (/mnt/c/test/node_modules/eslint/lib/util/safe-emitter.js:45:58)
    at Array.forEach (<anonymous>)
    at Object.emit (/mnt/c/test/node_modules/eslint/lib/util/safe-emitter.js:45:38)
    at NodeEventGenerator.applySelector (/mnt/c/test/node_modules/eslint/lib/util/node-event-generator.js:251:26)
    at NodeEventGenerator.applySelectors (/mnt/c/test/node_modules/eslint/lib/util/node-event-generator.js:280:22)

[aladdin-add]

thanks for the report, I can repro it!