Basic example fails

[purefan]

Hello,

Taking the first example ("Basic") from the Usage section in the Readme.md file fails:

steps:
- uses: actions/checkout@v2
- uses: actions/setup-node@v1
  with:
    node-version: '10.x'
- run: npm install
- run: npm test

I am running this locally with act but I discarded it being a problem in act by running the yarn step instead of setup-node and it worked.

The actual output is this:

[CI/unit-test] Extracting content from '/tmp/act064769060' to '/actions/'
[CI/unit-test] Exec command '[node /actions/actions-setup-node@v1/dist/index.js]'
[CI/unit-test] 💬 ::debug::isExplicit:
[CI/unit-test] 💬 ::debug::explicit? false
[CI/unit-test] 💬 ::debug::evaluating 0 versions
[CI/unit-test] 💬 ::debug::match not found
[CI/unit-test] 💬 ::debug::evaluating 381 versions
[CI/unit-test] 💬 ::debug::matched: v12.16.1
[CI/unit-test] 💬 ::debug::isExplicit: 12.16.1
[CI/unit-test] 💬 ::debug::explicit? true
[CI/unit-test] 💬 ::debug::checking cache: /opt/hostedtoolcache/node/12.16.1/x64
[CI/unit-test] 💬 ::debug::not found
[CI/unit-test] ❗ ::error::Expected RUNNER_TEMP to be defined
[CI/unit-test] ❌ Failure - actions/setup-node@v1
DEBU[0010] exit with FAILURE: 1
DEBU[0010] exit with FAILURE: 1
DEBU[0010] exit with FAILURE: 1
Error: exit with FAILURE: 1

This line of code seems relevant

My jobs section looks like this:

jobs:
  unittest:
    runs-on: ubuntu-18.04
    steps:
    - uses: actions/checkout@v2
    - uses: actions/setup-node@v1
      with:
        node-version: '12.x'
    - run: npm install
    - run: npm test