Pandoc install failure not shown as failure

[hadley]

In https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true, I see:

Mar  1 13:58:55  installer[[9](https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true#step:3:9)09] <Critical>: Error parsing distribution script from data
9
installer: Error - the package path specified was invalid: '/Users/runner/work/_temp/pandoc-2.14.2-macOS.pkg'.
[10](https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true#step:3:10)
(node:900) UnhandledPromiseRejectionWarning: Error: The process 'sudo' failed with exit code 1
[11](https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true#step:3:11)
    at ExecState._setResult (/Users/runner/work/_actions/r-lib/actions/v2/setup-pandoc/node_modules/@actions/exec/lib/toolrunner.js:548:25)
[12](https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true#step:3:12)
    at ExecState.CheckComplete (/Users/runner/work/_actions/r-lib/actions/v2/setup-pandoc/node_modules/@actions/exec/lib/toolrunner.js:531:18)
[13](https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true#step:3:13)
    at ChildProcess.<anonymous> (/Users/runner/work/_actions/r-lib/actions/v2/setup-pandoc/node_modules/@actions/exec/lib/toolrunner.js:431:27)
[14](https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true#step:3:14)
    at ChildProcess.emit (events.js:210:5)
[15](https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true#step:3:15)
    at maybeClose (internal/child_process.js:1021:[16](https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true#step:3:16))
16
    at Socket.<anonymous> (internal/child_process.js:430:11)
[17](https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true#step:3:17)
    at Socket.emit (events.js:210:5)
[18](https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true#step:3:18)
    at Pipe.<anonymous> (net.js:659:12)
[19](https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true#step:3:19)
(node:900) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
[20](https://github.com/tidyverse/haven/runs/5376303481?check_suite_focus=true#step:3:20)
(node:900) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

But the step itself doesn't show as a failure.

[gaborcsardi]

This is not in v2 yet. Soon.

[github-actions]

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