open /dev/null or dup failed

[javahook]

• I was not able to find an open or closed issue matching what I'm seeing

Setup

• Which version of Git for Windows are you using? Is it 32-bit or 64-bit?

$ git --version --build-options

** insert your machine's response here **

• Which version of Windows are you running? Vista, 7, 8, 10? Is it 32-bit or 64-bit?

$ cmd.exe /c ver

** insert your machine's response here **

• What options did you set as part of the installation? Or did you choose the
  defaults?

# One of the following:
> type "C:\Program Files\Git\etc\install-options.txt"
> type "C:\Program Files (x86)\Git\etc\install-options.txt"
> type "%USERPROFILE%\AppData\Local\Programs\Git\etc\install-options.txt"
$ cat /etc/install-options.txt

** insert your machine's response here **

• Any other interesting things about your environment that might be related
  to the issue you're seeing?

** insert your response here **

Details

• Which terminal/shell are you running Git from? e.g Bash/CMD/PowerShell/other

** insert your response here **

• What commands did you run to trigger this issue? If you can provide a
  Minimal, Complete, and Verifiable example
  this will help us understand the issue.

** insert your commands here **

• What did you expect to occur after running these commands?

** insert here **

• What actually happened instead?

** insert here **

• If the problem was occurring with a specific repository, can you provide the
  URL to that repository to help us with testing?

** insert URL here **

[PhilipOakley]

@javahook , please complete the information template with the Git version, Windows Version, Install options, Command used, and any other information that may help.

Without it we are unable to even make a guess.

[dscho]

I will close this as invalid until the time when enough information is provided to make sense of the report.

[dscho]

Without it we are unable to even make a guess.

We are actually able to guess (but this is a poor use of our time): there are other tickets (with a lot more information in them) with the same symptom, and it seems that the NUL device driver is somehow disabled in those cases.