contrib: Fix capture_output in getcoins.py #26212

1. 
   willcl-ark commented at 12:21 pm on September 30, 2022: contributor

   Our minimum required Python version 3.6.12 does not support capture_output as a subprocess.run argument; this was added in python 3.7.

   We can emulate it by setting both stdout and stderr to subprocess.PIPE

2. contrib: Fix capture_output in getcoins.py

   Our required Python version 3.6.12 does not support `capture_output` as
   a subprocess.run argument; this was added in python 3.7.
   
   We can emulate it by setting stdout and stderr to subprocess.PIPE

   be59bd17ec
3. fanquake added the label Scripts and tools on Sep 30, 2022
4. 
   brunoerg commented at 6:53 pm on September 30, 2022: contributor

   Concept ACK

   Python 3.6: https://docs.python.org/3.6/library/subprocess.html#subprocess.run Python 3.7 (contains capture_output): https://docs.python.org/3.6/library/subprocess.html#subprocess.run

5. maflcko added this to the milestone 24.0 on Oct 2, 2022
6. maflcko added the label Needs backport (24.x) on Oct 2, 2022
7. maflcko merged this on Oct 2, 2022
8. maflcko closed this on Oct 2, 2022

   ---

9. willcl-ark deleted the branch on Oct 2, 2022
10. 
    maflcko commented at 3:18 pm on October 2, 2022: member

    Marked for backport and reverted in https://github.com/bitcoin/bitcoin/pull/26226
11. fanquake referenced this in commit 1db89aa9cc on Oct 2, 2022
12. fanquake removed the label Needs backport (24.x) on Oct 2, 2022
13. 
    fanquake commented at 3:42 pm on October 2, 2022: member

    Added to #26133 for backport to 24.x.
14. fanquake referenced this in commit 997faf6b6c on Oct 11, 2022
15. achow101 referenced this in commit 885366c67a on Oct 13, 2022
16. bitcoin locked this on Oct 13, 2023

Contributors
willcl-ark brunoerg maflcko fanquake

Labels
Scripts and tools

Milestone
24.0