Merge bitcoin/bitcoin#28253: test: display abrupt shutdown errors in console output

0f83ab407ec5aa0591c54c03bcf408c7f2f0a192 test: display abrupt shutdown errors in console output (furszy)

Pull request description:

  Making it easier to debug errors in the CI environment,
  particularly in scenarios where it's not immediately clear
  what happened nor which node crashed (or shutdown abruptly).

  A bit of context:
  Currently, the test framework redirects each node's stderr output
  stream to a different temporary file inside each node's data directory.
  While this is sufficient for storing the error, it isn't very helpful for
  understanding what happened just by reading the CI console output.

  Most of the time, reading the stderr file in the CI environment is not
  possible, because people don't have access to it.

  Testing Note:
  The displayed error difference can be observed by cherry-picking this
  commit https://github.com/furszy/bitcoin-core/commit/9cc5393c0f24c774b4a59706fc7c7873a59573e7 on top of this branch and running any
  functional test.

ACKs for top commit:
  maflcko:
    lgtm ACK 0f83ab407ec5aa0591c54c03bcf408c7f2f0a192
  theStack:
    ACK 0f83ab407ec5aa0591c54c03bcf408c7f2f0a192

Tree-SHA512: 83ce4d21d5316e8cb16a17d3fbe77b8649fced9e09410861d9674c233f6e9c34bcf573504e387e4f439c2841b2ee9855d0d35607fa13aa89eafe0080c45ee82d

0 files changed, 0 insertions, 0 deletions