Only display xdist warning in the main process.

[thomasbbrunner]

Currently the plugin will log a warning message for each xdist process. These changes prevent this by only logging in the main process.

This behavior was introduced in my earlier MR: #294

Sorry about this!

[codecov]

Codecov Report

❌ Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.13%. Comparing base (b857483) to head (21fd596).

Files with missing lines	Patch %	Lines
src/pytest_benchmark/session.py	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #296      +/-   ##
==========================================
- Coverage   90.46%   90.13%   -0.34%     
==========================================
  Files          29       29              
  Lines        2938     2939       +1     
  Branches      318      319       +1     
==========================================
- Hits         2658     2649       -9     
- Misses        206      215       +9     
- Partials       74       75       +1     

Flag	Coverage Δ
py310-pytest84-nodist-cover (macos/arm64)	85.98% <33.33%> (-0.03%)	⬇️
py310-pytest84-nodist-cover (ubuntu/x64)	86.32% <33.33%> (+<0.01%)	⬆️
py310-pytest84-nodist-cover (windows/x64)	85.74% <33.33%> (-0.03%)	⬇️
py310-pytest84-xdist-cover (macos/arm64)	?
py310-pytest84-xdist-cover (ubuntu/x64)	?
py310-pytest84-xdist-cover (windows/x64)	?
py310-pytest90-nodist-cover (macos/arm64)	85.94% <33.33%> (-0.03%)	⬇️
py310-pytest90-nodist-cover (ubuntu/x64)	86.49% <33.33%> (+0.20%)	⬆️
py310-pytest90-nodist-cover (windows/x64)	85.70% <33.33%> (-0.03%)	⬇️
py310-pytest90-xdist-cover (macos/arm64)	?
py310-pytest90-xdist-cover (ubuntu/x64)	?
py310-pytest90-xdist-cover (windows/x64)	?
py311-pytest84-nodist-cover (macos/arm64)	85.98% <33.33%> (-0.03%)	⬇️
py311-pytest84-nodist-cover (ubuntu/x64)	86.28% <33.33%> (-0.07%)	⬇️
py311-pytest84-nodist-cover (windows/x64)	85.74% <33.33%> (-0.03%)	⬇️
py311-pytest84-xdist-cover (macos/arm64)	?
py311-pytest84-xdist-cover (ubuntu/x64)	?
py311-pytest84-xdist-cover (windows/x64)	?
py311-pytest90-nodist-cover (macos/arm64)	85.94% <33.33%> (-0.03%)	⬇️
py311-pytest90-nodist-cover (ubuntu/x64)	86.25% <33.33%> (-0.27%)	⬇️
py311-pytest90-nodist-cover (windows/x64)	85.50% <33.33%> (-0.24%)	⬇️
py311-pytest90-xdist-cover (macos/arm64)	?
py311-pytest90-xdist-cover (ubuntu/x64)	?
py311-pytest90-xdist-cover (windows/x64)	?
py312-pytest84-nodist-cover (macos/arm64)	85.98% <33.33%> (-0.03%)	⬇️
py312-pytest84-nodist-cover (ubuntu/x64)	86.28% <33.33%> (-0.27%)	⬇️
py312-pytest84-nodist-cover (windows/x64)	85.74% <33.33%> (-0.03%)	⬇️
py312-pytest84-xdist-cover (macos/arm64)	?
py312-pytest84-xdist-cover (ubuntu/x64)	?
py312-pytest84-xdist-cover (windows/x64)	?
py312-pytest90-nodist-cover (macos/arm64)	85.94% <33.33%> (-0.03%)	⬇️
py312-pytest90-nodist-cover (ubuntu/x64)	86.28% <33.33%> (-0.03%)	⬇️
py312-pytest90-nodist-cover (windows/x64)	85.50% <33.33%> (-0.24%)	⬇️
py312-pytest90-xdist-cover (macos/arm64)	?
py312-pytest90-xdist-cover (ubuntu/x64)	?
py312-pytest90-xdist-cover (windows/x64)	?
py313-pytest84-nodist-cover (macos/arm64)	85.98% <33.33%> (-0.03%)	⬇️
py313-pytest84-nodist-cover (ubuntu/x64)	86.28% <33.33%> (-0.24%)	⬇️
py313-pytest84-nodist-cover (windows/x64)	85.74% <33.33%> (+0.17%)	⬆️
py313-pytest84-xdist-cover (macos/arm64)	?
py313-pytest84-xdist-cover (ubuntu/x64)	?
py313-pytest84-xdist-cover (windows/x64)	?
py313-pytest90-nodist-cover (macos/arm64)	85.94% <33.33%> (-0.03%)	⬇️
py313-pytest90-nodist-cover (ubuntu/x64)	86.28% <33.33%> (-0.03%)	⬇️
py313-pytest90-nodist-cover (windows/x64)	85.50% <33.33%> (-0.24%)	⬇️
py313-pytest90-xdist-cover (macos/arm64)	?
py313-pytest90-xdist-cover (ubuntu/x64)	?
py313-pytest90-xdist-cover (windows/x64)	?
py314-pytest84-nodist-cover (macos/arm64)	89.31% <33.33%> (-0.04%)	⬇️
py314-pytest84-nodist-cover (ubuntu/x64)	89.58% <33.33%> (-0.27%)	⬇️
py314-pytest84-nodist-cover (windows/x64)	89.04% <33.33%> (-0.04%)	⬇️
py314-pytest84-xdist-cover (macos/arm64)	?
py314-pytest84-xdist-cover (ubuntu/x64)	?
py314-pytest84-xdist-cover (windows/x64)	?
py314-pytest90-nodist-cover (macos/arm64)	89.31% <33.33%> (-0.04%)	⬇️
py314-pytest90-nodist-cover (ubuntu/x64)	89.58% <33.33%> (-0.07%)	⬇️
py314-pytest90-nodist-cover (windows/x64)	88.83% <33.33%> (-0.24%)	⬇️
py314-pytest90-xdist-cover (macos/arm64)	?
py314-pytest90-xdist-cover (ubuntu/x64)	?
py314-pytest90-xdist-cover (windows/x64)	?
py39-pytest84-nodist-cover (macos/arm64)	85.35% <33.33%> (-0.03%)	⬇️
py39-pytest84-nodist-cover (ubuntu/x64)	85.66% <33.33%> (-0.03%)	⬇️
py39-pytest84-nodist-cover (windows/x64)	85.12% <33.33%> (-0.03%)	⬇️
py39-pytest84-xdist-cover (macos/arm64)	?
py39-pytest84-xdist-cover (ubuntu/x64)	?
py39-pytest84-xdist-cover (windows/x64)	?
pypy311-pytest84-nodist-cover (macos/arm64)	85.13% <33.33%> (-0.03%)	⬇️
pypy311-pytest84-nodist-cover (ubuntu/x64)	85.43% <33.33%> (-0.07%)	⬇️
pypy311-pytest84-nodist-cover (windows/x64)	?
pypy311-pytest84-xdist-cover (macos/arm64)	?
pypy311-pytest84-xdist-cover (ubuntu/x64)	?
pypy311-pytest84-xdist-cover (windows/x64)	?
pypy311-pytest90-nodist-cover (macos/arm64)	84.92% <33.33%> (-0.24%)	⬇️
pypy311-pytest90-nodist-cover (ubuntu/x64)	85.64% <33.33%> (-0.07%)	⬇️
pypy311-pytest90-nodist-cover (windows/x64)	84.89% <33.33%> (-0.03%)	⬇️
pypy311-pytest90-xdist-cover (macos/arm64)	?
pypy311-pytest90-xdist-cover (ubuntu/x64)	?
pypy311-pytest90-xdist-cover (windows/x64)	?

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