Fix torchx import error

[saitcakmak]

Summary: from ax.runners.torchx import TORCHX_TRACKER_BASE leads to an import error in Python 3.7 unit tests. Moving this into try/except block to get around the issue.

Example failing run https://github.com/facebook/Ax/runs/6891472698?check_suite_focus=true

Reviewed By: mpolson64

Differential Revision: D37162339

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D37162339

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D37162339

[codecov-commenter]

Codecov Report

Merging #1001 (eda7715) into main (369d41b) will increase coverage by 0.01%. The diff coverage is 95.91%.

@@            Coverage Diff             @@
##             main    #1001      +/-   ##
==========================================
+ Coverage   94.12%   94.14%   +0.01%     
==========================================
  Files         404      404              
  Lines       35002    35005       +3     
==========================================
+ Hits        32947    32956       +9     
+ Misses       2055     2049       -6     

Impacted Files	Coverage Δ
ax/runners/tests/test_torchx.py	96.49% <95.83%> (+0.19%)	:arrow_up:
ax/metrics/torchx.py	58.62% <100.00%> (+10.34%)	:arrow_up:
ax/runners/torchx.py	98.18% <0.00%> (+5.45%)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 369d41b...eda7715. Read the comment docs.

[facebook-github-bot]

@saitcakmak has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[Balandat]

@saitcakmak looks like D37162339 landed - did the bot fail to close this?

[saitcakmak]

@balandat Yeah, it's not a one-off issue either. There are a bunch of other open PRs that were landed. Maybe there's an issue with the bot config for Ax?

[saitcakmak]

already committed