MirrorRequest: catch UnsupportedOperationException #252

[jukzi]

and resolve deprecated call

#252

[github-actions]

Test Results

    6 files   -     3      6 suites   - 3   23m 21s ⏱️ - 7m 10s
2 183 tests ±    0  2 179 ✅ ±    0  4 💤 ±0  0 ❌ ±0 
4 424 runs   - 2 215  4 417 ✅  - 2 211  7 💤  - 4  0 ❌ ±0 

Results for commit bb78b65. ± Comparison against base commit e84b5a0.

[laeubi]

Please note that this does not ignores the exception as suggested by @merks here:

eclipse-platform/.github#117 (comment)

so it might lead to a download never happens even though we just can't remove the descriptor (for whatever reasons).

[jukzi]

then would you mind to fix it accordingly?

[laeubi]

See:

• Ignore the UnsupportedOperationException in case of descriptor removal #472