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LAST BUILD BRANCH: dependabot/cargo/src/rust/rust-version-updates-554cb32683
DEFAULT BRANCH: main
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Files 317
Run time 19s
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coverage: 69.106% (+0.2%) from 68.882%
CI_FLAGS="-fkmsrcnet 'Unit tests for pants and pants-plugins'"

push

travis-ci

jsirois 
Add optional support for auto-shading jvm tools.

When registering a jvm tool, the main classname of the tool can be
specified to trigger auto-shading of the tool classpath.

This functionality is dogfooded by JUnitRun for its junit-runner tool.

This changes adds a test for bootstrap_jvm_tools.py that exercises the
normal (legacy) and shading paths as well as updating the
jvm_tool_task_test_base.py infra to work with this new shading option.
The latter enables the pre-existing JUnitRunTest to operate, now using
an auto-shaded jar.

Testing Done:
I manually tested shaded jar invalidation.  It is costly (~6s for the
junit-runner tool), so having the invalidation work correctly is
important.

Decent coverage for the bulk of the new code:
```
$ PANTS_PY_COVERAGE=modules:pants.backend.jvm.tasks.bootstrap_jvm_tools pants.dev test tests/python/pants_test/backend/jvm/tasks:bootstrap_jvm_tools
...
02:29:21 00:00   [test]
02:29:21 00:00     [run_prep_command]
02:29:21 00:00     [test]
02:29:21 00:00     [pytest]
02:29:21 00:00       [run]
                     ============== test session starts ===============
                     platform linux2 -- Python 2.7.8 -- py-1.4.26 -- pytest-2.6.4
                     plugins: timeout
                     collected 1 items

                     tests/python/pants_test/backend/jvm/tasks/test_bootstrap_jvm_tools.py .

                     =========== 1 passed in 10.86 seconds ============
                     Name                                                     Stmts   Miss Branch BrMiss  Cover
                     ------------------------------------------------------------------------------------------
                     src/python/pants/backend/jvm/tasks/bootstrap_jvm_tools     125     16     38     12    83%

02:29:34 00:13     [junit]
02:29:34 00:13     [specs]
               SUCCESS
```

CI went green here:
  https://travis-ci.org/pantsbuild/pants/builds/57984477

Bugs closed: 663, 1362, 1391

Reviewed at ht... (continued)

12842 of 18583 relevant lines covered (69.11%)

0.69 hits per line

Source Files on job 4414.3 (CI_FLAGS="-fkmsrcnet 'Unit tests for pants and pants-plugins'")