Found tool(s) 'external/bazel_tools/tools/zip/zipper/zipper' in inputs.

```
external/io_bazel_rules_scala/scala/private/rule_impls.bzl", line 106, in _build_nosrc_jar
ctx.actions.run_shell(inputs = inputs, outputs = outs, com..., <2 more arguments>)
Found tool(s) 'external/bazel_tools/tools/zip/zipper/zipper' in inputs. A tool is
an input with executable=True set. All tools should be passed using the
'tools' argument instead of 'inputs' in order to make their runfiles available
to the action. This safety check will not be performed once the action is
modified to take a 'tools' argument. To temporarily disable this check, set
--incompatible_no_support_tools_in_action_inputs=false.
```

Start at external/io_bazel_rules_scala/scala/private/rule_impls.bzl, line 106, where _build_nosrc_jar invokes ctx.actions.run_shell. Reproduce or inspect the action involving external/bazel_tools/tools/zip/zipper/zipper, then verify the safety-check warning is gone and the action still completes successfully.

Written by the indexing model from the issue text.