Merge "RBE should not copy source file back to local" am: 7686708a

			Labels:       map[string]string{"type": "lint", "tool": "clang-tidy", "lang": "cpp"},

			ExecStrategy: "${config.REClangTidyExecStrategy}",

			Inputs:       []string{"$in"},

			// OutputFile here is $in for remote-execution since its possible that

			// clang-tidy modifies the given input file itself and $out refers to the

			// ".tidy" file generated for ninja-dependency reasons.

			OutputFiles: []string{"$in"},

			// Although clang-tidy has an option to "fix" source files, that feature is hardly useable

			// under parallel compilation and RBE. So we assume no OutputFiles here.

			// The clang-tidy fix option is best run locally in single thread.

			// Copying source file back to local caused two problems:

			// (1) New timestamps trigger clang and clang-tidy compilations again.

			// (2) Changing source files caused concurrent clang or clang-tidy jobs to crash.

			Platform: map[string]string{remoteexec.PoolKey: "${config.REClangTidyPool}"},

		}, []string{"cFlags", "tidyFlags"}, []string{})