Similar to #10 (comment) raised by @ccleve in a test project https://github.com/paulvi/com.example.grpc.maven To reproduce press Alt+F5 that is call Maven -> Update Project... That marks pom.xml an...

Eclipse - Multiple annotations found at this line: - Missing: ---------- 1) com.google.protobuf:protoc:exe:${os.detected.classifier}:3.1.0 · Issue #18 · xolstice/protobuf-maven-plugin