[Scala 2.13.12] Issue with scala.tools.nsc.reporters.Reporter when compiling

[scoquelin]

Seems like this change in the Scala codebase has broken compilation of DepsTrackingReporter.java since it introduces a new parameter (with a default value) to existing error/warning methods that Java cannot interpret seamlessly.

Here is the stacktrace I get when compiling with Scala 2.13.12 (builds fine with 2.13.11 btw)

ERROR: /private/var/tmp/_bazel_sebastien/beeef587c4e635c319809c3cfc50320b/external/io_bazel_rules_scala/src/java/io/bazel/rulesscala/scalac/reporter/BUILD:5:13: Building external/io_bazel_rules_scala/src/java/io/bazel/rulesscala/scalac/reporter/libreporter.jar (2 source files) [for tool] failed: (Exit 1): java failed: error executing command (from target @io_bazel_rules_scala//src/java/io/bazel/rulesscala/scalac/reporter:reporter) external/remotejdk11_macos_aarch64/bin/java -XX:-CompactStrings '--add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED' '--add-exports=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED' ... (remaining 18 arguments skipped)
warning: [path] bad path element "/private/var/tmp/_bazel_sebastien/beeef587c4e635c319809c3cfc50320b/execroot/platform/bazel-out/darwin_arm64-opt-exec-2B5CBBC6/bin/external/io_bazel_rules_scala_scala_compiler/io_bazel_rules_scala_scala_compiler.stamp/scala-reflect.jar": no such file or directory
warning: [path] bad path element "/private/var/tmp/_bazel_sebastien/beeef587c4e635c319809c3cfc50320b/execroot/platform/bazel-out/darwin_arm64-opt-exec-2B5CBBC6/bin/external/io_bazel_rules_scala_scala_compiler/io_bazel_rules_scala_scala_compiler.stamp/scala-library.jar": no such file or directory
external/io_bazel_rules_scala/src/java/io/bazel/rulesscala/scalac/reporter/DepsTrackingReporter.java:220: error: method warning in class Reporter cannot be applied to given types;
            reporter.warning(NoPosition$.MODULE$, strictDepsReport.toString());
                    ^
  required: Position,String,List<CodeAction>
  found: NoPosition$,String
  reason: actual and formal argument lists differ in length
external/io_bazel_rules_scala/src/java/io/bazel/rulesscala/scalac/reporter/DepsTrackingReporter.java:222: error: method error in class Reporter cannot be applied to given types;
            reporter.error(NoPosition$.MODULE$, strictDepsReport.toString());
                    ^
  required: Position,String,List<CodeAction>
  found: NoPosition$,String
  reason: actual and formal argument lists differ in length
external/io_bazel_rules_scala/src/java/io/bazel/rulesscala/scalac/reporter/DepsTrackingReporter.java:228: error: method warning in class Reporter cannot be applied to given types;
            reporter.warning(NoPosition$.MODULE$, compilerDepsReport.toString());
                    ^
  required: Position,String,List<CodeAction>
  found: NoPosition$,String
  reason: actual and formal argument lists differ in length
external/io_bazel_rules_scala/src/java/io/bazel/rulesscala/scalac/reporter/DepsTrackingReporter.java:230: error: method error in class Reporter cannot be applied to given types;
            reporter.error(NoPosition$.MODULE$, compilerDepsReport.toString());
                    ^
  required: Position,String,List<CodeAction>
  found: NoPosition$,String
  reason: actual and formal argument lists differ in length
external/io_bazel_rules_scala/src/java/io/bazel/rulesscala/scalac/reporter/DepsTrackingReporter.java:250: error: method warning in class Reporter cannot be applied to given types;
            reporter.warning(NoPosition$.MODULE$, unusedDepsReport.toString());
                    ^
  required: Position,String,List<CodeAction>
  found: NoPosition$,String
  reason: actual and formal argument lists differ in length
external/io_bazel_rules_scala/src/java/io/bazel/rulesscala/scalac/reporter/DepsTrackingReporter.java:252: error: method error in class Reporter cannot be applied to given types;
            reporter.error(NoPosition$.MODULE$, unusedDepsReport.toString());
                    ^
  required: Position,String,List<CodeAction>
  found: NoPosition$,String
  reason: actual and formal argument lists differ in length

I could try to take a stab at it however since all existing tests are currently based on Scala 2.13.6 and I this change would require to be targeting a specific Scala version I would appreciate some guidance on how to approach this. Thanks !