Build Failure: CodeQL detected code written in Java/Kotlin but could not process any of it.

[vorburger]

E.g. https://github.com/google/android-fhir/actions/runs/6653530183/job/18079682920?pr=2309 (for #2309) failed with:

/opt/hostedtoolcache/CodeQL/2.15.1/x64/codeql/codeql database finalize --finalize-dataset --threads=8 --ram=29865 /home/runner/work/_temp/codeql_databases/java
  CodeQL detected code written in Java/Kotlin but could not process any of it. Review our troubleshooting guide at https://gh.io/troubleshooting-code-scanning/no-source-code-seen-during-build.
  Error: Encountered a fatal error while running "/opt/hostedtoolcache/CodeQL/2.15.1/x64/codeql/codeql database finalize --finalize-dataset --threads=8 --ram=29[86](https://github.com/google/android-fhir/actions/runs/6653530183/job/18079682920?pr=2309#step:7:87)5 /home/runner/work/_temp/codeql_databases/java". Exit code was 32 and last log line was: CodeQL detected code written in Java/Kotlin but could not process any of it. Review our troubleshooting guide at https://gh.io/troubleshooting-code-scanning/no-source-code-seen-during-build. See the logs for more details.

[vorburger]

This seems to be caused since #2307 was just merged, and GitHub appears to get a bit confused... 😭

... because it still wants to run the old (now deleted) CodeQL related action (which doesn't exist anymore now).

I had hoped that a git rebase from master (locally, or by clicking that Update branch button) would fix this...

... but apparently that is not so?! Hm.

[vorburger]

I raised #2311 to re-create PR #2309 to see if that helps, but it does not - exact same problem.

Apparently GitHub is somehow "hard-coded"?! Just for the record, the exact problem is that:

1. The Build Action, which WORKED in Merge CodeQL & Build GitHub Actions (re. #2294) #2307, now for new PRs fails, with:

Run github/codeql-action/analyze@v2
/opt/hostedtoolcache/CodeQL/2.15.1/x64/codeql/codeql version --format=json
{
  "productName" : "CodeQL",
  "vendor" : "GitHub",
  "version" : "2.15.1",
  "sha" : "9e282a764bc1d84cc6bf2902fd2048[63](https://github.com/google/android-fhir/actions/runs/6653690139/job/18080196026?pr=2311#step:7:64)d1a[64](https://github.com/google/android-fhir/actions/runs/6653690139/job/18080196026?pr=2311#step:7:65)6e5",
  "branches" : [
    "codeql-cli-2.15.1"
  ],
  "copyright" : "Copyright (C) 2019-2023 GitHub, Inc.",
  "unpackedLocation" : "/opt/hostedtoolcache/CodeQL/2.15.1/x64/codeql",
  "configFileLocation" : "/home/runner/.config/codeql/config",
  "configFileFound" : false,
  "features" : {
    "featuresInVersionResult" : true,
    "indirectTracingSupportsStaticBinaries" : false,
    "supportsPython312" : true,
    "mrvaPackCreate" : true
  }
}
Finalizing java
  /opt/hostedtoolcache/CodeQL/2.15.1/x64/codeql/codeql database finalize --finalize-dataset --threads=8 --ram=298[65](https://github.com/google/android-fhir/actions/runs/6653690139/job/18080196026?pr=2311#step:7:66) /home/runner/work/_temp/codeql_databases/java
  CodeQL detected code written in Java/Kotlin but could not process any of it. Review our troubleshooting guide at https://gh.io/troubleshooting-code-scanning/no-source-code-seen-during-build.
  Error: Encountered a fatal error while running "/opt/hostedtoolcache/CodeQL/2.15.1/x64/codeql/codeql database finalize --finalize-dataset --threads=8 --ram=29[86](https://github.com/google/android-fhir/actions/runs/6653690139/job/18080196026?pr=2311#step:7:87)5 /home/runner/work/_temp/codeql_databases/java". Exit code was 32 and last log line was: CodeQL detected code written in Java/Kotlin but could not process any of it. Review our troubleshooting guide at https://gh.io/troubleshooting-code-scanning/no-source-code-seen-during-build. See the logs for more details.

2. GitHub still tries to run the "Code scanning results / CodeQL" Action, and fails to with:

Error when processing the SARIF file
This check concluded as neutral.

even though .github/workflows/codeql.yaml was deleted in #2307. This is weird!

I'm going to revert #2307...

[vorburger]

#2312 "fixed" this, and e.g. #2298 and #2309 are building normally again now, so I'm going to close this bug again now.

[vorburger]

FTR: I'm tetrying this in #2314 (but a little bit differently; hoping I now better understood the problem).