Treat warnings as errors

[danth]

This ensures that warnings are not ignored, by causing the build to fail.

[github-actions]

License Check Results

🚀 The license check job ran with the Bazel command:

bazel run --lockfile_mode=error //:license-check

Status: ⚠️ Needs Review

Click to expand output

[License Check Output]
Extracting Bazel installation...
Starting local Bazel server (8.6.0) and connecting to it...
INFO: Invocation ID: ff67e256-46b2-4778-b957-a1ef45e2d629
Computing main repo mapping: 
Computing main repo mapping: 
Loading: 
Loading: 0 packages loaded
Loading: 0 packages loaded
Loading: 0 packages loaded
    currently loading: 
Loading: 0 packages loaded
    currently loading: 
Loading: 0 packages loaded
    currently loading: 
Analyzing: target //:license-check (1 packages loaded, 0 targets configured)
Analyzing: target //:license-check (1 packages loaded, 0 targets configured)

Analyzing: target //:license-check (37 packages loaded, 10 targets configured)

Analyzing: target //:license-check (80 packages loaded, 10 targets configured)

Analyzing: target //:license-check (140 packages loaded, 825 targets configured)

Analyzing: target //:license-check (151 packages loaded, 3888 targets configured)

Analyzing: target //:license-check (155 packages loaded, 6279 targets configured)

Analyzing: target //:license-check (156 packages loaded, 6292 targets configured)

Analyzing: target //:license-check (163 packages loaded, 8261 targets configured)

Analyzing: target //:license-check (164 packages loaded, 8271 targets configured)

Analyzing: target //:license-check (167 packages loaded, 10159 targets configured)

Analyzing: target //:license-check (167 packages loaded, 10159 targets configured)

Analyzing: target //:license-check (168 packages loaded, 10283 targets configured)

INFO: Analyzed target //:license-check (169 packages loaded, 10409 targets configured).
[14 / 16] [Prepa] JavaToolchainCompileBootClasspath external/rules_java+/toolchains/platformclasspath.jar
[15 / 16] Building license.check.license_check.jar (); 0s disk-cache, multiplex-worker
INFO: Found 1 target...
Target //:license.check.license_check up-to-date:
  bazel-bin/license.check.license_check
  bazel-bin/license.check.license_check.jar
INFO: Elapsed time: 25.096s, Critical Path: 2.71s
INFO: 16 processes: 12 internal, 3 processwrapper-sandbox, 1 worker.
INFO: Build completed successfully, 16 total actions
INFO: Running command line: bazel-bin/license.check.license_check ./formatted.txt <args omitted>
usage: org.eclipse.dash.licenses.cli.Main [-batch <int>] [-cd <url>]
       [-confidence <int>] [-ef <url>] [-excludeSources <sources>] [-help] [-lic
       <url>] [-project <shortname>] [-repo <url>] [-review] [-summary <file>]
       [-timeout <seconds>] [-token <token>]

[danth]

The existing warnings should be fixed by #293