CI build CI / CMake -> exporter proto (Build as DLL) (pull_request) is unstable

[marcalff]

Seen the following failure multiple times in CI:

Build:

CI / CMake -> exporter proto (Build as DLL) (pull_request)

Logs:

        Start 460: exporter.with_env_properties.ETWLogger.LoggerCheckWithAttributes
460/461 Test #460: exporter.with_env_properties.ETWLogger.LoggerCheckWithAttributes .....................................   Passed    0.01 sec
        Start 461: exporter.with_env_properties.ETWLogger.LoggerCheckWithTableNameMappings
461/461 Test #461: exporter.with_env_properties.ETWLogger.LoggerCheckWithTableNameMappings ..............................   Passed    0.01 sec

100% tests passed, 0 tests failed out of 461

Total Test time (real) =  34.43 sec
{
  name          : f1
  trace_id      : 35cd60277d99e0a524430f44e4c5b148
  span_id       : e3986f39c8b3d113
  tracestate    : 
  parent_span_id: c829b4b5abac616a
  start         : 1732632584148105700
  duration      : 8000
  description   : 
  span kind     : Internal
	service.name: unknown_service
  instr-lib     : foo_library-1.18.0
}
{
  name          : library
  trace_id      : 35cd60277d99e0a524430f44e4c5b148
  span_id       : 2bd16acfaa308e03
  tracestate    : 
  parent_span_id: 0000000000000000
  start         : 1732632584148034600
  duration      : 321500
  description   : 
  span kind     : Internal
  status        : Unset
  attributes    : 
  events        : 
  links         : 
  resources     : 
	telemetry.sdk.language: cpp
	telemetry.sdk.name: opentelemetry
	telemetry.sdk.version: 1.18.0
	service.name: unknown_service
  instr-lib     : foo_library-1.18.0
}

Error: Process completed with exit code 1.

So, all tests pass, and yet the CI fails.
To investigate, what exactly returns an error code (and why) to the github worker.