Add more debug logging for when the job is attempted and the worker i…

…s started (#4881)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

src/toil/batchSystems/singleMachine.py

@@ -655,6 +655,7 @@ def _startChild(self, jobCommand, jobID, coreFractions, jobMemory, jobDisk, job_
             # and all its children together. We assume that the
             # process group ID will equal the PID of the process we
             # are starting.
+            logger.debug("Attempting to run job command: %s", jobCommand)
             popen = subprocess.Popen(jobCommand,
                                      shell=True,
                                      env=child_environment,

src/toil/worker.py

@@ -159,6 +159,8 @@ def workerScript(
     if config.colored_logs:
         install_log_color()
 
+    logger.debug("Worker started for job %s...", job_name)
+
     ##########################################
     #Create the worker killer, if requested
     ##########################################
@@ -749,7 +751,6 @@ def in_contexts(contexts: List[str]) -> Iterator[None]:
 def main(argv: Optional[List[str]] = None) -> None:
     if argv is None:
         argv = sys.argv
-
     # Parse our command line
     options = parse_args(argv)