use sys.exit() not exit()

exit() is meant to be a helper in interactive repls and won't work if python is started with -S in a script
https://stackoverflow.com/questions/6501121/difference-between-exit-and-sys-exit-in-python

deploy/firesim

@@ -315,7 +315,7 @@ def check_env() -> None:
     # make sure that sourceme-f1 was sourced
     if os.environ.get('FIRESIM_SOURCED') is None:
         rootLogger.critical("ERROR: You must source firesim/sourceme-f1-manager.sh!")
-        exit(1)
+        sys.exit(1)
 
 
 def main(args):
@@ -395,4 +395,4 @@ if __name__ == '__main__':
         exitcode = 1
     finally:
         rootLogger.info("""The full log of this run is:\n{basedir}/{fulllog}""".format(basedir=dname, fulllog=full_log_filename))
-        exit(exitcode)
+        sys.exit(exitcode)

deploy/runtools/runtime_config.py

@@ -18,6 +18,7 @@ from runtools.workload import WorkloadConfig
 from runtools.run_farm import RunFarm
 from util.streamlogger import StreamLogger
 import os
+import sys
 
 LOCAL_DRIVERS_BASE = "../sim/output/f1/"
 LOCAL_DRIVERS_GENERATED_SRC = "../sim/generated-src/f1/"
@@ -209,7 +210,7 @@ class RuntimeHWConfig:
             if localcap.failed:
                 rootLogger.info("FPGA software driver build failed. Exiting. See log for details.")
                 rootLogger.info("""You can also re-run '{}' in the 'firesim/sim' directory to debug this error.""".format(driverbuildcommand))
-                exit(1)
+                sys.exit(1)
 
         self.driver_built = True