`lingo run` returns with `- Main: Success` even when the program exits with error

[erlingrj]

target C;

main reactor {
    reaction (startup)  {=
        lf_print("Hello World!");
        lf_print_error_and_exit("ERROR");
    =}
} 

Yields:

Running "/home/erling/dev/lf/lingo/tmp/c/target/bin/Main"
FATAL ERROR: ERROR
---- Start execution at time Tue Oct 10 17:15:55 2023
---- plus 538501132 nanoseconds
Environment 0: ---- Spawning 1 workers.
Hello World!
---- Terminating environment 0
---- Elapsed logical time (in nsec): 0
---- Elapsed physical time (in nsec): 235,323
- Main: Success

[erlingrj]

Also. The ordering of output on stderr and stdout is not correct. This is what I get when running it normally:

---- Start execution at time Tue Oct 10 19:12:24 2023
---- plus 356385314 nanoseconds
Environment 0: ---- Spawning 1 workers.
Hello World!
FATAL ERROR: ERROR
---- Terminating environment 0
---- Elapsed logical time (in nsec): 0
---- Elapsed physical time (in nsec): 414,840

[tanneberger]

This is fixed in the testing branch