su: ignore --preserve-environment, it's mutually exclusive to --login.

Listening on http://127.0.0.1:34437

 *** caught segfault ***
address 0xe, cause 'memory not mapped'
*** recursive gc invocation
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*** recursive gc invocation

Traceback:
 1: dim.data.frame(.times)
 2: dim(.times)
 3: timerCallbacks$timeToNextEvent()
 4: serviceApp()
 5: ..stacktracefloor..(serviceApp())
 6: withCallingHandlers(expr, error = doCaptureStack)
 7: domain$wrapSync(expr)
 8: promises::with_promise_domain(createStackTracePromiseDomain(),     expr)
 9: captureStackTraces({    while (!.globals$stopped) {        ..stacktracefloor..(serviceApp())    }})
10: ..stacktraceoff..(captureStackTraces({    while (!.globals$stopped) {        ..stacktracefloor..(serviceApp())    }}))
11: runApp(Sys.getenv("SHINY_APP"), port = port, launch.browser = FALSE)
An irrecoverable exception occurred. R is aborting now ...
-bash: line 1: 25310 Segmentation fault      R --no-save --slave -f \/opt\/shiny-server\/R\/SockJSAdapter\.R