## SRE should fail more gracefully when SymbolWriter is missing

_Submitted by Rodrigo Kumpera \[MSFT\] on 2017-03-03 23:18 UTC_

XA doesn't ship SymbolWriter and our SRE impl throws if you request that symbols be produced.

We should fail silently in this case and produce a warning.

It would be even better if we shipped a symbol writer for Android, thought that would have very limited value.

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_Reference: <https://bugzilla.xamarin.com/show_bug.cgi?id=53038>_