Workaround failing build_unix_debug #2520
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mmilata
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jpochyla and
matejcik
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prusnak
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Something needs the symbol even though we don't do unwinding (I think):
Defining one that does nothing seems to avoid the problem, not sure what happens when it actually gets called. Needs nightly rustc. Possibly related: rust-lang/rust#56152, https://docs.rust-embedded.org/embedonomicon/smallest-no-std.html#eh_personality