eagerly_emit_delayed_bugs - The Rust Unstable Book

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# `eagerly-emit-delayed-bugs`

This feature is perma-unstable and has no tracking issue.

This flag converts all `span_delayed_bug()` calls to `bug!` calls, exiting the compiler immediately and allowing you to generate a backtrace of where the delayed bug occurred. For full documentation, see the rustc-dev-guide.