macro_rules! start_marker {
() => { ... };
}Expand description
Marks the start of meaningful backtraces on the current thread: frames
below this call are hidden from rendered error and panic traces. The
function containing the call stays visible. A later call replaces the
marker; other threads are unaffected.
RUST_BACKTRACE=full renders traces unfiltered, ignoring markers.
Hiding is applied by the fancy feature’s renderers; without that
feature the marker is recorded but has no effect.