Method fmt

crates/core/src/error/error.rs:437–468

(&self, f: &mut fmt::Formatter<'_>)

impl fmt::Debug for Error {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        if f.alternate() {
            return f.debug_struct("Error").field("inner", &self.inner).finish();
        }

        let inner = &self.inner;
        inner.display(f)?;

        if let Some(source) = inner.source() {
            f.write_str("\n\nCaused by:\n")?;
            let multiple_causes = source.source().is_some();
            for (i, e) in source.chain().enumerate() {
                if multiple_causes {
                    write!(f, "{i: >5}: ")?;
                } else {
                    write!(f, "    ")?;
                }
                writeln!(f, "{e}")?;
            }
        }

        #[cfg(feature = "backtrace")]
        {
            let backtrace = inner.backtrace();
            if let BacktraceStatus::Captured = backtrace.status() {
                f.write_str("\nStack backtrace:\n")?;
                fmt::Display::fmt(backtrace, f)?;
            }
        }

        Ok(())
    }
}

impl fmt::Display for Error {