use color_eyre for its backtrace feature and error reporting (#1855)

* use color_eyre for its backtrace feature and error reporting

* lost Cargo.lock update

* wrapper

* add error glue to be able to utilize eyre

* Update src/main.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* Update src/main.rs

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

* avoid duplicate error print

* Update src/main.rs

Co-authored-by: Andronik Ordian <write@reusable.software>

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
Co-authored-by: Andronik Ordian <write@reusable.software>

polkadot/src/main.rs

@@ -18,6 +18,42 @@
 
 #![warn(missing_docs)]
 
-fn main() -> cli::Result<()> {
-	cli::run()
+use color_eyre::eyre;
+
+use cli::Error as PolkaError;
+
+use std::{error, fmt};
+
+/// A helper to satisfy the requirements of `eyre`
+/// compatible errors, which require `Send + Sync`
+/// which are not satisfied by the `sp_*` crates.
+#[derive(Debug)]
+struct ErrorWrapper(std::sync::Arc<PolkaError>);
+
+// nothing is going to be sent to another thread
+// it merely exists to glue two distinct error
+// types together where the requirements differ
+// with `Sync + Send` and without them for `wasm`.
+unsafe impl Sync for ErrorWrapper {}
+unsafe impl Send for ErrorWrapper {}
+
+impl error::Error for ErrorWrapper {
+	fn source(&self) -> Option<&(dyn error::Error + 'static)> {
+		(&*self.0).source().and_then(|e| e.source())
+	}
+	fn description(&self) -> &str {
+		"Error Wrapper"
+	}
+}
+
+impl fmt::Display for ErrorWrapper {
+	fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+		write!(f, "{}", &*self.0)
+	}
+}
+
+fn main() -> eyre::Result<()> {
+	color_eyre::install()?;
+	cli::run().map_err(|e| ErrorWrapper(std::sync::Arc::new(e)))?;
+	Ok(())
 }