1 files changed, 12 insertions, 8 deletions
diff --git a/openpgp/examples/wrap-literal.rs b/openpgp/examples/wrap-literal.rs
index 7f86e164..7f2b6023 100644
--- a/openpgp/examples/wrap-literal.rs
+++ b/openpgp/examples/wrap-literal.rs
@@ -6,22 +6,24 @@
 use std::env;
 use std::io;
 
+use anyhow::Context;
+
 extern crate sequoia_openpgp as openpgp;
 use crate::openpgp::armor;
 use crate::openpgp::serialize::stream::{Message, LiteralWriter};
 
-fn main() {
+fn main() -> openpgp::Result<()> {
     let args: Vec<String> = env::args().collect();
     if args.len() != 1 {
-        panic!("A simple filter wrapping data into a literal data packet.\n\n\
-                Usage: {} <input >output\n", args[0]);
+        return Err(anyhow::anyhow!("A simple filter wrapping data into a literal data packet.\n\n\
+                Usage: {} <input >output\n", args[0]));
     }
 
     // Compose a writer stack corresponding to the output format and
     // packet structure we want.  First, we want the output to be
     // ASCII armored.
     let mut sink = armor::Writer::new(io::stdout(), armor::Kind::Message)
-        .expect("Failed to create armored writer.");
+        .context("Failed to create armored writer.")?;
 
     // Stream an OpenPGP message.
     let message = Message::new(&mut sink);
@@ -29,17 +31,19 @@ fn main() {
     // Then, create a literal writer to wrap the data in a literal
     // message packet.
     let mut literal = LiteralWriter::new(message).build()
-        .expect("Failed to create literal writer");
+        .context("Failed to create literal writer")?;
 
     // Copy all the data.
     io::copy(&mut io::stdin(), &mut literal)
-        .expect("Failed to sign data");
+        .context("Failed to sign data")?;
 
     // Finally, teardown the stack to ensure all the data is written.
     literal.finalize()
-        .expect("Failed to write data");
+        .context("Failed to write data")?;
 
     // Finalize the armor writer.
     sink.finalize()
-        .expect("Failed to write data");
+        .context("Failed to write data")?;
+
+    Ok(())
 }