diff --git a/Cargo.toml b/Cargo.toml
index a39e520..99ebd5e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,5 +18,4 @@ serde = { version = "1", features = ["derive"] }
 tokio = { version = "1", features = ["rt-multi-thread"] }
 
 [build-dependencies]
-anyhow = "1"
 zip = { version = "0.6", default-features = false, features = ["deflate"] }
diff --git a/build.rs b/build.rs
index 6979e0f..b30c3be 100644
--- a/build.rs
+++ b/build.rs
@@ -1,31 +1,33 @@
-use anyhow::{ensure, Result};
 use std::fs::File;
 use std::io;
 use std::path::{Path, PathBuf};
 use std::process::Command;
 use zip::ZipWriter;
 
-fn main() -> Result<()> {
+fn main() {
     let out_dir = PathBuf::from(std::env::var_os("OUT_DIR").unwrap());
 
     let output = Command::new("cargo")
         .args(["package", "--list", "--allow-dirty"])
-        .output()?;
-    ensure!(output.status.success(), "unsuccessful");
+        .output()
+        .unwrap();
+    if !output.status.success() {
+        panic!("cargo package failed");
+    }
 
-    let mut writer = ZipWriter::new(File::create(out_dir.join("source.zip"))?);
-    for path in String::from_utf8(output.stdout)?.lines() {
+    let mut writer = ZipWriter::new(File::create(out_dir.join("source.zip")).unwrap());
+    for path in String::from_utf8(output.stdout).unwrap().lines() {
         if path == "Cargo.toml.orig" {
             continue;
         }
 
-        writer.start_file(path, Default::default())?;
+        writer.start_file(path, Default::default()).unwrap();
         io::copy(
-            &mut File::open(Path::new(env!("CARGO_MANIFEST_DIR")).join(path))?,
+            &mut File::open(Path::new(env!("CARGO_MANIFEST_DIR")).join(path)).unwrap(),
             &mut writer,
-        )?;
+        )
+        .unwrap();
     }
 
-    writer.finish()?;
-    Ok(())
+    writer.finish().unwrap();
 }