diff --git a/examples/test.rs b/examples/test.rs
index 791d725..dd27b9e 100644
--- a/examples/test.rs
+++ b/examples/test.rs
@@ -1,5 +1,6 @@
 extern crate mystem;
 
+#[allow(unused_must_use)]
 fn main() -> Result<(), mystem::AppError> {
     let mut instance = mystem::MyStem::new()?;
     for stem in instance.stemming("Связался с лучшим - подохни как все.".into())?
@@ -7,7 +8,6 @@ fn main() -> Result<(), mystem::AppError> {
         println!("{} is a lexeme of {}", stem.lex, stem.text)
     }
 
-    #[allow(unused_must_use)]
     instance.terminate();
     Ok(())
 }
diff --git a/src/lib.rs b/src/lib.rs
index 01caa0f..253d80e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -8,7 +8,6 @@ use std::str::FromStr;
 use subprocess::{Popen, PopenConfig, PopenError, Redirection};
 #[macro_use]
 extern crate log;
-use std::collections::{HashMap, HashSet};
 
 pub use error::*;
 pub use grammems::*;
@@ -90,6 +89,7 @@ impl MyStem {
     ///     // как is a lexeme of как
     ///     // все is a lexeme of все
     /// ```
+    #[allow(unused_must_use)]
     pub fn stemming(&mut self, text: String) -> Result<Vec<Stemming>, AppError> {
         if let Some(exit_status) = self.process.poll() {
             warn!(