diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 849e551..5186ef0 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -59,22 +59,21 @@ jobs:
 
       # example_shadow cargo run
       - name: Run example_shadow
-        run: cargo run 
+        run: cargo run
         working-directory: ./example_shadow
 
       # build on nightly
-#      - uses: actions-rs/toolchain@v1
-#        with:
-#          toolchain: nightly
-#          override: true
-#      - name: Build on nightly
-#        run: cargo build --release
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          override: true
+      - name: Build on nightly
+        run: cargo build --release
 
   test:
     strategy:
       matrix:
-#        rust: [stable, beta, nightly]
-        rust: [stable, beta]
+        rust: [stable, beta, nightly]
     runs-on: ubuntu-latest
     steps:
       - name: Setup Rust
@@ -114,4 +113,4 @@ jobs:
       - name: Publish
         shell: bash
         run: |
-          cargo publish --token ${{ secrets.CRATES_GITHUB_TOKEN }}
\ No newline at end of file
+          cargo publish --token ${{ secrets.CRATES_GITHUB_TOKEN }}
diff --git a/src/date_time.rs b/src/date_time.rs
index 518e191..337f974 100644
--- a/src/date_time.rs
+++ b/src/date_time.rs
@@ -129,7 +129,7 @@ mod tests {
         .unwrap();
         assert!(regex.is_match(&time));
 
-        println!("local now:{}", time); // 2022-07-14 00:40:05 +08:00
+        println!("local now:{time}"); // 2022-07-14 00:40:05 +08:00
         assert_eq!(time.len(), 26);
     }
 
diff --git a/src/env.rs b/src/env.rs
index 9272f62..daaf73f 100644
--- a/src/env.rs
+++ b/src/env.rs
@@ -189,7 +189,7 @@ mod dep_source_replace {
             if tree.trim().is_empty() {
                 tree.push_str(&val);
             } else {
-                tree = format!("{}\n{}", tree, val);
+                tree = format!("{tree}\n{val}");
             }
         }
         tree
@@ -272,7 +272,7 @@ pub fn new_system_env(std_env: &BTreeMap<String, String>) -> BTreeMap<ShadowCons
     );
 
     if let Err(e) = env.init(std_env) {
-        println!("{}", e);
+        println!("{e}");
     }
     env.map
 }
diff --git a/src/git.rs b/src/git.rs
index 7b2c08c..ffbcbc6 100644
--- a/src/git.rs
+++ b/src/git.rs
@@ -256,7 +256,7 @@ pub fn new_git(
     );
 
     if let Err(e) = git.init(path, std_env) {
-        println!("{}", e);
+        println!("{e}");
     }
 
     git.map
diff --git a/src/lib.rs b/src/lib.rs
old mode 100644
new mode 100755
index 01f57b0..2fc146d
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -269,7 +269,7 @@ impl Shadow {
         F: FnOnce(&File) -> SdResult<()>,
     {
         let desc = r#"/// Below code generated by project custom from by build.rs"#;
-        writeln!(&self.f, "\n{}\n", desc)?;
+        writeln!(&self.f, "\n{desc}\n")?;
         f(&self.f)?;
         Ok(())
     }
@@ -303,7 +303,7 @@ impl Shadow {
         let out = {
             let path = Path::new(out_path.as_str());
             if !out_path.ends_with('/') {
-                path.join(format!("{}/{}", out_path, SHADOW_RS))
+                path.join(format!("{out_path}/{SHADOW_RS}"))
             } else {
                 path.join(SHADOW_RS)
             }
@@ -348,7 +348,7 @@ impl Shadow {
 
     pub fn cargo_rerun_if_env_changed(&self) {
         for k in self.std_env.keys() {
-            println!("cargo:rerun-if-env-changed={}", k);
+            println!("cargo:rerun-if-env-changed={k}");
         }
     }
 
@@ -360,7 +360,7 @@ impl Shadow {
 
     fn gen_const(&mut self) -> SdResult<()> {
         for (k, v) in self.map.clone() {
-            println!("cargo:rerun-if-env-changed={}", k);
+            println!("cargo:rerun-if-env-changed={k}");
             self.write_const(k, v)?;
         }
         Ok(())
@@ -374,7 +374,7 @@ impl Shadow {
 // Create time by:{}"#,
             DateTime::now().human_format()
         );
-        writeln!(&self.f, "{}\n\n", desc)?;
+        writeln!(&self.f, "{desc}\n\n")?;
         Ok(())
     }
 
@@ -405,8 +405,8 @@ impl Shadow {
             ),
         };
 
-        writeln!(&self.f, "{}", desc)?;
-        writeln!(&self.f, "{}\n", define)?;
+        writeln!(&self.f, "{desc}")?;
+        writeln!(&self.f, "{define}\n")?;
         Ok(())
     }
 
@@ -433,9 +433,9 @@ impl Shadow {
                 }
             }
         };
-        writeln!(&self.f, "{}\n", ver_fn)?;
-        writeln!(&self.f, "{}\n", clap_ver_fn)?;
-        writeln!(&self.f, "{}\n", clap_long_ver_fn)?;
+        writeln!(&self.f, "{ver_fn}\n")?;
+        writeln!(&self.f, "{clap_ver_fn}\n")?;
+        writeln!(&self.f, "{clap_long_ver_fn}\n")?;
 
         Ok(vec![BUILD_CONST_VERSION, BUILD_CONST_CLAP_LONG_VERSION])
     }
@@ -459,11 +459,10 @@ impl Shadow {
             "/// print build in method\n\
             #[allow(dead_code)]\n\
             pub fn print_build_in() {\
-            {{}}\
-}\n",
-            print_val,
+            {{print_val}}\
+            }\n",
         );
-        writeln!(&self.f, "{}", everything_define)?;
+        writeln!(&self.f, "{everything_define}")?;
 
         Ok(())
     }
@@ -480,14 +479,14 @@ mod tests {
         let shadow = fs::read_to_string("./shadow.rs")?;
         assert!(!shadow.is_empty());
         assert!(shadow.lines().count() > 0);
-        println!("{}", shadow);
+        println!("{shadow}");
         Ok(())
     }
 
     #[test]
     fn test_env() {
         for (k, v) in std::env::vars() {
-            println!("K:{},V:{}", k, v);
+            println!("K:{k},V:{v}");
         }
     }
 }