diff --git a/.github/workflows/action-rs/grcov.yml b/.github/workflows/action-rs/grcov.yml
new file mode 100644
index 0000000..07c7795
--- /dev/null
+++ b/.github/workflows/action-rs/grcov.yml
@@ -0,0 +1,7 @@
+branch: true
+ignore-not-existing: true
+llvm: true
+filter: covered
+output-type: lcov
+output-path: ./lcov.info
+prefix-dir: /home/user/build
\ No newline at end of file
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
new file mode 100644
index 0000000..d3a9bfd
--- /dev/null
+++ b/.github/workflows/rust.yml
@@ -0,0 +1,109 @@
+name: Rust
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    name: Build and Test
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+    - name: Set up Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: nightly
+        override: true
+    - name: Run tests
+      uses: actions-rs/cargo@v1
+      with:
+        command: test
+      env:
+        CARGO_INCREMENTAL: '0'
+        RUSTFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests'
+        RUSTDOCFLAGS: '-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Clink-dead-code -Coverflow-checks=off -Cpanic=abort -Zpanic_abort_tests'
+    - name: Run grcov
+      id: coverage
+      uses: actions-rs/grcov@v0.1
+    - name: Coveralls upload
+      uses: coverallsapp/github-action@master
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        path-to-lcov: ${{ steps.coverage.outputs.report }}
+    - name: Run clippy
+      uses: actions-rs/cargo@v1
+      with:
+        command: clippy
+        args: --verbose
+    - name: Run formatting
+      uses: actions-rs/cargo@v1
+      with:
+        command: fmt
+        args: --check
+    - name: Build release
+      uses: actions-rs/cargo@v1
+      with:
+        command: build
+        args: --release
+    - name: Upload artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: uuid-remapper-x86_64-linux
+        path: target/release/uuid-remapper
+
+  windows:
+    runs-on: windows-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          override: true
+      - name: Test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --release
+      - name: Upload artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: uuid-remapper-x86_64-windows.exe
+          path: target/release/uuid-remapper.exe
+
+  macos:
+    runs-on: macos-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          override: true
+      - name: Test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --release
+      - name: Upload artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: uuid-remapper-x86_64-macos
+          path: target/release/uuid-remapper
\ No newline at end of file
diff --git a/src/anvil.rs b/src/anvil.rs
index 1d4c404..d92c970 100644
--- a/src/anvil.rs
+++ b/src/anvil.rs
@@ -159,9 +159,11 @@ impl Anvil {
             .next()
             .and_then(|s| s.parse::<i64>().ok())
             .context("Invalid z coordinate")?;
-        Ok(self
-            .path
-            .with_file_name(format!("c.{}.{}.mcc", x * 32 + local.0 as i64, z * 32 + local.1 as i64)))
+        Ok(self.path.with_file_name(format!(
+            "c.{}.{}.mcc",
+            x * 32 + local.0 as i64,
+            z * 32 + local.1 as i64
+        )))
     }
 
     /// Open an anvil file
@@ -317,12 +319,14 @@ fn test() {
     assert_eq!(chunk.timestamp, chunk_read.timestamp);
     assert_eq!(chunk.uncompressed, chunk_read.uncompressed);
     assert_eq!(true, chunk_read.external);
-    anvil.write(&Chunk {
-        external: true,
-        location: (0, 0),
-        timestamp: 0,
-        uncompressed: vec![0; 1024],
-    }).unwrap();
+    anvil
+        .write(&Chunk {
+            external: true,
+            location: (0, 0),
+            timestamp: 0,
+            uncompressed: vec![0; 1024],
+        })
+        .unwrap();
     assert!(!Path::new("c.-32.-32.mcc").exists());
 
     // TODO: Poor test coverage
diff --git a/src/main.rs b/src/main.rs
index 98d06ba..b645b7f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -46,11 +46,15 @@ fn main() {
         .unwrap();
 
     if std::mem::size_of::<usize>() < 8 {
-        log::error!("usize is less than 64-bit, you may encounter integer overflow when \
-        dealing with some malformed NBT");
+        log::error!(
+            "usize is less than 64-bit, you may encounter integer overflow when \
+        dealing with some malformed NBT"
+        );
         log::error!("Do not report this issue to the author, as it is not worth fixing");
-        log::error!("Since Minecraft almost can't run on 32-bit devices, \
-        running this program, which is designed to work with Minecraft, is meaningless");
+        log::error!(
+            "Since Minecraft almost can't run on 32-bit devices, \
+        running this program, which is designed to work with Minecraft, is meaningless"
+        );
     }
 
     let path = cli.path;
diff --git a/src/mapping.rs b/src/mapping.rs
index f4047ab..134fd6e 100644
--- a/src/mapping.rs
+++ b/src/mapping.rs
@@ -155,35 +155,35 @@ pub fn get_mapping(kind: MappingKind, path: &Path) -> anyhow::Result<HashMap<Uui
         MappingKind::Json => {
             let map = std::fs::read_to_string(path)?;
             Ok(serde_json::from_str(&map)?)
-        },
+        }
         MappingKind::ListToOffline => {
             let names = load_name_list(path)?;
             Ok(a_compose_b_inverse(
                 &online_uuids(&names),
                 &offline_uuids(&names),
             ))
-        },
+        }
         MappingKind::ListToOnline => {
             let names = load_name_list(path)?;
             Ok(a_compose_b_inverse(
                 &offline_uuids(&names),
                 &online_uuids(&names),
             ))
-        },
+        }
         MappingKind::UsercacheToOffline => {
             let names = load_name_list_from_usercache(path)?;
             Ok(a_compose_b_inverse(
                 &online_uuids(&names),
                 &offline_uuids(&names),
             ))
-        },
+        }
         MappingKind::UsercacheToOnline => {
             let names = load_name_list_from_usercache(path)?;
             Ok(a_compose_b_inverse(
                 &offline_uuids(&names),
                 &online_uuids(&names),
             ))
-        },
+        }
         MappingKind::OfflineRenameCsv => load_offline_rename(path),
     }
 }
@@ -199,8 +199,14 @@ fn test() {
     assert_eq!(
         get_mapping(MappingKind::Csv, &csv_path).unwrap(),
         vec![
-            (Uuid::from_str("00000000-0000-0000-0000-000000000000").unwrap(), Uuid::from_str("00000000-0000-0000-0000-000000000001").unwrap()),
-            (Uuid::from_str("00000000-0000-0000-0000-000000000002").unwrap(), Uuid::from_str("00000000-0000-0000-0000-000000000003").unwrap()),
+            (
+                Uuid::from_str("00000000-0000-0000-0000-000000000000").unwrap(),
+                Uuid::from_str("00000000-0000-0000-0000-000000000001").unwrap()
+            ),
+            (
+                Uuid::from_str("00000000-0000-0000-0000-000000000002").unwrap(),
+                Uuid::from_str("00000000-0000-0000-0000-000000000003").unwrap()
+            ),
         ]
         .into_iter()
         .collect()
@@ -216,8 +222,14 @@ fn test() {
     assert_eq!(
         get_mapping(MappingKind::Json, &json_path).unwrap(),
         vec![
-            (Uuid::from_str("00000000-0000-0000-0000-000000000000").unwrap(), Uuid::from_str("00000000-0000-0000-0000-000000000001").unwrap()),
-            (Uuid::from_str("00000000-0000-0000-0000-000000000002").unwrap(), Uuid::from_str("00000000-0000-0000-0000-000000000003").unwrap()),
+            (
+                Uuid::from_str("00000000-0000-0000-0000-000000000000").unwrap(),
+                Uuid::from_str("00000000-0000-0000-0000-000000000001").unwrap()
+            ),
+            (
+                Uuid::from_str("00000000-0000-0000-0000-000000000002").unwrap(),
+                Uuid::from_str("00000000-0000-0000-0000-000000000003").unwrap()
+            ),
         ]
         .into_iter()
         .collect()
@@ -229,11 +241,7 @@ fn test() {
     std::fs::write(&list_path, list_file).unwrap();
     assert_eq!(
         load_name_list(&list_path).unwrap(),
-        vec![
-            "a".to_string(),
-            "b".to_string(),
-            "c".to_string(),
-        ]
+        vec!["a".to_string(), "b".to_string(), "c".to_string(),]
     );
     std::fs::remove_file(list_path).unwrap();
 
@@ -242,11 +250,7 @@ fn test() {
     std::fs::write(&usercache_path, usercache_file).unwrap();
     assert_eq!(
         load_name_list_from_usercache(&usercache_path).unwrap(),
-        vec![
-            "a".to_string(),
-            "b".to_string(),
-            "c".to_string(),
-        ]
+        vec!["a".to_string(), "b".to_string(), "c".to_string(),]
     );
     std::fs::remove_file(usercache_path).unwrap();
 
@@ -264,6 +268,9 @@ fn test() {
     );
     std::fs::remove_file(offline_rename_path).unwrap();
 
-    assert_eq!(offline_uuid("CaveNightingale"), Uuid::from_str("2d318504-1a7b-39dc-8c18-44df798a5c06").unwrap());
+    assert_eq!(
+        offline_uuid("CaveNightingale"),
+        Uuid::from_str("2d318504-1a7b-39dc-8c18-44df798a5c06").unwrap()
+    );
     // Online UUIDs are not tested because it requires network access
 }
diff --git a/src/nbt.rs b/src/nbt.rs
index f8a2915..3192319 100644
--- a/src/nbt.rs
+++ b/src/nbt.rs
@@ -371,7 +371,7 @@ fn test_visit_nbt() {
         de.get("yyUUIDLeast"),
         Some(&Value::Long(FROM.as_u64_pair().1 as i64))
     ); // Should not be replaced
-    // No root tag
+       // No root tag
     let mut nbt = vec![];
     assert!(visit_nbt(&mut nbt, &mut |_| None).is_err());
     // Non-long UUIDMost/UUIDLeast
diff --git a/src/remap.rs b/src/remap.rs
index 068eee2..1d296cf 100644
--- a/src/remap.rs
+++ b/src/remap.rs
@@ -151,5 +151,6 @@ fn test() {
                 None
             }
         },
-    ).unwrap();
+    )
+    .unwrap();
 }
diff --git a/src/text.rs b/src/text.rs
index 4ae4d78..fe86a4a 100644
--- a/src/text.rs
+++ b/src/text.rs
@@ -47,7 +47,7 @@ pub fn visit_text(text: &mut [u8], cb: &impl Fn(Uuid) -> Option<Uuid>) {
         macro_rules! dfa_trans_table {
             {$( $current:pat => $next:expr; $other:expr; )*} => {
                 matched = match matched {
-                    $($current => if text[i] == b'_' {
+                    $($current => if text[i] == b'-' {
                         $next
                     } else {
                         $other