diff --git a/rust-toolchain b/rust-toolchain
new file mode 100644
index 0000000..bf867e0
--- /dev/null
+++ b/rust-toolchain
@@ -0,0 +1 @@
+nightly
diff --git a/rustfmt.toml b/rustfmt.toml
index 7bba11e..2ac63bb 100644
--- a/rustfmt.toml
+++ b/rustfmt.toml
@@ -6,3 +6,5 @@ reorder_imports = true
 reorder_modules = true
 use_try_shorthand = true
 use_small_heuristics = "Max"
+unstable_features = true
+force_multiline_blocks = true
diff --git a/src/error.rs b/src/error.rs
index 62a6b55..571507e 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -103,31 +103,39 @@ impl fmt::Display for Error {
                     .detail("This is unadvisable since ouch does compressions in-memory.")
                     .hint("Use a more appropriate tool for this, such as rsync.")
             }
-            Error::MissingArgumentsForCompression => FinalError::with_title("Could not compress")
-                .detail("The compress command requires at least 2 arguments")
-                .hint("You must provide:")
-                .hint("  - At least one input argument.")
-                .hint("  - The output argument.")
-                .hint("")
-                .hint("Example: `ouch compress image.png img.zip`"),
-            Error::MissingArgumentsForDecompression => FinalError::with_title("Could not decompress")
-                .detail("The compress command requires at least one argument")
-                .hint("You must provide:")
-                .hint("  - At least one input argument.")
-                .hint("")
-                .hint("Example: `ouch decompress imgs.tar.gz`"),
-            Error::InternalError => FinalError::with_title("InternalError :(")
-                .detail("This should not have happened")
-                .detail("It's probably our fault")
-                .detail("Please help us improve by reporting the issue at:")
-                .detail(format!("    {}https://github.com/vrmiguel/ouch/issues ", cyan())),
+            Error::MissingArgumentsForCompression => {
+                FinalError::with_title("Could not compress")
+                    .detail("The compress command requires at least 2 arguments")
+                    .hint("You must provide:")
+                    .hint("  - At least one input argument.")
+                    .hint("  - The output argument.")
+                    .hint("")
+                    .hint("Example: `ouch compress image.png img.zip`")
+            }
+            Error::MissingArgumentsForDecompression => {
+                FinalError::with_title("Could not decompress")
+                    .detail("The compress command requires at least one argument")
+                    .hint("You must provide:")
+                    .hint("  - At least one input argument.")
+                    .hint("")
+                    .hint("Example: `ouch decompress imgs.tar.gz`")
+            }
+            Error::InternalError => {
+                FinalError::with_title("InternalError :(")
+                    .detail("This should not have happened")
+                    .detail("It's probably our fault")
+                    .detail("Please help us improve by reporting the issue at:")
+                    .detail(format!("    {}https://github.com/vrmiguel/ouch/issues ", cyan()))
+            }
             Error::OofError(err) => FinalError::with_title(err),
             Error::IoError { reason } => FinalError::with_title(reason),
-            Error::CompressionTypo => FinalError::with_title("Possible typo detected").hint(format!(
-                "Did you mean '{}ouch compress{}'?",
-                magenta(),
-                reset()
-            )),
+            Error::CompressionTypo => {
+                FinalError::with_title("Possible typo detected").hint(format!(
+                    "Did you mean '{}ouch compress{}'?",
+                    magenta(),
+                    reset()
+                ))
+            }
             Error::UnknownExtensionError(_) => todo!(),
             Error::AlreadyExists => todo!(),
             Error::InvalidZipArchive(_) => todo!(),
diff --git a/src/oof/error.rs b/src/oof/error.rs
index 6dd4783..299601a 100644
--- a/src/oof/error.rs
+++ b/src/oof/error.rs
@@ -31,18 +31,22 @@ impl fmt::Display for OofError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         // TODO: implement proper debug messages
         match self {
-            OofError::FlagValueConflict { flag, previous_value, new_value } => write!(
-                f,
-                "CLI flag value conflicted for flag '--{}', previous: {:?}, new: {:?}.",
-                flag.long, previous_value, new_value
-            ),
+            OofError::FlagValueConflict { flag, previous_value, new_value } => {
+                write!(
+                    f,
+                    "CLI flag value conflicted for flag '--{}', previous: {:?}, new: {:?}.",
+                    flag.long, previous_value, new_value
+                )
+            }
             OofError::InvalidUnicode(flag) => write!(f, "{:?} is not valid Unicode.", flag),
             OofError::UnknownShortFlag(ch) => write!(f, "Unknown argument '-{}'", ch),
-            OofError::MisplacedShortArgFlagError(ch) => write!(
-                f,
-                "Invalid placement of `-{}`.\nOnly the last letter in a sequence of short flags can take values.",
-                ch
-            ),
+            OofError::MisplacedShortArgFlagError(ch) => {
+                write!(
+                    f,
+                    "Invalid placement of `-{}`.\nOnly the last letter in a sequence of short flags can take values.",
+                    ch
+                )
+            }
             OofError::MissingValueToFlag(flag) => write!(f, "Flag {} takes value but none was supplied.", flag),
             OofError::DuplicatedFlag(flag) => write!(f, "Duplicated usage of {}.", flag),
             OofError::UnknownLongFlag(flag) => write!(f, "Unknown argument '--{}'", flag),