diff --git a/src/smbc.rs b/src/smbc.rs
index 51c9994..4050e45 100644
--- a/src/smbc.rs
+++ b/src/smbc.rs
@@ -80,7 +80,7 @@ const SMBC_TRUE: smbc_bool = 1;
 pub struct SmbClient<'a> {
     ctx: *mut SMBCCTX,
     #[allow(dead_code)]
-    auth_fn: &'a for<'b> Fn(&'b str, &'b str) -> (Cow<'a, str>, Cow<'a, str>, Cow<'a, str>),
+    auth_fn: &'a dyn for<'b> Fn(&'b str, &'b str) -> (Cow<'a, str>, Cow<'a, str>, Cow<'a, str>),
 }
 
 // {{{2
@@ -211,19 +211,17 @@ impl<'a> SmbClient<'a> {
         let path = cstring(path)?;
         trace!(target: "smbc", "opening {:?} with {:?}", path, open_fn);
 
-        unsafe {
-            let fd = result_from_ptr_mut(open_fn(self.ctx,
-                                                      path.as_ptr(),
-                                                      try!(options.to_flags()),
-                                                      options.mode))?;
-            if (fd as i64) < 0 {
-                trace!(target: "smbc", "neg fd");
-            }
-            Ok(SmbFile {
-                smbc: &self,
-                fd: fd,
-            })
+        let fd = result_from_ptr_mut(open_fn(self.ctx,
+                                                  path.as_ptr(),
+                                                  options.to_flags()?,
+                                                  options.mode))?;
+        if (fd as i64) < 0 {
+            trace!(target: "smbc", "neg fd");
         }
+        Ok(SmbFile {
+            smbc: &self,
+            fd: fd,
+        })
     }
 
     /// Open read-only [`SmbFile`](struct.SmbFile.html) defined by SMB `path`.
@@ -272,9 +270,8 @@ impl<'a> SmbClient<'a> {
     #[doc(hidden)]
     /// Get metadata for file at `path`
     pub fn metadata<P: AsRef<str>>(&self, path: P) -> Result<()> {
-        let stat_fn = try_ufn!(smbc_getFunctionStat <- self);
-        let path = cstring(path)?;
-
+        let _stat_fn = try_ufn!(smbc_getFunctionStat <- self);
+        let _path = cstring(path)?;
         unimplemented!();
     }
 
@@ -282,7 +279,7 @@ impl<'a> SmbClient<'a> {
     pub fn create_dir<P: AsRef<str>>(&self, path: P) -> Result<()> {
         let mkdir_fn = try_ufn!(smbc_getFunctionMkdir <- self);
         let path = cstring(path)?;
-        to_result_with_le(unsafe { mkdir_fn(self.ctx, path.as_ptr(), 0o755) })?;
+        to_result_with_le(mkdir_fn(self.ctx, path.as_ptr(), 0o755))?;
         Ok(())
     }
 
@@ -296,7 +293,7 @@ impl<'a> SmbClient<'a> {
     pub fn remove_dir<P: AsRef<str>>(&self, path: P) -> Result<()> {
         let rmdir_fn = try_ufn!(smbc_getFunctionRmdir <- self);
         let path = cstring(path)?;
-        to_result_with_le(unsafe { rmdir_fn(self.ctx, path.as_ptr()) })?;
+        to_result_with_le(rmdir_fn(self.ctx, path.as_ptr()))?;
         Ok(())
     }
 } // 2}}}
@@ -426,12 +423,12 @@ impl<'a, 'b> Read for SmbFile<'a, 'b> {
     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
         trace!(target: "smbc", "reading file to buf [{:?};{}]", buf.as_ptr(), buf.len());
         let read_fn = try_ufn!(smbc_getFunctionRead <- self.smbc);
-        let bytes_read = to_result_with_le(unsafe {
+        let bytes_read = to_result_with_le(
             read_fn(self.smbc.ctx,
                     self.fd,
                     buf.as_mut_ptr() as *mut c_void,
                     buf.len() as _)
-        })?;
+        )?;
         Ok(bytes_read as usize)
     }
 } // }}}
@@ -441,12 +438,12 @@ impl<'a, 'b> Write for SmbFile<'a, 'b> {
     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
         trace!(target: "smbc", "writing buf [{:?};{}] to file", buf.as_ptr(), buf.len());
         let write_fn = try_ufn!(smbc_getFunctionWrite <- self.smbc);
-        let bytes_wrote = to_result_with_le(unsafe {
+        let bytes_wrote = to_result_with_le(
             write_fn(self.smbc.ctx,
                      self.fd,
                      buf.as_ptr() as *const c_void,
                      buf.len() as _)
-        })?;
+        )?;
         Ok(bytes_wrote as usize)
     }
 
@@ -466,7 +463,7 @@ impl<'a, 'b> Seek for SmbFile<'a, 'b> {
             SeekFrom::End(p) => (libc::SEEK_END, p as off_t),
             SeekFrom::Current(p) => (libc::SEEK_CUR, p as off_t),
         };
-        let res = to_result_with_errno(unsafe { lseek_fn(self.smbc.ctx, self.fd, off, whence) }, libc::EINVAL)?;
+        let res = to_result_with_errno(lseek_fn(self.smbc.ctx, self.fd, off, whence), libc::EINVAL)?;
         Ok(res as u64)
     }
 } // }}}
diff --git a/src/util.rs b/src/util.rs
index 5dcb930..f218c15 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -16,7 +16,7 @@
 // You should have received a copy of the GNU General Public License
 // along with smbc. If not, see <http://www.gnu.org/licenses/>.
 
-use libc::{self, c_char, c_int};
+use libc::{c_char, c_int};
 
 use std::borrow::Cow;
 use std::ffi::{CStr, CString};