diff --git a/server/Cargo.lock b/server/Cargo.lock
index bac0b20..e31c994 100644
--- a/server/Cargo.lock
+++ b/server/Cargo.lock
@@ -1492,9 +1492,9 @@ checksum = "c6fa0831dd7cc608c38a5e323422a0077678fa5744aa2be4ad91c4ece8eec8d5"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.49"
+version = "1.0.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57a8eca9f9c4ffde41714334dee777596264c7825420f521abc92b5b5deb63a5"
+checksum = "7b368fba921b0dce7e60f5e04ec15e565b3303972b42bcfde1d0713b881959eb"
 dependencies = [
  "unicode-ident",
 ]
diff --git a/server/db/dir/reader.rs b/server/db/dir/reader.rs
index a6d55ed..7fbc87b 100644
--- a/server/db/dir/reader.rs
+++ b/server/db/dir/reader.rs
@@ -195,9 +195,7 @@ unsafe impl Sync for OpenFile {}
 
 impl Drop for OpenFile {
     fn drop(&mut self) {
-        if let Err(e) =
-            unsafe { nix::sys::mman::munmap(self.map_ptr as *mut std::ffi::c_void, self.map_len) }
-        {
+        if let Err(e) = unsafe { nix::sys::mman::munmap(self.map_ptr, self.map_len) } {
             // This should never happen.
             log::error!(
                 "unable to munmap {}, {:?} len {}: {}",
@@ -344,7 +342,7 @@ impl ReaderInt {
 
         if let Err(e) = unsafe {
             nix::sys::mman::madvise(
-                map_ptr as *mut libc::c_void,
+                map_ptr,
                 map_len.get(),
                 nix::sys::mman::MmapAdvise::MADV_SEQUENTIAL,
             )
diff --git a/server/db/upgrade/v4_to_v5.rs b/server/db/upgrade/v4_to_v5.rs
index d74fe8e..95dad30 100644
--- a/server/db/upgrade/v4_to_v5.rs
+++ b/server/db/upgrade/v4_to_v5.rs
@@ -139,7 +139,7 @@ pub fn run(_args: &super::Args, tx: &rusqlite::Transaction) -> Result<(), Error>
             .extend_from_slice(&dir_uuid.0.as_bytes()[..]);
         match (open_id, open_uuid) {
             (Some(id), Some(uuid)) => {
-                let mut o = db_meta.last_complete_open.mut_or_insert_default();
+                let o = db_meta.last_complete_open.mut_or_insert_default();
                 o.id = id;
                 o.uuid.extend_from_slice(&uuid.0.as_bytes()[..]);
             }