db revision is only available from 0.21 onwards

3 files changed, 4 insertions, 5 deletions

diff --git a/src/database.rs b/src/database.rs
index 5e70ada..34fe4fd 100644
--- a/src/database.rs
+++ b/src/database.rs
@@ -1,7 +1,7 @@
 use std::ops::Drop;
 use std::ptr;
 use std::path::Path;
-use std::ffi::{CStr, CString};
+use std::ffi::CString;
 
 use libc;
 
@@ -124,6 +124,7 @@ impl Database {
         })
     }
 
+    #[cfg(feature = "0.21")]
     pub fn revision(&self) -> Revision {
         let uuid_p: *const libc::c_char = ptr::null();
         let revision = unsafe {
diff --git a/src/filenames.rs b/src/filenames.rs
index 87a1495..d9e5bd8 100644
--- a/src/filenames.rs
+++ b/src/filenames.rs
@@ -4,10 +4,7 @@ use std::marker::PhantomData;
 use std::path::PathBuf;
 use std::ffi::CStr;
 
-use utils::{
-    NewFromPtr,
-};
-
+use utils::NewFromPtr;
 use Database;
 use ffi;
 
diff --git a/tests/main.rs b/tests/main.rs
index ca31225..0407699 100644
--- a/tests/main.rs
+++ b/tests/main.rs
@@ -7,6 +7,7 @@ fn main() {
 
     match notmuch::Database::open(&mail_path.to_str().unwrap().to_string(), notmuch::DatabaseMode::ReadOnly){
         Ok(db) => {
+            
             let rev = db.revision();
             println!("db revision: {:?}", rev);