update dependencies, update edition

Cargo.toml

@@ -10,7 +10,7 @@ homepage = "https://github.com/quickwit-oss/tantivy"
 repository = "https://github.com/quickwit-oss/tantivy"
 readme = "README.md"
 keywords = ["search", "information", "retrieval"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 oneshot = "0.1.3"

src/core/executor.rs

@@ -1,3 +1,5 @@
+use std::sync::atomic::AtomicUsize;
+
 use crossbeam::channel;
 use rayon::{ThreadPool, ThreadPoolBuilder};
 
@@ -47,16 +49,17 @@ impl Executor {
         match self {
             Executor::SingleThread => args.map(f).collect::<crate::Result<_>>(),
             Executor::ThreadPool(pool) => {
-                let args_with_indices: Vec<(usize, A)> = args.enumerate().collect();
-                let num_fruits = args_with_indices.len();
+                // let args_with_indices: Vec<(usize, A)> = args.enumerate().collect();
+                let args: Vec<A> = args.collect();
+                let num_fruits = args.len();
                 let fruit_receiver = {
                     let (fruit_sender, fruit_receiver) = channel::unbounded();
                     pool.scope(|scope| {
-                        for arg_with_idx in args_with_indices {
+                        for (idx, arg) in args.into_iter().enumerate() {
+                            let idx = AtomicUsize::new(idx);
                             scope.spawn(|_| {
-                                let (idx, arg) = arg_with_idx;
                                 let fruit = f(arg);
-                                if let Err(err) = fruit_sender.send((idx, fruit)) {
+                                if let Err(err) = fruit_sender.send((idx.into_inner(), fruit)) {
                                     error!(
                                         "Failed to send search task. It probably means all search \
                                          threads have panicked. {:?}",

src/indexer/segment_updater.rs

@@ -1,6 +1,5 @@
 use std::borrow::BorrowMut;
 use std::collections::HashSet;
-use std::io;
 use std::io::Write;
 use std::ops::Deref;
 use std::path::PathBuf;
@@ -27,7 +26,7 @@ use crate::indexer::{
     SegmentSerializer,
 };
 use crate::schema::Schema;
-use crate::{FutureResult, Opstamp, TantivyError};
+use crate::{FutureResult, Opstamp};
 
 const NUM_MERGE_THREADS: usize = 4;
 
@@ -73,10 +72,12 @@ fn save_metas(metas: &IndexMeta, directory: &dyn Directory) -> crate::Result<()>
     let mut buffer = serde_json::to_vec_pretty(metas)?;
     // Just adding a new line at the end of the buffer.
     writeln!(&mut buffer)?;
-    fail_point!("save_metas", |msg| Err(TantivyError::from(io::Error::new(
-        io::ErrorKind::Other,
-        msg.unwrap_or_else(|| "Undefined".to_string())
-    ))));
+    fail_point!("save_metas", |msg| Err(crate::TantivyError::from(
+        std::io::Error::new(
+            std::io::ErrorKind::Other,
+            msg.unwrap_or_else(|| "Undefined".to_string())
+        )
+    )));
     directory.sync_directory()?;
     directory.atomic_write(&META_FILEPATH, &buffer[..])?;
     debug!("Saved metas {:?}", serde_json::to_string_pretty(&metas));