Update itertools to 13 (#1433)

Replaced deprecated group_by() with suggested replacement chunk_by()


https://docs.rs/itertools/latest/itertools/trait.Itertools.html#method.group_by

Cargo.toml

@@ -58,7 +58,7 @@ humantime = "2.1.0"
 hyper = { version = "0.14", features = [ "full" ] }
 hyper-staticfile = "0.9.6"
 indicatif = { version = "0.17.8", features = ["rayon"] }
-itertools = "0.12.1"
+itertools = "0.13.0"
 libc = "0.2"
 mime_guess = "2.0.5"
 nbd = "0.3.1"

downstairs/src/extent_inner_raw.rs

@@ -838,7 +838,7 @@ impl RawInner {
         let mut writes = 0u64;
         for (slot, group) in block_contexts
             .iter()
-            .group_by(|block_context| {
+            .chunk_by(|block_context| {
                 // We'll be writing to the inactive slot
                 !self.active_context[block_context.block as usize]
             })
@@ -911,7 +911,7 @@ impl RawInner {
         let mut out = Vec::with_capacity(count as usize);
         let mut reads = 0u64;
         for (slot, group) in (block..block + count)
-            .group_by(|block| self.active_context[*block as usize])
+            .chunk_by(|block| self.active_context[*block as usize])
             .into_iter()
         {
             let mut group = group.peekable();
@@ -943,7 +943,7 @@ impl RawInner {
         // Perform writes, which may be broken up by skipped blocks
         let block_size = self.extent_size.block_size_in_bytes() as u64;
         for (skip, mut group) in (0..write.block_contexts.len())
-            .group_by(|i| writes_to_skip.contains(i))
+            .chunk_by(|i| writes_to_skip.contains(i))
             .into_iter()
         {
             if skip {

downstairs/src/extent_inner_sqlite.rs

@@ -527,7 +527,7 @@ impl SqliteMoreInner {
 
         // Perform writes, which may be broken up by skipped blocks
         for (skip, mut group) in (0..write.block_contexts.len())
-            .group_by(|i| writes_to_skip.contains(i))
+            .chunk_by(|i| writes_to_skip.contains(i))
             .into_iter()
         {
             if skip {

upstairs/src/buffer.rs

@@ -151,7 +151,7 @@ impl Buffer {
             .blocks
             .iter()
             .enumerate()
-            .group_by(|(_i, b)| matches!(b, ReadBlockContext::Empty))
+            .chunk_by(|(_i, b)| matches!(b, ReadBlockContext::Empty))
         {
             if empty {
                 continue;