Merge from main.

I had to change `#[forbid(rust_2018_idioms)]` to
`#[deny(rust_2018_idioms)]` in order for `quick_error!` to compile.

Author: avoidscorn

Diff for: Cargo.lock

@@ -60,7 +60,7 @@ prodash-render-line = ["prodash/render-line"]
 anyhow = "1.0.31"
 
 gitoxide-core = { version = "^0.4.0", path = "gitoxide-core" }
-git-features = { version = "^0.5.0", path = "git-features" }
+git-features = { version = "^0.6.0", path = "git-features" }
 # just for feature configuration
 git-transport = { optional = true, version = "^0.2.0", path = "git-transport" }
 
@@ -70,7 +70,7 @@ prodash = { version = "10.0.0", optional = true, default-features = false }
 atty = { version = "0.2.14", optional = true, default-features = false }
 env_logger = { version = "0.7.1", optional = true, default-features = false, features = ["humantime", "termcolor", "atty"] }
 crosstermion = { version = "0.3.0", optional = true, default-features = false }
-futures-lite = { version = "0.1.10", optional = true, default-features = false }
+futures-lite = { version = "1.4.0", optional = true, default-features = false, features = ["std"] }
 
 [profile.release]
 overflow-checks = false

Diff for: Cargo.toml

@@ -118,7 +118,7 @@ Please see _'Development Status'_ for a listing of all crates and their capabili
     * [x] abort early for ls-remote capabilities
     * [x] packfile negotiation
       * [x] delegate can support for all fetch features, including shallow, deepen, etc.
-      * [ ] receive parsed shallow refs
+      * [x] receive parsed shallow refs
   * [ ] push
   * [ ] API documentation with examples
 
@@ -144,7 +144,8 @@ Please see _'Development Status'_ for a listing of all crates and their capabili
     * [x] git://<service>
       * [x] V1 handshake
         * [x] send values + receive data with sidebands
-        * [ ] support for receiving 'shallow' refs
+        * [ ] ~~support for receiving 'shallow' refs in case the remote repository is shallow itself (I presume)~~
+          * Since V2 doesn't seem to support that, let's skip this until there is an actual need. No completionist :D
       * [x] V2 handshake
         * [x] send command request, receive response with sideband support
     * [x] http(s)://<service>
@@ -461,6 +462,9 @@ From there, we can derive a few rules to try adhere to:
 * **Packfiles cannot load files bigger than 2^31 or 2^32 on 32 bit systems**
   * As these systems cannot address more memory than that.
   * _potential remedy_: implement a sliding window to map and unmap portions of the file as needed.
+* **Objects larger than 32bits cannot be loaded on 32 bit systems**
+  * in-memory representations objects cannot handle objects greater than the amount of addressable memory.
+  * This should not affect git LFS though.
 * **CRC32** implementation doesn't use SIMD
   * Probably at no cost one could upgrade to the **crc32fast** crate, but it looks unmaintained and has more code.
 * **git-url** _might_ be more restrictive than what git allows as for the most part, it uses a browser grade URL parser.

Diff for: README.md

@@ -4,32 +4,32 @@ use crate::{CommitData, Graph, GraphFile};
 use git_object::borrowed;
 
 impl Graph {
-    pub fn commit_at(&self, pos: GraphPosition) -> CommitData {
+    pub fn commit_at(&self, pos: GraphPosition) -> CommitData<'_> {
         let r = self.lookup_by_pos(pos);
         r.file.commit_at(r.lex_pos)
     }
 
-    pub fn commit_by_id(&self, id: borrowed::Id) -> Option<CommitData> {
+    pub fn commit_by_id(&self, id: borrowed::Id<'_>) -> Option<CommitData<'_>> {
         let r = self.lookup_by_id(id)?;
         Some(r.file.commit_at(r.lex_pos))
     }
 
-    pub fn id_at(&self, pos: GraphPosition) -> borrowed::Id {
+    pub fn id_at(&self, pos: GraphPosition) -> borrowed::Id<'_> {
         let r = self.lookup_by_pos(pos);
         r.file.id_at(r.lex_pos)
     }
 
     /// Iterate over commits in unsorted order.
-    pub fn iter_commits(&self) -> impl Iterator<Item = CommitData> {
+    pub fn iter_commits(&self) -> impl Iterator<Item = CommitData<'_>> {
         self.files.iter().flat_map(|file| file.iter_commits())
     }
 
     /// Iterate over commit IDs in unsorted order.
-    pub fn iter_ids(&self) -> impl Iterator<Item = borrowed::Id> {
+    pub fn iter_ids(&self) -> impl Iterator<Item = borrowed::Id<'_>> {
         self.files.iter().flat_map(|file| file.iter_ids())
     }
 
-    pub fn lookup(&self, id: borrowed::Id) -> Option<GraphPosition> {
+    pub fn lookup(&self, id: borrowed::Id<'_>) -> Option<GraphPosition> {
         Some(self.lookup_by_id(id)?.graph_pos)
     }
 
@@ -39,7 +39,7 @@ impl Graph {
 }
 
 impl Graph {
-    fn lookup_by_id(&self, id: borrowed::Id) -> Option<LookupByIdResult> {
+    fn lookup_by_id(&self, id: borrowed::Id<'_>) -> Option<LookupByIdResult<'_>> {
         let mut current_file_start = 0;
         for file in self.files.iter() {
             if let Some(lex_pos) = file.lookup(id) {
@@ -54,7 +54,7 @@ impl Graph {
         None
     }
 
-    fn lookup_by_pos(&self, pos: GraphPosition) -> LookupByPositionResult {
+    fn lookup_by_pos(&self, pos: GraphPosition) -> LookupByPositionResult<'_> {
         let mut remaining = pos.0;
         for file in self.files.iter() {
             match remaining.checked_sub(file.num_commits()) {