[DO NOT MERGE] Try vendoring hashbrown instead of using git

Author: jmillikin

library/Cargo.lock

@@ -126,8 +126,6 @@ dependencies = [
 [[package]]
 name = "hashbrown"
 version = "0.17.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed5909b6e89a2db4456e54cd5f673791d7eca6732202bbf2a9cc504fe2f9b84a"
 dependencies = [
  "foldhash",
  "rustc-std-workspace-alloc",

library/std/Cargo.toml

@@ -20,7 +20,7 @@ panic_unwind = { path = "../panic_unwind", optional = true }
 panic_abort = { path = "../panic_abort" }
 core = { path = "../core", public = true }
 unwind = { path = "../unwind" }
-hashbrown = { version = "0.17.1", default-features = false, features = [
+hashbrown = { path = "../../vendor/hashbrown-0.17.1", default-features = false, features = [
     'rustc-dep-of-std',
 ] }
 std_detect = { path = "../std_detect", public = true }

vendor/hashbrown-0.17.1/.cargo-ok

@@ -0,0 +1 @@
+{"v":1}

vendor/hashbrown-0.17.1/.cargo_vcs_info.json

@@ -0,0 +1,6 @@
+{
+  "git": {
+    "sha1": "c62a63a61b7caf2de8f9ecb7b06a66b0ab6bdf3d"
+  },
+  "path_in_vcs": ""
+}

vendor/hashbrown-0.17.1/.gitignore

@@ -0,0 +1,3 @@
+/target
+**/*.rs.bk
+Cargo.lock