chore: checkpoint before Python removal

vendor/id-arena/Cargo.toml

@@ -0,0 +1,54 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2021"
+name = "id-arena"
+version = "2.3.0"
+authors = [
+    "Nick Fitzgerald <fitzgen@gmail.com>",
+    "Aleksey Kladov <aleksey.kladov@gmail.com>",
+]
+build = false
+autolib = false
+autobins = false
+autoexamples = false
+autotests = false
+autobenches = false
+description = "A simple, id-based arena."
+documentation = "https://docs.rs/id-arena"
+readme = "README.md"
+categories = [
+    "memory-management",
+    "rust-patterns",
+    "no-std",
+]
+license = "MIT/Apache-2.0"
+repository = "https://github.com/fitzgen/id-arena"
+
+[package.metadata.docs.rs]
+features = ["rayon"]
+
+[features]
+default = ["std"]
+std = []
+
+[lib]
+name = "id_arena"
+path = "src/lib.rs"
+
+[[test]]
+name = "readme_up_to_date"
+path = "tests/readme_up_to_date.rs"
+
+[dependencies.rayon]
+version = "1.0.3"
+optional = true