content: [package]
  name = "once_cell"
  version = "1.21.3"
  authors = ["Aleksey Kladov <aleksey.kladov@gmail.com>"]
  license = "MIT OR Apache-2.0"
  edition = "2021"
  rust-version = "1.65"
  
  description = "Single assignment cells and lazy values."
  readme = "README.md"
  documentation = "https://docs.rs/once_cell"
  
  repository = "https://github.com/matklad/once_cell"
  keywords = ["lazy", "static"]
  categories = ["rust-patterns", "memory-management"]
  
  exclude = ["*.png", "*.svg", "/Cargo.lock.msrv", "rustfmt.toml"]
  
  [workspace]
  members = ["xtask"]
  
  [dependencies]
  parking_lot_core = { version = "0.9.10", optional = true, default-features = false }
  portable-atomic = { version = "1.8", optional = true, default-features = false }
  critical-section = { version = "1.1.3", optional = true }
  
  [dev-dependencies]
  regex =  "1.10.6"
  critical-section = { version = "1.1.3", features = ["std"] }
  
  [features]
  default = ["std"]
  
  # Enables `once_cell::sync` module.
  std = ["alloc"]
  
  # Enables `once_cell::race::OnceBox` type.
  alloc = ["race"]
  
  # Enables `once_cell::race` module.
  race = []
  
  # Uses parking_lot to implement once_cell::sync::OnceCell.
  # This makes no speed difference, but makes each OnceCell<T>
  # up to 16 bytes smaller, depending on the size of the T.
  parking_lot = ["dep:parking_lot_core"]
  
  # Uses `portable-atomic` to implement `race` module. in
  # `#![no_std]` mode. Please read `portable-atomic` docs carefully
  # before enabling this feature.
  portable-atomic = ["dep:portable-atomic"]
  
  # Uses `critical-section` to implement `sync` module. in
  # `#![no_std]` mode. Please read `critical-section` docs carefully
  # before enabling this feature.
  # `portable-atomic` feature is enabled for backwards compatibility.
  critical-section = ["dep:critical-section", "portable-atomic"]
  
  # Enables semver-exempt APIs of this crate.
  # At the moment, this feature is unused.
  unstable = []
  
  # Only for backwards compatibility.
  atomic-polyfill = ["critical-section"]
  
  [[example]]
  name = "bench"
  required-features = ["std"]
  
  [[example]]
  name = "bench_acquire"
  required-features = ["std"]
  
  [[example]]
  name = "lazy_static"
  required-features = ["std"]
  
  [[example]]
  name = "reentrant_init_deadlocks"
  required-features = ["std"]
  
  [[example]]
  name = "regex"
  required-features = ["std"]
  
  [[example]]
  name = "test_synchronization"
  required-features = ["std"]
  
  [package.metadata.docs.rs]
  all-features = true
  rustdoc-args = ["--generate-link-to-definition"]
  