1. The Unstable Book
  2. 1. Compiler flags
    1. 1.1. branch_protection
    2. 1.2. cf_protection
    3. 1.3. check_cfg
    4. 1.4. codegen_backend
    5. 1.5. control_flow_guard
    6. 1.6. debug_info_for_profiling
    7. 1.7. dump_mono_stats
    8. 1.8. dump_mono_stats_format
    9. 1.9. dwarf_version
    10. 1.10. dylib_lto
    11. 1.11. emit_stack_sizes
    12. 1.12. export_executable_symbols
    13. 1.13. extern_options
    14. 1.14. instrument_xray
    15. 1.15. location_detail
    16. 1.16. move_size_limit
    17. 1.17. no_unique_section_names
    18. 1.18. profile
    19. 1.19. profile_sample_use
    20. 1.20. remap_cwd_prefix
    21. 1.21. report_time
    22. 1.22. sanitizer
    23. 1.23. self_profile
    24. 1.24. self_profile_events
    25. 1.25. src_hash_algorithm
    26. 1.26. temps_dir
    27. 1.27. tiny_const_eval_limit
    28. 1.28. tls_model
    29. 1.29. unsound_mir_opts
    30. 1.30. virtual_function_elimination
  3. 2. Language features
    1. 2.1. aarch64_ver_target_feature
    2. 2.2. abi_amdgpu_kernel
    3. 2.3. abi_avr_interrupt
    4. 2.4. abi_c_cmse_nonsecure_call
    5. 2.5. abi_msp430_interrupt
    6. 2.6. abi_ptx
    7. 2.7. abi_thiscall
    8. 2.8. abi_unadjusted
    9. 2.9. abi_vectorcall
    10. 2.10. abi_x86_interrupt
    11. 2.11. adt_const_params
    12. 2.12. alloc_error_handler
    13. 2.13. allocator_internals
    14. 2.14. allow_internal_unsafe
    15. 2.15. allow_internal_unstable
    16. 2.16. anonymous_lifetime_in_impl_trait
    17. 2.17. arbitrary_self_types
    18. 2.18. arm_target_feature
    19. 2.19. asm_const
    20. 2.20. asm_experimental_arch
    21. 2.21. asm_unwind
    22. 2.22. associated_const_equality
    23. 2.23. associated_type_bounds
    24. 2.24. associated_type_defaults
    25. 2.25. async_closure
    26. 2.26. async_fn_in_trait
    27. 2.27. auto_traits
    28. 2.28. avx512_target_feature
    29. 2.29. box_patterns
    30. 2.30. bpf_target_feature
    31. 2.31. c_unwind
    32. 2.32. c_variadic
    33. 2.33. cfg_sanitize
    34. 2.34. cfg_target_abi
    35. 2.35. cfg_target_compact
    36. 2.36. cfg_target_has_atomic
    37. 2.37. cfg_target_has_atomic_equal_alignment
    38. 2.38. cfg_target_thread_local
    39. 2.39. cfg_version
    40. 2.40. closure_lifetime_binder
    41. 2.41. closure_track_caller
    42. 2.42. cmse_nonsecure_entry
    43. 2.43. collapse_debuginfo
    44. 2.44. compiler_builtins
    45. 2.45. const_async_blocks
    46. 2.46. const_closures
    47. 2.47. const_eval_limit
    48. 2.48. const_extern_fn
    49. 2.49. const_fn_floating_point_arithmetic
    50. 2.50. const_for
    51. 2.51. const_mut_refs
    52. 2.52. const_precise_live_drops
    53. 2.53. const_refs_to_cell
    54. 2.54. const_trait_impl
    55. 2.55. const_try
    56. 2.56. custom_inner_attributes
    57. 2.57. custom_mir
    58. 2.58. custom_test_frameworks
    59. 2.59. debugger_visualizer
    60. 2.60. decl_macro
    61. 2.61. default_type_parameter_fallback
    62. 2.62. deprecated_safe
    63. 2.63. deprecated_suggestion
    64. 2.64. do_not_recommend
    65. 2.65. doc_auto_cfg
    66. 2.66. doc_cfg
    67. 2.67. doc_cfg_hide
    68. 2.68. doc_masked
    69. 2.69. doc_notable_trait
    70. 2.70. dropck_eyepatch
    71. 2.71. dyn_star
    72. 2.72. ermsb_target_feature
    73. 2.73. exclusive_range_pattern
    74. 2.74. exhaustive_patterns
    75. 2.75. extended_varargs_abi_support
    76. 2.76. extern_types
    77. 2.77. ffi_const
    78. 2.78. ffi_pure
    79. 2.79. ffi_returns_twice
    80. 2.80. fn_align
    81. 2.81. fundamental
    82. 2.82. generator_clone
    83. 2.83. generators
    84. 2.84. generic_arg_infer
    85. 2.85. generic_assert
    86. 2.86. generic_associated_types_extended
    87. 2.87. generic_const_exprs
    88. 2.88. half_open_range_patterns_in_slices
    89. 2.89. hexagon_target_feature
    90. 2.90. if_let_guard
    91. 2.91. impl_trait_in_fn_trait_return
    92. 2.92. impl_trait_projections
    93. 2.93. imported_main
    94. 2.94. inherent_associated_types
    95. 2.95. inline_const
    96. 2.96. inline_const_pat
    97. 2.97. intra_doc_pointers
    98. 2.98. intrinsics
    99. 2.99. lang_items
    100. 2.100. large_assignments
    101. 2.101. let_chains
    102. 2.102. link_cfg
    103. 2.103. link_llvm_intrinsics
    104. 2.104. linkage
    105. 2.105. lint_reasons
    106. 2.106. macro_metavar_expr
    107. 2.107. marker_trait_attr
    108. 2.108. min_specialization
    109. 2.109. mips_target_feature
    110. 2.110. more_qualified_paths
    111. 2.111. multiple_supertrait_upcastable
    112. 2.112. must_not_suspend
    113. 2.113. naked_functions
    114. 2.114. native_link_modifiers_as_needed
    115. 2.115. needs_panic_runtime
    116. 2.116. negative_impls
    117. 2.117. never_type
    118. 2.118. never_type_fallback
    119. 2.119. no_core
    120. 2.120. no_coverage
    121. 2.121. no_sanitize
    122. 2.122. non_exhaustive_omitted_patterns_lint
    123. 2.123. non_lifetime_binders
    124. 2.124. object_safe_for_dispatch
    125. 2.125. omit_gdb_pretty_printer_section
    126. 2.126. optimize_attribute
    127. 2.127. packed_bundled_libs
    128. 2.128. panic_runtime
    129. 2.129. platform_intrinsics
    130. 2.130. plugin
    131. 2.131. powerpc_target_feature
    132. 2.132. precise_pointer_size_matching
    133. 2.133. prelude_import
    134. 2.134. proc_macro_hygiene
    135. 2.135. profiler_runtime
    136. 2.136. raw_dylib
    137. 2.137. raw_ref_op
    138. 2.138. register_tool
    139. 2.139. repr_simd
    140. 2.140. repr128
    141. 2.141. return_position_impl_trait_in_trait
    142. 2.142. riscv_target_feature
    143. 2.143. rtm_target_feature
    144. 2.144. rust_cold_cc
    145. 2.145. rustc_allow_const_fn_unstable
    146. 2.146. rustc_attrs
    147. 2.147. rustc_private
    148. 2.148. rustdoc_internals
    149. 2.149. rustdoc_missing_doc_code_examples
    150. 2.150. simd_ffi
    151. 2.151. specialization
    152. 2.152. sse4a_target_feature
    153. 2.153. staged_api
    154. 2.154. start
    155. 2.155. stmt_expr_attributes
    156. 2.156. strict_provenance
    157. 2.157. string_deref_patterns
    158. 2.158. structural_match
    159. 2.159. target_feature_11
    160. 2.160. tbm_target_feature
    161. 2.161. test_2018_feature
    162. 2.162. test_unstable_lint
    163. 2.163. thread_local
    164. 2.164. trait_alias
    165. 2.165. trait_upcasting
    166. 2.166. transparent_unions
    167. 2.167. trivial_bounds
    168. 2.168. try_blocks
    169. 2.169. type_alias_impl_trait
    170. 2.170. type_ascription
    171. 2.171. type_changing_struct_update
    172. 2.172. unboxed_closures
    173. 2.173. unix_sigpipe
    174. 2.174. unsafe_pin_internals
    175. 2.175. unsized_fn_params
    176. 2.176. unsized_locals
    177. 2.177. unsized_tuple_coercion
    178. 2.178. used_with_arg
    179. 2.179. wasm_abi
    180. 2.180. wasm_target_feature
    181. 2.181. with_negative_coherence
    182. 2.182. yeet_expr
  4. 3. Library Features
    1. 3.1. absolute_path
    2. 3.2. addr_parse_ascii
    3. 3.3. alloc_error_hook
    4. 3.4. alloc_internals
    5. 3.5. alloc_layout_extra
    6. 3.6. allocator_api
    7. 3.7. arc_unwrap_or_clone
    8. 3.8. array_chunks
    9. 3.9. array_into_iter_constructors
    10. 3.10. array_methods
    11. 3.11. array_try_from_fn
    12. 3.12. array_try_map
    13. 3.13. array_windows
    14. 3.14. array_zip
    15. 3.15. as_array_of_cells
    16. 3.16. assert_matches
    17. 3.17. async_iter_from_iter
    18. 3.18. async_iterator
    19. 3.19. atomic_bool_fetch_not
    20. 3.20. atomic_from_mut
    21. 3.21. atomic_from_ptr
    22. 3.22. backtrace_frames
    23. 3.23. bigint_helper_methods
    24. 3.24. binary_heap_as_slice
    25. 3.25. binary_heap_drain_sorted
    26. 3.26. binary_heap_into_iter_sorted
    27. 3.27. binary_heap_retain
    28. 3.28. bound_as_ref
    29. 3.29. bound_map
    30. 3.30. box_into_boxed_slice
    31. 3.31. box_into_inner
    32. 3.32. btree_cursors
    33. 3.33. btree_drain_filter
    34. 3.34. btreemap_alloc
    35. 3.35. buf_read_has_data_left
    36. 3.36. build_hasher_simple_hash_one
    37. 3.37. byte_slice_trim_ascii
    38. 3.38. c_size_t
    39. 3.39. c_void_variant
    40. 3.40. can_vector
    41. 3.41. cell_leak
    42. 3.42. cell_update
    43. 3.43. cfg_accessible
    44. 3.44. cfg_eval
    45. 3.45. char_indices_offset
    46. 3.46. char_internals
    47. 3.47. coerce_unsized
    48. 3.48. concat_bytes
    49. 3.49. concat_idents
    50. 3.50. const_align_of_val
    51. 3.51. const_align_of_val_raw
    52. 3.52. const_align_offset
    53. 3.53. const_alloc_error
    54. 3.54. const_alloc_layout
    55. 3.55. const_arguments_as_str
    56. 3.56. const_array_from_ref
    57. 3.57. const_array_into_iter_constructors
    58. 3.58. const_assert_type2
    59. 3.59. const_assume
    60. 3.60. const_bigint_helper_methods
    61. 3.61. const_black_box
    62. 3.62. const_bool_to_option
    63. 3.63. const_borrow
    64. 3.64. const_box
    65. 3.65. const_btree_len
    66. 3.66. const_caller_location
    67. 3.67. const_cell_into_inner
    68. 3.68. const_char_from_u32_unchecked
    69. 3.69. const_clone
    70. 3.70. const_cmp
    71. 3.71. const_collections_with_hasher
    72. 3.72. const_convert
    73. 3.73. const_cow_is_borrowed
    74. 3.74. const_cstr_methods
    75. 3.75. const_default_impls
    76. 3.76. const_deref
    77. 3.77. const_discriminant
    78. 3.78. const_eval_select
    79. 3.79. const_exact_div
    80. 3.80. const_float_bits_conv
    81. 3.81. const_float_classify
    82. 3.82. const_fmt_arguments_new
    83. 3.83. const_fn_trait_ref_impls
    84. 3.84. const_format_args
    85. 3.85. const_hash
    86. 3.86. const_heap
    87. 3.87. const_index_range_slice_index
    88. 3.88. const_inherent_unchecked_arith
    89. 3.89. const_int_unchecked_arith
    90. 3.90. const_intoiterator_identity
    91. 3.91. const_intrinsic_forget
    92. 3.92. const_intrinsic_raw_eq
    93. 3.93. const_io_structs
    94. 3.94. const_ip
    95. 3.95. const_ipv4
    96. 3.96. const_ipv6
    97. 3.97. const_is_char_boundary
    98. 3.98. const_iter
    99. 3.99. const_likely
    100. 3.100. const_location_fields
    101. 3.101. const_maybe_uninit_array_assume_init
    102. 3.102. const_maybe_uninit_as_mut_ptr
    103. 3.103. const_maybe_uninit_assume_init
    104. 3.104. const_maybe_uninit_assume_init_read
    105. 3.105. const_maybe_uninit_uninit_array
    106. 3.106. const_maybe_uninit_write
    107. 3.107. const_maybe_uninit_zeroed
    108. 3.108. const_nonnull_new
    109. 3.109. const_num_from_num
    110. 3.110. const_ops
    111. 3.111. const_option
    112. 3.112. const_option_cloned
    113. 3.113. const_option_ext
    114. 3.114. const_pin
    115. 3.115. const_pointer_byte_offsets
    116. 3.116. const_pointer_is_aligned
    117. 3.117. const_pref_align_of
    118. 3.118. const_ptr_as_ref
    119. 3.119. const_ptr_is_null
    120. 3.120. const_ptr_read
    121. 3.121. const_ptr_sub_ptr
    122. 3.122. const_ptr_write
    123. 3.123. const_range_bounds
    124. 3.124. const_raw_ptr_comparison
    125. 3.125. const_replace
    126. 3.126. const_result
    127. 3.127. const_result_drop
    128. 3.128. const_reverse
    129. 3.129. const_size_of_val
    130. 3.130. const_size_of_val_raw
    131. 3.131. const_slice_first_last
    132. 3.132. const_slice_from_mut_ptr_range
    133. 3.133. const_slice_from_ptr_range
    134. 3.134. const_slice_from_raw_parts_mut
    135. 3.135. const_slice_from_ref
    136. 3.136. const_slice_index
    137. 3.137. const_slice_ptr_len
    138. 3.138. const_slice_split_at_mut
    139. 3.139. const_slice_split_at_not_mut
    140. 3.140. const_str_from_utf8
    141. 3.141. const_str_from_utf8_unchecked_mut
    142. 3.142. const_swap
    143. 3.143. const_transmute_copy
    144. 3.144. const_type_id
    145. 3.145. const_type_name
    146. 3.146. const_unicode_case_lookup
    147. 3.147. const_unsafecell_get_mut
    148. 3.148. const_waker
    149. 3.149. const_weak_new
    150. 3.150. container_error_extra
    151. 3.151. control_flow_enum
    152. 3.152. convert_float_to_int
    153. 3.153. core_intrinsics
    154. 3.154. core_panic
    155. 3.155. core_private_bignum
    156. 3.156. core_private_diy_float
    157. 3.157. cow_is_borrowed
    158. 3.158. cstr_is_empty
    159. 3.159. cursor_remaining
    160. 3.160. deadline_api
    161. 3.161. dec2flt
    162. 3.162. default_free_fn
    163. 3.163. derive_clone_copy
    164. 3.164. derive_const
    165. 3.165. derive_eq
    166. 3.166. dir_entry_ext2
    167. 3.167. discriminant_kind
    168. 3.168. dispatch_from_dyn
    169. 3.169. div_duration
    170. 3.170. downcast_unchecked
    171. 3.171. drain_filter
    172. 3.172. drain_keep_rest
    173. 3.173. duration_constants
    174. 3.174. duration_consts_float
    175. 3.175. edition_panic
    176. 3.176. entry_insert
    177. 3.177. error_generic_member_access
    178. 3.178. error_in_core
    179. 3.179. error_iter
    180. 3.180. error_reporter
    181. 3.181. error_type_id
    182. 3.182. exact_size_is_empty
    183. 3.183. exclusive_wrapper
    184. 3.184. exit_status_error
    185. 3.185. exitcode_exit_method
    186. 3.186. extend_one
    187. 3.187. fd
    188. 3.188. fd_read
    189. 3.189. file_create_new
    190. 3.190. file_set_times
    191. 3.191. float_minimum_maximum
    192. 3.192. float_next_up_down
    193. 3.193. flt2dec
    194. 3.194. fmt_helpers_for_derive
    195. 3.195. fmt_internals
    196. 3.196. fn_traits
    197. 3.197. forget_unsized
    198. 3.198. format_args_nl
    199. 3.199. fs_try_exists
    200. 3.200. future_join
    201. 3.201. gen_future
    202. 3.202. generator_trait
    203. 3.203. generic_assert_internals
    204. 3.204. get_many_mut
    205. 3.205. get_mut_unchecked
    206. 3.206. hash_drain_filter
    207. 3.207. hash_raw_entry
    208. 3.208. hash_set_entry
    209. 3.209. hasher_prefixfree_extras
    210. 3.210. hashmap_internals
    211. 3.211. hint_must_use
    212. 3.212. inplace_iteration
    213. 3.213. int_roundings
    214. 3.214. integer_atomics
    215. 3.215. internal_output_capture
    216. 3.216. io_error_downcast
    217. 3.217. io_error_more
    218. 3.218. io_error_other
    219. 3.219. io_error_uncategorized
    220. 3.220. io_slice_advance
    221. 3.221. ip
    222. 3.222. ip_in_core
    223. 3.223. is_ascii_octdigit
    224. 3.224. is_some_and
    225. 3.225. is_sorted
    226. 3.226. is_terminal
    227. 3.227. iter_advance_by
    228. 3.228. iter_array_chunks
    229. 3.229. iter_collect_into
    230. 3.230. iter_from_generator
    231. 3.231. iter_intersperse
    232. 3.232. iter_is_partitioned
    233. 3.233. iter_next_chunk
    234. 3.234. iter_order_by
    235. 3.235. iter_partition_in_place
    236. 3.236. iter_repeat_n
    237. 3.237. iterator_try_collect
    238. 3.238. iterator_try_reduce
    239. 3.239. layout_for_ptr
    240. 3.240. liballoc_internals
    241. 3.241. libstd_sys_internals
    242. 3.242. libstd_thread_internals
    243. 3.243. linked_list_cursors
    244. 3.244. linked_list_remove
    245. 3.245. linux_pidfd
    246. 3.246. local_key_cell_methods
    247. 3.247. log_syntax
    248. 3.248. map_entry_replace
    249. 3.249. map_many_mut
    250. 3.250. map_try_insert
    251. 3.251. maybe_uninit_array_assume_init
    252. 3.252. maybe_uninit_as_bytes
    253. 3.253. maybe_uninit_slice
    254. 3.254. maybe_uninit_uninit_array
    255. 3.255. maybe_uninit_uninit_array_transpose
    256. 3.256. maybe_uninit_write_slice
    257. 3.257. mem_copy_fn
    258. 3.258. mutex_unlock
    259. 3.259. mutex_unpoison
    260. 3.260. new_uninit
    261. 3.261. nonzero_negation_ops
    262. 3.262. nonzero_ops
    263. 3.263. numfmt
    264. 3.264. once_cell
    265. 3.265. one_sided_range
    266. 3.266. option_as_slice
    267. 3.267. option_get_or_insert_default
    268. 3.268. option_result_contains
    269. 3.269. option_zip
    270. 3.270. panic_abort
    271. 3.271. panic_always_abort
    272. 3.272. panic_backtrace_config
    273. 3.273. panic_can_unwind
    274. 3.274. panic_info_message
    275. 3.275. panic_internals
    276. 3.276. panic_unwind
    277. 3.277. panic_update_hook
    278. 3.278. path_file_prefix
    279. 3.279. pattern
    280. 3.280. peer_credentials_unix_socket
    281. 3.281. pin_deref_mut
    282. 3.282. pointer_byte_offsets
    283. 3.283. pointer_is_aligned
    284. 3.284. pointer_like_trait
    285. 3.285. poll_ready
    286. 3.286. portable_simd
    287. 3.287. prelude_2024
    288. 3.288. print_internals
    289. 3.289. proc_macro_def_site
    290. 3.290. proc_macro_diagnostic
    291. 3.291. proc_macro_expand
    292. 3.292. proc_macro_internals
    293. 3.293. proc_macro_quote
    294. 3.294. proc_macro_span
    295. 3.295. proc_macro_span_shrink
    296. 3.296. proc_macro_tracked_env
    297. 3.297. process_exitcode_internals
    298. 3.298. process_internals
    299. 3.299. profiler_runtime_lib
    300. 3.300. provide_any
    301. 3.301. ptr_alignment_type
    302. 3.302. ptr_as_uninit
    303. 3.303. ptr_from_ref
    304. 3.304. ptr_internals
    305. 3.305. ptr_mask
    306. 3.306. ptr_metadata
    307. 3.307. ptr_sub_ptr
    308. 3.308. ptr_to_from_bits
    309. 3.309. pub_crate_should_not_need_unstable_attr
    310. 3.310. raw_os_error_ty
    311. 3.311. raw_os_nonzero
    312. 3.312. raw_slice_split
    313. 3.313. raw_vec_internals
    314. 3.314. read_buf
    315. 3.315. ready_into_inner
    316. 3.316. receiver_trait
    317. 3.317. restricted_std
    318. 3.318. result_contains_err
    319. 3.319. result_flattening
    320. 3.320. result_option_inspect
    321. 3.321. round_char_boundary
    322. 3.322. round_ties_even
    323. 3.323. rt
    324. 3.324. saturating_int_assign_impl
    325. 3.325. saturating_int_impl
    326. 3.326. sealed
    327. 3.327. seek_stream_len
    328. 3.328. set_ptr_value
    329. 3.329. setgroups
    330. 3.330. sgx_platform
    331. 3.331. sized_type_properties
    332. 3.332. slice_as_chunks
    333. 3.333. slice_concat_ext
    334. 3.334. slice_concat_trait
    335. 3.335. slice_flatten
    336. 3.336. slice_from_ptr_range
    337. 3.337. slice_group_by
    338. 3.338. slice_index_methods
    339. 3.339. slice_internals
    340. 3.340. slice_iter_mut_as_mut_slice
    341. 3.341. slice_partition_dedup
    342. 3.342. slice_pattern
    343. 3.343. slice_ptr_get
    344. 3.344. slice_ptr_len
    345. 3.345. slice_range
    346. 3.346. slice_split_at_unchecked
    347. 3.347. slice_swap_unchecked
    348. 3.348. slice_take
    349. 3.349. solid_ext
    350. 3.350. sort_floats
    351. 3.351. sort_internals
    352. 3.352. spec_option_partial_eq
    353. 3.353. split_array
    354. 3.354. split_as_slice
    355. 3.355. std_internals
    356. 3.356. stdio_makes_pipe
    357. 3.357. stdsimd
    358. 3.358. step_trait
    359. 3.359. str_internals
    360. 3.360. str_split_inclusive_remainder
    361. 3.361. str_split_remainder
    362. 3.362. str_split_whitespace_remainder
    363. 3.363. strict_provenance_atomic_ptr
    364. 3.364. string_extend_from_within
    365. 3.365. string_leak
    366. 3.366. string_remove_matches
    367. 3.367. sync_unsafe_cell
    368. 3.368. tcp_linger
    369. 3.369. tcp_quickack
    370. 3.370. tcplistener_into_incoming
    371. 3.371. test
    372. 3.372. thin_box
    373. 3.373. thread_id_value
    374. 3.374. thread_local_internals
    375. 3.375. thread_spawn_unchecked
    376. 3.376. trace_macros
    377. 3.377. track_path
    378. 3.378. transmutability
    379. 3.379. trusted_len
    380. 3.380. trusted_len_next_unchecked
    381. 3.381. trusted_random_access
    382. 3.382. trusted_step
    383. 3.383. try_find
    384. 3.384. try_reserve_kind
    385. 3.385. try_trait_v2
    386. 3.386. try_trait_v2_residual
    387. 3.387. try_trait_v2_yeet
    388. 3.388. tuple_trait
    389. 3.389. type_name_of_val
    390. 3.390. unchecked_math
    391. 3.391. unicode_internals
    392. 3.392. unix_chown
    393. 3.393. unix_file_vectored_at
    394. 3.394. unix_set_mark
    395. 3.395. unix_socket_ancillary_data
    396. 3.396. unix_socket_peek
    397. 3.397. unsize
    398. 3.398. unwrap_infallible
    399. 3.399. update_panic_count
    400. 3.400. utf16_extra
    401. 3.401. utf16_extra_const
    402. 3.402. utf8_chunks
    403. 3.403. variant_count
    404. 3.404. vec_into_raw_parts
    405. 3.405. vec_push_within_capacity
    406. 3.406. vec_split_at_spare
    407. 3.407. waker_getters
    408. 3.408. wasi_ext
    409. 3.409. windows_by_handle
    410. 3.410. windows_c
    411. 3.411. windows_handle
    412. 3.412. windows_net
    413. 3.413. windows_process_exit_code_from
    414. 3.414. windows_process_extensions_async_pipes
    415. 3.415. windows_process_extensions_force_quotes
    416. 3.416. windows_process_extensions_main_thread_handle
    417. 3.417. windows_stdio
    418. 3.418. wrapping_int_impl
    419. 3.419. wrapping_next_power_of_two
    420. 3.420. write_all_vectored
    421. 3.421. yeet_desugar_details

The Rust Unstable Book

Language features