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. codegen_options
    6. 1.6. control_flow_guard
    7. 1.7. coverage_options
    8. 1.8. debug_info_for_profiling
    9. 1.9. default_hidden_visibility
    10. 1.10. direct_access_external_data
    11. 1.11. dump_mono_stats
    12. 1.12. dump_mono_stats_format
    13. 1.13. dwarf_version
    14. 1.14. dylib_lto
    15. 1.15. emit_stack_sizes
    16. 1.16. env_set
    17. 1.17. export_executable_symbols
    18. 1.18. extern_options
    19. 1.19. function_return
    20. 1.20. instrument_xray
    21. 1.21. link_native_libraries
    22. 1.22. llvm_module_flag
    23. 1.23. location_detail
    24. 1.24. move_size_limit
    25. 1.25. no_jump_tables
    26. 1.26. no_parallel_llvm
    27. 1.27. no_unique_section_names
    28. 1.28. profile
    29. 1.29. profile_sample_use
    30. 1.30. remap_cwd_prefix
    31. 1.31. remap_path_scope
    32. 1.32. report_time
    33. 1.33. sanitizer
    34. 1.34. self_profile
    35. 1.35. self_profile_events
    36. 1.36. shell_argfiles
    37. 1.37. src_hash_algorithm
    38. 1.38. temps_dir
    39. 1.39. tiny_const_eval_limit
    40. 1.40. tls_model
    41. 1.41. unsound_mir_opts
    42. 1.42. virtual_function_elimination
  3. 2. Language features
    1. 2.1. aarch64_ver_target_feature
    2. 2.2. abi_avr_interrupt
    3. 2.3. abi_c_cmse_nonsecure_call
    4. 2.4. abi_msp430_interrupt
    5. 2.5. abi_ptx
    6. 2.6. abi_riscv_interrupt
    7. 2.7. abi_unadjusted
    8. 2.8. abi_vectorcall
    9. 2.9. abi_x86_interrupt
    10. 2.10. adt_const_params
    11. 2.11. alloc_error_handler
    12. 2.12. allocator_internals
    13. 2.13. allow_internal_unsafe
    14. 2.14. allow_internal_unstable
    15. 2.15. anonymous_lifetime_in_impl_trait
    16. 2.16. arbitrary_self_types
    17. 2.17. arm_target_feature
    18. 2.18. asm_const
    19. 2.19. asm_experimental_arch
    20. 2.20. asm_goto
    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_track_caller
    27. 2.27. async_for_loop
    28. 2.28. auto_traits
    29. 2.29. avx512_target_feature
    30. 2.30. box_patterns
    31. 2.31. bpf_target_feature
    32. 2.32. builtin_syntax
    33. 2.33. c_unwind
    34. 2.34. c_variadic
    35. 2.35. cfg_overflow_checks
    36. 2.36. cfg_relocation_model
    37. 2.37. cfg_sanitize
    38. 2.38. cfg_sanitizer_cfi
    39. 2.39. cfg_target_compact
    40. 2.40. cfg_target_has_atomic
    41. 2.41. cfg_target_has_atomic_equal_alignment
    42. 2.42. cfg_target_thread_local
    43. 2.43. cfg_version
    44. 2.44. cfi_encoding
    45. 2.45. closure_lifetime_binder
    46. 2.46. closure_track_caller
    47. 2.47. cmse_nonsecure_entry
    48. 2.48. collapse_debuginfo
    49. 2.49. compiler_builtins
    50. 2.50. const_async_blocks
    51. 2.51. const_closures
    52. 2.52. const_extern_fn
    53. 2.53. const_fn_floating_point_arithmetic
    54. 2.54. const_for
    55. 2.55. const_mut_refs
    56. 2.56. const_precise_live_drops
    57. 2.57. const_refs_to_cell
    58. 2.58. const_refs_to_static
    59. 2.59. const_trait_impl
    60. 2.60. const_try
    61. 2.61. coroutine_clone
    62. 2.62. coroutines
    63. 2.63. coverage_attribute
    64. 2.64. csky_target_feature
    65. 2.65. custom_code_classes_in_docs
    66. 2.66. custom_inner_attributes
    67. 2.67. custom_mir
    68. 2.68. custom_test_frameworks
    69. 2.69. decl_macro
    70. 2.70. default_type_parameter_fallback
    71. 2.71. deprecated_safe
    72. 2.72. deprecated_suggestion
    73. 2.73. do_not_recommend
    74. 2.74. doc_auto_cfg
    75. 2.75. doc_cfg
    76. 2.76. doc_cfg_hide
    77. 2.77. doc_masked
    78. 2.78. doc_notable_trait
    79. 2.79. dropck_eyepatch
    80. 2.80. dyn_star
    81. 2.81. effects
    82. 2.82. ermsb_target_feature
    83. 2.83. exclusive_range_pattern
    84. 2.84. exhaustive_patterns
    85. 2.85. explicit_tail_calls
    86. 2.86. extended_varargs_abi_support
    87. 2.87. extern_types
    88. 2.88. f128
    89. 2.89. f16
    90. 2.90. ffi_const
    91. 2.91. ffi_pure
    92. 2.92. fn_align
    93. 2.93. fn_delegation
    94. 2.94. freeze_impls
    95. 2.95. fundamental
    96. 2.96. gen_blocks
    97. 2.97. generic_arg_infer
    98. 2.98. generic_assert
    99. 2.99. generic_associated_types_extended
    100. 2.100. generic_const_exprs
    101. 2.101. generic_const_items
    102. 2.102. half_open_range_patterns_in_slices
    103. 2.103. hexagon_target_feature
    104. 2.104. if_let_guard
    105. 2.105. impl_trait_in_assoc_type
    106. 2.106. impl_trait_in_fn_trait_return
    107. 2.107. imported_main
    108. 2.108. inherent_associated_types
    109. 2.109. inline_const
    110. 2.110. inline_const_pat
    111. 2.111. intra_doc_pointers
    112. 2.112. intrinsics
    113. 2.113. lahfsahf_target_feature
    114. 2.114. lang_items
    115. 2.115. large_assignments
    116. 2.116. lazy_type_alias
    117. 2.117. let_chains
    118. 2.118. lifetime_capture_rules_2024
    119. 2.119. link_arg_attribute
    120. 2.120. link_cfg
    121. 2.121. link_llvm_intrinsics
    122. 2.122. linkage
    123. 2.123. lint_reasons
    124. 2.124. loongarch_target_feature
    125. 2.125. macro_metavar_expr
    126. 2.126. marker_trait_attr
    127. 2.127. min_exhaustive_patterns
    128. 2.128. min_specialization
    129. 2.129. mips_target_feature
    130. 2.130. more_qualified_paths
    131. 2.131. multiple_supertrait_upcastable
    132. 2.132. must_not_suspend
    133. 2.133. naked_functions
    134. 2.134. native_link_modifiers_as_needed
    135. 2.135. needs_panic_runtime
    136. 2.136. negative_bounds
    137. 2.137. negative_impls
    138. 2.138. never_patterns
    139. 2.139. never_type
    140. 2.140. never_type_fallback
    141. 2.141. no_core
    142. 2.142. no_sanitize
    143. 2.143. non_exhaustive_omitted_patterns_lint
    144. 2.144. non_lifetime_binders
    145. 2.145. object_safe_for_dispatch
    146. 2.146. offset_of_enum
    147. 2.147. offset_of_nested
    148. 2.148. omit_gdb_pretty_printer_section
    149. 2.149. optimize_attribute
    150. 2.150. panic_runtime
    151. 2.151. pattern_complexity
    152. 2.152. powerpc_target_feature
    153. 2.153. prelude_import
    154. 2.154. prfchw_target_feature
    155. 2.155. proc_macro_hygiene
    156. 2.156. profiler_runtime
    157. 2.157. raw_ref_op
    158. 2.158. register_tool
    159. 2.159. repr_simd
    160. 2.160. repr128
    161. 2.161. return_type_notation
    162. 2.162. riscv_target_feature
    163. 2.163. rtm_target_feature
    164. 2.164. rust_cold_cc
    165. 2.165. rustc_allow_const_fn_unstable
    166. 2.166. rustc_attrs
    167. 2.167. rustc_private
    168. 2.168. rustdoc_internals
    169. 2.169. rustdoc_missing_doc_code_examples
    170. 2.170. simd_ffi
    171. 2.171. specialization
    172. 2.172. sse4a_target_feature
    173. 2.173. staged_api
    174. 2.174. start
    175. 2.175. stmt_expr_attributes
    176. 2.176. strict_provenance
    177. 2.177. string_deref_patterns
    178. 2.178. structural_match
    179. 2.179. target_feature_11
    180. 2.180. tbm_target_feature
    181. 2.181. test_unstable_lint
    182. 2.182. thread_local
    183. 2.183. trait_alias
    184. 2.184. trait_upcasting
    185. 2.185. transmute_generic_consts
    186. 2.186. transparent_unions
    187. 2.187. trivial_bounds
    188. 2.188. try_blocks
    189. 2.189. type_alias_impl_trait
    190. 2.190. type_ascription
    191. 2.191. type_changing_struct_update
    192. 2.192. type_privacy_lints
    193. 2.193. unboxed_closures
    194. 2.194. unix_sigpipe
    195. 2.195. unnamed_fields
    196. 2.196. unsized_fn_params
    197. 2.197. unsized_locals
    198. 2.198. unsized_tuple_coercion
    199. 2.199. used_with_arg
    200. 2.200. wasm_abi
    201. 2.201. wasm_target_feature
    202. 2.202. with_negative_coherence
    203. 2.203. 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. array_chunks
    8. 3.8. array_into_iter_constructors
    9. 3.9. array_try_from_fn
    10. 3.10. array_try_map
    11. 3.11. array_windows
    12. 3.12. as_array_of_cells
    13. 3.13. ascii_char
    14. 3.14. ascii_char_variants
    15. 3.15. assert_matches
    16. 3.16. async_fn_traits
    17. 3.17. async_gen_internals
    18. 3.18. async_iter_from_iter
    19. 3.19. async_iterator
    20. 3.20. atomic_bool_fetch_not
    21. 3.21. atomic_from_mut
    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. bound_as_ref
    28. 3.28. box_into_boxed_slice
    29. 3.29. box_into_inner
    30. 3.30. btree_cursors
    31. 3.31. btree_extract_if
    32. 3.32. btreemap_alloc
    33. 3.33. buf_read_has_data_left
    34. 3.34. bufread_skip_until
    35. 3.35. byte_slice_trim_ascii
    36. 3.36. c_size_t
    37. 3.37. c_str_module
    38. 3.38. c_void_variant
    39. 3.39. can_vector
    40. 3.40. cell_leak
    41. 3.41. cell_update
    42. 3.42. cfg_accessible
    43. 3.43. cfg_eval
    44. 3.44. cfg_match
    45. 3.45. char_indices_offset
    46. 3.46. char_internals
    47. 3.47. char_min
    48. 3.48. cmp_minmax
    49. 3.49. coerce_unsized
    50. 3.50. concat_bytes
    51. 3.51. concat_idents
    52. 3.52. const_align_of_val
    53. 3.53. const_align_of_val_raw
    54. 3.54. const_align_offset
    55. 3.55. const_alloc_error
    56. 3.56. const_alloc_layout
    57. 3.57. const_arguments_as_str
    58. 3.58. const_array_from_ref
    59. 3.59. const_array_into_iter_constructors
    60. 3.60. const_atomic_from_ptr
    61. 3.61. const_bigint_helper_methods
    62. 3.62. const_binary_heap_constructor
    63. 3.63. const_black_box
    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_cmp
    70. 3.70. const_collections_with_hasher
    71. 3.71. const_cow_is_borrowed
    72. 3.72. const_cstr_from_ptr
    73. 3.73. const_eval_select
    74. 3.74. const_exact_div
    75. 3.75. const_float_bits_conv
    76. 3.76. const_float_classify
    77. 3.77. const_fmt_arguments_new
    78. 3.78. const_format_args
    79. 3.79. const_hash
    80. 3.80. const_heap
    81. 3.81. const_hint_assert_unchecked
    82. 3.82. const_index_range_slice_index
    83. 3.83. const_int_unchecked_arith
    84. 3.84. const_intoiterator_identity
    85. 3.85. const_intrinsic_compare_bytes
    86. 3.86. const_intrinsic_copy
    87. 3.87. const_intrinsic_forget
    88. 3.88. const_intrinsic_raw_eq
    89. 3.89. const_io_structs
    90. 3.90. const_ip
    91. 3.91. const_ipv4
    92. 3.92. const_ipv6
    93. 3.93. const_likely
    94. 3.94. const_location_fields
    95. 3.95. const_maybe_uninit_array_assume_init
    96. 3.96. const_maybe_uninit_as_mut_ptr
    97. 3.97. const_maybe_uninit_assume_init
    98. 3.98. const_maybe_uninit_uninit_array
    99. 3.99. const_maybe_uninit_write
    100. 3.100. const_nonnull_new
    101. 3.101. const_num_midpoint
    102. 3.102. const_ops
    103. 3.103. const_option
    104. 3.104. const_option_ext
    105. 3.105. const_pin
    106. 3.106. const_pointer_is_aligned
    107. 3.107. const_pref_align_of
    108. 3.108. const_ptr_as_ref
    109. 3.109. const_ptr_is_null
    110. 3.110. const_ptr_sub_ptr
    111. 3.111. const_ptr_write
    112. 3.112. const_range_bounds
    113. 3.113. const_raw_ptr_comparison
    114. 3.114. const_replace
    115. 3.115. const_result
    116. 3.116. const_size_of_val
    117. 3.117. const_size_of_val_raw
    118. 3.118. const_slice_first_last
    119. 3.119. const_slice_first_last_chunk
    120. 3.120. const_slice_from_mut_ptr_range
    121. 3.121. const_slice_from_ptr_range
    122. 3.122. const_slice_from_raw_parts_mut
    123. 3.123. const_slice_from_ref
    124. 3.124. const_slice_index
    125. 3.125. const_slice_ptr_len
    126. 3.126. const_slice_split_at_mut
    127. 3.127. const_str_from_raw_parts_mut
    128. 3.128. const_str_from_utf8
    129. 3.129. const_str_from_utf8_unchecked_mut
    130. 3.130. const_strict_overflow_ops
    131. 3.131. const_swap
    132. 3.132. const_type_id
    133. 3.133. const_type_name
    134. 3.134. const_unicode_case_lookup
    135. 3.135. const_unsafecell_get_mut
    136. 3.136. const_waker
    137. 3.137. container_error_extra
    138. 3.138. control_flow_enum
    139. 3.139. convert_float_to_int
    140. 3.140. core_intrinsics
    141. 3.141. core_io_borrowed_buf
    142. 3.142. core_private_bignum
    143. 3.143. core_private_diy_float
    144. 3.144. coroutine_trait
    145. 3.145. cow_is_borrowed
    146. 3.146. cstr_bytes
    147. 3.147. cstr_count_bytes
    148. 3.148. cursor_remaining
    149. 3.149. deadline_api
    150. 3.150. debug_closure_helpers
    151. 3.151. dec2flt
    152. 3.152. derive_clone_copy
    153. 3.153. derive_const
    154. 3.154. derive_eq
    155. 3.155. dir_entry_ext2
    156. 3.156. discriminant_kind
    157. 3.157. dispatch_from_dyn
    158. 3.158. div_duration
    159. 3.159. downcast_unchecked
    160. 3.160. drain_keep_rest
    161. 3.161. duration_abs_diff
    162. 3.162. duration_constants
    163. 3.163. duration_constructors
    164. 3.164. duration_consts_float
    165. 3.165. duration_millis_float
    166. 3.166. duration_units
    167. 3.167. edition_panic
    168. 3.168. entry_insert
    169. 3.169. error_generic_member_access
    170. 3.170. error_in_core
    171. 3.171. error_iter
    172. 3.172. error_reporter
    173. 3.173. error_type_id
    174. 3.174. exact_size_is_empty
    175. 3.175. exclusive_wrapper
    176. 3.176. exit_status_error
    177. 3.177. exitcode_exit_method
    178. 3.178. exposed_provenance
    179. 3.179. extend_one
    180. 3.180. extract_if
    181. 3.181. fd
    182. 3.182. fd_read
    183. 3.183. float_gamma
    184. 3.184. float_minimum_maximum
    185. 3.185. float_next_up_down
    186. 3.186. flt2dec
    187. 3.187. fmt_helpers_for_derive
    188. 3.188. fmt_internals
    189. 3.189. fn_ptr_trait
    190. 3.190. fn_traits
    191. 3.191. forget_unsized
    192. 3.192. format_args_nl
    193. 3.193. freeze
    194. 3.194. fs_try_exists
    195. 3.195. future_join
    196. 3.196. gen_future
    197. 3.197. generic_assert_internals
    198. 3.198. generic_nonzero
    199. 3.199. get_many_mut
    200. 3.200. get_mut_unchecked
    201. 3.201. hash_extract_if
    202. 3.202. hash_raw_entry
    203. 3.203. hash_set_entry
    204. 3.204. hasher_prefixfree_extras
    205. 3.205. hashmap_internals
    206. 3.206. hint_assert_unchecked
    207. 3.207. hint_must_use
    208. 3.208. inplace_iteration
    209. 3.209. int_roundings
    210. 3.210. integer_atomics
    211. 3.211. internal_impls_macro
    212. 3.212. internal_output_capture
    213. 3.213. io_error_downcast
    214. 3.214. io_error_more
    215. 3.215. io_error_uncategorized
    216. 3.216. io_slice_advance
    217. 3.217. ip
    218. 3.218. ip_bits
    219. 3.219. is_ascii_octdigit
    220. 3.220. is_riscv_feature_detected
    221. 3.221. is_sorted
    222. 3.222. is_val_statically_known
    223. 3.223. isqrt
    224. 3.224. iter_advance_by
    225. 3.225. iter_array_chunks
    226. 3.226. iter_collect_into
    227. 3.227. iter_from_coroutine
    228. 3.228. iter_intersperse
    229. 3.229. iter_is_partitioned
    230. 3.230. iter_map_windows
    231. 3.231. iter_next_chunk
    232. 3.232. iter_order_by
    233. 3.233. iter_partition_in_place
    234. 3.234. iter_repeat_n
    235. 3.235. iterator_try_collect
    236. 3.236. iterator_try_reduce
    237. 3.237. junction_point
    238. 3.238. layout_for_ptr
    239. 3.239. lazy_cell
    240. 3.240. lazy_cell_consume
    241. 3.241. liballoc_internals
    242. 3.242. libstd_sys_internals
    243. 3.243. linked_list_cursors
    244. 3.244. linked_list_remove
    245. 3.245. linked_list_retain
    246. 3.246. linux_pidfd
    247. 3.247. local_waker
    248. 3.248. log_syntax
    249. 3.249. map_entry_replace
    250. 3.250. map_many_mut
    251. 3.251. map_try_insert
    252. 3.252. mapped_lock_guards
    253. 3.253. maybe_uninit_array_assume_init
    254. 3.254. maybe_uninit_as_bytes
    255. 3.255. maybe_uninit_fill
    256. 3.256. maybe_uninit_slice
    257. 3.257. maybe_uninit_uninit_array
    258. 3.258. maybe_uninit_uninit_array_transpose
    259. 3.259. maybe_uninit_write_slice
    260. 3.260. mem_copy_fn
    261. 3.261. more_float_constants
    262. 3.262. new_uninit
    263. 3.263. non_null_convenience
    264. 3.264. non_zero_count_ones
    265. 3.265. nonzero_from_mut
    266. 3.266. nonzero_internals
    267. 3.267. nonzero_ops
    268. 3.268. noop_waker
    269. 3.269. num_midpoint
    270. 3.270. numfmt
    271. 3.271. once_cell_try
    272. 3.272. once_cell_try_insert
    273. 3.273. one_sided_range
    274. 3.274. option_get_or_insert_default
    275. 3.275. option_take_if
    276. 3.276. option_zip
    277. 3.277. os_str_display
    278. 3.278. os_str_slice
    279. 3.279. panic_abort
    280. 3.280. panic_always_abort
    281. 3.281. panic_backtrace_config
    282. 3.282. panic_can_unwind
    283. 3.283. panic_info_message
    284. 3.284. panic_internals
    285. 3.285. panic_unwind
    286. 3.286. panic_update_hook
    287. 3.287. path_file_prefix
    288. 3.288. pattern
    289. 3.289. peer_credentials_unix_socket
    290. 3.290. pin_deref_mut
    291. 3.291. pointer_is_aligned
    292. 3.292. pointer_like_trait
    293. 3.293. portable_simd
    294. 3.294. prelude_2024
    295. 3.295. print_internals
    296. 3.296. proc_macro_byte_character
    297. 3.297. proc_macro_c_str_literals
    298. 3.298. proc_macro_def_site
    299. 3.299. proc_macro_diagnostic
    300. 3.300. proc_macro_expand
    301. 3.301. proc_macro_internals
    302. 3.302. proc_macro_quote
    303. 3.303. proc_macro_span
    304. 3.304. proc_macro_tracked_env
    305. 3.305. process_exitcode_internals
    306. 3.306. process_internals
    307. 3.307. profiler_runtime_lib
    308. 3.308. ptr_alignment_type
    309. 3.309. ptr_as_uninit
    310. 3.310. ptr_internals
    311. 3.311. ptr_mask
    312. 3.312. ptr_metadata
    313. 3.313. ptr_sub_ptr
    314. 3.314. ptr_to_from_bits
    315. 3.315. pub_crate_should_not_need_unstable_attr
    316. 3.316. raw_os_error_ty
    317. 3.317. raw_slice_split
    318. 3.318. raw_vec_internals
    319. 3.319. read_buf
    320. 3.320. ready_into_inner
    321. 3.321. receiver_trait
    322. 3.322. reentrant_lock
    323. 3.323. restricted_std
    324. 3.324. result_flattening
    325. 3.325. round_char_boundary
    326. 3.326. rt
    327. 3.327. sealed
    328. 3.328. seek_seek_relative
    329. 3.329. seek_stream_len
    330. 3.330. set_ptr_value
    331. 3.331. setgroups
    332. 3.332. sgx_platform
    333. 3.333. sized_type_properties
    334. 3.334. slice_as_chunks
    335. 3.335. slice_concat_ext
    336. 3.336. slice_concat_trait
    337. 3.337. slice_flatten
    338. 3.338. slice_from_ptr_range
    339. 3.339. slice_index_methods
    340. 3.340. slice_internals
    341. 3.341. slice_iter_mut_as_mut_slice
    342. 3.342. slice_partition_dedup
    343. 3.343. slice_pattern
    344. 3.344. slice_ptr_get
    345. 3.345. slice_ptr_len
    346. 3.346. slice_range
    347. 3.347. slice_split_at_unchecked
    348. 3.348. slice_split_once
    349. 3.349. slice_swap_unchecked
    350. 3.350. slice_take
    351. 3.351. solid_ext
    352. 3.352. sort_floats
    353. 3.353. sort_internals
    354. 3.354. spec_option_partial_eq
    355. 3.355. split_array
    356. 3.356. split_as_slice
    357. 3.357. split_at_checked
    358. 3.358. std_internals
    359. 3.359. stdarch_arm_feature_detection
    360. 3.360. stdarch_mips_feature_detection
    361. 3.361. stdarch_powerpc_feature_detection
    362. 3.362. stdio_makes_pipe
    363. 3.363. step_trait
    364. 3.364. str_from_raw_parts
    365. 3.365. str_from_utf16_endian
    366. 3.366. str_internals
    367. 3.367. str_lines_remainder
    368. 3.368. str_split_inclusive_remainder
    369. 3.369. str_split_remainder
    370. 3.370. str_split_whitespace_remainder
    371. 3.371. strict_overflow_ops
    372. 3.372. strict_provenance_atomic_ptr
    373. 3.373. string_extend_from_within
    374. 3.374. string_remove_matches
    375. 3.375. sync_unsafe_cell
    376. 3.376. tcp_deferaccept
    377. 3.377. tcp_linger
    378. 3.378. tcp_quickack
    379. 3.379. tcplistener_into_incoming
    380. 3.380. test
    381. 3.381. thin_box
    382. 3.382. thread_id_value
    383. 3.383. thread_local_internals
    384. 3.384. thread_sleep_until
    385. 3.385. thread_spawn_unchecked
    386. 3.386. trace_macros
    387. 3.387. track_path
    388. 3.388. transmutability
    389. 3.389. trusted_fused
    390. 3.390. trusted_len
    391. 3.391. trusted_len_next_unchecked
    392. 3.392. trusted_random_access
    393. 3.393. trusted_step
    394. 3.394. try_find
    395. 3.395. try_reserve_kind
    396. 3.396. try_trait_v2
    397. 3.397. try_trait_v2_residual
    398. 3.398. try_trait_v2_yeet
    399. 3.399. try_with_capacity
    400. 3.400. tuple_trait
    401. 3.401. ub_checks
    402. 3.402. uefi_std
    403. 3.403. unchecked_math
    404. 3.404. unchecked_neg
    405. 3.405. unchecked_shifts
    406. 3.406. unicode_internals
    407. 3.407. unique_rc_arc
    408. 3.408. unix_file_vectored_at
    409. 3.409. unix_set_mark
    410. 3.410. unix_socket_ancillary_data
    411. 3.411. unix_socket_peek
    412. 3.412. unsafe_cell_from_mut
    413. 3.413. unsafe_pin_internals
    414. 3.414. unsize
    415. 3.415. unwrap_infallible
    416. 3.416. update_panic_count
    417. 3.417. utf16_extra
    418. 3.418. utf16_extra_const
    419. 3.419. utf8_chunks
    420. 3.420. variant_count
    421. 3.421. vec_into_raw_parts
    422. 3.422. vec_push_within_capacity
    423. 3.423. vec_split_at_spare
    424. 3.424. waker_getters
    425. 3.425. wasi_ext
    426. 3.426. windows_by_handle
    427. 3.427. windows_c
    428. 3.428. windows_handle
    429. 3.429. windows_net
    430. 3.430. windows_process_exit_code_from
    431. 3.431. windows_process_extensions_async_pipes
    432. 3.432. windows_process_extensions_force_quotes
    433. 3.433. windows_process_extensions_main_thread_handle
    434. 3.434. windows_process_extensions_raw_attribute
    435. 3.435. windows_stdio
    436. 3.436. wrapping_int_impl
    437. 3.437. wrapping_next_power_of_two
    438. 3.438. write_all_vectored
    439. 3.439. yeet_desugar_details

The Rust Unstable Book

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