1. The Unstable Book
  2. 1. Compiler flags
    1. 1.1. branch_protection
    2. 1.2. cf_protection
    3. 1.3. codegen_backend
    4. 1.4. codegen_options
    5. 1.5. control_flow_guard
    6. 1.6. coverage_options
    7. 1.7. debug_info_for_profiling
    8. 1.8. default_visibility
    9. 1.9. direct_access_external_data
    10. 1.10. dump_mono_stats
    11. 1.11. dump_mono_stats_format
    12. 1.12. dwarf_version
    13. 1.13. dylib_lto
    14. 1.14. embed_source
    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. external_clangrt
    20. 1.20. fixed_x18
    21. 1.21. fmt_debug
    22. 1.22. function_return
    23. 1.23. instrument_xray
    24. 1.24. link_native_libraries
    25. 1.25. linker_features
    26. 1.26. lint_llvm_ir
    27. 1.27. llvm_module_flag
    28. 1.28. location_detail
    29. 1.29. move_size_limit
    30. 1.30. no_jump_tables
    31. 1.31. no_parallel_llvm
    32. 1.32. no_unique_section_names
    33. 1.33. on_broken_pipe
    34. 1.34. patchable_function_entry
    35. 1.35. print_check_cfg
    36. 1.36. profile
    37. 1.37. profile_sample_use
    38. 1.38. remap_cwd_prefix
    39. 1.39. remap_path_scope
    40. 1.40. report_time
    41. 1.41. sanitizer
    42. 1.42. self_profile
    43. 1.43. self_profile_events
    44. 1.44. shell_argfiles
    45. 1.45. small_data_threshold
    46. 1.46. src_hash_algorithm
    47. 1.47. temps_dir
    48. 1.48. tiny_const_eval_limit
    49. 1.49. tls_model
    50. 1.50. ub_checks
    51. 1.51. unsound_mir_opts
    52. 1.52. verbose_asm
    53. 1.53. virtual_function_elimination
    54. 1.54. wasm_c_abi
  3. 2. Language features
    1. 2.1. aarch64_unstable_target_feature
    2. 2.2. aarch64_ver_target_feature
    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_riscv_interrupt
    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. arbitrary_self_types_pointers
    19. 2.19. arm_target_feature
    20. 2.20. asm_experimental_arch
    21. 2.21. asm_goto
    22. 2.22. asm_unwind
    23. 2.23. associated_const_equality
    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_variadic
    34. 2.34. cfg_boolean_literals
    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_ub_checks
    44. 2.44. cfg_version
    45. 2.45. cfi_encoding
    46. 2.46. closure_lifetime_binder
    47. 2.47. closure_track_caller
    48. 2.48. cmse_nonsecure_entry
    49. 2.49. compiler_builtins
    50. 2.50. const_async_blocks
    51. 2.51. const_closures
    52. 2.52. const_for
    53. 2.53. const_precise_live_drops
    54. 2.54. const_trait_impl
    55. 2.55. const_try
    56. 2.56. coroutine_clone
    57. 2.57. coroutines
    58. 2.58. coverage_attribute
    59. 2.59. csky_target_feature
    60. 2.60. custom_inner_attributes
    61. 2.61. custom_mir
    62. 2.62. custom_test_frameworks
    63. 2.63. decl_macro
    64. 2.64. deprecated_safe
    65. 2.65. deprecated_suggestion
    66. 2.66. deref_patterns
    67. 2.67. derive_smart_pointer
    68. 2.68. do_not_recommend
    69. 2.69. doc_auto_cfg
    70. 2.70. doc_cfg
    71. 2.71. doc_cfg_hide
    72. 2.72. doc_masked
    73. 2.73. doc_notable_trait
    74. 2.74. dropck_eyepatch
    75. 2.75. dyn_compatible_for_dispatch
    76. 2.76. dyn_star
    77. 2.77. effects
    78. 2.78. ermsb_target_feature
    79. 2.79. exhaustive_patterns
    80. 2.80. explicit_tail_calls
    81. 2.81. extended_varargs_abi_support
    82. 2.82. extern_types
    83. 2.83. f128
    84. 2.84. f16
    85. 2.85. ffi_const
    86. 2.86. ffi_pure
    87. 2.87. fmt_debug
    88. 2.88. fn_align
    89. 2.89. fn_delegation
    90. 2.90. freeze_impls
    91. 2.91. fundamental
    92. 2.92. gen_blocks
    93. 2.93. generic_arg_infer
    94. 2.94. generic_assert
    95. 2.95. generic_associated_types_extended
    96. 2.96. generic_const_exprs
    97. 2.97. generic_const_items
    98. 2.98. global_registration
    99. 2.99. half_open_range_patterns_in_slices
    100. 2.100. hexagon_target_feature
    101. 2.101. if_let_guard
    102. 2.102. if_let_rescope
    103. 2.103. impl_trait_in_assoc_type
    104. 2.104. impl_trait_in_fn_trait_return
    105. 2.105. inherent_associated_types
    106. 2.106. inline_const_pat
    107. 2.107. intra_doc_pointers
    108. 2.108. intrinsics
    109. 2.109. lahfsahf_target_feature
    110. 2.110. lang_items
    111. 2.111. large_assignments
    112. 2.112. lazy_type_alias
    113. 2.113. let_chains
    114. 2.114. lifetime_capture_rules_2024
    115. 2.115. link_arg_attribute
    116. 2.116. link_cfg
    117. 2.117. link_llvm_intrinsics
    118. 2.118. linkage
    119. 2.119. loongarch_target_feature
    120. 2.120. macro_metavar_expr
    121. 2.121. macro_metavar_expr_concat
    122. 2.122. marker_trait_attr
    123. 2.123. min_specialization
    124. 2.124. mips_target_feature
    125. 2.125. more_maybe_bounds
    126. 2.126. more_qualified_paths
    127. 2.127. multiple_supertrait_upcastable
    128. 2.128. must_not_suspend
    129. 2.129. mut_ref
    130. 2.130. naked_functions
    131. 2.131. native_link_modifiers_as_needed
    132. 2.132. needs_panic_runtime
    133. 2.133. negative_bounds
    134. 2.134. negative_impls
    135. 2.135. never_patterns
    136. 2.136. never_type
    137. 2.137. never_type_fallback
    138. 2.138. no_core
    139. 2.139. no_sanitize
    140. 2.140. non_exhaustive_omitted_patterns_lint
    141. 2.141. non_lifetime_binders
    142. 2.142. offset_of_enum
    143. 2.143. offset_of_slice
    144. 2.144. omit_gdb_pretty_printer_section
    145. 2.145. optimize_attribute
    146. 2.146. panic_runtime
    147. 2.147. patchable_function_entry
    148. 2.148. pattern_complexity
    149. 2.149. pattern_types
    150. 2.150. pin_ergonomics
    151. 2.151. postfix_match
    152. 2.152. powerpc_target_feature
    153. 2.153. precise_capturing_in_traits
    154. 2.154. prelude_import
    155. 2.155. prfchw_target_feature
    156. 2.156. proc_macro_hygiene
    157. 2.157. profiler_runtime
    158. 2.158. ref_pat_eat_one_layer_2024
    159. 2.159. ref_pat_eat_one_layer_2024_structural
    160. 2.160. register_tool
    161. 2.161. repr_simd
    162. 2.162. repr128
    163. 2.163. result_ffi_guarantees
    164. 2.164. return_type_notation
    165. 2.165. riscv_target_feature
    166. 2.166. rtm_target_feature
    167. 2.167. rust_cold_cc
    168. 2.168. rustc_allow_const_fn_unstable
    169. 2.169. rustc_attrs
    170. 2.170. rustc_private
    171. 2.171. rustdoc_internals
    172. 2.172. rustdoc_missing_doc_code_examples
    173. 2.173. s390x_target_feature
    174. 2.174. sha512_sm_x86
    175. 2.175. shorter_tail_lifetimes
    176. 2.176. simd_ffi
    177. 2.177. specialization
    178. 2.178. sse4a_target_feature
    179. 2.179. staged_api
    180. 2.180. start
    181. 2.181. stmt_expr_attributes
    182. 2.182. strict_provenance
    183. 2.183. string_deref_patterns
    184. 2.184. structural_match
    185. 2.185. target_feature_11
    186. 2.186. tbm_target_feature
    187. 2.187. test_unstable_lint
    188. 2.188. thread_local
    189. 2.189. trait_alias
    190. 2.190. trait_upcasting
    191. 2.191. transmute_generic_consts
    192. 2.192. transparent_unions
    193. 2.193. trivial_bounds
    194. 2.194. try_blocks
    195. 2.195. type_alias_impl_trait
    196. 2.196. type_changing_struct_update
    197. 2.197. unboxed_closures
    198. 2.198. unqualified_local_imports
    199. 2.199. unsized_const_params
    200. 2.200. unsized_fn_params
    201. 2.201. unsized_locals
    202. 2.202. unsized_tuple_coercion
    203. 2.203. used_with_arg
    204. 2.204. wasm_target_feature
    205. 2.205. with_negative_coherence
    206. 2.206. x86_amx_intrinsics
    207. 2.207. xop_target_feature
    208. 2.208. yeet_expr
  4. 3. Library Features
    1. 3.1. abort_unwind
    2. 3.2. acceptfilter
    3. 3.3. addr_parse_ascii
    4. 3.4. alloc_error_hook
    5. 3.5. alloc_internals
    6. 3.6. alloc_layout_extra
    7. 3.7. allocator_api
    8. 3.8. anonymous_pipe
    9. 3.9. array_chunks
    10. 3.10. array_into_iter_constructors
    11. 3.11. array_ptr_get
    12. 3.12. array_repeat
    13. 3.13. array_try_from_fn
    14. 3.14. array_try_map
    15. 3.15. array_windows
    16. 3.16. as_array_of_cells
    17. 3.17. ascii_char
    18. 3.18. ascii_char_variants
    19. 3.19. assert_matches
    20. 3.20. async_drop
    21. 3.21. async_fn_traits
    22. 3.22. async_gen_internals
    23. 3.23. async_iter_from_iter
    24. 3.24. async_iterator
    25. 3.25. atomic_from_mut
    26. 3.26. backtrace_frames
    27. 3.27. bigint_helper_methods
    28. 3.28. binary_heap_drain_sorted
    29. 3.29. binary_heap_into_iter_sorted
    30. 3.30. bound_as_ref
    31. 3.31. box_as_ptr
    32. 3.32. box_into_boxed_slice
    33. 3.33. box_into_inner
    34. 3.34. box_uninit_write
    35. 3.35. box_vec_non_null
    36. 3.36. btree_cursors
    37. 3.37. btree_extract_if
    38. 3.38. btreemap_alloc
    39. 3.39. buf_read_has_data_left
    40. 3.40. bufreader_peek
    41. 3.41. build_hasher_default_const_new
    42. 3.42. c_size_t
    43. 3.43. c_str_module
    44. 3.44. c_void_variant
    45. 3.45. can_vector
    46. 3.46. cell_leak
    47. 3.47. cell_update
    48. 3.48. cfg_accessible
    49. 3.49. cfg_eval
    50. 3.50. cfg_match
    51. 3.51. char_internals
    52. 3.52. clone_to_uninit
    53. 3.53. cmp_minmax
    54. 3.54. coerce_unsized
    55. 3.55. concat_bytes
    56. 3.56. concat_idents
    57. 3.57. const_align_of_val
    58. 3.58. const_align_of_val_raw
    59. 3.59. const_align_offset
    60. 3.60. const_alloc_error
    61. 3.61. const_alloc_layout
    62. 3.62. const_arguments_as_str
    63. 3.63. const_array_into_iter_constructors
    64. 3.64. const_atomic_from_ptr
    65. 3.65. const_bigint_helper_methods
    66. 3.66. const_binary_heap_new_in
    67. 3.67. const_black_box
    68. 3.68. const_box
    69. 3.69. const_btree_len
    70. 3.70. const_cell
    71. 3.71. const_char_encode_utf16
    72. 3.72. const_collections_with_hasher
    73. 3.73. const_eval_select
    74. 3.74. const_exact_div
    75. 3.75. const_fmt_arguments_new
    76. 3.76. const_format_args
    77. 3.77. const_hash
    78. 3.78. const_heap
    79. 3.79. const_index_range_slice_index
    80. 3.80. const_intoiterator_identity
    81. 3.81. const_intrinsic_compare_bytes
    82. 3.82. const_intrinsic_raw_eq
    83. 3.83. const_ip
    84. 3.84. const_ipv4
    85. 3.85. const_ipv6
    86. 3.86. const_likely
    87. 3.87. const_make_ascii
    88. 3.88. const_maybe_uninit_array_assume_init
    89. 3.89. const_maybe_uninit_assume_init
    90. 3.90. const_maybe_uninit_uninit_array
    91. 3.91. const_maybe_uninit_write
    92. 3.92. const_nonnull_new
    93. 3.93. const_num_midpoint
    94. 3.94. const_option_ext
    95. 3.95. const_pin
    96. 3.96. const_pointer_is_aligned
    97. 3.97. const_pref_align_of
    98. 3.98. const_ptr_is_null
    99. 3.99. const_ptr_sub_ptr
    100. 3.100. const_range_bounds
    101. 3.101. const_raw_ptr_comparison
    102. 3.102. const_size_of_val
    103. 3.103. const_size_of_val_raw
    104. 3.104. const_slice_flatten
    105. 3.105. const_slice_from_mut_ptr_range
    106. 3.106. const_slice_from_ptr_range
    107. 3.107. const_str_from_raw_parts_mut
    108. 3.108. const_str_from_utf8
    109. 3.109. const_strict_overflow_ops
    110. 3.110. const_swap
    111. 3.111. const_three_way_compare
    112. 3.112. const_type_id
    113. 3.113. const_type_name
    114. 3.114. const_typed_swap
    115. 3.115. const_ub_checks
    116. 3.116. const_unbounded_shifts
    117. 3.117. const_unicode_case_lookup
    118. 3.118. const_vec_string_slice
    119. 3.119. container_error_extra
    120. 3.120. context_ext
    121. 3.121. convert_float_to_int
    122. 3.122. core_intrinsics
    123. 3.123. core_io_borrowed_buf
    124. 3.124. core_pattern_type
    125. 3.125. core_pattern_types
    126. 3.126. core_private_bignum
    127. 3.127. core_private_diy_float
    128. 3.128. coroutine_trait
    129. 3.129. cow_is_borrowed
    130. 3.130. cstr_bytes
    131. 3.131. cstr_internals
    132. 3.132. cursor_split
    133. 3.133. deadline_api
    134. 3.134. debug_closure_helpers
    135. 3.135. dec2flt
    136. 3.136. deref_pure_trait
    137. 3.137. derive_clone_copy
    138. 3.138. derive_const
    139. 3.139. derive_eq
    140. 3.140. dir_entry_ext2
    141. 3.141. discriminant_kind
    142. 3.142. dispatch_from_dyn
    143. 3.143. downcast_unchecked
    144. 3.144. drain_keep_rest
    145. 3.145. duration_constants
    146. 3.146. duration_constructors
    147. 3.147. duration_millis_float
    148. 3.148. duration_units
    149. 3.149. edition_panic
    150. 3.150. effect_types
    151. 3.151. error_generic_member_access
    152. 3.152. error_iter
    153. 3.153. error_reporter
    154. 3.154. error_type_id
    155. 3.155. exact_size_is_empty
    156. 3.156. exclusive_wrapper
    157. 3.157. exit_status_error
    158. 3.158. exitcode_exit_method
    159. 3.159. exposed_provenance
    160. 3.160. extend_one
    161. 3.161. extend_one_unchecked
    162. 3.162. extract_if
    163. 3.163. fd
    164. 3.164. fd_read
    165. 3.165. file_buffered
    166. 3.166. float_gamma
    167. 3.167. float_minimum_maximum
    168. 3.168. float_next_up_down
    169. 3.169. flt2dec
    170. 3.170. fmt_helpers_for_derive
    171. 3.171. fmt_internals
    172. 3.172. fn_ptr_trait
    173. 3.173. fn_traits
    174. 3.174. forget_unsized
    175. 3.175. format_args_nl
    176. 3.176. freeze
    177. 3.177. future_join
    178. 3.178. gen_future
    179. 3.179. generic_assert_internals
    180. 3.180. get_many_mut
    181. 3.181. get_mut_unchecked
    182. 3.182. hash_extract_if
    183. 3.183. hash_raw_entry
    184. 3.184. hash_set_entry
    185. 3.185. hasher_prefixfree_extras
    186. 3.186. hashmap_internals
    187. 3.187. hint_must_use
    188. 3.188. inplace_iteration
    189. 3.189. int_roundings
    190. 3.190. integer_atomics
    191. 3.191. integer_sign_cast
    192. 3.192. internal_impls_macro
    193. 3.193. internal_output_capture
    194. 3.194. io_error_inprogress
    195. 3.195. io_error_more
    196. 3.196. io_error_uncategorized
    197. 3.197. ip
    198. 3.198. is_ascii_octdigit
    199. 3.199. is_riscv_feature_detected
    200. 3.200. is_val_statically_known
    201. 3.201. isqrt
    202. 3.202. iter_advance_by
    203. 3.203. iter_array_chunks
    204. 3.204. iter_chain
    205. 3.205. iter_collect_into
    206. 3.206. iter_from_coroutine
    207. 3.207. iter_intersperse
    208. 3.208. iter_is_partitioned
    209. 3.209. iter_map_windows
    210. 3.210. iter_next_chunk
    211. 3.211. iter_order_by
    212. 3.212. iter_partition_in_place
    213. 3.213. iterator_try_collect
    214. 3.214. iterator_try_reduce
    215. 3.215. junction_point
    216. 3.216. layout_for_ptr
    217. 3.217. lazy_cell_into_inner
    218. 3.218. lazy_get
    219. 3.219. liballoc_internals
    220. 3.220. libstd_sys_internals
    221. 3.221. linked_list_cursors
    222. 3.222. linked_list_remove
    223. 3.223. linked_list_retain
    224. 3.224. linux_pidfd
    225. 3.225. local_waker
    226. 3.226. log_syntax
    227. 3.227. map_many_mut
    228. 3.228. map_try_insert
    229. 3.229. mapped_lock_guards
    230. 3.230. maybe_uninit_array_assume_init
    231. 3.231. maybe_uninit_as_bytes
    232. 3.232. maybe_uninit_fill
    233. 3.233. maybe_uninit_slice
    234. 3.234. maybe_uninit_uninit_array
    235. 3.235. maybe_uninit_uninit_array_transpose
    236. 3.236. maybe_uninit_write_slice
    237. 3.237. mem_copy_fn
    238. 3.238. more_float_constants
    239. 3.239. mpmc_channel
    240. 3.240. new_range_api
    241. 3.241. new_zeroed_alloc
    242. 3.242. non_zero_count_ones
    243. 3.243. nonzero_bitwise
    244. 3.244. nonzero_from_mut
    245. 3.245. nonzero_internals
    246. 3.246. nonzero_ops
    247. 3.247. noop_waker
    248. 3.248. num_midpoint
    249. 3.249. numfmt
    250. 3.250. once_cell_get_mut
    251. 3.251. once_cell_try
    252. 3.252. once_cell_try_insert
    253. 3.253. once_wait
    254. 3.254. one_sided_range
    255. 3.255. option_array_transpose
    256. 3.256. option_zip
    257. 3.257. os_str_display
    258. 3.258. os_str_slice
    259. 3.259. os_string_pathbuf_leak
    260. 3.260. panic_abort
    261. 3.261. panic_always_abort
    262. 3.262. panic_backtrace_config
    263. 3.263. panic_can_unwind
    264. 3.264. panic_internals
    265. 3.265. panic_payload_as_str
    266. 3.266. panic_unwind
    267. 3.267. panic_update_hook
    268. 3.268. path_add_extension
    269. 3.269. path_file_prefix
    270. 3.270. pattern
    271. 3.271. peer_credentials_unix_socket
    272. 3.272. pin_coerce_unsized_trait
    273. 3.273. pin_deref_mut
    274. 3.274. pointer_is_aligned_to
    275. 3.275. pointer_like_trait
    276. 3.276. portable_simd
    277. 3.277. prelude_2024
    278. 3.278. print_internals
    279. 3.279. proc_macro_def_site
    280. 3.280. proc_macro_diagnostic
    281. 3.281. proc_macro_expand
    282. 3.282. proc_macro_internals
    283. 3.283. proc_macro_quote
    284. 3.284. proc_macro_span
    285. 3.285. proc_macro_tracked_env
    286. 3.286. process_exitcode_internals
    287. 3.287. process_internals
    288. 3.288. profiler_runtime_lib
    289. 3.289. ptr_alignment_type
    290. 3.290. ptr_as_ref_unchecked
    291. 3.291. ptr_as_uninit
    292. 3.292. ptr_fn_addr_eq
    293. 3.293. ptr_internals
    294. 3.294. ptr_mask
    295. 3.295. ptr_metadata
    296. 3.296. ptr_sub_ptr
    297. 3.297. pub_crate_should_not_need_unstable_attr
    298. 3.298. random
    299. 3.299. raw_os_error_ty
    300. 3.300. raw_slice_split
    301. 3.301. raw_vec_internals
    302. 3.302. read_buf
    303. 3.303. receiver_trait
    304. 3.304. reentrant_lock
    305. 3.305. restricted_std
    306. 3.306. result_flattening
    307. 3.307. round_char_boundary
    308. 3.308. rt
    309. 3.309. rustc_encodable_decodable
    310. 3.310. sealed
    311. 3.311. seek_stream_len
    312. 3.312. set_ptr_value
    313. 3.313. setgroups
    314. 3.314. sgx_platform
    315. 3.315. sized_type_properties
    316. 3.316. slice_as_chunks
    317. 3.317. slice_concat_ext
    318. 3.318. slice_concat_trait
    319. 3.319. slice_from_ptr_range
    320. 3.320. slice_index_methods
    321. 3.321. slice_internals
    322. 3.322. slice_iter_mut_as_mut_slice
    323. 3.323. slice_partition_dedup
    324. 3.324. slice_pattern
    325. 3.325. slice_ptr_get
    326. 3.326. slice_range
    327. 3.327. slice_split_once
    328. 3.328. slice_swap_unchecked
    329. 3.329. slice_take
    330. 3.330. solid_ext
    331. 3.331. sort_floats
    332. 3.332. split_array
    333. 3.333. split_as_slice
    334. 3.334. std_internals
    335. 3.335. stdarch_arm_feature_detection
    336. 3.336. stdarch_mips_feature_detection
    337. 3.337. stdarch_powerpc_feature_detection
    338. 3.338. stdio_makes_pipe
    339. 3.339. step_trait
    340. 3.340. str_as_str
    341. 3.341. str_from_raw_parts
    342. 3.342. str_from_utf16_endian
    343. 3.343. str_internals
    344. 3.344. str_lines_remainder
    345. 3.345. str_split_inclusive_remainder
    346. 3.346. str_split_remainder
    347. 3.347. str_split_whitespace_remainder
    348. 3.348. strict_overflow_ops
    349. 3.349. strict_provenance_atomic_ptr
    350. 3.350. string_extend_from_within
    351. 3.351. string_from_utf8_lossy_owned
    352. 3.352. string_remove_matches
    353. 3.353. substr_range
    354. 3.354. sync_unsafe_cell
    355. 3.355. tcp_deferaccept
    356. 3.356. tcp_linger
    357. 3.357. tcp_quickack
    358. 3.358. tcplistener_into_incoming
    359. 3.359. test
    360. 3.360. thin_box
    361. 3.361. thread_id_value
    362. 3.362. thread_local_internals
    363. 3.363. thread_raw
    364. 3.364. thread_sleep_until
    365. 3.365. trace_macros
    366. 3.366. track_path
    367. 3.367. transmutability
    368. 3.368. trusted_fused
    369. 3.369. trusted_len
    370. 3.370. trusted_len_next_unchecked
    371. 3.371. trusted_random_access
    372. 3.372. trusted_step
    373. 3.373. try_find
    374. 3.374. try_reserve_kind
    375. 3.375. try_trait_v2
    376. 3.376. try_trait_v2_residual
    377. 3.377. try_trait_v2_yeet
    378. 3.378. try_with_capacity
    379. 3.379. tuple_trait
    380. 3.380. type_ascription
    381. 3.381. ub_checks
    382. 3.382. uefi_std
    383. 3.383. unbounded_shifts
    384. 3.384. unchecked_neg
    385. 3.385. unchecked_shifts
    386. 3.386. unicode_internals
    387. 3.387. unique_rc_arc
    388. 3.388. unix_file_vectored_at
    389. 3.389. unix_set_mark
    390. 3.390. unix_socket_ancillary_data
    391. 3.391. unix_socket_peek
    392. 3.392. unsafe_cell_from_mut
    393. 3.393. unsafe_pin_internals
    394. 3.394. unsigned_is_multiple_of
    395. 3.395. unsigned_signed_diff
    396. 3.396. unsize
    397. 3.397. unwrap_infallible
    398. 3.398. update_panic_count
    399. 3.399. utf16_extra
    400. 3.400. utf16_extra_const
    401. 3.401. variant_count
    402. 3.402. vec_into_raw_parts
    403. 3.403. vec_pop_if
    404. 3.404. vec_push_within_capacity
    405. 3.405. vec_split_at_spare
    406. 3.406. wasi_ext
    407. 3.407. windows_by_handle
    408. 3.408. windows_c
    409. 3.409. windows_change_time
    410. 3.410. windows_handle
    411. 3.411. windows_net
    412. 3.412. windows_process_exit_code_from
    413. 3.413. windows_process_extensions_async_pipes
    414. 3.414. windows_process_extensions_force_quotes
    415. 3.415. windows_process_extensions_main_thread_handle
    416. 3.416. windows_process_extensions_raw_attribute
    417. 3.417. windows_process_extensions_show_window
    418. 3.418. windows_stdio
    419. 3.419. wrapping_int_impl
    420. 3.420. wrapping_next_power_of_two
    421. 3.421. write_all_vectored
    422. 3.422. yeet_desugar_details

The Rust Unstable Book

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