1. The Unstable Book
2. 1. Compiler flags
3. 1. 1.1. autodiff
   2. 1.2. branch_protection
   3. 1.3. cf_protection
   4. 1.4. codegen_backend
   5. 1.5. codegen_options
   6. 1.6. control_flow_guard
   7. 1.7. coverage_options
   8. 1.8. crate_attr
   9. 1.9. debug_info_for_profiling
   10. 1.10. debug_info_type_line_numbers
   11. 1.11. default_visibility
   12. 1.12. direct_access_external_data
   13. 1.13. dump_mono_stats
   14. 1.14. dump_mono_stats_format
   15. 1.15. dwarf_version
   16. 1.16. dylib_lto
   17. 1.17. embed_source
   18. 1.18. emit_stack_sizes
   19. 1.19. emscripten_wasm_eh
   20. 1.20. env_set
   21. 1.21. export_executable_symbols
   22. 1.22. extern_options
   23. 1.23. external_clangrt
   24. 1.24. fixed_x18
   25. 1.25. fmt_debug
   26. 1.26. function_return
   27. 1.27. instrument_xray
   28. 1.28. link_native_libraries
   29. 1.29. linker_features
   30. 1.30. lint_llvm_ir
   31. 1.31. llvm_module_flag
   32. 1.32. location_detail
   33. 1.33. min_function_alignment
   34. 1.34. move_size_limit
   35. 1.35. no_jump_tables
   36. 1.36. no_parallel_llvm
   37. 1.37. no_unique_section_names
   38. 1.38. on_broken_pipe
   39. 1.39. patchable_function_entry
   40. 1.40. print_check_cfg
   41. 1.41. print_supported_crate_types
   42. 1.42. profile_sample_use
   43. 1.43. randomize_layout
   44. 1.44. reg_struct_return
   45. 1.45. regparm
   46. 1.46. remap_cwd_prefix
   47. 1.47. remap_path_scope
   48. 1.48. report_time
   49. 1.49. sanitizer
   50. 1.50. self_profile
   51. 1.51. self_profile_events
   52. 1.52. shell_argfiles
   53. 1.53. small_data_threshold
   54. 1.54. src_hash_algorithm
   55. 1.55. temps_dir
   56. 1.56. tiny_const_eval_limit
   57. 1.57. tls_model
   58. 1.58. ub_checks
   59. 1.59. unsound_mir_opts
   60. 1.60. verbose_asm
   61. 1.61. virtual_function_elimination
   62. 1.62. wasm_c_abi
4. 2. Language features
5. 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_gpu_kernel
   6. 2.6. abi_msp430_interrupt
   7. 2.7. abi_ptx
   8. 2.8. abi_riscv_interrupt
   9. 2.9. abi_unadjusted
   10. 2.10. abi_vectorcall
   11. 2.11. abi_x86_interrupt
   12. 2.12. adt_const_params
   13. 2.13. alloc_error_handler
   14. 2.14. allocator_internals
   15. 2.15. allow_internal_unsafe
   16. 2.16. allow_internal_unstable
   17. 2.17. anonymous_lifetime_in_impl_trait
   18. 2.18. arbitrary_self_types
   19. 2.19. arbitrary_self_types_pointers
   20. 2.20. arm_target_feature
   21. 2.21. asm_experimental_arch
   22. 2.22. asm_experimental_reg
   23. 2.23. asm_goto_with_outputs
   24. 2.24. asm_unwind
   25. 2.25. associated_const_equality
   26. 2.26. associated_type_defaults
   27. 2.27. async_fn_in_dyn_trait
   28. 2.28. async_fn_track_caller
   29. 2.29. async_for_loop
   30. 2.30. async_trait_bounds
   31. 2.31. auto_traits
   32. 2.32. avx512_target_feature
   33. 2.33. box_patterns
   34. 2.34. bpf_target_feature
   35. 2.35. builtin_syntax
   36. 2.36. c_variadic
   37. 2.37. cfg_boolean_literals
   38. 2.38. cfg_contract_checks
   39. 2.39. cfg_emscripten_wasm_eh
   40. 2.40. cfg_overflow_checks
   41. 2.41. cfg_relocation_model
   42. 2.42. cfg_sanitize
   43. 2.43. cfg_sanitizer_cfi
   44. 2.44. cfg_target_compact
   45. 2.45. cfg_target_has_atomic
   46. 2.46. cfg_target_has_atomic_equal_alignment
   47. 2.47. cfg_target_thread_local
   48. 2.48. cfg_ub_checks
   49. 2.49. cfg_version
   50. 2.50. cfi_encoding
   51. 2.51. closure_lifetime_binder
   52. 2.52. closure_track_caller
   53. 2.53. cmse_nonsecure_entry
   54. 2.54. compiler_builtins
   55. 2.55. const_async_blocks
   56. 2.56. const_closures
   57. 2.57. const_destruct
   58. 2.58. const_for
   59. 2.59. const_precise_live_drops
   60. 2.60. const_trait_impl
   61. 2.61. const_try
   62. 2.62. contracts
   63. 2.63. contracts_internals
   64. 2.64. coroutine_clone
   65. 2.65. coroutines
   66. 2.66. coverage_attribute
   67. 2.67. csky_target_feature
   68. 2.68. custom_inner_attributes
   69. 2.69. custom_mir
   70. 2.70. custom_test_frameworks
   71. 2.71. decl_macro
   72. 2.72. default_field_values
   73. 2.73. deprecated_safe
   74. 2.74. deprecated_suggestion
   75. 2.75. deref_patterns
   76. 2.76. doc_auto_cfg
   77. 2.77. doc_cfg
   78. 2.78. doc_cfg_hide
   79. 2.79. doc_masked
   80. 2.80. doc_notable_trait
   81. 2.81. dropck_eyepatch
   82. 2.82. dyn_star
   83. 2.83. ergonomic_clones
   84. 2.84. ermsb_target_feature
   85. 2.85. exhaustive_patterns
   86. 2.86. explicit_tail_calls
   87. 2.87. extended_varargs_abi_support
   88. 2.88. extern_system_varargs
   89. 2.89. extern_types
   90. 2.90. f128
   91. 2.91. f16
   92. 2.92. ffi_const
   93. 2.93. ffi_pure
   94. 2.94. fmt_debug
   95. 2.95. fn_align
   96. 2.96. fn_delegation
   97. 2.97. freeze_impls
   98. 2.98. fundamental
   99. 2.99. gen_blocks
   100. 2.100. generic_arg_infer
   101. 2.101. generic_assert
   102. 2.102. generic_const_exprs
   103. 2.103. generic_const_items
   104. 2.104. generic_const_parameter_types
   105. 2.105. generic_pattern_types
   106. 2.106. global_registration
   107. 2.107. guard_patterns
   108. 2.108. half_open_range_patterns_in_slices
   109. 2.109. hexagon_target_feature
   110. 2.110. if_let_guard
   111. 2.111. impl_trait_in_assoc_type
   112. 2.112. impl_trait_in_bindings
   113. 2.113. impl_trait_in_fn_trait_return
   114. 2.114. import_trait_associated_functions
   115. 2.115. inherent_associated_types
   116. 2.116. inline_const_pat
   117. 2.117. intra_doc_pointers
   118. 2.118. intrinsics
   119. 2.119. keylocker_x86
   120. 2.120. lahfsahf_target_feature
   121. 2.121. lang_items
   122. 2.122. large_assignments
   123. 2.123. lazy_type_alias
   124. 2.124. let_chains
   125. 2.125. link_arg_attribute
   126. 2.126. link_cfg
   127. 2.127. link_llvm_intrinsics
   128. 2.128. linkage
   129. 2.129. loongarch_target_feature
   130. 2.130. m68k_target_feature
   131. 2.131. macro_metavar_expr
   132. 2.132. macro_metavar_expr_concat
   133. 2.133. marker_trait_attr
   134. 2.134. min_generic_const_args
   135. 2.135. min_specialization
   136. 2.136. mips_target_feature
   137. 2.137. more_maybe_bounds
   138. 2.138. more_qualified_paths
   139. 2.139. multiple_supertrait_upcastable
   140. 2.140. must_not_suspend
   141. 2.141. mut_ref
   142. 2.142. naked_functions
   143. 2.143. naked_functions_target_feature
   144. 2.144. native_link_modifiers_as_needed
   145. 2.145. needs_panic_runtime
   146. 2.146. negative_bounds
   147. 2.147. negative_impls
   148. 2.148. never_patterns
   149. 2.149. never_type
   150. 2.150. never_type_fallback
   151. 2.151. new_range
   152. 2.152. no_core
   153. 2.153. no_sanitize
   154. 2.154. non_exhaustive_omitted_patterns_lint
   155. 2.155. non_lifetime_binders
   156. 2.156. offset_of_enum
   157. 2.157. offset_of_slice
   158. 2.158. omit_gdb_pretty_printer_section
   159. 2.159. optimize_attribute
   160. 2.160. panic_runtime
   161. 2.161. patchable_function_entry
   162. 2.162. pattern_complexity_limit
   163. 2.163. pattern_types
   164. 2.164. pin_ergonomics
   165. 2.165. postfix_match
   166. 2.166. powerpc_target_feature
   167. 2.167. prelude_import
   168. 2.168. prfchw_target_feature
   169. 2.169. proc_macro_hygiene
   170. 2.170. profiler_runtime
   171. 2.171. raw_dylib_elf
   172. 2.172. ref_pat_eat_one_layer_2024
   173. 2.173. ref_pat_eat_one_layer_2024_structural
   174. 2.174. register_tool
   175. 2.175. repr_simd
   176. 2.176. repr128
   177. 2.177. return_type_notation
   178. 2.178. riscv_target_feature
   179. 2.179. rtm_target_feature
   180. 2.180. rust_cold_cc
   181. 2.181. rustc_allow_const_fn_unstable
   182. 2.182. rustc_attrs
   183. 2.183. rustc_private
   184. 2.184. rustdoc_internals
   185. 2.185. rustdoc_missing_doc_code_examples
   186. 2.186. s390x_target_feature
   187. 2.187. sha512_sm_x86
   188. 2.188. simd_ffi
   189. 2.189. sparc_target_feature
   190. 2.190. specialization
   191. 2.191. sse4a_target_feature
   192. 2.192. staged_api
   193. 2.193. stmt_expr_attributes
   194. 2.194. strict_provenance_lints
   195. 2.195. string_deref_patterns
   196. 2.196. structural_match
   197. 2.197. supertrait_item_shadowing
   198. 2.198. tbm_target_feature
   199. 2.199. test_unstable_lint
   200. 2.200. thread_local
   201. 2.201. trait_alias
   202. 2.202. transmute_generic_consts
   203. 2.203. transparent_unions
   204. 2.204. trivial_bounds
   205. 2.205. try_blocks
   206. 2.206. type_alias_impl_trait
   207. 2.207. type_changing_struct_update
   208. 2.208. unboxed_closures
   209. 2.209. unqualified_local_imports
   210. 2.210. unsafe_binders
   211. 2.211. unsafe_fields
   212. 2.212. unsized_const_params
   213. 2.213. unsized_fn_params
   214. 2.214. unsized_locals
   215. 2.215. used_with_arg
   216. 2.216. wasm_target_feature
   217. 2.217. where_clause_attrs
   218. 2.218. with_negative_coherence
   219. 2.219. x86_amx_intrinsics
   220. 2.220. x87_target_feature
   221. 2.221. xop_target_feature
   222. 2.222. yeet_expr
   223. 2.223. yield_expr
6. 3. Library Features
7. 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. alloctests
   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. atomic_try_update
   27. 3.27. autodiff
   28. 3.28. backtrace_frames
   29. 3.29. bigint_helper_methods
   30. 3.30. bikeshed_guaranteed_no_drop
   31. 3.31. binary_heap_drain_sorted
   32. 3.32. binary_heap_into_iter_sorted
   33. 3.33. binary_heap_peek_mut_refresh
   34. 3.34. bound_as_ref
   35. 3.35. box_as_ptr
   36. 3.36. box_into_boxed_slice
   37. 3.37. box_into_inner
   38. 3.38. box_vec_non_null
   39. 3.39. breakpoint
   40. 3.40. bstr
   41. 3.41. bstr_internals
   42. 3.42. btree_cursors
   43. 3.43. btree_entry_insert
   44. 3.44. btree_extract_if
   45. 3.45. btree_set_entry
   46. 3.46. btreemap_alloc
   47. 3.47. buf_read_has_data_left
   48. 3.48. bufreader_peek
   49. 3.49. c_size_t
   50. 3.50. c_str_module
   51. 3.51. c_void_variant
   52. 3.52. can_vector
   53. 3.53. cell_leak
   54. 3.54. cell_update
   55. 3.55. cfg_accessible
   56. 3.56. cfg_eval
   57. 3.57. cfg_match
   58. 3.58. char_internals
   59. 3.59. char_max_len
   60. 3.60. clone_to_uninit
   61. 3.61. cmp_minmax
   62. 3.62. coerce_pointee_validated
   63. 3.63. coerce_unsized
   64. 3.64. cold_path
   65. 3.65. concat_bytes
   66. 3.66. concat_idents
   67. 3.67. const_alloc_error
   68. 3.68. const_array_as_mut_slice
   69. 3.69. const_array_each_ref
   70. 3.70. const_btree_len
   71. 3.71. const_carrying_mul_add
   72. 3.72. const_cell
   73. 3.73. const_deref
   74. 3.74. const_eq_ignore_ascii_case
   75. 3.75. const_eval_select
   76. 3.76. const_format_args
   77. 3.77. const_heap
   78. 3.78. const_ops
   79. 3.79. const_range_bounds
   80. 3.80. const_raw_ptr_comparison
   81. 3.81. const_slice_from_mut_ptr_range
   82. 3.82. const_slice_from_ptr_range
   83. 3.83. const_slice_reverse
   84. 3.84. const_split_off_first_last
   85. 3.85. const_swap_nonoverlapping
   86. 3.86. const_type_id
   87. 3.87. const_type_name
   88. 3.88. container_error_extra
   89. 3.89. context_ext
   90. 3.90. control_flow_into_value
   91. 3.91. convert_float_to_int
   92. 3.92. core_intrinsics
   93. 3.93. core_intrinsics_fallbacks
   94. 3.94. core_io_borrowed_buf
   95. 3.95. core_private_bignum
   96. 3.96. core_private_diy_float
   97. 3.97. coroutine_trait
   98. 3.98. cow_is_borrowed
   99. 3.99. cstr_bytes
   100. 3.100. cstr_internals
   101. 3.101. cursor_split
   102. 3.102. deadline_api
   103. 3.103. debug_closure_helpers
   104. 3.104. dec2flt
   105. 3.105. deref_pure_trait
   106. 3.106. derive_clone_copy
   107. 3.107. derive_coerce_pointee
   108. 3.108. derive_const
   109. 3.109. derive_eq
   110. 3.110. dir_entry_ext2
   111. 3.111. discriminant_kind
   112. 3.112. disjoint_bitor
   113. 3.113. dispatch_from_dyn
   114. 3.114. downcast_unchecked
   115. 3.115. drain_keep_rest
   116. 3.116. duration_constants
   117. 3.117. duration_constructors
   118. 3.118. duration_millis_float
   119. 3.119. duration_units
   120. 3.120. edition_panic
   121. 3.121. error_generic_member_access
   122. 3.122. error_iter
   123. 3.123. error_reporter
   124. 3.124. error_type_id
   125. 3.125. exact_size_is_empty
   126. 3.126. exclusive_wrapper
   127. 3.127. exit_status_error
   128. 3.128. exitcode_exit_method
   129. 3.129. extend_one
   130. 3.130. extend_one_unchecked
   131. 3.131. fd
   132. 3.132. fd_read
   133. 3.133. file_buffered
   134. 3.134. file_lock
   135. 3.135. float_erf
   136. 3.136. float_gamma
   137. 3.137. float_minimum_maximum
   138. 3.138. flt2dec
   139. 3.139. fmt_helpers_for_derive
   140. 3.140. fmt_internals
   141. 3.141. fn_ptr_trait
   142. 3.142. fn_traits
   143. 3.143. forget_unsized
   144. 3.144. format_args_nl
   145. 3.145. formatting_options
   146. 3.146. freeze
   147. 3.147. future_join
   148. 3.148. gen_future
   149. 3.149. generic_assert_internals
   150. 3.150. get_disjoint_mut_helpers
   151. 3.151. get_mut_unchecked
   152. 3.152. hash_set_entry
   153. 3.153. hasher_prefixfree_extras
   154. 3.154. hashmap_internals
   155. 3.155. hint_must_use
   156. 3.156. inplace_iteration
   157. 3.157. int_from_ascii
   158. 3.158. int_roundings
   159. 3.159. integer_atomics
   160. 3.160. internal_impls_macro
   161. 3.161. internal_output_capture
   162. 3.162. io_const_error
   163. 3.163. io_const_error_internals
   164. 3.164. io_error_inprogress
   165. 3.165. io_error_more
   166. 3.166. io_error_uncategorized
   167. 3.167. io_slice_as_bytes
   168. 3.168. ip
   169. 3.169. ip_as_octets
   170. 3.170. ip_from
   171. 3.171. is_ascii_octdigit
   172. 3.172. is_loongarch_feature_detected
   173. 3.173. is_riscv_feature_detected
   174. 3.174. isolate_most_least_significant_one
   175. 3.175. iter_advance_by
   176. 3.176. iter_array_chunks
   177. 3.177. iter_chain
   178. 3.178. iter_collect_into
   179. 3.179. iter_from_coroutine
   180. 3.180. iter_intersperse
   181. 3.181. iter_is_partitioned
   182. 3.182. iter_map_windows
   183. 3.183. iter_next_chunk
   184. 3.184. iter_order_by
   185. 3.185. iter_partition_in_place
   186. 3.186. iterator_try_collect
   187. 3.187. iterator_try_reduce
   188. 3.188. junction_point
   189. 3.189. layout_for_ptr
   190. 3.190. lazy_cell_into_inner
   191. 3.191. lazy_get
   192. 3.192. legacy_receiver_trait
   193. 3.193. liballoc_internals
   194. 3.194. libstd_sys_internals
   195. 3.195. likely_unlikely
   196. 3.196. linked_list_cursors
   197. 3.197. linked_list_remove
   198. 3.198. linked_list_retain
   199. 3.199. linux_pidfd
   200. 3.200. local_waker
   201. 3.201. lock_value_accessors
   202. 3.202. log_syntax
   203. 3.203. map_try_insert
   204. 3.204. mapped_lock_guards
   205. 3.205. maybe_uninit_array_assume_init
   206. 3.206. maybe_uninit_as_bytes
   207. 3.207. maybe_uninit_fill
   208. 3.208. maybe_uninit_slice
   209. 3.209. maybe_uninit_uninit_array_transpose
   210. 3.210. maybe_uninit_write_slice
   211. 3.211. mem_copy_fn
   212. 3.212. mixed_integer_ops_unsigned_sub
   213. 3.213. more_float_constants
   214. 3.214. mpmc_channel
   215. 3.215. new_range_api
   216. 3.216. new_zeroed_alloc
   217. 3.217. non_null_from_ref
   218. 3.218. nonnull_provenance
   219. 3.219. nonzero_bitwise
   220. 3.220. nonzero_from_mut
   221. 3.221. nonzero_internals
   222. 3.222. nonzero_ops
   223. 3.223. numfmt
   224. 3.224. once_cell_get_mut
   225. 3.225. once_cell_try
   226. 3.226. once_cell_try_insert
   227. 3.227. one_sided_range
   228. 3.228. option_array_transpose
   229. 3.229. option_zip
   230. 3.230. os_str_slice
   231. 3.231. os_string_pathbuf_leak
   232. 3.232. os_string_truncate
   233. 3.233. panic_abort
   234. 3.234. panic_always_abort
   235. 3.235. panic_backtrace_config
   236. 3.236. panic_can_unwind
   237. 3.237. panic_internals
   238. 3.238. panic_payload_as_str
   239. 3.239. panic_unwind
   240. 3.240. panic_update_hook
   241. 3.241. partial_ord_chaining_methods
   242. 3.242. path_add_extension
   243. 3.243. path_file_prefix
   244. 3.244. pattern
   245. 3.245. pattern_type_macro
   246. 3.246. pattern_type_range_trait
   247. 3.247. peer_credentials_unix_socket
   248. 3.248. phantom_variance_markers
   249. 3.249. pin_coerce_unsized_trait
   250. 3.250. pointer_is_aligned_to
   251. 3.251. pointer_like_trait
   252. 3.252. portable_simd
   253. 3.253. prelude_future
   254. 3.254. prelude_next
   255. 3.255. print_internals
   256. 3.256. proc_macro_def_site
   257. 3.257. proc_macro_diagnostic
   258. 3.258. proc_macro_expand
   259. 3.259. proc_macro_internals
   260. 3.260. proc_macro_quote
   261. 3.261. proc_macro_span
   262. 3.262. proc_macro_totokens
   263. 3.263. proc_macro_tracked_env
   264. 3.264. process_exitcode_internals
   265. 3.265. process_internals
   266. 3.266. profiler_runtime_lib
   267. 3.267. ptr_alignment_type
   268. 3.268. ptr_as_ref_unchecked
   269. 3.269. ptr_as_uninit
   270. 3.270. ptr_internals
   271. 3.271. ptr_mask
   272. 3.272. ptr_metadata
   273. 3.273. pub_crate_should_not_need_unstable_attr
   274. 3.274. random
   275. 3.275. range_bounds_is_empty
   276. 3.276. range_into_bounds
   277. 3.277. raw_os_error_ty
   278. 3.278. raw_slice_split
   279. 3.279. raw_vec_internals
   280. 3.280. read_buf
   281. 3.281. reentrant_lock
   282. 3.282. restricted_std
   283. 3.283. result_flattening
   284. 3.284. round_char_boundary
   285. 3.285. rt
   286. 3.286. rwlock_downgrade
   287. 3.287. sealed
   288. 3.288. seek_stream_len
   289. 3.289. select_unpredictable
   290. 3.290. set_ptr_value
   291. 3.291. setgroups
   292. 3.292. sgx_platform
   293. 3.293. sized_type_properties
   294. 3.294. slice_as_array
   295. 3.295. slice_as_chunks
   296. 3.296. slice_concat_ext
   297. 3.297. slice_concat_trait
   298. 3.298. slice_from_ptr_range
   299. 3.299. slice_index_methods
   300. 3.300. slice_internals
   301. 3.301. slice_iter_mut_as_mut_slice
   302. 3.302. slice_partition_dedup
   303. 3.303. slice_pattern
   304. 3.304. slice_ptr_get
   305. 3.305. slice_range
   306. 3.306. slice_split_once
   307. 3.307. slice_swap_unchecked
   308. 3.308. solid_ext
   309. 3.309. sort_floats
   310. 3.310. split_array
   311. 3.311. split_as_slice
   312. 3.312. std_internals
   313. 3.313. stdarch_arm_feature_detection
   314. 3.314. stdarch_mips_feature_detection
   315. 3.315. stdarch_powerpc_feature_detection
   316. 3.316. stdarch_s390x_feature_detection
   317. 3.317. stdio_makes_pipe
   318. 3.318. step_trait
   319. 3.319. str_as_str
   320. 3.320. str_from_raw_parts
   321. 3.321. str_from_utf16_endian
   322. 3.322. str_internals
   323. 3.323. str_lines_remainder
   324. 3.324. str_split_inclusive_remainder
   325. 3.325. str_split_remainder
   326. 3.326. str_split_whitespace_remainder
   327. 3.327. strict_overflow_ops
   328. 3.328. strict_provenance_atomic_ptr
   329. 3.329. string_from_utf8_lossy_owned
   330. 3.330. string_into_chars
   331. 3.331. string_remove_matches
   332. 3.332. substr_range
   333. 3.333. sync_poison_mod
   334. 3.334. sync_unsafe_cell
   335. 3.335. tcp_deferaccept
   336. 3.336. tcp_linger
   337. 3.337. tcp_quickack
   338. 3.338. tcplistener_into_incoming
   339. 3.339. temporary_niche_types
   340. 3.340. test
   341. 3.341. thin_box
   342. 3.342. thread_id_value
   343. 3.343. thread_local_internals
   344. 3.344. thread_raw
   345. 3.345. thread_sleep_until
   346. 3.346. thread_spawn_hook
   347. 3.347. trace_macros
   348. 3.348. track_path
   349. 3.349. transmutability
   350. 3.350. trusted_fused
   351. 3.351. trusted_len
   352. 3.352. trusted_len_next_unchecked
   353. 3.353. trusted_random_access
   354. 3.354. trusted_step
   355. 3.355. try_find
   356. 3.356. try_reserve_kind
   357. 3.357. try_trait_v2
   358. 3.358. try_trait_v2_residual
   359. 3.359. try_trait_v2_yeet
   360. 3.360. try_with_capacity
   361. 3.361. tuple_trait
   362. 3.362. type_ascription
   363. 3.363. ub_checks
   364. 3.364. uefi_std
   365. 3.365. unchecked_neg
   366. 3.366. unchecked_shifts
   367. 3.367. unicode_internals
   368. 3.368. unique_rc_arc
   369. 3.369. unix_file_vectored_at
   370. 3.370. unix_set_mark
   371. 3.371. unix_socket_ancillary_data
   372. 3.372. unix_socket_peek
   373. 3.373. unsafe_cell_access
   374. 3.374. unsafe_pin_internals
   375. 3.375. unsigned_nonzero_div_ceil
   376. 3.376. unsigned_signed_diff
   377. 3.377. unsize
   378. 3.378. unwrap_infallible
   379. 3.379. update_panic_count
   380. 3.380. utf16_extra
   381. 3.381. variant_count
   382. 3.382. vec_deque_iter_as_slices
   383. 3.383. vec_deque_pop_if
   384. 3.384. vec_into_raw_parts
   385. 3.385. vec_push_within_capacity
   386. 3.386. vec_split_at_spare
   387. 3.387. wasi_ext
   388. 3.388. windows_by_handle
   389. 3.389. windows_c
   390. 3.390. windows_change_time
   391. 3.391. windows_handle
   392. 3.392. windows_net
   393. 3.393. windows_process_exit_code_from
   394. 3.394. windows_process_extensions_async_pipes
   395. 3.395. windows_process_extensions_force_quotes
   396. 3.396. windows_process_extensions_main_thread_handle
   397. 3.397. windows_process_extensions_raw_attribute
   398. 3.398. windows_process_extensions_show_window
   399. 3.399. windows_stdio
   400. 3.400. wrapping_int_impl
   401. 3.401. wrapping_next_power_of_two
   402. 3.402. write_all_vectored
   403. 3.403. yeet_desugar_details