1. The Unstable Book
2. 1. Compiler environment variables
3. 1. 1.1. RUSTC_BOOTSTRAP
   2. 1.2. RUSTC_OVERRIDE_VERSION_STRING
4. 2. Compiler flags
5. 1. 2.1. allow_features
   2. 2.2. autodiff
   3. 2.3. branch_protection
   4. 2.4. cf_protection
   5. 2.5. codegen_backend
   6. 2.6. codegen_options
   7. 2.7. control_flow_guard
   8. 2.8. coverage_options
   9. 2.9. crate_attr
   10. 2.10. debug_info_for_profiling
   11. 2.11. debug_info_type_line_numbers
   12. 2.12. default_visibility
   13. 2.13. direct_access_external_data
   14. 2.14. dump_mono_stats
   15. 2.15. dump_mono_stats_format
   16. 2.16. dylib_lto
   17. 2.17. eagerly_emit_delayed_bugs
   18. 2.18. embed_metadata
   19. 2.19. embed_source
   20. 2.20. emit_stack_sizes
   21. 2.21. emscripten_wasm_eh
   22. 2.22. env_set
   23. 2.23. export_executable_symbols
   24. 2.24. extern_options
   25. 2.25. external_clangrt
   26. 2.26. fixed_x18
   27. 2.27. fmt_debug
   28. 2.28. function_return
   29. 2.29. hint_mostly_unused
   30. 2.30. instrument_xray
   31. 2.31. link_native_libraries
   32. 2.32. linker_features
   33. 2.33. lint_llvm_ir
   34. 2.34. llvm_module_flag
   35. 2.35. location_detail
   36. 2.36. macro_stats
   37. 2.37. min_function_alignment
   38. 2.38. move_size_limit
   39. 2.39. no_jump_tables
   40. 2.40. no_parallel_llvm
   41. 2.41. no_steal_thir
   42. 2.42. no_unique_section_names
   43. 2.43. on_broken_pipe
   44. 2.44. patchable_function_entry
   45. 2.45. print_check_cfg
   46. 2.46. print_crate_root_lint_levels
   47. 2.47. print_supported_crate_types
   48. 2.48. profile_sample_use
   49. 2.49. randomize_layout
   50. 2.50. reg_struct_return
   51. 2.51. regparm
   52. 2.52. remap_cwd_prefix
   53. 2.53. remap_path_scope
   54. 2.54. report_time
   55. 2.55. sanitizer
   56. 2.56. self_profile
   57. 2.57. self_profile_events
   58. 2.58. shell_argfiles
   59. 2.59. small_data_threshold
   60. 2.60. src_hash_algorithm
   61. 2.61. temps_dir
   62. 2.62. tiny_const_eval_limit
   63. 2.63. tls_model
   64. 2.64. track_diagnostics
   65. 2.65. treat_err_as_bug
   66. 2.66. ub_checks
   67. 2.67. unsound_mir_opts
   68. 2.68. verbose_asm
   69. 2.69. virtual_function_elimination
   70. 2.70. wasm_c_abi
6. 3. Language features
7. 1. 3.1. aarch64_unstable_target_feature
   2. 3.2. aarch64_ver_target_feature
   3. 3.3. abi_avr_interrupt
   4. 3.4. abi_c_cmse_nonsecure_call
   5. 3.5. abi_custom
   6. 3.6. abi_gpu_kernel
   7. 3.7. abi_msp430_interrupt
   8. 3.8. abi_ptx
   9. 3.9. abi_riscv_interrupt
   10. 3.10. abi_unadjusted
   11. 3.11. abi_vectorcall
   12. 3.12. abi_x86_interrupt
   13. 3.13. adt_const_params
   14. 3.14. alloc_error_handler
   15. 3.15. allocator_internals
   16. 3.16. allow_internal_unsafe
   17. 3.17. allow_internal_unstable
   18. 3.18. anonymous_lifetime_in_impl_trait
   19. 3.19. apx_target_feature
   20. 3.20. arbitrary_self_types
   21. 3.21. arbitrary_self_types_pointers
   22. 3.22. arm_target_feature
   23. 3.23. asm_cfg
   24. 3.24. asm_experimental_arch
   25. 3.25. asm_experimental_reg
   26. 3.26. asm_goto_with_outputs
   27. 3.27. asm_unwind
   28. 3.28. associated_const_equality
   29. 3.29. associated_type_defaults
   30. 3.30. async_drop
   31. 3.31. async_fn_in_dyn_trait
   32. 3.32. async_fn_track_caller
   33. 3.33. async_for_loop
   34. 3.34. async_trait_bounds
   35. 3.35. auto_traits
   36. 3.36. avx10_target_feature
   37. 3.37. box_patterns
   38. 3.38. bpf_target_feature
   39. 3.39. builtin_syntax
   40. 3.40. c_variadic
   41. 3.41. cfg_contract_checks
   42. 3.42. cfg_emscripten_wasm_eh
   43. 3.43. cfg_overflow_checks
   44. 3.44. cfg_relocation_model
   45. 3.45. cfg_sanitize
   46. 3.46. cfg_sanitizer_cfi
   47. 3.47. cfg_target_compact
   48. 3.48. cfg_target_has_atomic
   49. 3.49. cfg_target_has_atomic_equal_alignment
   50. 3.50. cfg_target_has_reliable_f16_f128
   51. 3.51. cfg_target_thread_local
   52. 3.52. cfg_ub_checks
   53. 3.53. cfg_version
   54. 3.54. cfi_encoding
   55. 3.55. closure_lifetime_binder
   56. 3.56. closure_track_caller
   57. 3.57. cmse_nonsecure_entry
   58. 3.58. compiler_builtins
   59. 3.59. const_async_blocks
   60. 3.60. const_closures
   61. 3.61. const_destruct
   62. 3.62. const_for
   63. 3.63. const_precise_live_drops
   64. 3.64. const_trait_impl
   65. 3.65. const_try
   66. 3.66. contracts
   67. 3.67. contracts_internals
   68. 3.68. coroutine_clone
   69. 3.69. coroutines
   70. 3.70. coverage_attribute
   71. 3.71. csky_target_feature
   72. 3.72. custom_inner_attributes
   73. 3.73. custom_mir
   74. 3.74. custom_test_frameworks
   75. 3.75. decl_macro
   76. 3.76. default_field_values
   77. 3.77. deprecated_safe
   78. 3.78. deprecated_suggestion
   79. 3.79. deref_patterns
   80. 3.80. doc_auto_cfg
   81. 3.81. doc_cfg
   82. 3.82. doc_cfg_hide
   83. 3.83. doc_masked
   84. 3.84. doc_notable_trait
   85. 3.85. dropck_eyepatch
   86. 3.86. dyn_star
   87. 3.87. ergonomic_clones
   88. 3.88. ermsb_target_feature
   89. 3.89. exhaustive_patterns
   90. 3.90. explicit_extern_abis
   91. 3.91. explicit_tail_calls
   92. 3.92. export_stable
   93. 3.93. extended_varargs_abi_support
   94. 3.94. extern_system_varargs
   95. 3.95. extern_types
   96. 3.96. f128
   97. 3.97. f16
   98. 3.98. ffi_const
   99. 3.99. ffi_pure
   100. 3.100. fmt_debug
   101. 3.101. fn_align
   102. 3.102. fn_delegation
   103. 3.103. freeze_impls
   104. 3.104. frontmatter
   105. 3.105. fundamental
   106. 3.106. gen_blocks
   107. 3.107. generic_assert
   108. 3.108. generic_const_exprs
   109. 3.109. generic_const_items
   110. 3.110. generic_const_parameter_types
   111. 3.111. generic_pattern_types
   112. 3.112. global_registration
   113. 3.113. guard_patterns
   114. 3.114. half_open_range_patterns_in_slices
   115. 3.115. hexagon_target_feature
   116. 3.116. if_let_guard
   117. 3.117. impl_trait_in_assoc_type
   118. 3.118. impl_trait_in_bindings
   119. 3.119. impl_trait_in_fn_trait_return
   120. 3.120. import_trait_associated_functions
   121. 3.121. inherent_associated_types
   122. 3.122. intra_doc_pointers
   123. 3.123. intrinsics
   124. 3.124. lahfsahf_target_feature
   125. 3.125. lang_items
   126. 3.126. large_assignments
   127. 3.127. lazy_type_alias
   128. 3.128. let_chains
   129. 3.129. link_arg_attribute
   130. 3.130. link_cfg
   131. 3.131. link_llvm_intrinsics
   132. 3.132. linkage
   133. 3.133. loongarch_target_feature
   134. 3.134. m68k_target_feature
   135. 3.135. macro_metavar_expr
   136. 3.136. macro_metavar_expr_concat
   137. 3.137. marker_trait_attr
   138. 3.138. min_generic_const_args
   139. 3.139. min_specialization
   140. 3.140. mips_target_feature
   141. 3.141. more_maybe_bounds
   142. 3.142. more_qualified_paths
   143. 3.143. movrs_target_feature
   144. 3.144. multiple_supertrait_upcastable
   145. 3.145. must_not_suspend
   146. 3.146. mut_ref
   147. 3.147. naked_functions_rustic_abi
   148. 3.148. naked_functions_target_feature
   149. 3.149. native_link_modifiers_as_needed
   150. 3.150. needs_panic_runtime
   151. 3.151. negative_bounds
   152. 3.152. negative_impls
   153. 3.153. never_patterns
   154. 3.154. never_type
   155. 3.155. never_type_fallback
   156. 3.156. new_range
   157. 3.157. no_core
   158. 3.158. no_sanitize
   159. 3.159. non_exhaustive_omitted_patterns_lint
   160. 3.160. non_lifetime_binders
   161. 3.161. offset_of_enum
   162. 3.162. offset_of_slice
   163. 3.163. omit_gdb_pretty_printer_section
   164. 3.164. optimize_attribute
   165. 3.165. panic_runtime
   166. 3.166. patchable_function_entry
   167. 3.167. pattern_complexity_limit
   168. 3.168. pattern_types
   169. 3.169. pin_ergonomics
   170. 3.170. postfix_match
   171. 3.171. powerpc_target_feature
   172. 3.172. prelude_import
   173. 3.173. prfchw_target_feature
   174. 3.174. proc_macro_hygiene
   175. 3.175. profiler_runtime
   176. 3.176. raw_dylib_elf
   177. 3.177. ref_pat_eat_one_layer_2024
   178. 3.178. ref_pat_eat_one_layer_2024_structural
   179. 3.179. register_tool
   180. 3.180. repr_simd
   181. 3.181. return_type_notation
   182. 3.182. riscv_target_feature
   183. 3.183. rtm_target_feature
   184. 3.184. rust_cold_cc
   185. 3.185. rustc_allow_const_fn_unstable
   186. 3.186. rustc_attrs
   187. 3.187. rustc_private
   188. 3.188. rustdoc_internals
   189. 3.189. rustdoc_missing_doc_code_examples
   190. 3.190. s390x_target_feature
   191. 3.191. simd_ffi
   192. 3.192. sized_hierarchy
   193. 3.193. sparc_target_feature
   194. 3.194. specialization
   195. 3.195. sse4a_target_feature
   196. 3.196. staged_api
   197. 3.197. stmt_expr_attributes
   198. 3.198. strict_provenance_lints
   199. 3.199. string_deref_patterns
   200. 3.200. structural_match
   201. 3.201. super_let
   202. 3.202. supertrait_item_shadowing
   203. 3.203. tbm_target_feature
   204. 3.204. test_unstable_lint
   205. 3.205. thread_local
   206. 3.206. trait_alias
   207. 3.207. transmute_generic_consts
   208. 3.208. transparent_unions
   209. 3.209. trivial_bounds
   210. 3.210. try_blocks
   211. 3.211. type_alias_impl_trait
   212. 3.212. type_changing_struct_update
   213. 3.213. unboxed_closures
   214. 3.214. unqualified_local_imports
   215. 3.215. unsafe_binders
   216. 3.216. unsafe_fields
   217. 3.217. unsized_const_params
   218. 3.218. unsized_fn_params
   219. 3.219. used_with_arg
   220. 3.220. wasm_target_feature
   221. 3.221. where_clause_attrs
   222. 3.222. with_negative_coherence
   223. 3.223. x86_amx_intrinsics
   224. 3.224. x87_target_feature
   225. 3.225. xop_target_feature
   226. 3.226. yeet_expr
   227. 3.227. yield_expr
8. 4. Library Features
9. 1. 4.1. abort_unwind
   2. 4.2. acceptfilter
   3. 4.3. addr_parse_ascii
   4. 4.4. align_to_uninit_mut
   5. 4.5. alloc_error_hook
   6. 4.6. alloc_internals
   7. 4.7. alloc_layout_extra
   8. 4.8. allocator_api
   9. 4.9. alloctests
   10. 4.10. arc_is_unique
   11. 4.11. array_chunks
   12. 4.12. array_into_iter_constructors
   13. 4.13. array_ptr_get
   14. 4.14. array_repeat
   15. 4.15. array_try_from_fn
   16. 4.16. array_try_map
   17. 4.17. array_windows
   18. 4.18. as_array_of_cells
   19. 4.19. ascii_char
   20. 4.20. ascii_char_variants
   21. 4.21. assert_matches
   22. 4.22. async_fn_traits
   23. 4.23. async_gen_internals
   24. 4.24. async_iter_from_iter
   25. 4.25. async_iterator
   26. 4.26. atomic_from_mut
   27. 4.27. atomic_internals
   28. 4.28. atomic_try_update
   29. 4.29. autodiff
   30. 4.30. backtrace_frames
   31. 4.31. bigint_helper_methods
   32. 4.32. bikeshed_guaranteed_no_drop
   33. 4.33. binary_heap_drain_sorted
   34. 4.34. binary_heap_into_iter_sorted
   35. 4.35. binary_heap_peek_mut_refresh
   36. 4.36. bound_as_ref
   37. 4.37. box_as_ptr
   38. 4.38. box_into_boxed_slice
   39. 4.39. box_into_inner
   40. 4.40. box_vec_non_null
   41. 4.41. breakpoint
   42. 4.42. bstr
   43. 4.43. bstr_internals
   44. 4.44. btree_cursors
   45. 4.45. btree_entry_insert
   46. 4.46. btree_extract_if
   47. 4.47. btree_set_entry
   48. 4.48. btreemap_alloc
   49. 4.49. buf_read_has_data_left
   50. 4.50. bufreader_peek
   51. 4.51. c_size_t
   52. 4.52. c_void_variant
   53. 4.53. can_vector
   54. 4.54. cell_leak
   55. 4.55. cfg_accessible
   56. 4.56. cfg_eval
   57. 4.57. cfg_select
   58. 4.58. char_internals
   59. 4.59. char_max_len
   60. 4.60. clone_to_uninit
   61. 4.61. cmp_minmax
   62. 4.62. coerce_pointee_validated
   63. 4.63. coerce_unsized
   64. 4.64. cold_path
   65. 4.65. concat_bytes
   66. 4.66. concat_idents
   67. 4.67. const_alloc_error
   68. 4.68. const_array_each_ref
   69. 4.69. const_btree_len
   70. 4.70. const_carrying_mul_add
   71. 4.71. const_clone
   72. 4.72. const_deref
   73. 4.73. const_eval_select
   74. 4.74. const_float_round_methods
   75. 4.75. const_format_args
   76. 4.76. const_heap
   77. 4.77. const_ops
   78. 4.78. const_pathbuf_osstring_new
   79. 4.79. const_range_bounds
   80. 4.80. const_raw_ptr_comparison
   81. 4.81. const_slice_from_mut_ptr_range
   82. 4.82. const_slice_from_ptr_range
   83. 4.83. const_slice_make_iter
   84. 4.84. const_slice_reverse
   85. 4.85. const_split_off_first_last
   86. 4.86. const_type_id
   87. 4.87. const_type_name
   88. 4.88. container_error_extra
   89. 4.89. context_ext
   90. 4.90. control_flow_into_value
   91. 4.91. convert_float_to_int
   92. 4.92. core_float_math
   93. 4.93. core_intrinsics
   94. 4.94. core_intrinsics_fallbacks
   95. 4.95. core_io_borrowed_buf
   96. 4.96. core_private_bignum
   97. 4.97. core_private_diy_float
   98. 4.98. coroutine_trait
   99. 4.99. cow_is_borrowed
   100. 4.100. cstr_bytes
   101. 4.101. cstr_display
   102. 4.102. cstr_internals
   103. 4.103. cursor_split
   104. 4.104. deadline_api
   105. 4.105. debug_closure_helpers
   106. 4.106. dec2flt
   107. 4.107. deref_pure_trait
   108. 4.108. derive_clone_copy
   109. 4.109. derive_coerce_pointee
   110. 4.110. derive_const
   111. 4.111. derive_eq
   112. 4.112. dir_entry_ext2
   113. 4.113. discriminant_kind
   114. 4.114. disjoint_bitor
   115. 4.115. dispatch_from_dyn
   116. 4.116. downcast_unchecked
   117. 4.117. drain_keep_rest
   118. 4.118. duration_constants
   119. 4.119. duration_constructors
   120. 4.120. duration_constructors_lite
   121. 4.121. duration_millis_float
   122. 4.122. duration_units
   123. 4.123. edition_panic
   124. 4.124. error_generic_member_access
   125. 4.125. error_iter
   126. 4.126. error_reporter
   127. 4.127. error_type_id
   128. 4.128. exact_div
   129. 4.129. exact_size_is_empty
   130. 4.130. exclusive_wrapper
   131. 4.131. exit_status_error
   132. 4.132. exitcode_exit_method
   133. 4.133. extend_one
   134. 4.134. extend_one_unchecked
   135. 4.135. fd
   136. 4.136. fd_read
   137. 4.137. file_buffered
   138. 4.138. file_with_nul
   139. 4.139. float_algebraic
   140. 4.140. float_erf
   141. 4.141. float_gamma
   142. 4.142. float_minimum_maximum
   143. 4.143. flt2dec
   144. 4.144. fmt_helpers_for_derive
   145. 4.145. fmt_internals
   146. 4.146. fn_ptr_trait
   147. 4.147. fn_traits
   148. 4.148. forget_unsized
   149. 4.149. format_args_nl
   150. 4.150. formatting_options
   151. 4.151. freeze
   152. 4.152. future_join
   153. 4.153. gen_future
   154. 4.154. generic_assert_internals
   155. 4.155. generic_atomic
   156. 4.156. get_disjoint_mut_helpers
   157. 4.157. get_mut_unchecked
   158. 4.158. hash_set_entry
   159. 4.159. hasher_prefixfree_extras
   160. 4.160. hashmap_internals
   161. 4.161. hint_must_use
   162. 4.162. inplace_iteration
   163. 4.163. int_from_ascii
   164. 4.164. int_roundings
   165. 4.165. integer_atomics
   166. 4.166. internal_impls_macro
   167. 4.167. internal_output_capture
   168. 4.168. io_const_error
   169. 4.169. io_const_error_internals
   170. 4.170. io_error_inprogress
   171. 4.171. io_error_more
   172. 4.172. io_error_uncategorized
   173. 4.173. io_slice_as_bytes
   174. 4.174. ip
   175. 4.175. ip_as_octets
   176. 4.176. ip_from
   177. 4.177. is_ascii_octdigit
   178. 4.178. is_loongarch_feature_detected
   179. 4.179. is_riscv_feature_detected
   180. 4.180. isolate_most_least_significant_one
   181. 4.181. iter_advance_by
   182. 4.182. iter_array_chunks
   183. 4.183. iter_chain
   184. 4.184. iter_collect_into
   185. 4.185. iter_from_coroutine
   186. 4.186. iter_intersperse
   187. 4.187. iter_is_partitioned
   188. 4.188. iter_macro
   189. 4.189. iter_map_windows
   190. 4.190. iter_next_chunk
   191. 4.191. iter_order_by
   192. 4.192. iter_partition_in_place
   193. 4.193. iterator_try_collect
   194. 4.194. iterator_try_reduce
   195. 4.195. junction_point
   196. 4.196. layout_for_ptr
   197. 4.197. lazy_cell_into_inner
   198. 4.198. lazy_get
   199. 4.199. legacy_receiver_trait
   200. 4.200. liballoc_internals
   201. 4.201. libstd_sys_internals
   202. 4.202. likely_unlikely
   203. 4.203. linked_list_cursors
   204. 4.204. linked_list_remove
   205. 4.205. linked_list_retain
   206. 4.206. linux_pidfd
   207. 4.207. local_waker
   208. 4.208. lock_value_accessors
   209. 4.209. log_syntax
   210. 4.210. map_try_insert
   211. 4.211. mapped_lock_guards
   212. 4.212. maybe_uninit_array_assume_init
   213. 4.213. maybe_uninit_as_bytes
   214. 4.214. maybe_uninit_fill
   215. 4.215. maybe_uninit_slice
   216. 4.216. maybe_uninit_uninit_array_transpose
   217. 4.217. maybe_uninit_write_slice
   218. 4.218. mem_copy_fn
   219. 4.219. mixed_integer_ops_unsigned_sub
   220. 4.220. more_float_constants
   221. 4.221. mpmc_channel
   222. 4.222. mutex_data_ptr
   223. 4.223. new_range_api
   224. 4.224. new_zeroed_alloc
   225. 4.225. next_index
   226. 4.226. nonzero_bitwise
   227. 4.227. nonzero_from_mut
   228. 4.228. nonzero_internals
   229. 4.229. nonzero_ops
   230. 4.230. normalize_lexically
   231. 4.231. numfmt
   232. 4.232. once_cell_get_mut
   233. 4.233. once_cell_try
   234. 4.234. once_cell_try_insert
   235. 4.235. one_sided_range
   236. 4.236. option_array_transpose
   237. 4.237. option_zip
   238. 4.238. os_str_slice
   239. 4.239. os_string_truncate
   240. 4.240. panic_abort
   241. 4.241. panic_always_abort
   242. 4.242. panic_backtrace_config
   243. 4.243. panic_can_unwind
   244. 4.244. panic_internals
   245. 4.245. panic_payload_as_str
   246. 4.246. panic_unwind
   247. 4.247. panic_update_hook
   248. 4.248. partial_ord_chaining_methods
   249. 4.249. path_add_extension
   250. 4.250. path_file_prefix
   251. 4.251. pattern
   252. 4.252. pattern_type_macro
   253. 4.253. pattern_type_range_trait
   254. 4.254. peer_credentials_unix_socket
   255. 4.255. phantom_variance_markers
   256. 4.256. pin_coerce_unsized_trait
   257. 4.257. pointer_is_aligned_to
   258. 4.258. pointer_like_trait
   259. 4.259. pointer_try_cast_aligned
   260. 4.260. portable_simd
   261. 4.261. prelude_future
   262. 4.262. prelude_next
   263. 4.263. print_internals
   264. 4.264. proc_macro_def_site
   265. 4.265. proc_macro_diagnostic
   266. 4.266. proc_macro_expand
   267. 4.267. proc_macro_internals
   268. 4.268. proc_macro_quote
   269. 4.269. proc_macro_span
   270. 4.270. proc_macro_totokens
   271. 4.271. proc_macro_tracked_env
   272. 4.272. proc_macro_value
   273. 4.273. process_chroot
   274. 4.274. process_exitcode_internals
   275. 4.275. process_internals
   276. 4.276. profiler_runtime_lib
   277. 4.277. ptr_alignment_type
   278. 4.278. ptr_as_ref_unchecked
   279. 4.279. ptr_as_uninit
   280. 4.280. ptr_internals
   281. 4.281. ptr_mask
   282. 4.282. ptr_metadata
   283. 4.283. pub_crate_should_not_need_unstable_attr
   284. 4.284. random
   285. 4.285. range_bounds_is_empty
   286. 4.286. range_into_bounds
   287. 4.287. raw_os_error_ty
   288. 4.288. raw_slice_split
   289. 4.289. raw_vec_internals
   290. 4.290. read_buf
   291. 4.291. reentrant_lock
   292. 4.292. reentrant_lock_data_ptr
   293. 4.293. restricted_std
   294. 4.294. result_option_map_or_default
   295. 4.295. round_char_boundary
   296. 4.296. rt
   297. 4.297. rwlock_data_ptr
   298. 4.298. rwlock_downgrade
   299. 4.299. sealed
   300. 4.300. seek_io_take_position
   301. 4.301. seek_stream_len
   302. 4.302. set_ptr_value
   303. 4.303. setgroups
   304. 4.304. sgx_platform
   305. 4.305. sized_type_properties
   306. 4.306. slice_as_array
   307. 4.307. slice_concat_ext
   308. 4.308. slice_concat_trait
   309. 4.309. slice_from_ptr_range
   310. 4.310. slice_index_methods
   311. 4.311. slice_internals
   312. 4.312. slice_iter_mut_as_mut_slice
   313. 4.313. slice_partition_dedup
   314. 4.314. slice_pattern
   315. 4.315. slice_ptr_get
   316. 4.316. slice_range
   317. 4.317. slice_split_once
   318. 4.318. slice_swap_unchecked
   319. 4.319. solid_ext
   320. 4.320. sort_floats
   321. 4.321. split_array
   322. 4.322. split_as_slice
   323. 4.323. std_internals
   324. 4.324. stdarch_arm_feature_detection
   325. 4.325. stdarch_mips_feature_detection
   326. 4.326. stdarch_powerpc_feature_detection
   327. 4.327. stdarch_s390x_feature_detection
   328. 4.328. stdio_makes_pipe
   329. 4.329. step_trait
   330. 4.330. str_as_str
   331. 4.331. str_from_raw_parts
   332. 4.332. str_from_utf16_endian
   333. 4.333. str_internals
   334. 4.334. str_lines_remainder
   335. 4.335. str_split_inclusive_remainder
   336. 4.336. str_split_remainder
   337. 4.337. str_split_whitespace_remainder
   338. 4.338. strict_overflow_ops
   339. 4.339. strict_provenance_atomic_ptr
   340. 4.340. string_from_utf8_lossy_owned
   341. 4.341. string_into_chars
   342. 4.342. string_remove_matches
   343. 4.343. substr_range
   344. 4.344. sync_poison_mod
   345. 4.345. sync_unsafe_cell
   346. 4.346. tcp_deferaccept
   347. 4.347. tcp_linger
   348. 4.348. tcplistener_into_incoming
   349. 4.349. temporary_niche_types
   350. 4.350. test
   351. 4.351. thin_box
   352. 4.352. thread_id_value
   353. 4.353. thread_local_internals
   354. 4.354. thread_raw
   355. 4.355. thread_sleep_until
   356. 4.356. thread_spawn_hook
   357. 4.357. trace_macros
   358. 4.358. track_path
   359. 4.359. transmutability
   360. 4.360. trim_prefix_suffix
   361. 4.361. trusted_fused
   362. 4.362. trusted_len
   363. 4.363. trusted_len_next_unchecked
   364. 4.364. trusted_random_access
   365. 4.365. trusted_step
   366. 4.366. try_find
   367. 4.367. try_reserve_kind
   368. 4.368. try_trait_v2
   369. 4.369. try_trait_v2_residual
   370. 4.370. try_trait_v2_yeet
   371. 4.371. try_with_capacity
   372. 4.372. tuple_trait
   373. 4.373. type_ascription
   374. 4.374. ub_checks
   375. 4.375. uefi_std
   376. 4.376. uint_bit_width
   377. 4.377. unchecked_neg
   378. 4.378. unchecked_shifts
   379. 4.379. unicode_internals
   380. 4.380. unique_rc_arc
   381. 4.381. unix_file_vectored_at
   382. 4.382. unix_mkfifo
   383. 4.383. unix_send_signal
   384. 4.384. unix_set_mark
   385. 4.385. unix_socket_ancillary_data
   386. 4.386. unix_socket_peek
   387. 4.387. unsafe_cell_access
   388. 4.388. unsafe_pinned
   389. 4.389. unsigned_nonzero_div_ceil
   390. 4.390. unsigned_signed_diff
   391. 4.391. unsize
   392. 4.392. unwrap_infallible
   393. 4.393. update_panic_count
   394. 4.394. utf16_extra
   395. 4.395. variant_count
   396. 4.396. vec_deque_iter_as_slices
   397. 4.397. vec_deque_pop_if
   398. 4.398. vec_deque_truncate_front
   399. 4.399. vec_into_raw_parts
   400. 4.400. vec_peek_mut
   401. 4.401. vec_push_within_capacity
   402. 4.402. vec_split_at_spare
   403. 4.403. wasi_ext
   404. 4.404. windows_by_handle
   405. 4.405. windows_c
   406. 4.406. windows_change_time
   407. 4.407. windows_handle
   408. 4.408. windows_net
   409. 4.409. windows_process_exit_code_from
   410. 4.410. windows_process_extensions_async_pipes
   411. 4.411. windows_process_extensions_force_quotes
   412. 4.412. windows_process_extensions_main_thread_handle
   413. 4.413. windows_process_extensions_raw_attribute
   414. 4.414. windows_process_extensions_show_window
   415. 4.415. windows_process_extensions_startupinfo
   416. 4.416. windows_stdio
   417. 4.417. wrapping_int_impl
   418. 4.418. wrapping_next_power_of_two
   419. 4.419. write_all_vectored
   420. 4.420. yeet_desugar_details