1. The Unstable Book
2. 1. Compiler environment variables
   1. 1.1. COLORTERM
   2. 1.2. QNX_TARGET
   3. 1.3. RUSTC_BLESS
   4. 1.4. RUSTC_BOOTSTRAP
   5. 1.5. RUSTC_BREAK_ON_ICE
   6. 1.6. RUSTC_CTFE_BACKTRACE
   7. 1.7. RUSTC_FORCE_RUSTC_VERSION
   8. 1.8. RUSTC_GRAPHVIZ_FONT
   9. 1.9. RUSTC_ICE
   10. 1.10. RUSTC_LOG
   11. 1.11. RUSTC_OVERRIDE_VERSION_STRING
   12. 1.12. RUSTC_WINDOWS_RC
   13. 1.13. RUST_BACKTRACE
   14. 1.14. RUST_DEP_GRAPH
   15. 1.15. RUST_DEP_GRAPH_FILTER
   16. 1.16. RUST_FORBID_DEP_GRAPH_EDGE
   17. 1.17. RUST_MIN_STACK
   18. 1.18. RUST_TARGET_PATH
   19. 1.19. SDKROOT
   20. 1.20. TERM
   21. 1.21. UNSTABLE_RUSTDOC_TEST_LINE
   22. 1.22. UNSTABLE_RUSTDOC_TEST_PATH
3. 2. Compiler flags
   1. 2.1. allow_features
   2. 2.2. annotate_moves
   3. 2.3. autodiff
   4. 2.4. branch_protection
   5. 2.5. cache_proc_macros
   6. 2.6. cf_protection
   7. 2.7. codegen_backend
   8. 2.8. codegen_options
   9. 2.9. codegen_source_order
   10. 2.10. control_flow_guard
   11. 2.11. coverage_options
   12. 2.12. crate_attr
   13. 2.13. debug_info_for_profiling
   14. 2.14. debug_info_type_line_numbers
   15. 2.15. default_visibility
   16. 2.16. direct_access_external_data
   17. 2.17. dump_mono_stats
   18. 2.18. dump_mono_stats_format
   19. 2.19. dylib_lto
   20. 2.20. eagerly_emit_delayed_bugs
   21. 2.21. embed_metadata
   22. 2.22. embed_source
   23. 2.23. emit_stack_sizes
   24. 2.24. emscripten_wasm_eh
   25. 2.25. env_set
   26. 2.26. export_executable_symbols
   27. 2.27. extern_options
   28. 2.28. external_clangrt
   29. 2.29. fixed_x18
   30. 2.30. fmt_debug
   31. 2.31. function_return
   32. 2.32. hint_mostly_unused
   33. 2.33. indirect_branch_cs_prefix
   34. 2.34. instrument_xray
   35. 2.35. large_data_threshold
   36. 2.36. link_native_libraries
   37. 2.37. lint_llvm_ir
   38. 2.38. llvm_module_flag
   39. 2.39. location_detail
   40. 2.40. macro_stats
   41. 2.41. min_function_alignment
   42. 2.42. min_recursive_limit
   43. 2.43. move_size_limit
   44. 2.44. no_parallel_llvm
   45. 2.45. no_steal_thir
   46. 2.46. no_unique_section_names
   47. 2.47. offload
   48. 2.48. on_broken_pipe
   49. 2.49. patchable_function_entry
   50. 2.50. print_check_cfg
   51. 2.51. print_crate_root_lint_levels
   52. 2.52. print_supported_crate_types
   53. 2.53. profile_sample_use
   54. 2.54. randomize_layout
   55. 2.55. reg_struct_return
   56. 2.56. regparm
   57. 2.57. remap_cwd_prefix
   58. 2.58. report_time
   59. 2.59. sanitizer
   60. 2.60. self_profile
   61. 2.61. self_profile_events
   62. 2.62. shell_argfiles
   63. 2.63. small_data_threshold
   64. 2.64. split_dwarf_out_dir
   65. 2.65. src_hash_algorithm
   66. 2.66. temps_dir
   67. 2.67. terminal_urls
   68. 2.68. tiny_const_eval_limit
   69. 2.69. tls_model
   70. 2.70. track_diagnostics
   71. 2.71. treat_err_as_bug
   72. 2.72. ub_checks
   73. 2.73. unsound_mir_opts
   74. 2.74. verbose_asm
   75. 2.75. virtual_function_elimination
   76. 2.76. wasm_c_abi
4. 3. Language features
   1. 3.1. aarch64_unstable_target_feature
   2. 3.2. aarch64_ver_target_feature
   3. 3.3. abi_avr_interrupt
   4. 3.4. abi_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_experimental_arch
   24. 3.24. asm_experimental_reg
   25. 3.25. asm_goto_with_outputs
   26. 3.26. asm_unwind
   27. 3.27. associated_type_defaults
   28. 3.28. async_drop
   29. 3.29. async_fn_in_dyn_trait
   30. 3.30. async_fn_track_caller
   31. 3.31. async_for_loop
   32. 3.32. async_trait_bounds
   33. 3.33. auto_traits
   34. 3.34. avr_target_feature
   35. 3.35. avx10_target_feature
   36. 3.36. box_patterns
   37. 3.37. bpf_target_feature
   38. 3.38. builtin_syntax
   39. 3.39. c_variadic
   40. 3.40. c_variadic_naked_functions
   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_block_items
   61. 3.61. const_c_variadic
   62. 3.62. const_closures
   63. 3.63. const_destruct
   64. 3.64. const_for
   65. 3.65. const_precise_live_drops
   66. 3.66. const_trait_impl
   67. 3.67. const_try
   68. 3.68. contracts
   69. 3.69. contracts_internals
   70. 3.70. coroutine_clone
   71. 3.71. coroutines
   72. 3.72. coverage_attribute
   73. 3.73. csky_target_feature
   74. 3.74. custom_inner_attributes
   75. 3.75. custom_mir
   76. 3.76. custom_test_frameworks
   77. 3.77. decl_macro
   78. 3.78. default_field_values
   79. 3.79. deprecated_suggestion
   80. 3.80. deref_patterns
   81. 3.81. derive_from
   82. 3.82. diagnostic_on_const
   83. 3.83. diagnostic_on_move
   84. 3.84. doc_cfg
   85. 3.85. doc_masked
   86. 3.86. doc_notable_trait
   87. 3.87. dropck_eyepatch
   88. 3.88. effective_target_features
   89. 3.89. eii_internals
   90. 3.90. ergonomic_clones
   91. 3.91. ermsb_target_feature
   92. 3.92. exhaustive_patterns
   93. 3.93. explicit_extern_abis
   94. 3.94. explicit_tail_calls
   95. 3.95. export_stable
   96. 3.96. extern_item_impls
   97. 3.97. extern_types
   98. 3.98. f128
   99. 3.99. f16
   100. 3.100. ffi_const
   101. 3.101. ffi_pure
   102. 3.102. field_projections
   103. 3.103. field_representing_type_raw
   104. 3.104. final_associated_functions
   105. 3.105. fmt_debug
   106. 3.106. fn_align
   107. 3.107. fn_delegation
   108. 3.108. freeze_impls
   109. 3.109. frontmatter
   110. 3.110. fundamental
   111. 3.111. gen_blocks
   112. 3.112. generic_assert
   113. 3.113. generic_const_exprs
   114. 3.114. generic_const_items
   115. 3.115. generic_const_parameter_types
   116. 3.116. generic_pattern_types
   117. 3.117. global_registration
   118. 3.118. guard_patterns
   119. 3.119. half_open_range_patterns_in_slices
   120. 3.120. hexagon_target_feature
   121. 3.121. impl_restriction
   122. 3.122. impl_trait_in_assoc_type
   123. 3.123. impl_trait_in_bindings
   124. 3.124. impl_trait_in_fn_trait_return
   125. 3.125. import_trait_associated_functions
   126. 3.126. inherent_associated_types
   127. 3.127. intra_doc_pointers
   128. 3.128. intrinsics
   129. 3.129. lahfsahf_target_feature
   130. 3.130. lang_items
   131. 3.131. large_assignments
   132. 3.132. lazy_type_alias
   133. 3.133. link_arg_attribute
   134. 3.134. link_cfg
   135. 3.135. link_llvm_intrinsics
   136. 3.136. linkage
   137. 3.137. loongarch_target_feature
   138. 3.138. loop_match
   139. 3.139. m68k_target_feature
   140. 3.140. macro_attr
   141. 3.141. macro_derive
   142. 3.142. macro_metavar_expr
   143. 3.143. macro_metavar_expr_concat
   144. 3.144. marker_trait_attr
   145. 3.145. mgca_type_const_syntax
   146. 3.146. min_generic_const_args
   147. 3.147. min_specialization
   148. 3.148. mips_target_feature
   149. 3.149. more_maybe_bounds
   150. 3.150. more_qualified_paths
   151. 3.151. movrs_target_feature
   152. 3.152. multiple_supertrait_upcastable
   153. 3.153. must_not_suspend
   154. 3.154. mut_ref
   155. 3.155. naked_functions_rustic_abi
   156. 3.156. naked_functions_target_feature
   157. 3.157. native_link_modifiers_as_needed
   158. 3.158. needs_panic_runtime
   159. 3.159. negative_bounds
   160. 3.160. negative_impls
   161. 3.161. never_patterns
   162. 3.162. never_type
   163. 3.163. new_range
   164. 3.164. no_core
   165. 3.165. non_exhaustive_omitted_patterns_lint
   166. 3.166. non_lifetime_binders
   167. 3.167. nvptx_target_feature
   168. 3.168. offset_of_enum
   169. 3.169. offset_of_slice
   170. 3.170. opaque_generic_const_args
   171. 3.171. optimize_attribute
   172. 3.172. panic_runtime
   173. 3.173. patchable_function_entry
   174. 3.174. pattern_complexity_limit
   175. 3.175. pattern_types
   176. 3.176. pin_ergonomics
   177. 3.177. postfix_match
   178. 3.178. powerpc_target_feature
   179. 3.179. prelude_import
   180. 3.180. prfchw_target_feature
   181. 3.181. proc_macro_hygiene
   182. 3.182. profiler_runtime
   183. 3.183. raw_dylib_elf
   184. 3.184. reborrow
   185. 3.185. ref_pat_eat_one_layer_2024
   186. 3.186. ref_pat_eat_one_layer_2024_structural
   187. 3.187. register_tool
   188. 3.188. repr_simd
   189. 3.189. return_type_notation
   190. 3.190. riscv_target_feature
   191. 3.191. rtm_target_feature
   192. 3.192. rust_cold_cc
   193. 3.193. rust_preserve_none_cc
   194. 3.194. rustc_attrs
   195. 3.195. rustc_private
   196. 3.196. rustdoc_internals
   197. 3.197. rustdoc_missing_doc_code_examples
   198. 3.198. s390x_target_feature
   199. 3.199. sanitize
   200. 3.200. simd_ffi
   201. 3.201. sized_hierarchy
   202. 3.202. sparc_target_feature
   203. 3.203. specialization
   204. 3.204. staged_api
   205. 3.205. static_align
   206. 3.206. stmt_expr_attributes
   207. 3.207. strict_provenance_lints
   208. 3.208. structural_match
   209. 3.209. super_let
   210. 3.210. supertrait_item_shadowing
   211. 3.211. target_feature_inline_always
   212. 3.212. test_incomplete_feature
   213. 3.213. test_unstable_lint
   214. 3.214. thread_local
   215. 3.215. trait_alias
   216. 3.216. transmute_generic_consts
   217. 3.217. transparent_unions
   218. 3.218. trivial_bounds
   219. 3.219. try_blocks
   220. 3.220. try_blocks_heterogeneous
   221. 3.221. type_alias_impl_trait
   222. 3.222. type_changing_struct_update
   223. 3.223. unboxed_closures
   224. 3.224. unqualified_local_imports
   225. 3.225. unsafe_binders
   226. 3.226. unsafe_fields
   227. 3.227. unsized_const_params
   228. 3.228. unsized_fn_params
   229. 3.229. used_with_arg
   230. 3.230. wasm_target_feature
   231. 3.231. where_clause_attrs
   232. 3.232. with_negative_coherence
   233. 3.233. x86_amx_intrinsics
   234. 3.234. x87_target_feature
   235. 3.235. xop_target_feature
   236. 3.236. yeet_expr
   237. 3.237. yield_expr
5. 4. Library Features
   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_slice_into_array
   8. 4.8. allocator_api
   9. 4.9. alloctests
   10. 4.10. arc_is_unique
   11. 4.11. array_into_iter_constructors
   12. 4.12. array_ptr_get
   13. 4.13. array_try_from_fn
   14. 4.14. array_try_map
   15. 4.15. ascii_char
   16. 4.16. ascii_char_variants
   17. 4.17. async_fn_traits
   18. 4.18. async_gen_internals
   19. 4.19. async_iter_from_iter
   20. 4.20. async_iterator
   21. 4.21. atomic_from_mut
   22. 4.22. atomic_internals
   23. 4.23. atomic_ptr_null
   24. 4.24. autodiff
   25. 4.25. backtrace_frames
   26. 4.26. bikeshed_guaranteed_no_drop
   27. 4.27. binary_heap_drain_sorted
   28. 4.28. binary_heap_from_raw_vec
   29. 4.29. binary_heap_into_iter_sorted
   30. 4.30. binary_heap_peek_mut_refresh
   31. 4.31. binary_heap_pop_if
   32. 4.32. bool_to_result
   33. 4.33. bound_as_ref
   34. 4.34. bound_copied
   35. 4.35. box_as_ptr
   36. 4.36. box_into_boxed_slice
   37. 4.37. box_into_inner
   38. 4.38. box_take
   39. 4.39. box_vec_non_null
   40. 4.40. breakpoint
   41. 4.41. bstr
   42. 4.42. bstr_internals
   43. 4.43. btree_cursors
   44. 4.44. btree_merge
   45. 4.45. btree_set_entry
   46. 4.46. btreemap_alloc
   47. 4.47. buf_read_has_data_left
   48. 4.48. bufreader_peek
   49. 4.49. c_size_t
   50. 4.50. c_void_variant
   51. 4.51. can_vector
   52. 4.52. cast_maybe_uninit
   53. 4.53. cell_get_cloned
   54. 4.54. cell_leak
   55. 4.55. cfg_accessible
   56. 4.56. cfg_eval
   57. 4.57. char_internals
   58. 4.58. char_max_len
   59. 4.59. clamp_magnitude
   60. 4.60. clone_from_ref
   61. 4.61. clone_to_uninit
   62. 4.62. cmp_minmax
   63. 4.63. coerce_pointee_validated
   64. 4.64. coerce_unsized
   65. 4.65. command_resolved_envs
   66. 4.66. concat_bytes
   67. 4.67. const_alloc_error
   68. 4.68. const_array
   69. 4.69. const_bool
   70. 4.70. const_btree_len
   71. 4.71. const_carrying_mul_add
   72. 4.72. const_cell_traits
   73. 4.73. const_clone
   74. 4.74. const_cmp
   75. 4.75. const_control_flow
   76. 4.76. const_convert
   77. 4.77. const_default
   78. 4.78. const_drop_guard
   79. 4.79. const_drop_in_place
   80. 4.80. const_eval_select
   81. 4.81. const_format_args
   82. 4.82. const_heap
   83. 4.83. const_index
   84. 4.84. const_iter
   85. 4.85. const_manually_drop_take
   86. 4.86. const_never_short_circuit
   87. 4.87. const_ops
   88. 4.88. const_option_ops
   89. 4.89. const_param_ty_trait
   90. 4.90. const_path_separators
   91. 4.91. const_range
   92. 4.92. const_range_bounds
   93. 4.93. const_raw_ptr_comparison
   94. 4.94. const_ref_cell
   95. 4.95. const_result_trait_fn
   96. 4.96. const_result_unwrap_unchecked
   97. 4.97. const_select_unpredictable
   98. 4.98. const_slice_from_mut_ptr_range
   99. 4.99. const_slice_from_ptr_range
   100. 4.100. const_slice_make_iter
   101. 4.101. const_split_off_first_last
   102. 4.102. const_swap_with_slice
   103. 4.103. const_try_residual
   104. 4.104. const_type_name
   105. 4.105. const_unsigned_bigint_helpers
   106. 4.106. container_error_extra
   107. 4.107. context_ext
   108. 4.108. control_flow_into_value
   109. 4.109. convert_float_to_int
   110. 4.110. copied_into_inner
   111. 4.111. core_float_math
   112. 4.112. core_intrinsics
   113. 4.113. core_intrinsics_fallbacks
   114. 4.114. core_io_borrowed_buf
   115. 4.115. core_private_bignum
   116. 4.116. core_private_diy_float
   117. 4.117. coroutine_trait
   118. 4.118. cow_is_borrowed
   119. 4.119. cstr_bytes
   120. 4.120. cstr_display
   121. 4.121. cstr_internals
   122. 4.122. current_thread_id
   123. 4.123. cursor_split
   124. 4.124. darwin_objc
   125. 4.125. deadline_api
   126. 4.126. debug_closure_helpers
   127. 4.127. dec2flt
   128. 4.128. deque_extend_front
   129. 4.129. deref_pure_trait
   130. 4.130. derive_clone_copy_internals
   131. 4.131. derive_coerce_pointee
   132. 4.132. derive_const
   133. 4.133. derive_eq_internals
   134. 4.134. dir_entry_ext2
   135. 4.135. dirfd
   136. 4.136. dirhandle
   137. 4.137. discriminant_kind
   138. 4.138. disjoint_bitor
   139. 4.139. dispatch_from_dyn
   140. 4.140. downcast_unchecked
   141. 4.141. drain_keep_rest
   142. 4.142. drop_guard
   143. 4.143. duration_constants
   144. 4.144. duration_constructors
   145. 4.145. duration_integer_division
   146. 4.146. duration_millis_float
   147. 4.147. duration_units
   148. 4.148. edition_panic
   149. 4.149. error_generic_member_access
   150. 4.150. error_iter
   151. 4.151. error_reporter
   152. 4.152. error_type_id
   153. 4.153. exact_bitshifts
   154. 4.154. exact_div
   155. 4.155. exact_size_is_empty
   156. 4.156. exclusive_wrapper
   157. 4.157. exit_status_error
   158. 4.158. exitcode_exit_method
   159. 4.159. extend_one
   160. 4.160. extend_one_unchecked
   161. 4.161. fd
   162. 4.162. file_buffered
   163. 4.163. float_algebraic
   164. 4.164. float_bits_const
   165. 4.165. float_erf
   166. 4.166. float_exact_integer_constants
   167. 4.167. float_gamma
   168. 4.168. float_minimum_maximum
   169. 4.169. flt2dec
   170. 4.170. fmt_arguments_from_str
   171. 4.171. fmt_helpers_for_derive
   172. 4.172. fmt_internals
   173. 4.173. fn_ptr_trait
   174. 4.174. fn_traits
   175. 4.175. forget_unsized
   176. 4.176. format_args_nl
   177. 4.177. formatting_options
   178. 4.178. freeze
   179. 4.179. fs_set_times
   180. 4.180. funnel_shifts
   181. 4.181. future_join
   182. 4.182. gen_future
   183. 4.183. generic_assert_internals
   184. 4.184. generic_atomic
   185. 4.185. get_disjoint_mut_helpers
   186. 4.186. get_mut_unchecked
   187. 4.187. gethostname
   188. 4.188. gpu_intrinsics
   189. 4.189. hash_set_entry
   190. 4.190. hasher_prefixfree_extras
   191. 4.191. hashmap_internals
   192. 4.192. hint_must_use
   193. 4.193. hint_prefetch
   194. 4.194. inplace_iteration
   195. 4.195. int_format_into
   196. 4.196. int_from_ascii
   197. 4.197. int_lowest_highest_one
   198. 4.198. int_roundings
   199. 4.199. integer_atomics
   200. 4.200. internal_output_capture
   201. 4.201. io_const_error
   202. 4.202. io_const_error_internals
   203. 4.203. io_error_inprogress
   204. 4.204. io_error_more
   205. 4.205. io_error_uncategorized
   206. 4.206. io_slice_as_bytes
   207. 4.207. ip
   208. 4.208. ip_as_octets
   209. 4.209. is_ascii_octdigit
   210. 4.210. is_loongarch_feature_detected
   211. 4.211. is_riscv_feature_detected
   212. 4.212. isolate_most_least_significant_one
   213. 4.213. iter_advance_by
   214. 4.214. iter_array_chunks
   215. 4.215. iter_collect_into
   216. 4.216. iter_from_coroutine
   217. 4.217. iter_intersperse
   218. 4.218. iter_is_partitioned
   219. 4.219. iter_macro
   220. 4.220. iter_map_windows
   221. 4.221. iter_next_chunk
   222. 4.222. iter_order_by
   223. 4.223. iter_partition_in_place
   224. 4.224. iterator_try_collect
   225. 4.225. iterator_try_reduce
   226. 4.226. junction_point
   227. 4.227. layout_for_ptr
   228. 4.228. lazy_cell_into_inner
   229. 4.229. legacy_receiver_trait
   230. 4.230. liballoc_internals
   231. 4.231. libstd_sys_internals
   232. 4.232. likely_unlikely
   233. 4.233. linked_list_cursors
   234. 4.234. linked_list_remove
   235. 4.235. linked_list_retain
   236. 4.236. linux_pidfd
   237. 4.237. local_key_cell_update
   238. 4.238. local_waker
   239. 4.239. lock_value_accessors
   240. 4.240. log_syntax
   241. 4.241. map_try_insert
   242. 4.242. mapped_lock_guards
   243. 4.243. maybe_dangling
   244. 4.244. maybe_uninit_array_assume_init
   245. 4.245. maybe_uninit_as_bytes
   246. 4.246. maybe_uninit_fill
   247. 4.247. maybe_uninit_uninit_array_transpose
   248. 4.248. mem_conjure_zst
   249. 4.249. mem_copy_fn
   250. 4.250. more_float_constants
   251. 4.251. motor_ext
   252. 4.252. mpmc_channel
   253. 4.253. mpsc_is_disconnected
   254. 4.254. mutex_data_ptr
   255. 4.255. new_range_api
   256. 4.256. next_index
   257. 4.257. nonpoison_condvar
   258. 4.258. nonpoison_mutex
   259. 4.259. nonpoison_rwlock
   260. 4.260. nonzero_bitwise
   261. 4.261. nonzero_from_mut
   262. 4.262. nonzero_from_str_radix
   263. 4.263. nonzero_internals
   264. 4.264. nonzero_ops
   265. 4.265. normalize_lexically
   266. 4.266. num_internals
   267. 4.267. numfmt
   268. 4.268. objc_class_variant
   269. 4.269. objc_selector_variant
   270. 4.270. once_cell_get_mut
   271. 4.271. once_cell_try
   272. 4.272. once_cell_try_insert
   273. 4.273. one_sided_range
   274. 4.274. oneshot_channel
   275. 4.275. option_array_transpose
   276. 4.276. option_get_or_try_insert_with
   277. 4.277. option_into_flat_iter
   278. 4.278. option_reduce
   279. 4.279. option_reference_flattening
   280. 4.280. option_zip
   281. 4.281. os_str_slice
   282. 4.282. os_string_truncate
   283. 4.283. panic_abort
   284. 4.284. panic_always_abort
   285. 4.285. panic_backtrace_config
   286. 4.286. panic_can_unwind
   287. 4.287. panic_internals
   288. 4.288. panic_unwind
   289. 4.289. panic_update_hook
   290. 4.290. partial_ord_chaining_methods
   291. 4.291. path_absolute_method
   292. 4.292. path_is_empty
   293. 4.293. path_trailing_sep
   294. 4.294. pattern
   295. 4.295. pattern_type_macro
   296. 4.296. pattern_type_range_trait
   297. 4.297. peer_credentials_unix_socket
   298. 4.298. phantom_variance_markers
   299. 4.299. pin_coerce_unsized_trait
   300. 4.300. pin_derefmut_internals
   301. 4.301. pointer_is_aligned_to
   302. 4.302. pointer_try_cast_aligned
   303. 4.303. portable_simd
   304. 4.304. prelude_future
   305. 4.305. prelude_next
   306. 4.306. print_internals
   307. 4.307. proc_macro_def_site
   308. 4.308. proc_macro_diagnostic
   309. 4.309. proc_macro_expand
   310. 4.310. proc_macro_internals
   311. 4.311. proc_macro_quote
   312. 4.312. proc_macro_span
   313. 4.313. proc_macro_totokens
   314. 4.314. proc_macro_tracked_env
   315. 4.315. proc_macro_tracked_path
   316. 4.316. proc_macro_value
   317. 4.317. process_chroot
   318. 4.318. process_exitcode_internals
   319. 4.319. process_internals
   320. 4.320. process_setsid
   321. 4.321. profiler_runtime_lib
   322. 4.322. profiling_marker_api
   323. 4.323. ptr_alignment_type
   324. 4.324. ptr_as_uninit
   325. 4.325. ptr_cast_array
   326. 4.326. ptr_cast_slice
   327. 4.327. ptr_internals
   328. 4.328. ptr_mask
   329. 4.329. ptr_metadata
   330. 4.330. pub_crate_should_not_need_unstable_attr
   331. 4.331. random
   332. 4.332. range_bounds_is_empty
   333. 4.333. range_into_bounds
   334. 4.334. raw_os_error_ty
   335. 4.335. raw_slice_split
   336. 4.336. raw_vec_internals
   337. 4.337. read_array
   338. 4.338. read_buf
   339. 4.339. read_buf_at
   340. 4.340. reentrant_lock
   341. 4.341. reentrant_lock_data_ptr
   342. 4.342. refcell_try_map
   343. 4.343. restricted_std
   344. 4.344. result_option_map_or_default
   345. 4.345. rev_into_inner
   346. 4.346. rt
   347. 4.347. rwlock_data_ptr
   348. 4.348. sealed
   349. 4.349. seek_io_take_position
   350. 4.350. seek_stream_len
   351. 4.351. set_permissions_nofollow
   352. 4.352. set_ptr_value
   353. 4.353. setgroups
   354. 4.354. sgx_platform
   355. 4.355. signed_bigint_helpers
   356. 4.356. sized_type_properties
   357. 4.357. slice_concat_ext
   358. 4.358. slice_concat_trait
   359. 4.359. slice_from_ptr_range
   360. 4.360. slice_index_methods
   361. 4.361. slice_internals
   362. 4.362. slice_iter_mut_as_mut_slice
   363. 4.363. slice_partial_sort_unstable
   364. 4.364. slice_partition_dedup
   365. 4.365. slice_pattern
   366. 4.366. slice_ptr_get
   367. 4.367. slice_range
   368. 4.368. slice_shift
   369. 4.369. slice_split_once
   370. 4.370. slice_swap_unchecked
   371. 4.371. sliceindex_wrappers
   372. 4.372. smart_pointer_try_map
   373. 4.373. solid_ext
   374. 4.374. sort_floats
   375. 4.375. split_array
   376. 4.376. split_as_slice
   377. 4.377. std_internals
   378. 4.378. stdarch_aarch64_feature_detection
   379. 4.379. stdarch_arm_feature_detection
   380. 4.380. stdarch_internal
   381. 4.381. stdarch_loongarch_feature_detection
   382. 4.382. stdarch_mips_feature_detection
   383. 4.383. stdarch_powerpc_feature_detection
   384. 4.384. stdarch_riscv_feature_detection
   385. 4.385. stdio_fd_consts
   386. 4.386. stdio_makes_pipe
   387. 4.387. stdio_swap
   388. 4.388. step_trait
   389. 4.389. str_as_str
   390. 4.390. str_from_raw_parts
   391. 4.391. str_from_utf16_endian
   392. 4.392. str_internals
   393. 4.393. str_lines_remainder
   394. 4.394. str_split_inclusive_remainder
   395. 4.395. str_split_remainder
   396. 4.396. str_split_whitespace_remainder
   397. 4.397. string_from_utf8_lossy_owned
   398. 4.398. string_into_chars
   399. 4.399. string_remove_matches
   400. 4.400. string_replace_in_place
   401. 4.401. strip_circumfix
   402. 4.402. substr_range
   403. 4.403. sync_nonpoison
   404. 4.404. sync_poison_mod
   405. 4.405. sync_unsafe_cell
   406. 4.406. tcp_deferaccept
   407. 4.407. tcp_linger
   408. 4.408. tcplistener_into_incoming
   409. 4.409. temporary_niche_types
   410. 4.410. test
   411. 4.411. thin_box
   412. 4.412. thread_id_value
   413. 4.413. thread_local_internals
   414. 4.414. thread_raw
   415. 4.415. thread_sleep_until
   416. 4.416. thread_spawn_hook
   417. 4.417. time_saturating_systemtime
   418. 4.418. time_systemtime_limits
   419. 4.419. trace_macros
   420. 4.420. transmutability
   421. 4.421. trim_prefix_suffix
   422. 4.422. trivial_clone
   423. 4.423. trusted_fused
   424. 4.424. trusted_len
   425. 4.425. trusted_len_next_unchecked
   426. 4.426. trusted_random_access
   427. 4.427. trusted_step
   428. 4.428. try_as_dyn
   429. 4.429. try_find
   430. 4.430. try_reserve_kind
   431. 4.431. try_trait_v2
   432. 4.432. try_trait_v2_residual
   433. 4.433. try_trait_v2_yeet
   434. 4.434. try_with_capacity
   435. 4.435. tuple_trait
   436. 4.436. type_ascription
   437. 4.437. type_info
   438. 4.438. ub_checks
   439. 4.439. uefi_std
   440. 4.440. uint_bit_width
   441. 4.441. uint_carryless_mul
   442. 4.442. uint_gather_scatter_bits
   443. 4.443. unicode_internals
   444. 4.444. unique_rc_arc
   445. 4.445. unix_file_vectored_at
   446. 4.446. unix_mkfifo
   447. 4.447. unix_send_signal
   448. 4.448. unix_set_mark
   449. 4.449. unix_socket_ancillary_data
   450. 4.450. unix_socket_exclbind
   451. 4.451. unix_socket_peek
   452. 4.452. unsafe_cell_access
   453. 4.453. unsafe_pinned
   454. 4.454. unsafe_unpin
   455. 4.455. unsize
   456. 4.456. unwrap_infallible
   457. 4.457. update_panic_count
   458. 4.458. utf16_extra
   459. 4.459. variant_count
   460. 4.460. vec_deque_extract_if
   461. 4.461. vec_deque_iter_as_slices
   462. 4.462. vec_deque_truncate_front
   463. 4.463. vec_fallible_shrink
   464. 4.464. vec_from_fn
   465. 4.465. vec_into_chunks
   466. 4.466. vec_peek_mut
   467. 4.467. vec_push_within_capacity
   468. 4.468. vec_recycle
   469. 4.469. vec_split_at_spare
   470. 4.470. vec_try_remove
   471. 4.471. waker_fn
   472. 4.472. waker_from_fn_ptr
   473. 4.473. wasi_ext
   474. 4.474. widening_mul
   475. 4.475. windows_by_handle
   476. 4.476. windows_c
   477. 4.477. windows_change_time
   478. 4.478. windows_freeze_file_times
   479. 4.479. windows_handle
   480. 4.480. windows_net
   481. 4.481. windows_process_exit_code_from
   482. 4.482. windows_process_extensions_async_pipes
   483. 4.483. windows_process_extensions_force_quotes
   484. 4.484. windows_process_extensions_inherit_handles
   485. 4.485. windows_process_extensions_main_thread_handle
   486. 4.486. windows_process_extensions_raw_attribute
   487. 4.487. windows_process_extensions_show_window
   488. 4.488. windows_process_extensions_startupinfo
   489. 4.489. windows_stdio
   490. 4.490. windows_unix_domain_sockets
   491. 4.491. wrapping_int_impl
   492. 4.492. wrapping_next_power_of_two
   493. 4.493. write_all_vectored
   494. 4.494. wtf8_internals
   495. 4.495. yeet_desugar_details