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The Unstable Book
1.
Compiler flags
1.1.
control_flow_guard
1.2.
emit_stack_sizes
1.3.
profile
1.4.
report_time
1.5.
sanitizer
1.6.
self_profile
1.7.
self_profile_events
1.8.
src_hash_algorithm
1.9.
strip
1.10.
tls_model
2.
Language features
2.1.
aarch64_target_feature
2.2.
abi_amdgpu_kernel
2.3.
abi_efiapi
2.4.
abi_msp430_interrupt
2.5.
abi_ptx
2.6.
abi_thiscall
2.7.
abi_unadjusted
2.8.
abi_vectorcall
2.9.
abi_x86_interrupt
2.10.
adx_target_feature
2.11.
alloc_error_handler
2.12.
allocator_internals
2.13.
allow_fail
2.14.
allow_internal_unsafe
2.15.
allow_internal_unstable
2.16.
arbitrary_enum_discriminant
2.17.
arbitrary_self_types
2.18.
arm_target_feature
2.19.
associated_type_bounds
2.20.
associated_type_defaults
2.21.
async_closure
2.22.
avx512_target_feature
2.23.
bindings_after_at
2.24.
box_patterns
2.25.
box_syntax
2.26.
c_variadic
2.27.
cfg_sanitize
2.28.
cfg_target_has_atomic
2.29.
cfg_target_thread_local
2.30.
cfg_version
2.31.
cmpxchg16b_target_feature
2.32.
compiler_builtins
2.33.
const_compare_raw_pointers
2.34.
const_eval_limit
2.35.
const_extern_fn
2.36.
const_fn
2.37.
const_fn_union
2.38.
const_generics
2.39.
const_if_match
2.40.
const_in_array_repeat_expressions
2.41.
const_loop
2.42.
const_mut_refs
2.43.
const_panic
2.44.
const_raw_ptr_deref
2.45.
const_raw_ptr_to_usize_cast
2.46.
const_trait_bound_opt_out
2.47.
const_trait_impl
2.48.
crate_visibility_modifier
2.49.
custom_inner_attributes
2.50.
custom_test_frameworks
2.51.
decl_macro
2.52.
default_type_parameter_fallback
2.53.
doc_alias
2.54.
doc_cfg
2.55.
doc_keyword
2.56.
doc_masked
2.57.
dropck_eyepatch
2.58.
exclusive_range_pattern
2.59.
exhaustive_patterns
2.60.
extern_types
2.61.
external_doc
2.62.
f16c_target_feature
2.63.
ffi_const
2.64.
ffi_pure
2.65.
ffi_returns_twice
2.66.
fundamental
2.67.
generators
2.68.
generic_associated_types
2.69.
half_open_range_patterns
2.70.
hexagon_target_feature
2.71.
impl_trait_in_bindings
2.72.
in_band_lifetimes
2.73.
infer_static_outlives_requirements
2.74.
intrinsics
2.75.
label_break_value
2.76.
lang_items
2.77.
let_chains
2.78.
link_args
2.79.
link_cfg
2.80.
link_llvm_intrinsics
2.81.
linkage
2.82.
lint_reasons
2.83.
main
2.84.
marker_trait_attr
2.85.
member_constraints
2.86.
min_specialization
2.87.
mips_target_feature
2.88.
mmx_target_feature
2.89.
movbe_target_feature
2.90.
move_ref_pattern
2.91.
naked_functions
2.92.
needs_panic_runtime
2.93.
negative_impls
2.94.
never_type
2.95.
never_type_fallback
2.96.
nll
2.97.
no_core
2.98.
no_niche
2.99.
no_sanitize
2.100.
non_ascii_idents
2.101.
object_safe_for_dispatch
2.102.
omit_gdb_pretty_printer_section
2.103.
optimize_attribute
2.104.
optin_builtin_traits
2.105.
or_patterns
2.106.
panic_runtime
2.107.
platform_intrinsics
2.108.
plugin
2.109.
plugin_registrar
2.110.
powerpc_target_feature
2.111.
precise_pointer_size_matching
2.112.
prelude_import
2.113.
proc_macro_hygiene
2.114.
profiler_runtime
2.115.
raw_dylib
2.116.
raw_ref_op
2.117.
register_attr
2.118.
register_tool
2.119.
repr_simd
2.120.
repr128
2.121.
riscv_target_feature
2.122.
rtm_target_feature
2.123.
rustc_attrs
2.124.
rustc_private
2.125.
simd_ffi
2.126.
specialization
2.127.
sse4a_target_feature
2.128.
staged_api
2.129.
start
2.130.
static_nobundle
2.131.
stmt_expr_attributes
2.132.
structural_match
2.133.
target_feature_11
2.134.
tbm_target_feature
2.135.
test_2018_feature
2.136.
thread_local
2.137.
track_caller
2.138.
trait_alias
2.139.
transparent_unions
2.140.
trivial_bounds
2.141.
try_blocks
2.142.
type_alias_impl_trait
2.143.
type_ascription
2.144.
unboxed_closures
2.145.
unsafe_block_in_unsafe_fn
2.146.
unsized_locals
2.147.
unsized_tuple_coercion
2.148.
untagged_unions
2.149.
unwind_attributes
2.150.
wasm_target_feature
3.
Library Features
3.1.
alloc_error_hook
3.2.
alloc_internals
3.3.
alloc_layout_extra
3.4.
alloc_prelude
3.5.
allocator_api
3.6.
arc_mutate_strong_count
3.7.
array_error_internals
3.8.
array_value_iter
3.9.
asm
3.10.
assoc_char_consts
3.11.
assoc_char_funcs
3.12.
atomic_mut_ptr
3.13.
backtrace
3.14.
binary_heap_drain_sorted
3.15.
binary_heap_into_iter_sorted
3.16.
binary_heap_retain
3.17.
bool_to_option
3.18.
bound_cloned
3.19.
box_into_boxed_slice
3.20.
box_into_pin
3.21.
box_into_raw_non_null
3.22.
btree_drain_filter
3.23.
buffered_io_capacity
3.24.
bufreader_seek_relative
3.25.
c_void_variant
3.26.
can_vector
3.27.
cell_leak
3.28.
cell_update
3.29.
cfg_accessible
3.30.
char_error_internals
3.31.
char_internals
3.32.
clamp
3.33.
cmp_min_max_by
3.34.
coerce_unsized
3.35.
concat_idents
3.36.
const_alloc_layout
3.37.
const_ascii_ctype_on_intrinsics
3.38.
const_btree_new
3.39.
const_caller_location
3.40.
const_checked_int_methods
3.41.
const_cstr_unchecked
3.42.
const_cttz
3.43.
const_discriminant
3.44.
const_euclidean_int_methods
3.45.
const_forget
3.46.
const_generic_impls_guard
3.47.
const_int_pow
3.48.
const_int_sign
3.49.
const_int_unchecked_arith
3.50.
const_nonnull_slice_from_raw_parts
3.51.
const_nonzero_int_methods
3.52.
const_overflowing_int_methods
3.53.
const_pref_align_of
3.54.
const_ptr_offset
3.55.
const_ptr_offset_from
3.56.
const_result
3.57.
const_saturating_int_methods
3.58.
const_slice_from_raw_parts
3.59.
const_slice_ptr_len
3.60.
const_transmute
3.61.
const_type_id
3.62.
const_type_name
3.63.
const_wrapping_int_methods
3.64.
constctlz
3.65.
container_error_extra
3.66.
convert_float_to_int
3.67.
core_intrinsics
3.68.
core_panic
3.69.
core_private_bignum
3.70.
core_private_diy_float
3.71.
cow_is_borrowed
3.72.
deadline_api
3.73.
debug_non_exhaustive
3.74.
dec2flt
3.75.
deque_make_contiguous
3.76.
derive_clone_copy
3.77.
derive_eq
3.78.
discriminant_kind
3.79.
dispatch_from_dyn
3.80.
div_duration
3.81.
drain_filter
3.82.
duration_constants
3.83.
entry_insert
3.84.
error_iter
3.85.
error_type_id
3.86.
exact_size_is_empty
3.87.
extend_one
3.88.
fd
3.89.
fd_read
3.90.
fixed_size_array
3.91.
flt2dec
3.92.
fmt_internals
3.93.
fn_traits
3.94.
foo
3.95.
forget_unsized
3.96.
format_args_nl
3.97.
future_readiness_fns
3.98.
gen_future
3.99.
generator_trait
3.100.
get_mut_unchecked
3.101.
global_asm
3.102.
hash_raw_entry
3.103.
hash_set_entry
3.104.
hashmap_internals
3.105.
inner_deref
3.106.
int_error_internals
3.107.
int_error_matching
3.108.
integer_atomics
3.109.
internal_uninit_const
3.110.
into_future
3.111.
io_slice_advance
3.112.
ip
3.113.
is_sorted
3.114.
iter_is_partitioned
3.115.
iter_map_while
3.116.
iter_order_by
3.117.
iter_partition_in_place
3.118.
iterator_fold_self
3.119.
layout_for_ptr
3.120.
leading_trailing_ones
3.121.
liballoc_internals
3.122.
libstd_io_internals
3.123.
libstd_sys_internals
3.124.
libstd_thread_internals
3.125.
linked_list_cursors
3.126.
linked_list_extras
3.127.
linked_list_prepend
3.128.
linked_list_remove
3.129.
llvm_asm
3.130.
log_syntax
3.131.
map_entry_replace
3.132.
map_first_last
3.133.
maybe_uninit_extra
3.134.
maybe_uninit_ref
3.135.
maybe_uninit_slice
3.136.
maybe_uninit_slice_assume_init
3.137.
maybe_uninit_uninit_array
3.138.
new_uninit
3.139.
nonnull_slice_from_raw_parts
3.140.
once_poison
3.141.
option_expect_none
3.142.
option_result_contains
3.143.
option_unwrap_none
3.144.
option_zip
3.145.
or_insert_with_key
3.146.
osstring_ascii
3.147.
panic_abort
3.148.
panic_info_message
3.149.
panic_internals
3.150.
panic_unwind
3.151.
pattern
3.152.
peekable_next_if
3.153.
poll_map
3.154.
print_internals
3.155.
proc_macro_def_site
3.156.
proc_macro_diagnostic
3.157.
proc_macro_internals
3.158.
proc_macro_is_available
3.159.
proc_macro_quote
3.160.
proc_macro_raw_ident
3.161.
proc_macro_span
3.162.
process_exitcode_placeholder
3.163.
process_internals
3.164.
profiler_runtime_lib
3.165.
ptr_internals
3.166.
ptr_offset_from
3.167.
ptr_wrapping_offset_from
3.168.
range_is_empty
3.169.
raw
3.170.
raw_vec_internals
3.171.
rc_into_raw_non_null
3.172.
read_initializer
3.173.
receiver_trait
3.174.
refcell_take
3.175.
renamed_spin_loop
3.176.
result_cloned
3.177.
result_contains_err
3.178.
result_copied
3.179.
result_flattening
3.180.
rt
3.181.
seek_convenience
3.182.
set_stdio
3.183.
sgx_platform
3.184.
shrink_to
3.185.
slice_concat_ext
3.186.
slice_concat_trait
3.187.
slice_fill
3.188.
slice_index_methods
3.189.
slice_internals
3.190.
slice_iter_mut_as_slice
3.191.
slice_partition_at_index
3.192.
slice_partition_dedup
3.193.
slice_ptr_len
3.194.
slice_ptr_range
3.195.
sort_internals
3.196.
split_inclusive
3.197.
std_internals
3.198.
stdsimd
3.199.
step_trait
3.200.
step_trait_ext
3.201.
str_internals
3.202.
tau_constant
3.203.
termination_trait_lib
3.204.
test
3.205.
thread_id_value
3.206.
thread_local_internals
3.207.
thread_spawn_unchecked
3.208.
tidy_test_never_used_anywhere_else
3.209.
toowned_clone_into
3.210.
total_cmp
3.211.
trace_macros
3.212.
trusted_len
3.213.
try_find
3.214.
try_reserve
3.215.
try_trait
3.216.
type_name_of_val
3.217.
unchecked_math
3.218.
unicode_internals
3.219.
unsafe_cell_raw_get
3.220.
unsize
3.221.
unwrap_infallible
3.222.
update_panic_count
3.223.
vec_drain_as_slice
3.224.
vec_into_raw_parts
3.225.
vec_leak
3.226.
vec_remove_item
3.227.
vec_resize_default
3.228.
wake_trait
3.229.
wasi_ext
3.230.
windows_by_handle
3.231.
windows_c
3.232.
windows_file_type_ext
3.233.
windows_handle
3.234.
windows_net
3.235.
windows_stdio
3.236.
with_options
3.237.
wrapping_int_impl
3.238.
wrapping_next_power_of_two
3.239.
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