The Unstable Book
1.
abi_msp430_interrupt
2.
abi_ptx
3.
abi_sysv64
4.
abi_unadjusted
5.
abi_vectorcall
6.
abi_x86_interrupt
7.
advanced_slice_patterns
8.
alloc
9.
alloc_jemalloc
10.
alloc_system
11.
allocator
12.
allow_internal_unstable
13.
as_unsafe_cell
14.
ascii_ctype
15.
asm
16.
associated_consts
17.
associated_type_defaults
18.
attr_literals
19.
binary_heap_extras
20.
binary_heap_peek_mut_pop
21.
borrow_state
22.
box_heap
23.
box_patterns
24.
box_syntax
25.
c_void_variant
26.
catch_expr
27.
cfg_target_feature
28.
cfg_target_has_atomic
29.
cfg_target_thread_local
30.
cfg_target_vendor
31.
char_escape_debug
32.
closure_to_fn_coercion
33.
coerce_unsized
34.
collection_placement
35.
collections
36.
collections_range
37.
command_envs
38.
compiler_builtins
39.
compiler_builtins_lib
40.
concat_idents
41.
concat_idents_macro
42.
conservative_impl_trait
43.
const_fn
44.
const_indexing
45.
core_char_ext
46.
core_float
47.
core_intrinsics
48.
core_panic
49.
core_private_bignum
50.
core_private_diy_float
51.
core_slice_ext
52.
core_str_ext
53.
custom_attribute
54.
custom_derive
55.
dec2flt
56.
decode_utf8
57.
default_type_parameter_fallback
58.
derive_clone_copy
59.
derive_eq
60.
discriminant_value
61.
drop_types_in_const
62.
dropck_eyepatch
63.
dropck_parametricity
64.
enumset
65.
error_type_id
66.
exact_size_is_empty
67.
exclusive_range_pattern
68.
fd
69.
fd_read
70.
fixed_size_array
71.
float_extras
72.
flt2dec
73.
fmt_flags_align
74.
fmt_internals
75.
fn_traits
76.
fnbox
77.
fundamental
78.
fused
79.
future_atomic_orderings
80.
generic_param_attrs
81.
get_type_id
82.
heap_api
83.
i128
84.
i128_type
85.
inclusive_range
86.
inclusive_range_syntax
87.
int_error_internals
88.
integer_atomics
89.
into_boxed_c_str
90.
into_boxed_os_str
91.
into_boxed_path
92.
intrinsics
93.
io
94.
io_error_internals
95.
ip
96.
is_unique
97.
iter_rfind
98.
lang_items
99.
libstd_io_internals
100.
libstd_sys_internals
101.
libstd_thread_internals
102.
link_args
103.
link_cfg
104.
link_llvm_intrinsics
105.
linkage
106.
linked_list_extras
107.
log_syntax
108.
lookup_host
109.
loop_break_value
110.
macro_reexport
111.
main
112.
map_entry_recover_keys
113.
mpsc_select
114.
n16
115.
naked_functions
116.
needs_allocator
117.
needs_panic_runtime
118.
never_type
119.
never_type_impls
120.
no_core
121.
no_debug
122.
non_ascii_idents
123.
nonzero
124.
omit_gdb_pretty_printer_section
125.
on_unimplemented
126.
once_poison
127.
oom
128.
optin_builtin_traits
129.
option_entry
130.
osstring_shrink_to_fit
131.
panic_abort
132.
panic_runtime
133.
panic_unwind
134.
pattern
135.
peek
136.
placement_in
137.
placement_in_syntax
138.
placement_new_protocol
139.
platform_intrinsics
140.
plugin
141.
plugin_registrar
142.
prelude_import
143.
print
144.
proc_macro
145.
proc_macro_internals
146.
process_try_wait
147.
pub_restricted
148.
question_mark_carrier
149.
quote
150.
rand
151.
range_contains
152.
raw
153.
rc_would_unwrap
154.
relaxed_adts
155.
repr_simd
156.
retain_hash_collection
157.
rt
158.
rustc_attrs
159.
rustc_diagnostic_macros
160.
rustc_private
161.
rustdoc
162.
rvalue_static_promotion
163.
sanitizer_runtime
164.
sanitizer_runtime_lib
165.
set_stdio
166.
shared
167.
simd
168.
simd_ffi
169.
sip_hash_13
170.
slice_concat_ext
171.
slice_get_slice
172.
slice_patterns
173.
sort_internals
174.
sort_unstable
175.
specialization
176.
staged_api
177.
start
178.
static_nobundle
179.
step_by
180.
step_trait
181.
stmt_expr_attributes
182.
str_escape
183.
str_internals
184.
struct_field_attributes
185.
structural_match
186.
target_feature
187.
test
188.
thread_id
189.
thread_local
190.
thread_local_internals
191.
thread_local_state
192.
trace_macros
193.
trusted_len
194.
try_from
195.
type_ascription
196.
unboxed_closures
197.
unicode
198.
unique
199.
unsize
200.
untagged_unions
201.
unwind_attributes
202.
update_panic_count
203.
use_extern_macros
204.
utf8_error_error_len
205.
vec_remove_item
206.
windows_c
207.
windows_handle
208.
windows_net
209.
windows_stdio
210.
windows_subsystem
211.
zero_one
pub_restricted
The tracking issue for this feature is: [#32409]