The Unstable Book
1.
Compiler flags
1.1.
linker_flavor
2.
Language features
2.1.
abi_msp430_interrupt
2.2.
abi_ptx
2.3.
abi_sysv64
2.4.
abi_unadjusted
2.5.
abi_vectorcall
2.6.
abi_x86_interrupt
2.7.
advanced_slice_patterns
2.8.
allocator
2.9.
allow_internal_unstable
2.10.
asm
2.11.
associated_consts
2.12.
associated_type_defaults
2.13.
attr_literals
2.14.
box_patterns
2.15.
box_syntax
2.16.
catch_expr
2.17.
cfg_target_feature
2.18.
cfg_target_has_atomic
2.19.
cfg_target_thread_local
2.20.
cfg_target_vendor
2.21.
closure_to_fn_coercion
2.22.
compiler_builtins
2.23.
concat_idents
2.24.
conservative_impl_trait
2.25.
const_fn
2.26.
const_indexing
2.27.
custom_attribute
2.28.
custom_derive
2.29.
default_type_parameter_fallback
2.30.
drop_types_in_const
2.31.
dropck_eyepatch
2.32.
dropck_parametricity
2.33.
exclusive_range_pattern
2.34.
fundamental
2.35.
generic_param_attrs
2.36.
global_asm
2.37.
i128_type
2.38.
inclusive_range_syntax
2.39.
intrinsics
2.40.
lang_items
2.41.
link_args
2.42.
link_cfg
2.43.
link_llvm_intrinsics
2.44.
linkage
2.45.
log_syntax
2.46.
loop_break_value
2.47.
macro_reexport
2.48.
macro_vis_matcher
2.49.
main
2.50.
naked_functions
2.51.
needs_allocator
2.52.
needs_panic_runtime
2.53.
never_type
2.54.
no_core
2.55.
no_debug
2.56.
non_ascii_idents
2.57.
omit_gdb_pretty_printer_section
2.58.
on_unimplemented
2.59.
optin_builtin_traits
2.60.
overlapping_marker_traits
2.61.
panic_runtime
2.62.
placement_in_syntax
2.63.
platform_intrinsics
2.64.
plugin
2.65.
plugin_registrar
2.66.
prelude_import
2.67.
proc_macro
2.68.
quote
2.69.
relaxed_adts
2.70.
repr_simd
2.71.
rustc_attrs
2.72.
rustc_diagnostic_macros
2.73.
rvalue_static_promotion
2.74.
sanitizer_runtime
2.75.
simd
2.76.
simd_ffi
2.77.
slice_patterns
2.78.
specialization
2.79.
staged_api
2.80.
start
2.81.
static_nobundle
2.82.
stmt_expr_attributes
2.83.
struct_field_attributes
2.84.
structural_match
2.85.
target_feature
2.86.
thread_local
2.87.
trace_macros
2.88.
type_ascription
2.89.
unboxed_closures
2.90.
untagged_unions
2.91.
unwind_attributes
2.92.
use_extern_macros
2.93.
used
3.
Library Features
3.1.
alloc_jemalloc
3.2.
alloc_system
3.3.
alloc
3.4.
as_c_str
3.5.
as_unsafe_cell
3.6.
ascii_ctype
3.7.
binary_heap_extras
3.8.
binary_heap_peek_mut_pop
3.9.
borrow_state
3.10.
box_heap
3.11.
c_void_variant
3.12.
char_escape_debug
3.13.
coerce_unsized
3.14.
collection_placement
3.15.
collections_range
3.16.
collections
3.17.
command_envs
3.18.
compiler_builtins_lib
3.19.
compiler_fences
3.20.
concat_idents_macro
3.21.
core_char_ext
3.22.
core_float
3.23.
core_intrinsics
3.24.
core_panic
3.25.
core_private_bignum
3.26.
core_private_diy_float
3.27.
core_slice_ext
3.28.
core_str_ext
3.29.
dec2flt
3.30.
decode_utf8
3.31.
derive_clone_copy
3.32.
derive_eq
3.33.
discriminant_value
3.34.
enumset
3.35.
error_type_id
3.36.
exact_size_is_empty
3.37.
fd
3.38.
fd_read
3.39.
fixed_size_array
3.40.
float_bits_conv
3.41.
float_extras
3.42.
flt2dec
3.43.
fmt_flags_align
3.44.
fmt_internals
3.45.
fn_traits
3.46.
fnbox
3.47.
from_utf8_error_as_bytes
3.48.
fused
3.49.
future_atomic_orderings
3.50.
get_type_id
3.51.
heap_api
3.52.
i128
3.53.
inclusive_range
3.54.
integer_atomics
3.55.
into_boxed_c_str
3.56.
into_boxed_os_str
3.57.
into_boxed_path
3.58.
io_error_internals
3.59.
io
3.60.
ip
3.61.
is_unique
3.62.
iter_rfind
3.63.
libstd_io_internals
3.64.
libstd_sys_internals
3.65.
libstd_thread_internals
3.66.
linked_list_extras
3.67.
lookup_host
3.68.
manually_drop
3.69.
map_entry_recover_keys
3.70.
mpsc_select
3.71.
n16
3.72.
never_type_impls
3.73.
nonzero
3.74.
offset_to
3.75.
once_poison
3.76.
oom
3.77.
option_entry
3.78.
osstring_shrink_to_fit
3.79.
panic_abort
3.80.
panic_unwind
3.81.
pattern
3.82.
peek
3.83.
placement_in
3.84.
placement_new_protocol
3.85.
print
3.86.
proc_macro_internals
3.87.
process_try_wait
3.88.
question_mark_carrier
3.89.
rand
3.90.
range_contains
3.91.
raw
3.92.
rc_would_unwrap
3.93.
retain_hash_collection
3.94.
reverse_cmp_key
3.95.
rt
3.96.
rustc_private
3.97.
sanitizer_runtime_lib
3.98.
set_stdio
3.99.
shared
3.100.
sip_hash_13
3.101.
slice_concat_ext
3.102.
slice_get_slice
3.103.
slice_rsplit
3.104.
sort_internals
3.105.
sort_unstable
3.106.
step_by
3.107.
step_trait
3.108.
str_checked_slicing
3.109.
str_escape
3.110.
str_internals
3.111.
str_mut_extras
3.112.
test
3.113.
thread_id
3.114.
thread_local_internals
3.115.
thread_local_state
3.116.
toowned_clone_into
3.117.
trusted_len
3.118.
try_from
3.119.
unicode
3.120.
unique
3.121.
unsize
3.122.
utf8_error_error_len
3.123.
vec_remove_item
3.124.
windows_c
3.125.
windows_handle
3.126.
windows_net
3.127.
windows_stdio
3.128.
zero_one
rc_would_unwrap
The tracking issue for this feature is:
#28356