The Unstable Book
1.
Compiler flags
1.1.
linker_flavor
1.2.
profile
1.3.
remap_path_prefix
2.
Language features
2.1.
abi_msp430_interrupt
2.2.
abi_ptx
2.3.
abi_sysv64
2.4.
abi_thiscall
2.5.
abi_unadjusted
2.6.
abi_vectorcall
2.7.
abi_x86_interrupt
2.8.
advanced_slice_patterns
2.9.
allocator_internals
2.10.
allow_fail
2.11.
allow_internal_unstable
2.12.
asm
2.13.
associated_type_defaults
2.14.
attr_literals
2.15.
box_patterns
2.16.
box_syntax
2.17.
catch_expr
2.18.
cfg_target_feature
2.19.
cfg_target_has_atomic
2.20.
cfg_target_thread_local
2.21.
cfg_target_vendor
2.22.
compile_error
2.23.
compiler_builtins
2.24.
concat_idents
2.25.
conservative_impl_trait
2.26.
const_fn
2.27.
const_indexing
2.28.
custom_attribute
2.29.
custom_derive
2.30.
decl_macro
2.31.
default_type_parameter_fallback
2.32.
drop_types_in_const
2.33.
dropck_eyepatch
2.34.
dropck_parametricity
2.35.
exclusive_range_pattern
2.36.
fundamental
2.37.
generic_param_attrs
2.38.
global_allocator
2.39.
global_asm
2.40.
i128_type
2.41.
inclusive_range_syntax
2.42.
intrinsics
2.43.
lang_items
2.44.
link_args
2.45.
link_cfg
2.46.
link_llvm_intrinsics
2.47.
linkage
2.48.
log_syntax
2.49.
macro_reexport
2.50.
macro_vis_matcher
2.51.
main
2.52.
naked_functions
2.53.
needs_allocator
2.54.
needs_panic_runtime
2.55.
never_type
2.56.
no_core
2.57.
no_debug
2.58.
non_ascii_idents
2.59.
omit_gdb_pretty_printer_section
2.60.
on_unimplemented
2.61.
optin_builtin_traits
2.62.
overlapping_marker_traits
2.63.
panic_runtime
2.64.
placement_in_syntax
2.65.
platform_intrinsics
2.66.
plugin
2.67.
plugin_registrar
2.68.
prelude_import
2.69.
proc_macro
2.70.
profiler_runtime
2.71.
quote
2.72.
repr_align
2.73.
repr_simd
2.74.
rustc_attrs
2.75.
rustc_diagnostic_macros
2.76.
rvalue_static_promotion
2.77.
sanitizer_runtime
2.78.
simd
2.79.
simd_ffi
2.80.
slice_patterns
2.81.
specialization
2.82.
staged_api
2.83.
start
2.84.
static_nobundle
2.85.
stmt_expr_attributes
2.86.
structural_match
2.87.
target_feature
2.88.
thread_local
2.89.
trace_macros
2.90.
type_ascription
2.91.
unboxed_closures
2.92.
unsized_tuple_coercion
2.93.
untagged_unions
2.94.
unwind_attributes
2.95.
use_extern_macros
2.96.
used
3.
Library Features
3.1.
alloc
3.2.
alloc_jemalloc
3.3.
alloc_system
3.4.
allocator_api
3.5.
as_c_str
3.6.
ascii_ctype
3.7.
box_heap
3.8.
c_void_variant
3.9.
char_error_internals
3.10.
char_escape_debug
3.11.
coerce_unsized
3.12.
collection_placement
3.13.
collections
3.14.
collections_range
3.15.
compile_error_macro
3.16.
compiler_builtins_lib
3.17.
compiler_fences
3.18.
concat_idents_macro
3.19.
core_char_ext
3.20.
core_float
3.21.
core_intrinsics
3.22.
core_panic
3.23.
core_private_bignum
3.24.
core_private_diy_float
3.25.
core_slice_ext
3.26.
core_str_ext
3.27.
dec2flt
3.28.
decode_utf8
3.29.
derive_clone_copy
3.30.
derive_eq
3.31.
discriminant_value
3.32.
error_type_id
3.33.
exact_size_is_empty
3.34.
fd
3.35.
fd_read
3.36.
fixed_size_array
3.37.
flt2dec
3.38.
fmt_flags_align
3.39.
fmt_internals
3.40.
fn_traits
3.41.
fnbox
3.42.
from_utf8_error_as_bytes
3.43.
fused
3.44.
future_atomic_orderings
3.45.
get_type_id
3.46.
heap_api
3.47.
hint_core_should_pause
3.48.
i128
3.49.
inclusive_range
3.50.
int_error_internals
3.51.
integer_atomics
3.52.
into_boxed_c_str
3.53.
into_boxed_os_str
3.54.
into_boxed_path
3.55.
io
3.56.
io_error_internals
3.57.
ip
3.58.
iter_rfind
3.59.
iterator_for_each
3.60.
iterator_step_by
3.61.
libstd_io_internals
3.62.
libstd_sys_internals
3.63.
libstd_thread_internals
3.64.
linked_list_extras
3.65.
lookup_host
3.66.
manually_drop
3.67.
mpsc_select
3.68.
n16
3.69.
needs_drop
3.70.
never_type_impls
3.71.
nonzero
3.72.
offset_to
3.73.
once_poison
3.74.
option_entry
3.75.
ord_max_min
3.76.
panic_abort
3.77.
panic_col
3.78.
panic_unwind
3.79.
pattern
3.80.
placement_in
3.81.
placement_new_protocol
3.82.
print_internals
3.83.
proc_macro
3.84.
proc_macro_internals
3.85.
profiler_runtime_lib
3.86.
rand
3.87.
range_contains
3.88.
raw
3.89.
read_initializer
3.90.
rt
3.91.
rustc_private
3.92.
sanitizer_runtime_lib
3.93.
set_stdio
3.94.
shared
3.95.
sip_hash_13
3.96.
slice_concat_ext
3.97.
slice_get_slice
3.98.
slice_rotate
3.99.
slice_rsplit
3.100.
sort_internals
3.101.
splice
3.102.
step_trait
3.103.
str_box_extras
3.104.
str_checked_slicing
3.105.
str_escape
3.106.
str_internals
3.107.
str_mut_extras
3.108.
swap_nonoverlapping
3.109.
take_set_limit
3.110.
tcpstream_connect_timeout
3.111.
test
3.112.
thread_local_internals
3.113.
thread_local_state
3.114.
toowned_clone_into
3.115.
trusted_len
3.116.
try_from
3.117.
try_trait
3.118.
unicode
3.119.
unique
3.120.
unsize
3.121.
update_panic_count
3.122.
utf8_error_error_len
3.123.
vec_remove_item
3.124.
vec_resize_default
3.125.
windows_c
3.126.
windows_handle
3.127.
windows_net
3.128.
windows_stdio
into_boxed_os_str
The tracking issue for this feature is:
#40380