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_unsafe
2.12.
allow_internal_unstable
2.13.
asm
2.14.
associated_type_defaults
2.15.
attr_literals
2.16.
box_patterns
2.17.
box_syntax
2.18.
catch_expr
2.19.
cfg_target_feature
2.20.
cfg_target_has_atomic
2.21.
cfg_target_thread_local
2.22.
cfg_target_vendor
2.23.
clone_closures
2.24.
compiler_builtins
2.25.
concat_idents
2.26.
conservative_impl_trait
2.27.
const_fn
2.28.
const_indexing
2.29.
copy_closures
2.30.
custom_attribute
2.31.
custom_derive
2.32.
decl_macro
2.33.
default_type_parameter_fallback
2.34.
doc_cfg
2.35.
doc_masked
2.36.
dotdoteq_in_patterns
2.37.
dropck_eyepatch
2.38.
dropck_parametricity
2.39.
exclusive_range_pattern
2.40.
fn_must_use
2.41.
fundamental
2.42.
generators
2.43.
generic_param_attrs
2.44.
global_allocator
2.45.
global_asm
2.46.
i128_type
2.47.
inclusive_range_syntax
2.48.
intrinsics
2.49.
lang_items
2.50.
link_args
2.51.
link_cfg
2.52.
link_llvm_intrinsics
2.53.
linkage
2.54.
log_syntax
2.55.
macro_reexport
2.56.
macro_vis_matcher
2.57.
main
2.58.
match_beginning_vert
2.59.
match_default_bindings
2.60.
naked_functions
2.61.
needs_allocator
2.62.
needs_panic_runtime
2.63.
never_type
2.64.
no_core
2.65.
no_debug
2.66.
non_ascii_idents
2.67.
omit_gdb_pretty_printer_section
2.68.
on_unimplemented
2.69.
optin_builtin_traits
2.70.
overlapping_marker_traits
2.71.
panic_runtime
2.72.
placement_in_syntax
2.73.
platform_intrinsics
2.74.
plugin
2.75.
plugin_registrar
2.76.
prelude_import
2.77.
proc_macro
2.78.
profiler_runtime
2.79.
quote
2.80.
repr128
2.81.
repr_align
2.82.
repr_simd
2.83.
rustc_attrs
2.84.
rustc_const_unstable
2.85.
rustc_diagnostic_macros
2.86.
sanitizer_runtime
2.87.
simd
2.88.
simd_ffi
2.89.
slice_patterns
2.90.
specialization
2.91.
staged_api
2.92.
start
2.93.
static_nobundle
2.94.
stmt_expr_attributes
2.95.
structural_match
2.96.
target_feature
2.97.
thread_local
2.98.
trace_macros
2.99.
type_ascription
2.100.
unboxed_closures
2.101.
underscore_lifetimes
2.102.
unsized_tuple_coercion
2.103.
untagged_unions
2.104.
unwind_attributes
2.105.
use_extern_macros
2.106.
used
3.
Library Features
3.1.
align_offset
3.2.
alloc
3.3.
alloc_jemalloc
3.4.
alloc_system
3.5.
allocator_api
3.6.
ascii_ctype
3.7.
box_heap
3.8.
c_void_variant
3.9.
char_error_internals
3.10.
coerce_unsized
3.11.
collection_placement
3.12.
collections
3.13.
collections_range
3.14.
compiler_builtins_lib
3.15.
concat_idents_macro
3.16.
core_char_ext
3.17.
core_float
3.18.
core_intrinsics
3.19.
core_panic
3.20.
core_private_bignum
3.21.
core_private_diy_float
3.22.
core_slice_ext
3.23.
core_str_ext
3.24.
dec2flt
3.25.
decode_utf8
3.26.
derive_clone_copy
3.27.
derive_eq
3.28.
drain_filter
3.29.
duration_from_micros
3.30.
entry_and_modify
3.31.
entry_or_default
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.
generator_trait
3.46.
get_type_id
3.47.
heap_api
3.48.
hint_core_should_pause
3.49.
i128
3.50.
inclusive_range
3.51.
int_error_internals
3.52.
integer_atomics
3.53.
io
3.54.
io_error_internals
3.55.
ip
3.56.
ip_constructors
3.57.
iter_rfind
3.58.
iter_rfold
3.59.
iterator_step_by
3.60.
libstd_io_internals
3.61.
libstd_sys_internals
3.62.
libstd_thread_internals
3.63.
linked_list_extras
3.64.
lookup_host
3.65.
map_entry_replace
3.66.
mpsc_select
3.67.
n16
3.68.
never_type_impls
3.69.
nonzero
3.70.
offset_to
3.71.
once_poison
3.72.
option_ref_mut_cloned
3.73.
panic_abort
3.74.
panic_col
3.75.
panic_unwind
3.76.
pattern
3.77.
placement_in
3.78.
placement_new_protocol
3.79.
pointer_methods
3.80.
print_internals
3.81.
proc_macro
3.82.
proc_macro_internals
3.83.
profiler_runtime_lib
3.84.
rand
3.85.
range_contains
3.86.
raw
3.87.
rc_downcast
3.88.
read_initializer
3.89.
refcell_replace_swap
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_escape
3.104.
str_internals
3.105.
string_retain
3.106.
swap_nonoverlapping
3.107.
swap_with_slice
3.108.
take_set_limit
3.109.
test
3.110.
thread_local_internals
3.111.
thread_local_state
3.112.
toowned_clone_into
3.113.
trusted_len
3.114.
try_from
3.115.
try_trait
3.116.
unicode
3.117.
unique
3.118.
unreachable
3.119.
unsize
3.120.
update_panic_count
3.121.
vec_remove_item
3.122.
vec_resize_default
3.123.
windows_c
3.124.
windows_handle
3.125.
windows_net
3.126.
windows_stdio
no_core
The tracking issue for this feature is:
#29639