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.
crate_visibility_modifier
2.31.
custom_attribute
2.32.
custom_derive
2.33.
decl_macro
2.34.
default_type_parameter_fallback
2.35.
doc_cfg
2.36.
doc_masked
2.37.
dotdoteq_in_patterns
2.38.
dropck_eyepatch
2.39.
dropck_parametricity
2.40.
dyn_trait
2.41.
exclusive_range_pattern
2.42.
extern_types
2.43.
fn_must_use
2.44.
fundamental
2.45.
generators
2.46.
generic_param_attrs
2.47.
global_allocator
2.48.
global_asm
2.49.
i128_type
2.50.
inclusive_range_syntax
2.51.
intrinsics
2.52.
lang_items
2.53.
link_args
2.54.
link_cfg
2.55.
link_llvm_intrinsics
2.56.
linkage
2.57.
log_syntax
2.58.
macro_reexport
2.59.
macro_vis_matcher
2.60.
main
2.61.
match_beginning_vert
2.62.
match_default_bindings
2.63.
naked_functions
2.64.
needs_allocator
2.65.
needs_panic_runtime
2.66.
never_type
2.67.
no_core
2.68.
no_debug
2.69.
non_ascii_idents
2.70.
omit_gdb_pretty_printer_section
2.71.
on_unimplemented
2.72.
optin_builtin_traits
2.73.
overlapping_marker_traits
2.74.
panic_runtime
2.75.
placement_in_syntax
2.76.
platform_intrinsics
2.77.
plugin
2.78.
plugin_registrar
2.79.
prelude_import
2.80.
proc_macro
2.81.
profiler_runtime
2.82.
quote
2.83.
repr128
2.84.
repr_align
2.85.
repr_simd
2.86.
rustc_attrs
2.87.
rustc_const_unstable
2.88.
rustc_diagnostic_macros
2.89.
sanitizer_runtime
2.90.
simd
2.91.
simd_ffi
2.92.
slice_patterns
2.93.
specialization
2.94.
staged_api
2.95.
start
2.96.
static_nobundle
2.97.
stmt_expr_attributes
2.98.
structural_match
2.99.
target_feature
2.100.
thread_local
2.101.
trace_macros
2.102.
type_ascription
2.103.
unboxed_closures
2.104.
underscore_lifetimes
2.105.
unsized_tuple_coercion
2.106.
untagged_unions
2.107.
unwind_attributes
2.108.
use_extern_macros
2.109.
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.
array_error_internals
3.7.
ascii_ctype
3.8.
box_heap
3.9.
c_void_variant
3.10.
char_error_internals
3.11.
coerce_unsized
3.12.
collection_placement
3.13.
collections_range
3.14.
compiler_builtins_lib
3.15.
concat_idents_macro
3.16.
const_align_of
3.17.
const_atomic_bool_new
3.18.
const_atomic_i16_new
3.19.
const_atomic_i32_new
3.20.
const_atomic_i64_new
3.21.
const_atomic_i8_new
3.22.
const_atomic_isize_new
3.23.
const_atomic_ptr_new
3.24.
const_atomic_u16_new
3.25.
const_atomic_u32_new
3.26.
const_atomic_u64_new
3.27.
const_atomic_u8_new
3.28.
const_atomic_usize_new
3.29.
const_cell_new
3.30.
const_max_value
3.31.
const_min_value
3.32.
const_nonzero_new
3.33.
const_once_new
3.34.
const_ptr_null
3.35.
const_ptr_null_mut
3.36.
const_refcell_new
3.37.
const_shared_new
3.38.
const_size_of
3.39.
const_unique_new
3.40.
const_unsafe_cell_new
3.41.
core_char_ext
3.42.
core_float
3.43.
core_intrinsics
3.44.
core_panic
3.45.
core_private_bignum
3.46.
core_private_diy_float
3.47.
core_slice_ext
3.48.
core_str_ext
3.49.
dec2flt
3.50.
decode_utf8
3.51.
derive_clone_copy
3.52.
derive_eq
3.53.
drain_filter
3.54.
duration_from_micros
3.55.
entry_and_modify
3.56.
entry_or_default
3.57.
error_type_id
3.58.
exact_size_is_empty
3.59.
fd
3.60.
fd_read
3.61.
fixed_size_array
3.62.
flt2dec
3.63.
fmt_flags_align
3.64.
fmt_internals
3.65.
fn_traits
3.66.
fnbox
3.67.
from_ref
3.68.
from_utf8_error_as_bytes
3.69.
fused
3.70.
future_atomic_orderings
3.71.
generator_trait
3.72.
get_type_id
3.73.
getpid
3.74.
heap_api
3.75.
hint_core_should_pause
3.76.
i128
3.77.
inclusive_range
3.78.
int_error_internals
3.79.
integer_atomics
3.80.
io
3.81.
io_error_internals
3.82.
ip
3.83.
ip_constructors
3.84.
iter_rfind
3.85.
iter_rfold
3.86.
iterator_step_by
3.87.
libstd_io_internals
3.88.
libstd_sys_internals
3.89.
libstd_thread_internals
3.90.
linked_list_extras
3.91.
lookup_host
3.92.
map_entry_replace
3.93.
mpsc_select
3.94.
n16
3.95.
never_type_impls
3.96.
nonzero
3.97.
offset_to
3.98.
once_poison
3.99.
option_ref_mut_cloned
3.100.
panic_abort
3.101.
panic_col
3.102.
panic_unwind
3.103.
pattern
3.104.
placement_in
3.105.
placement_new_protocol
3.106.
pointer_methods
3.107.
print_internals
3.108.
proc_macro
3.109.
proc_macro_internals
3.110.
profiler_runtime_lib
3.111.
rand
3.112.
range_contains
3.113.
raw
3.114.
rc_downcast
3.115.
read_initializer
3.116.
refcell_replace_swap
3.117.
rt
3.118.
rustc_private
3.119.
sanitizer_runtime_lib
3.120.
set_stdio
3.121.
shared
3.122.
sip_hash_13
3.123.
slice_concat_ext
3.124.
slice_get_slice
3.125.
slice_rotate
3.126.
slice_rsplit
3.127.
sort_internals
3.128.
splice
3.129.
step_trait
3.130.
str_escape
3.131.
str_internals
3.132.
string_retain
3.133.
swap_nonoverlapping
3.134.
swap_with_slice
3.135.
take_set_limit
3.136.
test
3.137.
thread_local_internals
3.138.
thread_local_state
3.139.
toowned_clone_into
3.140.
trusted_len
3.141.
try_from
3.142.
try_trait
3.143.
unicode
3.144.
unique
3.145.
unreachable
3.146.
unsize
3.147.
update_panic_count
3.148.
vec_remove_item
3.149.
vec_resize_default
3.150.
windows_c
3.151.
windows_handle
3.152.
windows_net
3.153.
windows_stdio
match_default_bindings