cargo +stable build --release -p icarus
   Compiling proc-macro2 v1.0.103
   Compiling quote v1.0.42
   Compiling unicode-ident v1.0.22
   Compiling autocfg v1.5.0
   Compiling libc v0.2.177
   Compiling cfg_aliases v0.2.1
   Compiling bitflags v2.10.0
   Compiling rustix v1.1.2
   Compiling linux-raw-sys v0.11.0
   Compiling smallvec v1.15.1
   Compiling cfg-if v1.0.4
   Compiling thiserror v2.0.17
   Compiling equivalent v1.0.2
   Compiling hashbrown v0.16.1
   Compiling endian-type v0.1.2
   Compiling log v0.4.28
   Compiling spin v0.10.0
   Compiling home v0.5.12
   Compiling memchr v2.7.6
   Compiling utf8parse v0.2.2
   Compiling unicode-width v0.2.2
   Compiling rustc-hash v2.1.1
   Compiling unicode-segmentation v1.12.0
   Compiling arrayvec v0.7.6
   Compiling nix v0.30.1
   Compiling nibble_vec v0.1.0
   Compiling unsize v1.1.0
   Compiling radix_trie v0.2.1
   Compiling triomphe v0.1.15
   Compiling indexmap v2.12.1
   Compiling rootcause-internals v0.10.0
   Compiling syn v2.0.110
   Compiling rootcause v0.10.0
   Compiling fd-lock v4.0.4
   Compiling atomic-wait v1.1.0
   Compiling enum-map-derive v0.17.0
   Compiling thiserror-impl v2.0.17
   Compiling enum-map v2.7.3
   Compiling icarus-common v0.1.0 (/tmp/tmppr4lc3gz/icarus/icarus-tmp/icarus-common)
   Compiling rustyline v17.0.2
   Compiling icarus-board v0.1.0 (/tmp/tmppr4lc3gz/icarus/icarus-tmp/icarus-board)
   Compiling icarus v0.0.0 (/tmp/tmppr4lc3gz/icarus/icarus-tmp)
error[E0658]: use of unstable library feature `new_zeroed_alloc`
  --> src/search/history.rs:35:18
   |
35 |         unsafe { Box::new_zeroed().assume_init() }
   |                  ^^^^^^^^^^^^^^^
   |
   = note: see issue #129396 <https://github.com/rust-lang/rust/issues/129396> for more information

For more information about this error, try `rustc --explain E0658`.
error: could not compile `icarus` (bin "icarus") due to 1 previous error
make: *** [Makefile:8: native] Error 101