cargo pgo instrument
[2025-09-25T21:40:10Z INFO cargo_pgo::pgo::instrument] PGO profile directory will be cleared.
[2025-09-25T21:40:10Z INFO cargo_pgo::pgo::instrument] PGO profiles will be stored into /tmp/tmp3y8gbkn2/Reckless/Reckless-tmp/target/pgo-profiles.
Compiling proc-macro2 v1.0.95
Compiling unicode-ident v1.0.18
Compiling glob v0.3.2
Compiling libc v0.2.175
Compiling prettyplease v0.2.32
Compiling cfg-if v1.0.0
Compiling regex-syntax v0.8.5
Compiling memchr v2.7.4
Compiling clang-sys v1.8.1
Compiling minimal-lexical v0.2.1
Compiling quote v1.0.40
Compiling nom v7.1.3
Compiling syn v2.0.101
Compiling regex-automata v0.4.9
Compiling libloading v0.8.6
Compiling bindgen v0.71.1
Compiling either v1.15.0
Compiling shlex v1.3.0
Compiling itertools v0.13.0
Compiling cexpr v0.6.0
Compiling regex v1.11.1
Compiling bitflags v2.9.0
Compiling log v0.4.27
Compiling rustc-hash v2.1.1
Compiling cc v1.2.22
Compiling reckless v0.9.0-dev (/tmp/tmp3y8gbkn2/Reckless/Reckless-tmp)
[0m[1m[38;5;9merror[E0658][0m[0m[1m: use of unstable library feature `unsigned_is_multiple_of`[0m
[0m [0m[0m[1m[38;5;12m--> [0m[0msrc/misc.rs:47:25[0m
[0m [0m[0m[1m[38;5;12m|[0m
[0m[1m[38;5;12m47[0m[0m [0m[0m[1m[38;5;12m|[0m[0m [0m[0m if sorted.len().is_multiple_of(2) {[0m
[0m [0m[0m[1m[38;5;12m|[0m[0m [0m[0m[1m[38;5;9m^^^^^^^^^^^^^^[0m
[0m [0m[0m[1m[38;5;12m|[0m
[0m [0m[0m[1m[38;5;12m= [0m[0m[1mnote[0m[0m: see issue #128101 <https://github.com/rust-lang/rust/issues/128101> for more information[0m
[0m[1mFor more information about this error, try `rustc --explain E0658`.[0m
error: could not compile `reckless` (bin "reckless") due to 1 previous error
[2025-09-25T21:40:24Z ERROR cargo_pgo::pgo::instrument] PGO instrumentation build has failed.
Cargo finished with an error (101)
make: *** [Makefile:24: rule] Error 1