[Pkg-rust-maintainers] Bug#1134963: rust-num-prime: FTBFS: flaky tests?

[Sebastian Ramacher]

Source: rust-num-prime
Version: 0.4.4-2
Severity: serious
Tags: ftbfs
Justification: fails to build from source (but built successfully in the past)
X-Debbugs-Cc: sramacher at debian.org

Dear maintainer,

rust-num-prime FTBFS on amd64 and riscv64 with:


failures:

---- rand::tests::rand_prime stdout ----

thread 'rand::tests::rand_prime' (996) panicked at src/nt_funcs.rs:837:36:
index out of bounds: the len is 54 but the index is 54
stack backtrace:
   0: __rustc::rust_begin_unwind
             at /usr/src/rustc-1.94.1/library/std/src/panicking.rs:689:5
   1: core::panicking::panic_fmt
             at /usr/src/rustc-1.94.1/library/core/src/panicking.rs:80:14
   2: core::panicking::panic_bounds_check
             at /usr/src/rustc-1.94.1/library/core/src/panicking.rs:271:5
   3: num_prime::nt_funcs::next_prime
             at /usr/share/cargo/registry/num-prime-0.4.4/src/nt_funcs.rs:837:36
   4: num_prime::rand::<impl num_prime::traits::RandPrime<u8> for R>::gen_prime
             at /usr/share/cargo/registry/num-prime-0.4.4/src/rand.rs:22:45
   5: num_prime::rand::<impl num_prime::traits::RandPrime<u8> for R>::gen_safe_prime
             at /usr/share/cargo/registry/num-prime-0.4.4/src/rand.rs:51:34
   6: num_prime::rand::tests::rand_prime
             at /usr/share/cargo/registry/num-prime-0.4.4/src/rand.rs:226:25
   7: num_prime::rand::tests::rand_prime::{{closure}}
             at /usr/share/cargo/registry/num-prime-0.4.4/src/rand.rs:210:20
   8: core::ops::function::FnOnce::call_once
             at /usr/src/rustc-1.94.1/library/core/src/ops/function.rs:250:5
   9: core::ops::function::FnOnce::call_once
             at /usr/src/rustc-1.94.1/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.


failures:
    rand::tests::rand_prime

test result: FAILED. 22 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.38s

error: test failed, to rerun pass `--lib`

See 
https://buildd.debian.org/status/fetch.php?pkg=rust-num-prime&arch=amd64&ver=0.4.4-2%2Bb1&stamp=1776894474&raw=0
for details.

It didin't fail on other arches, so this could be flaky tests.

cheers
-- 
Sebastian Ramacher