# Equivalent mutants — tokenkit (cargo-mutants --all-features, 2026-09-07)
#
# Survivors triaged as EQUIVALENT/unviable-in-suite. Baseline: 32 mutants,
# 6 unviable, 25/26 viable killed (96.2%).
src/service.rs:296:9: replace JwtService::decoding_key -> Result<DecodingKey, JwtError> with Ok(Default::default())
Rationale: cfg-phantom under --all-features. `decoding_key` is
`#[cfg(not(feature = "rotation"))]`; with rotation enabled (as
--all-features does) neither the function nor the mutant body is
compiled, so the mutant binary is bit-identical to the original and no
test in this suite can distinguish it. Not killable here; a
--no-default-features second pass (rotation off) would exercise it, as
queued for the validkit fallback branches in MUTATION.md.