this derivation will be built:
  /nix/store/7mfkywkhswdr22j3f3fdq85b4cqg4ggm-iets-fmt-0.2.0.drv
warning: ignoring the client-specified setting 'store', because it is a restricted setting and you are not a trusted user
error: Cannot build '/nix/store/7mfkywkhswdr22j3f3fdq85b4cqg4ggm-iets-fmt-0.2.0.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/sq0b4451nx8gqifqaijklk03iknfs76s-iets-fmt-0.2.0
       Last 24 log lines:
       > cargoVendorDir not set, will not automatically configure vendored sources
       > cargoArtifacts not set, will not reuse any cargo artifacts
       > Running phase: unpackPhase
       > unpacking source archive /nix/store/zksp042q1blx88bvw28imbpyvscd5q1b-source
       > source root is source
       > Running phase: patchPhase
       > Executing configureCargoCommonVars
       > Running phase: updateAutotoolsGnuConfigScriptsPhase
       > Running phase: configurePhase
       > default configurePhase, nothing to do
       > Running phase: buildPhase
       > +++ command cargo --version
       > cargo 1.99.0 (5f94df478 2026-08-27)
       > +++ command cargo fmt -- --check
       > Diff in /build/source/src/eval/mod.rs:516:
       >          return Err($crate::eval::Error::boxed_fmt($kind, format_args!($($arg)*), $pos))
       >      };
       >  }
       > -pub(crate) use bail;
       >  use crate::sys;
       > +pub(crate) use bail;
       >  #[cfg(target_arch = "aarch64")]
       >  use std::arch::aarch64::{
       >      uint8x16_t, vandq_u8, vceqq_u8, vdupq_n_u8, vgetq_lane_u64, vld1q_u8, vld1q_u8_x4, vpaddq_u8,
       For full logs, run:
         nix log /nix/store/7mfkywkhswdr22j3f3fdq85b4cqg4ggm-iets-fmt-0.2.0.drv