these 3 derivations will be built:
  /nix/store/clprz153jp8f8br5bqw71ylljcsnlyl3-iets-fuzz-diff-0.0.0.drv
  /nix/store/r4gwhg1v138izn06wj468yj2xiwjavbg-iets-fuzzers-0.0.0.drv
  /nix/store/7rnw1rgqhn12q79zmmh0169fk8hy6rsv-iets-fuzz-nar-check.drv
building '/nix/store/r4gwhg1v138izn06wj468yj2xiwjavbg-iets-fuzzers-0.0.0.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=20&system=aarch64-linux'
building '/nix/store/clprz153jp8f8br5bqw71ylljcsnlyl3-iets-fuzz-diff-0.0.0.drv' on 'grpc://farm.numtide.com:50051?client-cert=/run/secrets/vars/per-machine/bld1/nix-farm-ci/crt&client-key=/run/secrets/vars/per-machine/bld1/nix-farm-ci/key&connect-timeout=23&system=aarch64-linux'
building '/nix/store/r4gwhg1v138izn06wj468yj2xiwjavbg-iets-fuzzers-0.0.0.drv' on farm.numtide.com:50051
iets-fuzzers-0.0.0> elastic-arm-e65ee682: building r4gwhg1v138izn06wj468yj2xiwjavbg-iets-fuzzers-0.0.0.drv
iets-fuzzers-0.0.0> Running phase: unpackPhase
iets-fuzzers-0.0.0> unpacking source archive /nix/store/h71gfidi8sx3y23ii2khnikdlwdxbac8-source
iets-fuzzers-0.0.0> source root is source
iets-fuzzers-0.0.0> Running phase: patchPhase
iets-fuzzers-0.0.0> moving Cargo.lock to Cargo.lock.orig, then will use /nix/store/q2jq5fyhj4h5x0q0a8s2rw84j9y6syan-Cargo.lock as Cargo.lock
iets-fuzzers-0.0.0> Executing configureCargoCommonVars
iets-fuzzers-0.0.0> decompressing cargo artifacts from /nix/store/bjfckis6fvkm1d50hym1q01y8ka9zpqv-iets-fuzzers-deps-0.0.0/target.tar.zst to target
iets-fuzzers-0.0.0> Running phase: updateAutotoolsGnuConfigScriptsPhase
iets-fuzzers-0.0.0> Running phase: configurePhase
iets-fuzzers-0.0.0> will append /build/source/fuzz/.cargo-home/config.toml with contents of /nix/store/61661qdvhb7f756fx8sk67s8j7bcq03v-vendor-cargo-deps/config.toml
iets-fuzzers-0.0.0> default configurePhase, nothing to do
iets-fuzzers-0.0.0> Running phase: buildPhase
iets-fuzzers-0.0.0> +++ command cargo --version
iets-fuzzers-0.0.0> cargo 1.98.0 (797e8a9bc 2026-08-05)
iets-fuzzers-0.0.0> +++ command cargo build --target aarch64-unknown-linux-gnu --release --config 'profile.release.debug="line-tables-only"' --bin drv-eval --bin drv-gen --bin drv-read --bin eval --bin nar-gen --bin nar-read --bin nar-tree --bin parse --bin wire
iets-fuzzers-0.0.0>    Compiling iets v0.2.0 (/build/source)
building '/nix/store/clprz153jp8f8br5bqw71ylljcsnlyl3-iets-fuzz-diff-0.0.0.drv' on farm.numtide.com:50051
iets-fuzz-diff-0.0.0> elastic-arm-e65ee682: building clprz153jp8f8br5bqw71ylljcsnlyl3-iets-fuzz-diff-0.0.0.drv
iets-fuzz-diff-0.0.0> Running phase: unpackPhase
iets-fuzz-diff-0.0.0> unpacking source archive /nix/store/h71gfidi8sx3y23ii2khnikdlwdxbac8-source
iets-fuzz-diff-0.0.0> source root is source
iets-fuzz-diff-0.0.0> Running phase: patchPhase
iets-fuzz-diff-0.0.0> moving Cargo.lock to Cargo.lock.orig, then will use /nix/store/q2jq5fyhj4h5x0q0a8s2rw84j9y6syan-Cargo.lock as Cargo.lock
iets-fuzz-diff-0.0.0> Executing configureCargoCommonVars
iets-fuzz-diff-0.0.0> decompressing cargo artifacts from /nix/store/vdbanwnl9ql7pmlbpj12j08k9dlbk7x1-iets-fuzz-diff-deps-0.0.0/target.tar.zst to target
iets-fuzz-diff-0.0.0> Running phase: updateAutotoolsGnuConfigScriptsPhase
iets-fuzz-diff-0.0.0> Running phase: configurePhase
iets-fuzz-diff-0.0.0> will append /build/source/fuzz/.cargo-home/config.toml with contents of /nix/store/61661qdvhb7f756fx8sk67s8j7bcq03v-vendor-cargo-deps/config.toml
iets-fuzz-diff-0.0.0> default configurePhase, nothing to do
iets-fuzz-diff-0.0.0> Running phase: buildPhase
iets-fuzz-diff-0.0.0> +++ command cargo --version
iets-fuzz-diff-0.0.0> cargo 1.98.0 (797e8a9bc 2026-08-05)
iets-fuzz-diff-0.0.0> +++ command cargo build --release --message-format json-render-diagnostics --locked --bin fuzz-diff --bin conformance-adapter
iets-fuzz-diff-0.0.0>    Compiling iets v0.2.0 (/build/source)
iets-fuzzers-0.0.0>    Compiling iets-fuzz v0.0.0 (/build/source/fuzz)
iets-fuzz-diff-0.0.0>    Compiling iets-fuzz v0.0.0 (/build/source/fuzz)
iets-fuzz-diff-0.0.0>     Finished `release` profile [optimized] target(s) in 1m 56s
iets-fuzz-diff-0.0.0> searching for bins/libs to install from cargo build log at cargoBuildLogKY75.json
iets-fuzz-diff-0.0.0> installing /build/source/fuzz/target/release/conformance-adapter in postBuildInstallFromCargoBuildLogOutTempUCz/bin
iets-fuzz-diff-0.0.0> installing /build/source/fuzz/target/release/fuzz-diff in postBuildInstallFromCargoBuildLogOutTempUCz/bin
iets-fuzz-diff-0.0.0> searching for bins/libs complete
iets-fuzz-diff-0.0.0> buildPhase completed in 1 minutes 57 seconds
iets-fuzz-diff-0.0.0> Running phase: installPhase
iets-fuzz-diff-0.0.0> actually installing contents of postBuildInstallFromCargoBuildLogOutTempUCz to /nix/store/lzh6wdjjjlsj569h2wv0vzflkynsmbnr-iets-fuzz-diff-0.0.0
iets-fuzz-diff-0.0.0> stripping references to Rust toolchain
iets-fuzz-diff-0.0.0> Rust toolchain at: /nix/store/ajnghkwrznnkzq36mnm2j78l67f6d8ry-rustc-1.98.1
iets-fuzz-diff-0.0.0> stripping Rust toolchain references done
iets-fuzz-diff-0.0.0> stripping references to cargoVendorDir from:
iets-fuzz-diff-0.0.0> /nix/store/lzh6wdjjjlsj569h2wv0vzflkynsmbnr-iets-fuzz-diff-0.0.0/bin/conformance-adapter
iets-fuzz-diff-0.0.0> /nix/store/lzh6wdjjjlsj569h2wv0vzflkynsmbnr-iets-fuzz-diff-0.0.0/bin/fuzz-diff
iets-fuzz-diff-0.0.0> stripping references done
iets-fuzz-diff-0.0.0> Running phase: fixupPhase
iets-fuzz-diff-0.0.0> shrinking RPATHs of ELF executables and libraries in /nix/store/lzh6wdjjjlsj569h2wv0vzflkynsmbnr-iets-fuzz-diff-0.0.0
iets-fuzz-diff-0.0.0> shrinking /nix/store/lzh6wdjjjlsj569h2wv0vzflkynsmbnr-iets-fuzz-diff-0.0.0/bin/fuzz-diff
iets-fuzz-diff-0.0.0> shrinking /nix/store/lzh6wdjjjlsj569h2wv0vzflkynsmbnr-iets-fuzz-diff-0.0.0/bin/conformance-adapter
iets-fuzz-diff-0.0.0> checking for references to /build/ in /nix/store/lzh6wdjjjlsj569h2wv0vzflkynsmbnr-iets-fuzz-diff-0.0.0...
iets-fuzz-diff-0.0.0> patching script interpreter paths in /nix/store/lzh6wdjjjlsj569h2wv0vzflkynsmbnr-iets-fuzz-diff-0.0.0
iets-fuzz-diff-0.0.0> stripping (with command strip and flags -S -p) in /nix/store/lzh6wdjjjlsj569h2wv0vzflkynsmbnr-iets-fuzz-diff-0.0.0/bin
iets-fuzzers-0.0.0>     Finished `release` profile [optimized + debuginfo] target(s) in 6m 02s
iets-fuzzers-0.0.0> buildPhase completed in 6 minutes 3 seconds
iets-fuzzers-0.0.0> Running phase: installPhase
iets-fuzzers-0.0.0> linking previous artifacts /nix/store/bjfckis6fvkm1d50hym1q01y8ka9zpqv-iets-fuzzers-deps-0.0.0/target.tar.zst to /nix/store/b7505p3w4fa7knsrfgrk314iyzcgmjng-iets-fuzzers-0.0.0/target.tar.zst
iets-fuzzers-0.0.0> /*stdin*\            : 23.41%   (  1.10 GiB =>    263 MiB, /nix/store/b7505p3w4fa7knsrfgrk314iyzcgmjng-iets-fuzzers-0.0.0/target.tar.zst) 
could not copy /nix/store/b7505p3w4fa7knsrfgrk314iyzcgmjng-iets-fuzzers-0.0.0: error: gRPC FetchNars failed: Stream removed (sendmsg: Broken pipe (32))
error: some outputs are unexpectedly invalid