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# error kind ExecutionFailed
# pre-build errors command failed: exit status: 101
# rustc version rustc 1.98.0-nightly (cced03bfd 2026-05-28)
# docs.rs version docsrs 0.0.0 (f16e33f3e6ac9fc9e4413728c5dd1b2ba1c6b799 2026-05-23 )
# build log [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "DOCS_RS=1" "-w" "/opt/rustwide/workdir" "--user" "1001:1001" "231d04020a0e1be73bd7a1673f2cf2fa13fcf32d11941edeaa730c053900bc74" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "rustdoc" "--lib" "-Zrustdoc-map" "--all-features" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--emit=invocation-specific\", \"--resource-suffix\", \"-20260528-1.98.0-nightly-cced03bfd\", \"--static-root-path\", \"/-/rustdoc.static/\", \"--cap-lints\", \"warn\", \"--extern-html-root-takes-precedence\"]" "--offline" "-Zunstable-options" "--config=doc.extern-map.registries.crates-io=\"https://docs.rs/{pkg_name}/{version}/x86_64-unknown-linux-gnu\"" "-Zrustdoc-scrape-examples" "-j6" "--target" "x86_64-unknown-linux-gnu", kill_on_drop: false }` [INFO] [stderr] warning: Rustdoc did not scrape the following examples because they require dev-dependencies: bbc_news_clustering, cluster_in_memory, fashion_mnist_clustering, news_clustering, user_clustering [INFO] [stderr] If you want Rustdoc to scrape these examples, then add `doc-scrape-examples = true` [INFO] [stderr] to the [[example]] target configuration of at least one example. [INFO] [stderr] warning: target filter specified, but no targets matched; this is a no-op [INFO] [stderr] Compiling rlx-mlx-sys v0.2.1 [INFO] [stderr] error: failed to run custom build command for `rlx-mlx-sys v0.2.1` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/rlx-mlx-sys-c6248ead9bd37dd6/build-script-build` (exit status: 101) [INFO] [stderr] --- stdout [INFO] [stderr] CMAKE_TOOLCHAIN_FILE_x86_64-unknown-linux-gnu = None [INFO] [stderr] CMAKE_TOOLCHAIN_FILE_x86_64_unknown_linux_gnu = None [INFO] [stderr] HOST_CMAKE_TOOLCHAIN_FILE = None [INFO] [stderr] CMAKE_TOOLCHAIN_FILE = None [INFO] [stderr] CMAKE_GENERATOR_x86_64-unknown-linux-gnu = None [INFO] [stderr] CMAKE_GENERATOR_x86_64_unknown_linux_gnu = None [INFO] [stderr] HOST_CMAKE_GENERATOR = None [INFO] [stderr] CMAKE_GENERATOR = None [INFO] [stderr] CMAKE_PREFIX_PATH_x86_64-unknown-linux-gnu = None [INFO] [stderr] CMAKE_PREFIX_PATH_x86_64_unknown_linux_gnu = None [INFO] [stderr] HOST_CMAKE_PREFIX_PATH = None [INFO] [stderr] CMAKE_PREFIX_PATH = None [INFO] [stderr] CMAKE_x86_64-unknown-linux-gnu = None [INFO] [stderr] CMAKE_x86_64_unknown_linux_gnu = None [INFO] [stderr] HOST_CMAKE = None [INFO] [stderr] CMAKE = None [INFO] [stderr] -- Building MLX for x86_64 processor on Linux [INFO] [stderr] -- Accelerate not found, using default backend. [INFO] [stderr] -- Lapack lib /usr/lib/x86_64-linux-gnu/libopenblas.so-lm-ldl [INFO] [stderr] -- Lapack include /usr/include [INFO] [stderr] -- Blas lib /usr/lib/x86_64-linux-gnu/libopenblas.so [INFO] [stderr] -- Blas include /usr/include/x86_64-linux-gnu [INFO] [stderr] -- Downloading json [INFO] [stderr] -- Configuring incomplete, errors occurred! [INFO] [stderr] [INFO] [stderr] --- stderr [INFO] [stderr] running: cd "/opt/rustwide/target/x86_64-unknown-linux-gnu/debug/build/rlx-mlx-sys-9a4a0b9a22af7306/out/build" && CMAKE_PREFIX_PATH="" LC_ALL="C" "cmake" "/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rlx-mlx-sys-0.2.1/vendor/mlx" "-B" "/opt/rustwide/target/x86_64-unknown-linux-gnu/debug/build/rlx-mlx-sys-9a4a0b9a22af7306/out/build" "-DMLX_BUILD_TESTS=OFF" "-DMLX_BUILD_EXAMPLES=OFF" "-DMLX_BUILD_BENCHMARKS=OFF" "-DMLX_BUILD_PYTHON_BINDINGS=OFF" "-DMLX_BUILD_PYTHON_STUBS=OFF" "-DMLX_BUILD_METAL=OFF" "-DMLX_BUILD_CPU=ON" "-DMLX_BUILD_GGUF=OFF" "-DMLX_BUILD_SAFETENSORS=OFF" "-DBUILD_SHARED_LIBS=OFF" "-DCMAKE_BUILD_TYPE=Release" "-DCMAKE_INSTALL_PREFIX=/opt/rustwide/target/x86_64-unknown-linux-gnu/debug/build/rlx-mlx-sys-9a4a0b9a22af7306/out" "-DCMAKE_C_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64 -w" "-DCMAKE_C_COMPILER=/usr/bin/cc" "-DCMAKE_CXX_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64 -w" "-DCMAKE_CXX_COMPILER=/usr/bin/c++" "-DCMAKE_ASM_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64 -w" "-DCMAKE_ASM_COMPILER=/usr/bin/cc" [INFO] [stderr] [ 11%] Performing download step (download, verify and extract) for 'json-populate' [INFO] [stderr] -- File already exists but no hash specified (use URL_HASH): [INFO] [stderr] file='/opt/rustwide/target/x86_64-unknown-linux-gnu/debug/build/rlx-mlx-sys-9a4a0b9a22af7306/out/build/_deps/json-subbuild/json-populate-prefix/src/json.tar.xz' [INFO] [stderr] Old file will be removed and new file downloaded from URL. [INFO] [stderr] -- Downloading... [INFO] [stderr] dst='/opt/rustwide/target/x86_64-unknown-linux-gnu/debug/build/rlx-mlx-sys-9a4a0b9a22af7306/out/build/_deps/json-subbuild/json-populate-prefix/src/json.tar.xz' [INFO] [stderr] timeout='none' [INFO] [stderr] inactivity timeout='none' [INFO] [stderr] -- Using src='https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz' [INFO] [stderr] -- Retrying... [INFO] [stderr] -- Using src='https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz' [INFO] [stderr] -- Retry after 5 seconds (attempt #2) ... [INFO] [stderr] -- Using src='https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz' [INFO] [stderr] -- Retry after 5 seconds (attempt #3) ... [INFO] [stderr] -- Using src='https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz' [INFO] [stderr] -- Retry after 15 seconds (attempt #4) ... [INFO] [stderr] -- Using src='https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz' [INFO] [stderr] -- Retry after 60 seconds (attempt #5) ... [INFO] [stderr] -- Using src='https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz' [INFO] [stderr] CMake Error at json-subbuild/json-populate-prefix/src/json-populate-stamp/download-json-populate.cmake:170 (message): [INFO] [stderr] Each download failed! [INFO] [stderr] [INFO] [stderr] error: downloading 'https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz' failed [INFO] [stderr] status_code: 6 [INFO] [stderr] status_string: "Couldn't resolve host name" [INFO] [stderr] log: [INFO] [stderr] --- LOG BEGIN --- [INFO] [stderr] Could not resolve host: github.com [INFO] [stderr] [INFO] [stderr] Closing connection [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] --- LOG END --- [INFO] [stderr] error: downloading 'https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz' failed [INFO] [stderr] status_code: 6 [INFO] [stderr] status_string: "Couldn't resolve host name" [INFO] [stderr] log: [INFO] [stderr] --- LOG BEGIN --- [INFO] [stderr] Could not resolve host: github.com [INFO] [stderr] [INFO] [stderr] Closing connection [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] --- LOG END --- [INFO] [stderr] error: downloading 'https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz' failed [INFO] [stderr] status_code: 6 [INFO] [stderr] status_string: "Couldn't resolve host name" [INFO] [stderr] log: [INFO] [stderr] --- LOG BEGIN --- [INFO] [stderr] Could not resolve host: github.com [INFO] [stderr] [INFO] [stderr] Closing connection [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] --- LOG END --- [INFO] [stderr] error: downloading 'https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz' failed [INFO] [stderr] status_code: 6 [INFO] [stderr] status_string: "Couldn't resolve host name" [INFO] [stderr] log: [INFO] [stderr] --- LOG BEGIN --- [INFO] [stderr] Could not resolve host: github.com [INFO] [stderr] [INFO] [stderr] Closing connection [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] --- LOG END --- [INFO] [stderr] error: downloading 'https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz' failed [INFO] [stderr] status_code: 6 [INFO] [stderr] status_string: "Couldn't resolve host name" [INFO] [stderr] log: [INFO] [stderr] --- LOG BEGIN --- [INFO] [stderr] Could not resolve host: github.com [INFO] [stderr] [INFO] [stderr] Closing connection [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] --- LOG END --- [INFO] [stderr] error: downloading 'https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz' failed [INFO] [stderr] status_code: 6 [INFO] [stderr] status_string: "Couldn't resolve host name" [INFO] [stderr] log: [INFO] [stderr] --- LOG BEGIN --- [INFO] [stderr] Could not resolve host: github.com [INFO] [stderr] [INFO] [stderr] Closing connection [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] --- LOG END --- [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] gmake[2]: *** [CMakeFiles/json-populate.dir/build.make:100: json-populate-prefix/src/json-populate-stamp/json-populate-download] Error 1 [INFO] [stderr] gmake[1]: *** [CMakeFiles/Makefile2:83: CMakeFiles/json-populate.dir/all] Error 2 [INFO] [stderr] gmake: *** [Makefile:91: all] Error 2 [INFO] [stderr] [INFO] [stderr] CMake Error at /usr/share/cmake-3.28/Modules/FetchContent.cmake:1679 (message): [INFO] [stderr] Build step for json failed: 2 [INFO] [stderr] Call Stack (most recent call first): [INFO] [stderr] /usr/share/cmake-3.28/Modules/FetchContent.cmake:1819:EVAL:2 (__FetchContent_directPopulate) [INFO] [stderr] /usr/share/cmake-3.28/Modules/FetchContent.cmake:1819 (cmake_language) [INFO] [stderr] /usr/share/cmake-3.28/Modules/FetchContent.cmake:2033 (FetchContent_Populate) [INFO] [stderr] CMakeLists.txt:320 (FetchContent_MakeAvailable) [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] thread 'main' (2826) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cmake-0.1.58/src/lib.rs:1132:5: [INFO] [stderr] [INFO] [stderr] command did not execute successfully, got: exit status: 1 [INFO] [stderr] [INFO] [stderr] build script failed, must exit now [INFO] [stderr] note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace [INFO] running `Command { std: "docker" "inspect" "231d04020a0e1be73bd7a1673f2cf2fa13fcf32d11941edeaa730c053900bc74", kill_on_drop: false }`