# rustc version rustc 1.96.0-nightly (80282b130 2026-03-06)
# docs.rs version docsrs 0.0.0 (3c601d69 2026-03-07 )
# build log [INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace-builder4/builds/tcpp-0.1.0/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace-builder4/builds/tcpp-0.1.0/source:/opt/rustwide/workdir:ro,Z" "-v" "/home/cratesfyi/workspace-builder4/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/home/cratesfyi/workspace-builder4/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "DOCS_RS=1" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "6442450944" "--cpus" "6" "--user" "1001:1001" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--output-format\", \"json\", \"--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}/aarch64-unknown-linux-gnu\"" "-Zrustdoc-scrape-examples" "-j6" "--target" "aarch64-unknown-linux-gnu", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 290a0d6554297f563114d1e5fa17b7f8c37ea170ea2c4ecf48cb3367807dce36 [INFO] running `Command { std: "docker" "start" "-a" "290a0d6554297f563114d1e5fa17b7f8c37ea170ea2c4ecf48cb3367807dce36", kill_on_drop: false }` [INFO] [stderr] warning: target filter specified, but no targets matched; this is a no-op [INFO] [stderr] Compiling tcpp v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking libc v0.2.182 [INFO] [stderr] warning: tcpp@0.1.0: Compiler family detection failed due to error: ToolNotFound: failed to find tool "aarch64-linux-gnu-g++": No such file or directory (os error 2) [INFO] [stderr] warning: tcpp@0.1.0: Compiler family detection failed due to error: ToolNotFound: failed to find tool "aarch64-linux-gnu-g++": No such file or directory (os error 2) [INFO] [stderr] error: failed to run custom build command for `tcpp v0.1.0 (/opt/rustwide/workdir)` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/tcpp-1941b0e0f448d7f2/build-script-build` (exit status: 1) [INFO] [stderr] --- stdout [INFO] [stderr] OUT_DIR = Some(/opt/rustwide/target/aarch64-unknown-linux-gnu/debug/build/tcpp-1593ff63149d02b2/out) [INFO] [stderr] OPT_LEVEL = Some(0) [INFO] [stderr] TARGET = Some(aarch64-unknown-linux-gnu) [INFO] [stderr] CARGO_ENCODED_RUSTFLAGS = Some() [INFO] [stderr] HOST = Some(x86_64-unknown-linux-gnu) [INFO] [stderr] cargo:rerun-if-env-changed=CXX_aarch64-unknown-linux-gnu [INFO] [stderr] CXX_aarch64-unknown-linux-gnu = None [INFO] [stderr] cargo:rerun-if-env-changed=CXX_aarch64_unknown_linux_gnu [INFO] [stderr] CXX_aarch64_unknown_linux_gnu = None [INFO] [stderr] cargo:rerun-if-env-changed=TARGET_CXX [INFO] [stderr] TARGET_CXX = None [INFO] [stderr] cargo:rerun-if-env-changed=CXX [INFO] [stderr] CXX = None [INFO] [stderr] cargo:rerun-if-env-changed=CROSS_COMPILE [INFO] [stderr] CROSS_COMPILE = None [INFO] [stderr] RUSTC_LINKER = None [INFO] [stderr] cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT [INFO] [stderr] cargo:warning=Compiler family detection failed due to error: ToolNotFound: failed to find tool "aarch64-linux-gnu-g++": No such file or directory (os error 2) [INFO] [stderr] RUSTC_WRAPPER = None [INFO] [stderr] cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS [INFO] [stderr] CRATE_CC_NO_DEFAULTS = None [INFO] [stderr] DEBUG = Some(true) [INFO] [stderr] CARGO_CFG_TARGET_FEATURE = Some(neon,outline-atomics) [INFO] [stderr] cargo:rerun-if-env-changed=CXXFLAGS [INFO] [stderr] CXXFLAGS = None [INFO] [stderr] cargo:rerun-if-env-changed=TARGET_CXXFLAGS [INFO] [stderr] TARGET_CXXFLAGS = None [INFO] [stderr] cargo:rerun-if-env-changed=CXXFLAGS_aarch64_unknown_linux_gnu [INFO] [stderr] CXXFLAGS_aarch64_unknown_linux_gnu = None [INFO] [stderr] cargo:rerun-if-env-changed=CXXFLAGS_aarch64-unknown-linux-gnu [INFO] [stderr] CXXFLAGS_aarch64-unknown-linux-gnu = None [INFO] [stderr] OUT_DIR = Some(/opt/rustwide/target/aarch64-unknown-linux-gnu/debug/build/tcpp-1593ff63149d02b2/out) [INFO] [stderr] cargo:rerun-if-env-changed=CC_ENABLE_DEBUG_OUTPUT [INFO] [stderr] cargo:warning=Compiler family detection failed due to error: ToolNotFound: failed to find tool "aarch64-linux-gnu-g++": No such file or directory (os error 2) [INFO] [stderr] cargo:rerun-if-env-changed=CRATE_CC_NO_DEFAULTS [INFO] [stderr] CRATE_CC_NO_DEFAULTS = None [INFO] [stderr] TARGET = Some(aarch64-unknown-linux-gnu) [INFO] [stderr] CARGO_CFG_TARGET_FEATURE = Some(neon,outline-atomics) [INFO] [stderr] HOST = Some(x86_64-unknown-linux-gnu) [INFO] [stderr] cargo:rerun-if-env-changed=CXXFLAGS [INFO] [stderr] CXXFLAGS = None [INFO] [stderr] cargo:rerun-if-env-changed=TARGET_CXXFLAGS [INFO] [stderr] TARGET_CXXFLAGS = None [INFO] [stderr] cargo:rerun-if-env-changed=CXXFLAGS_aarch64_unknown_linux_gnu [INFO] [stderr] CXXFLAGS_aarch64_unknown_linux_gnu = None [INFO] [stderr] cargo:rerun-if-env-changed=CXXFLAGS_aarch64-unknown-linux-gnu [INFO] [stderr] CXXFLAGS_aarch64-unknown-linux-gnu = None [INFO] [stderr] [INFO] [stderr] --- stderr [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] error occurred in cc-rs: failed to find tool "aarch64-linux-gnu-g++": No such file or directory (os error 2) [INFO] [stderr] [INFO] [stderr] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "290a0d6554297f563114d1e5fa17b7f8c37ea170ea2c4ecf48cb3367807dce36", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "290a0d6554297f563114d1e5fa17b7f8c37ea170ea2c4ecf48cb3367807dce36", kill_on_drop: false }` [INFO] [stdout] 290a0d6554297f563114d1e5fa17b7f8c37ea170ea2c4ecf48cb3367807dce36