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# error kind ExecutionFailed
# pre-build errors command failed: exit status: 101
# rustc version rustc 1.95.0-nightly (1ed488274 2026-02-25)
# docs.rs version docsrs 0.0.0 (91dcccd9 2026-02-13 )
# build log [INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace/builds/ext-0.0.3/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace/builds/ext-0.0.3/source:/opt/rustwide/workdir:ro,Z" "-v" "/home/cratesfyi/workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/home/cratesfyi/workspace/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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/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\", \"-20260225-1.95.0-nightly-1ed488274\", \"--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: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] b74c1e12ca5783e66d0fd16792fad17cfdc55da750bad60484f51d993629a3e7 [INFO] running `Command { std: "docker" "start" "-a" "b74c1e12ca5783e66d0fd16792fad17cfdc55da750bad60484f51d993629a3e7", kill_on_drop: false }` [INFO] [stderr] warning: target filter specified, but no targets matched; this is a no-op [INFO] [stderr] Documenting ext v0.0.3 (/opt/rustwide/workdir) [INFO] [stderr] error[E0603]: trait import `FnOnceExt` is private [INFO] [stderr] --> src/standard/asynchronies/tokio.rs:1:36 [INFO] [stderr] | [INFO] [stderr] 1 | use crate::no_std::functions::ext::FnOnceExt; [INFO] [stderr] | ^^^^^^^^^ private trait import [INFO] [stderr] | [INFO] [stderr] note: the trait import `FnOnceExt` is defined here... [INFO] [stderr] --> src/no_std/functions/ext.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | functions::ext::fn_once_ext::FnOnceExt, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] note: ...and refers to the trait `FnOnceExt` which is defined here [INFO] [stderr] --> src/no_std/functions/ext.rs:746:5 [INFO] [stderr] | [INFO] [stderr] 746 | pub trait FnOnceExt<T, U, R> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ you could import this directly [INFO] [stderr] help: import `FnOnceExt` directly [INFO] [stderr] | [INFO] [stderr] 1 - use crate::no_std::functions::ext::FnOnceExt; [INFO] [stderr] 1 + use no_std::functions::ext::fn_once_ext::FnOnceExt; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unexpected `cfg` condition value: `proc` [INFO] [stderr] --> src/no_std/macros/mod.rs:3:7 [INFO] [stderr] | [INFO] [stderr] 3 | #[cfg(feature = "proc")] [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: expected values for `feature` are: `async`, `default`, `full`, `minstant`, `paral`, `rayon`, `std`, and `tokio` [INFO] [stderr] = help: consider adding `proc` as a feature in `Cargo.toml` [INFO] [stderr] = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration [INFO] [stderr] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0603`. [INFO] [stderr] warning: `ext` (lib doc) generated 1 warning [INFO] [stderr] error: could not document `ext` [INFO] running `Command { std: "docker" "inspect" "b74c1e12ca5783e66d0fd16792fad17cfdc55da750bad60484f51d993629a3e7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b74c1e12ca5783e66d0fd16792fad17cfdc55da750bad60484f51d993629a3e7", kill_on_drop: false }` [INFO] [stdout] b74c1e12ca5783e66d0fd16792fad17cfdc55da750bad60484f51d993629a3e7