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# error kind ExecutionFailed
# pre-build errors command failed: exit status: 101
# rustc version rustc 1.99.0-nightly (d0babd8b6 2026-07-15)
# docs.rs version docsrs 0.0.0 (f1b150f0cd76f7cabcd39e1f4790ba771b28b5c4 2026-07-19 )
# 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" "d16ff37982b9e01033de0b4999adff63fe7e175281528afac38c27f7cd85dd72" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2026-07-16" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--emit=html-non-static-files\", \"--resource-suffix\", \"-20260715-1.99.0-nightly-d0babd8b6\", \"--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: target filter specified, but no targets matched; this is a no-op [INFO] [stderr] Documenting emplacable v0.1.0-alpha.16 (/opt/rustwide/workdir) [INFO] [stderr] warning: unnecessary parentheses around type [INFO] [stderr] --> src/lib.rs:1252:90 [INFO] [stderr] | [INFO] [stderr] 1252 | pub type EmplacerFn<'a, T> = dyn for<'b> FnMut(Layout, <T as Pointee>::Metadata, &'b mut (dyn FnMut(*mut PhantomData<T>))) [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 1252 - pub type EmplacerFn<'a, T> = dyn for<'b> FnMut(Layout, <T as Pointee>::Metadata, &'b mut (dyn FnMut(*mut PhantomData<T>))) [INFO] [stderr] 1252 + pub type EmplacerFn<'a, T> = dyn for<'b> FnMut(Layout, <T as Pointee>::Metadata, &'b mut dyn FnMut(*mut PhantomData<T>)) [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] error: cannot specialize on trait `core::marker::Copy` [INFO] [stderr] --> src/lib.rs:770:9 [INFO] [stderr] | [INFO] [stderr] 770 | impl<T: Copy> CopyToBuf for T { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: `emplacable` (lib doc) generated 1 warning [INFO] [stderr] error: could not document `emplacable` [INFO] running `Command { std: "docker" "inspect" "d16ff37982b9e01033de0b4999adff63fe7e175281528afac38c27f7cd85dd72", kill_on_drop: false }`