# rustc version rustc 1.96.0-nightly (e370b60cf 2026-03-07)
# docs.rs version docsrs 0.0.0 (3c601d69 2026-03-07 )
# build log [INFO] running `Command { std: "docker" "create" "-v" "/home/cratesfyi/workspace-builder/builds/user-error-1.2.8/target:/opt/rustwide/target:rw,Z" "-v" "/home/cratesfyi/workspace-builder/builds/user-error-1.2.8/source:/opt/rustwide/workdir:ro,Z" "-v" "/home/cratesfyi/workspace-builder/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/home/cratesfyi/workspace-builder/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\", \"--emit=invocation-specific\", \"--resource-suffix\", \"-20260307-1.96.0-nightly-e370b60cf\", \"--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] 6df6d06e309a243df80626a996edec9180b051bd78719ed411327e71b745a23d [INFO] running `Command { std: "docker" "start" "-a" "6df6d06e309a243df80626a996edec9180b051bd78719ed411327e71b745a23d", kill_on_drop: false }` [INFO] [stderr] warning: target filter specified, but no targets matched; this is a no-op [INFO] [stderr] Documenting user-error v1.2.8 (/opt/rustwide/workdir) [INFO] [stderr] warning: unnecessary parentheses around type [INFO] [stderr] --> src/lib.rs:212:26 [INFO] [stderr] | [INFO] [stderr] 212 | type Source = Option<Box<(dyn Error)>>; [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] 212 - type Source = Option<Box<(dyn Error)>>; [INFO] [stderr] 212 + type Source = Option<Box<dyn Error>>; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around type [INFO] [stderr] --> src/lib.rs:276:35 [INFO] [stderr] | [INFO] [stderr] 276 | fn get_ufe_struct_members(error: &(dyn Error)) -> (Summary, Reasons) { [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 276 - fn get_ufe_struct_members(error: &(dyn Error)) -> (Summary, Reasons) { [INFO] [stderr] 276 + fn get_ufe_struct_members(error: &dyn Error) -> (Summary, Reasons) { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around type [INFO] [stderr] --> src/lib.rs:305:15 [INFO] [stderr] | [INFO] [stderr] 305 | impl From<Box<(dyn Error)>> for UserFacingError { [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 305 - impl From<Box<(dyn Error)>> for UserFacingError { [INFO] [stderr] 305 + impl From<Box<dyn Error>> for UserFacingError { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around type [INFO] [stderr] --> src/lib.rs:306:24 [INFO] [stderr] | [INFO] [stderr] 306 | fn from(error: Box<(dyn Error)>) -> UserFacingError { [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 306 - fn from(error: Box<(dyn Error)>) -> UserFacingError { [INFO] [stderr] 306 + fn from(error: Box<dyn Error>) -> UserFacingError { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around type [INFO] [stderr] --> src/lib.rs:322:12 [INFO] [stderr] | [INFO] [stderr] 322 | impl From<&(dyn Error)> for UserFacingError { [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 322 - impl From<&(dyn Error)> for UserFacingError { [INFO] [stderr] 322 + impl From<&dyn Error> for UserFacingError { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around type [INFO] [stderr] --> src/lib.rs:323:21 [INFO] [stderr] | [INFO] [stderr] 323 | fn from(error: &(dyn Error)) -> UserFacingError { [INFO] [stderr] | ^ ^ [INFO] [stderr] | [INFO] [stderr] help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] 323 - fn from(error: &(dyn Error)) -> UserFacingError { [INFO] [stderr] 323 + fn from(error: &dyn Error) -> UserFacingError { [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: `user-error` (lib doc) generated 6 warnings (run `cargo fix --lib -p user-error` to apply 6 suggestions) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s [INFO] [stderr] Generated /opt/rustwide/target/x86_64-unknown-linux-gnu/doc/user_error/index.html [INFO] running `Command { std: "docker" "inspect" "6df6d06e309a243df80626a996edec9180b051bd78719ed411327e71b745a23d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6df6d06e309a243df80626a996edec9180b051bd78719ed411327e71b745a23d", kill_on_drop: false }` [INFO] [stdout] 6df6d06e309a243df80626a996edec9180b051bd78719ed411327e71b745a23d