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# error kind ExecutionFailed
# pre-build errors command failed: exit status: 101
# rustc version rustc 1.97.0-nightly (e96c36b6f 2026-05-21)
# docs.rs version docsrs 0.0.0 (e50152ed411bb913753b1dfd203f22cb8711f097 2026-05-17 )
# 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" "f6c9677605f464ebde35c0fba0ad90227d142f0278113abf3ad44d56455fb82f" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "rustdoc" "--lib" "-Zrustdoc-map" "--all-features" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"--html-in-header\", \"doc/katex-header.html\", \"-Z\", \"unstable-options\", \"--emit=invocation-specific\", \"--resource-suffix\", \"-20260521-1.97.0-nightly-e96c36b6f\", \"--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 decorum v0.4.0 (/opt/rustwide/workdir) [INFO] [stderr] error[E0277]: the trait bound `expression::Expression<core::convert::Infallible, E>: core::ops::Residual<T>` is not satisfied [INFO] [stderr] --> src/expression.rs:608:21 [INFO] [stderr] | [INFO] [stderr] 608 | type Residual = Expression<Infallible, E>; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound [INFO] [stderr] | [INFO] [stderr] help: the nightly-only, unstable trait `core::ops::Residual<T>` is not implemented for `expression::Expression<core::convert::Infallible, E>` [INFO] [stderr] --> src/expression.rs:135:1 [INFO] [stderr] | [INFO] [stderr] 135 | pub enum Expression<T, E = ()> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] help: the following other types implement trait `core::ops::Residual<O>` [INFO] [stderr] --> /rustc/e96c36b6f76833388c519561d145492d2c08db4e/library/core/src/option.rs:2807:0 [INFO] [stderr] | [INFO] [stderr] = note: `core::option::Option<core::convert::Infallible>` [INFO] [stderr] --> /rustc/e96c36b6f76833388c519561d145492d2c08db4e/library/core/src/result.rs:2205:0 [INFO] [stderr] | [INFO] [stderr] = note: `core::result::Result<core::convert::Infallible, E>` [INFO] [stderr] note: required by a bound in `core::ops::Try::Residual` [INFO] [stderr] --> /rustc/e96c36b6f76833388c519561d145492d2c08db4e/library/core/src/ops/try_trait.rs:160:4 [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0277`. [INFO] [stderr] error: could not document `decorum` [INFO] running `Command { std: "docker" "inspect" "f6c9677605f464ebde35c0fba0ad90227d142f0278113abf3ad44d56455fb82f", kill_on_drop: false }`