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# error kind ExecutionFailed
# pre-build errors command failed: exit status: 101
# rustc version rustc 1.99.0-nightly (da80ed070 2026-07-14)
# docs.rs version docsrs 0.0.0 (964c90a45859fd8f9076e3cbe58470a5a4f4d4f7 2026-07-01 )
# 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" "25a1c7e3fc6157d0b947699c8abea20c15a6e6d3f2e693b3797abaf0d46519e4" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--emit=invocation-specific\", \"--resource-suffix\", \"-20260714-1.99.0-nightly-da80ed070\", \"--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] Compiling devise_core v0.2.1 [INFO] [stderr] Checking aes-gcm v0.8.0 [INFO] [stderr] Checking httparse v1.10.1 [INFO] [stderr] Checking unicase v1.4.2 [INFO] [stderr] Checking mime v0.2.6 [INFO] [stderr] Checking rand v0.8.7 [INFO] [stderr] error: cannot find macro `concat_idents` in this scope [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/devise_core-0.2.1/src/generator.rs:29:39 [INFO] [stderr] | [INFO] [stderr] 29 | $(self.$vec.push(Box::new(concat_idents!(default_, $get_f)));)* [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] ... [INFO] [stderr] 193 | / mappers! { [INFO] [stderr] 194 | | (map_struct, try_map_struct, struct_mapper): Struct, struct_mappers, [INFO] [stderr] 195 | | (map_enum, try_map_enum, enum_mapper): Enum, enum_mappers, [INFO] [stderr] 196 | | (map_variant, try_map_variant, variant_mapper): Variant, variant_mappers, [INFO] [stderr] 197 | | (map_fields, try_map_fields, fields_mapper): Fields, fields_mappers, [INFO] [stderr] 198 | | (map_field, try_map_field, field_mapper): Field, field_mappers [INFO] [stderr] 199 | | } [INFO] [stderr] | |_____- in this macro invocation [INFO] [stderr] | [INFO] [stderr] = note: this error originates in the macro `mappers` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] Checking hkdf v0.10.0 [INFO] [stderr] Compiling pear v0.1.5 [INFO] [stderr] error[E0557]: feature `concat_idents` has been removed [INFO] [stderr] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/devise_core-0.2.1/src/lib.rs:2:12 [INFO] [stderr] | [INFO] [stderr] 2 | #![feature(concat_idents)] [INFO] [stderr] | ^^^^^^^^^^^^^ feature has been removed [INFO] [stderr] | [INFO] [stderr] = note: removed in 1.90.0; see <https://github.com/rust-lang/rust/issues/29599#issuecomment-2986866250> for more information [INFO] [stderr] = note: Replaced by the macro_metavar_expr_concat feature [INFO] [stderr] [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Checking num_cpus v1.17.0 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Compiling rocket_codegen v0.4.11 [INFO] [stderr] Checking hashbrown v0.12.3 [INFO] [stderr] For more information about this error, try `rustc --explain E0557`. [INFO] [stderr] error: could not compile `devise_core` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "25a1c7e3fc6157d0b947699c8abea20c15a6e6d3f2e693b3797abaf0d46519e4", kill_on_drop: false }`