[INFO] cloning repository https://github.com/whereistejas/magic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/whereistejas/magic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhereistejas%2Fmagic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhereistejas%2Fmagic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0279f037a113fdb93a93668c9636e96a8ae3cab5
[INFO] documenting whereistejas/magic/0279f037a113fdb93a93668c9636e96a8ae3cab5 against 1.91.0 for beta-1.92-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhereistejas%2Fmagic" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/whereistejas/magic
[INFO] finished tweaking git repo https://github.com/whereistejas/magic
[INFO] tweaked toml for git repo https://github.com/whereistejas/magic written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/whereistejas/magic on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/whereistejas/magic already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded server_fn_macro_default v0.8.3
[INFO] [stderr]   Downloaded fd-lock v4.0.4
[INFO] [stderr]   Downloaded libredox v0.1.4
[INFO] [stderr]   Downloaded spinners v4.1.1
[INFO] [stderr]   Downloaded any_spawner v0.3.0
[INFO] [stderr]   Downloaded const-str v0.6.3
[INFO] [stderr]   Downloaded collection_literals v1.0.2
[INFO] [stderr]   Downloaded leptos_config v0.8.3
[INFO] [stderr]   Downloaded toml_parser v1.0.1
[INFO] [stderr]   Downloaded leptos_hot_reload v0.8.3
[INFO] [stderr]   Downloaded camino v1.1.10
[INFO] [stderr]   Downloaded serde_qs v0.15.0
[INFO] [stderr]   Downloaded toml v0.9.2
[INFO] [stderr]   Downloaded server_fn v0.8.3
[INFO] [stderr]   Downloaded reactive_graph v0.2.3
[INFO] [stderr]   Downloaded tachys v0.2.4
[INFO] [stderr]   Downloaded llm v1.3.1
[INFO] [stderr]   Downloaded aws-lc-rs v1.13.2
[INFO] [stderr]   Downloaded rustyline v15.0.0
[INFO] [stderr]   Downloaded derive-where v1.5.0
[INFO] [stderr]   Downloaded reactive_stores v0.2.3
[INFO] [stderr]   Downloaded server_fn_macro v0.8.3
[INFO] [stderr]   Downloaded config v0.15.13
[INFO] [stderr]   Downloaded codee v0.3.2
[INFO] [stderr]   Downloaded leptos_server v0.8.3
[INFO] [stderr]   Downloaded prettyplease v0.2.35
[INFO] [stderr]   Downloaded leptos_dom v0.8.3
[INFO] [stderr]   Downloaded leptos_macro v0.8.3
[INFO] [stderr]   Downloaded reactive_stores_macro v0.2.3
[INFO] [stderr]   Downloaded cc v1.2.29
[INFO] [stderr]   Downloaded leptos v0.8.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2df13c329a43537c5c94be68f7969dc017adf8c841b028158e45143a0fa39b51
[INFO] running `Command { std: "docker" "start" "-a" "2df13c329a43537c5c94be68f7969dc017adf8c841b028158e45143a0fa39b51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2df13c329a43537c5c94be68f7969dc017adf8c841b028158e45143a0fa39b51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2df13c329a43537c5c94be68f7969dc017adf8c841b028158e45143a0fa39b51", kill_on_drop: false }`
[INFO] [stdout] 2df13c329a43537c5c94be68f7969dc017adf8c841b028158e45143a0fa39b51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2eff79723db7a8d61d19aa529305fd653e273fee072488561236efe1f058a09
[INFO] running `Command { std: "docker" "start" "-a" "d2eff79723db7a8d61d19aa529305fd653e273fee072488561236efe1f058a09", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]     Checking cfg-if v1.0.1
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]     Checking slab v0.4.10
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]     Checking bytes v1.10.1
[INFO] [stderr]    Compiling rustversion v1.0.21
[INFO] [stderr]     Checking hashbrown v0.15.4
[INFO] [stderr]     Checking equivalent v1.0.2
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.100
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling bumpalo v3.19.0
[INFO] [stderr]     Checking tracing-core v0.1.34
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]     Checking writeable v0.6.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.100
[INFO] [stderr]     Checking bitflags v2.9.1
[INFO] [stderr]     Checking litemap v0.8.0
[INFO] [stderr]    Compiling icu_properties_data v2.0.1
[INFO] [stderr]    Compiling serde_json v1.0.141
[INFO] [stderr]    Compiling icu_normalizer_data v2.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]     Checking http v1.3.1
[INFO] [stderr]     Checking indexmap v2.10.0
[INFO] [stderr]    Compiling openssl v0.10.73
[INFO] [stderr]     Checking rustls-pki-types v1.12.0
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]     Checking ipnet v2.11.0
[INFO] [stderr]     Checking openssl-probe v0.1.6
[INFO] [stderr]    Compiling unicase v2.8.1
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking iri-string v0.7.8
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling slotmap v1.0.7
[INFO] [stderr]     Checking encoding_rs v0.8.35
[INFO] [stderr]     Checking throw_error v0.3.0
[INFO] [stderr]    Compiling reactive_graph v0.2.3
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling convert_case v0.8.0
[INFO] [stderr]    Compiling server_fn_macro v0.8.3
[INFO] [stderr]     Checking send_wrapper v0.6.0
[INFO] [stderr]     Checking concurrent-queue v2.5.0
[INFO] [stderr]    Compiling jobserver v0.1.33
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling proc-macro-utils v0.10.0
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]     Checking event-listener v5.4.0
[INFO] [stderr]     Checking or_poisoned v0.1.0
[INFO] [stderr]    Compiling camino v1.1.10
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.34
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]    Compiling cc v1.2.29
[INFO] [stderr]     Checking http-body-util v0.1.3
[INFO] [stderr]     Checking event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling xxhash-rust v0.8.15
[INFO] [stderr]     Checking guardian v1.3.0
[INFO] [stderr]    Compiling aws-lc-rs v1.13.2
[INFO] [stderr]     Checking rustc-hash v2.1.1
[INFO] [stderr]     Checking async-lock v3.4.0
[INFO] [stderr]    Compiling tachys v0.2.4
[INFO] [stderr]    Compiling prettyplease v0.2.35
[INFO] [stderr]    Compiling manyhow-macros v0.11.4
[INFO] [stderr]     Checking winnow v0.7.12
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking anstyle-parse v0.2.7
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking either_of v0.1.6
[INFO] [stderr]    Compiling server_fn v0.8.3
[INFO] [stderr]     Checking next_tuple v0.1.0
[INFO] [stderr]     Checking linear-map v1.2.0
[INFO] [stderr]     Checking erased v0.1.2
[INFO] [stderr]     Checking colorchoice v1.0.4
[INFO] [stderr]     Checking yansi v1.0.1
[INFO] [stderr]     Checking const_str_slice_concat v0.1.0
[INFO] [stderr]    Compiling collection_literals v1.0.2
[INFO] [stderr]     Checking linux-raw-sys v0.9.4
[INFO] [stderr]     Checking anstyle v1.0.11
[INFO] [stderr]     Checking anstyle-query v1.1.3
[INFO] [stderr]    Compiling const_format v0.2.34
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]     Checking anstream v0.6.19
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking signal-hook-registry v1.4.5
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking dashmap v6.1.0
[INFO] [stderr]     Checking convert_case v0.6.0
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]    Compiling cmake v0.1.54
[INFO] [stderr]    Compiling leptos_macro v0.8.3
[INFO] [stderr]     Checking const-str v0.6.3
[INFO] [stderr]    Compiling rustls v0.23.29
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]     Checking clap_lex v0.7.5
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking pathdiff v0.2.3
[INFO] [stderr]     Checking clap_builder v4.5.41
[INFO] [stderr]     Checking dirs-sys v0.5.0
[INFO] [stderr]    Compiling uuid v1.17.0
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling leptos v0.8.3
[INFO] [stderr]     Checking home v0.5.11
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking unicode-width v0.2.1
[INFO] [stderr]     Checking dirs v6.0.0
[INFO] [stderr]     Checking tower-http v0.5.2
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking thread_local v1.1.9
[INFO] [stderr]    Compiling openssl-sys v0.9.109
[INFO] [stderr]    Compiling aws-lc-sys v0.30.0
[INFO] [stderr]     Checking colored v3.0.0
[INFO] [stderr]     Checking rustls-pemfile v2.2.0
[INFO] [stderr]     Checking toml_parser v1.0.1
[INFO] [stderr]     Checking fd-lock v4.0.4
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]     Checking rustyline v15.0.0
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.100
[INFO] [stderr]    Compiling proc-macro-error2 v2.0.1
[INFO] [stderr]    Compiling manyhow v0.11.4
[INFO] [stderr]     Checking strum v0.24.1
[INFO] [stderr]     Checking spinners v4.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.0
[INFO] [stderr]    Compiling zerovec-derive v0.11.1
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling async-trait v0.1.88
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking tokio v1.46.1
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.100
[INFO] [stderr]    Compiling derive-where v1.5.0
[INFO] [stderr]    Compiling syn_derive v0.2.0
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]    Compiling quote-use-macros v0.8.4
[INFO] [stderr]    Compiling reactive_stores_macro v0.2.3
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]     Checking yoke v0.8.0
[INFO] [stderr]    Compiling typed-builder-macro v0.21.0
[INFO] [stderr]    Compiling server_fn_macro_default v0.8.3
[INFO] [stderr]    Compiling quote-use v0.8.4
[INFO] [stderr]    Compiling attribute-derive-macro v0.10.3
[INFO] [stderr]     Checking zerovec v0.11.2
[INFO] [stderr]     Checking zerotrie v0.2.2
[INFO] [stderr]    Compiling clap_derive v4.5.41
[INFO] [stderr]     Checking tracing-subscriber v0.3.19
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.100
[INFO] [stderr]     Checking typed-builder v0.21.0
[INFO] [stderr]     Checking pin-project v1.1.10
[INFO] [stderr]    Compiling rstml v0.12.1
[INFO] [stderr]    Compiling attribute-derive v0.10.3
[INFO] [stderr]     Checking tinystr v0.8.1
[INFO] [stderr]     Checking potential_utf v0.1.2
[INFO] [stderr]     Checking icu_locale_core v2.0.0
[INFO] [stderr]     Checking icu_collections v2.0.0
[INFO] [stderr]     Checking js-sys v0.3.77
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking clap v4.5.41
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking axum-core v0.4.5
[INFO] [stderr]     Checking icu_provider v2.0.0
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking icu_properties v2.0.1
[INFO] [stderr]     Checking icu_normalizer v2.0.0
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking idna v1.0.3
[INFO] [stderr]     Checking url v2.5.4
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde_path_to_error v0.1.17
[INFO] [stderr]     Checking hydration_context v0.3.0
[INFO] [stderr]     Checking chrono v0.4.41
[INFO] [stderr]     Checking toml_datetime v0.7.0
[INFO] [stderr]     Checking oco_ref v0.2.0
[INFO] [stderr]     Checking serde_spanned v1.0.0
[INFO] [stderr]     Checking serde_qs v0.15.0
[INFO] [stderr]     Checking leptos_hot_reload v0.8.3
[INFO] [stderr]     Checking tokio-util v0.7.15
[INFO] [stderr]     Checking tower v0.5.2
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.50
[INFO] [stderr]     Checking web-sys v0.3.77
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking toml v0.9.2
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking any_spawner v0.3.0
[INFO] [stderr]     Checking codee v0.3.2
[INFO] [stderr]     Checking tower-http v0.6.6
[INFO] [stderr]     Checking h2 v0.4.11
[INFO] [stderr]     Checking config v0.15.13
[INFO] [stderr]     Checking leptos_config v0.8.3
[INFO] [stderr]     Checking reactive_stores v0.2.3
[INFO] [stderr]     Checking rustls-webpki v0.103.4
[INFO] [stderr]     Checking hyper v1.6.0
[INFO] [stderr]     Checking hyper-util v0.1.15
[INFO] [stderr]     Checking tokio-rustls v0.26.2
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking axum v0.7.9
[INFO] [stderr]     Checking reqwest v0.12.22
[INFO] [stderr]     Checking readwise v0.1.0 (/opt/rustwide/workdir/readwise)
[INFO] [stderr]  Documenting readwise v0.1.0 (/opt/rustwide/workdir/readwise)
[INFO] [stdout] warning: struct `DocumentCreate` is never constructed
[INFO] [stdout]    --> readwise/src/lib.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 | struct DocumentCreate {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DocumentDelete` is never constructed
[INFO] [stdout]    --> readwise/src/lib.rs:175:8
[INFO] [stdout]     |
[INFO] [stdout] 175 | struct DocumentDelete {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking api v0.1.0 (/opt/rustwide/workdir/api)
[INFO] [stderr]  Documenting api v0.1.0 (/opt/rustwide/workdir/api)
[INFO] [stderr]  Documenting backend v0.1.0 (/opt/rustwide/workdir/backend)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> backend/src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iterator_try_collect)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> backend/src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(random)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `backend`
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d2eff79723db7a8d61d19aa529305fd653e273fee072488561236efe1f058a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2eff79723db7a8d61d19aa529305fd653e273fee072488561236efe1f058a09", kill_on_drop: false }`
[INFO] [stdout] d2eff79723db7a8d61d19aa529305fd653e273fee072488561236efe1f058a09