[INFO] fetching crate pinar 0.1.0...
[INFO] documenting pinar-0.1.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate pinar 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate pinar 0.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pinar 0.1.0
[INFO] finished tweaking crates.io crate pinar 0.1.0
[INFO] tweaked toml for crates.io crate pinar 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pinar-napi-sys v0.1.0
[INFO] [stderr]   Downloaded pinar-derive v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bcf51de8b920b883f6826373607f285afff6e2a61129af3fe6b38d11c5607a44
[INFO] running `Command { std: "docker" "start" "-a" "bcf51de8b920b883f6826373607f285afff6e2a61129af3fe6b38d11c5607a44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bcf51de8b920b883f6826373607f285afff6e2a61129af3fe6b38d11c5607a44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcf51de8b920b883f6826373607f285afff6e2a61129af3fe6b38d11c5607a44", kill_on_drop: false }`
[INFO] [stdout] bcf51de8b920b883f6826373607f285afff6e2a61129af3fe6b38d11c5607a44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14636ee426963c7cd7975c957fa957808647bba7b8c424567ba66e6173bd6e02
[INFO] running `Command { std: "docker" "start" "-a" "14636ee426963c7cd7975c957fa957808647bba7b8c424567ba66e6173bd6e02", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling pinar-napi-sys v0.1.0
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling pinar-derive v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]  Documenting pinar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(core_intrinsics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `pinar`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type cdylib --crate-name pinar src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="pinar-derive"' --cfg 'feature="pinar-serde"' --cfg 'feature="serde"' --cfg 'feature="serde_derive"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7206fc71d8d7919f -L dependency=/opt/rustwide/target/debug/deps --extern failure=/opt/rustwide/target/debug/deps/libfailure-995117a5afa46b3e.rmeta --extern pinar_derive=/opt/rustwide/target/debug/deps/libpinar_derive-440396c4c68c05ab.so --extern napi_sys=/opt/rustwide/target/debug/deps/libpinar_napi_sys-07dd9ac9acc31522.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-d959715fe86d3f0d.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-d2ced8b4540a43b2.so --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "14636ee426963c7cd7975c957fa957808647bba7b8c424567ba66e6173bd6e02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14636ee426963c7cd7975c957fa957808647bba7b8c424567ba66e6173bd6e02", kill_on_drop: false }`
[INFO] [stdout] 14636ee426963c7cd7975c957fa957808647bba7b8c424567ba66e6173bd6e02
