[INFO] fetching crate sewup-derive 0.1.14...
[INFO] documenting sewup-derive-0.1.14 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate sewup-derive 0.1.14 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate sewup-derive 0.1.14 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sewup-derive 0.1.14
[INFO] finished tweaking crates.io crate sewup-derive 0.1.14
[INFO] tweaked toml for crates.io crate sewup-derive 0.1.14 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cecd573b7da4e22274fc94725fb96d8d231754df886984d312f399e7838cb42e
[INFO] running `Command { std: "docker" "start" "-a" "cecd573b7da4e22274fc94725fb96d8d231754df886984d312f399e7838cb42e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cecd573b7da4e22274fc94725fb96d8d231754df886984d312f399e7838cb42e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cecd573b7da4e22274fc94725fb96d8d231754df886984d312f399e7838cb42e", kill_on_drop: false }`
[INFO] [stdout] cecd573b7da4e22274fc94725fb96d8d231754df886984d312f399e7838cb42e
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c578d81d7db2c3fa17682d43f699d89c4e04e4ef982643f0a7327e6ff992a69
[INFO] running `Command { std: "docker" "start" "-a" "3c578d81d7db2c3fa17682d43f699d89c4e04e4ef982643f0a7327e6ff992a69", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]     Checking convert_case v0.5.0
[INFO] [stderr]     Checking crunchy v0.2.2
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking fancy-regex v0.7.1
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]     Checking serde_json v1.0.113
[INFO] [stderr]  Documenting sewup-derive v0.1.14 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_into_inner)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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 `sewup-derive`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type proc-macro --crate-name sewup_derive src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=84c212ef2ea62852 -L dependency=/opt/rustwide/target/debug/deps --extern convert_case=/opt/rustwide/target/debug/deps/libconvert_case-b080037c921b0456.rmeta --extern fancy_regex=/opt/rustwide/target/debug/deps/libfancy_regex-8e99533f2e0c5c39.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-3f4eefe04fcadbd1.rmeta --extern paste=/opt/rustwide/target/debug/deps/libpaste-05e44ee96a978324.so --extern proc_macro_error=/opt/rustwide/target/debug/deps/libproc_macro_error-459279ad22d9180b.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-1bc556be54688c37.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-44762e16f83d10ff.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-9101cf7c7db31f26.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-f6c0658181dd854c.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-e9b9a7453b4e4aba.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-931b7ad2a3e506f1.rmeta --extern tiny_keccak=/opt/rustwide/target/debug/deps/libtiny_keccak-03a9bcaaf12e7094.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.1.14` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3c578d81d7db2c3fa17682d43f699d89c4e04e4ef982643f0a7327e6ff992a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c578d81d7db2c3fa17682d43f699d89c4e04e4ef982643f0a7327e6ff992a69", kill_on_drop: false }`
[INFO] [stdout] 3c578d81d7db2c3fa17682d43f699d89c4e04e4ef982643f0a7327e6ff992a69
