[INFO] cloning repository https://github.com/Obl4ki/factography
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Obl4ki/factography" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FObl4ki%2Ffactography", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FObl4ki%2Ffactography'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d44286296908c5723fe71a13e7691bae0d05ca0b
[INFO] documenting Obl4ki/factography against 1.76.0 for beta-1.77-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FObl4ki%2Ffactography" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Obl4ki/factography 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 git repo https://github.com/Obl4ki/factography
[INFO] finished tweaking git repo https://github.com/Obl4ki/factography
[INFO] tweaked toml for git repo https://github.com/Obl4ki/factography written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Obl4ki/factography 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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] fe98b85516a66e3cd04d0b49eb7c17f08286a822cc8b2edfb0d535ac30533114
[INFO] running `Command { std: "docker" "start" "-a" "fe98b85516a66e3cd04d0b49eb7c17f08286a822cc8b2edfb0d535ac30533114", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe98b85516a66e3cd04d0b49eb7c17f08286a822cc8b2edfb0d535ac30533114", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe98b85516a66e3cd04d0b49eb7c17f08286a822cc8b2edfb0d535ac30533114", kill_on_drop: false }`
[INFO] [stdout] fe98b85516a66e3cd04d0b49eb7c17f08286a822cc8b2edfb0d535ac30533114
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 9281f3d8b57e2eb5f92aa81461af7f716f256ea88053062d65d4acc0e6715427
[INFO] running `Command { std: "docker" "start" "-a" "9281f3d8b57e2eb5f92aa81461af7f716f256ea88053062d65d4acc0e6715427", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]     Checking unicode-ident v1.0.8
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]  Documenting core v0.1.0 (/opt/rustwide/workdir/core)
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking quote v1.0.26
[INFO] [stderr]     Checking syn v2.0.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]  Documenting macros v0.1.0 (/opt/rustwide/workdir/macros)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> macros/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic)]
[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 `macros`
[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 macros macros/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=9ea63d4bf61f9b93 -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-98facd98be50c349.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-2c72965979de137b.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-f0c800418b63ced2.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9281f3d8b57e2eb5f92aa81461af7f716f256ea88053062d65d4acc0e6715427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9281f3d8b57e2eb5f92aa81461af7f716f256ea88053062d65d4acc0e6715427", kill_on_drop: false }`
[INFO] [stdout] 9281f3d8b57e2eb5f92aa81461af7f716f256ea88053062d65d4acc0e6715427
