[INFO] fetching crate castle_macro 0.20.2...
[INFO] documenting castle_macro-0.20.2 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate castle_macro 0.20.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate castle_macro 0.20.2 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 castle_macro 0.20.2
[INFO] finished tweaking crates.io crate castle_macro 0.20.2
[INFO] tweaked toml for crates.io crate castle_macro 0.20.2 written to /workspace/builds/worker-2-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 async-recursion v1.0.5
[INFO] [stderr]   Downloaded byte v0.2.6
[INFO] [stderr]   Downloaded castle_input_cursor v0.20.2
[INFO] [stderr]   Downloaded unzip-n v0.1.2
[INFO] [stderr]   Downloaded castle_shared_parser v0.20.2
[INFO] [stderr]   Downloaded castle_types v0.20.2
[INFO] [stderr]   Downloaded castle_schema_parser v0.20.2
[INFO] [stderr]   Downloaded castle_tokenizer v0.20.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3ce1576b97a67bd57dcfc008ab3ae49443d9bd152936a9eceb9f38a29befee77
[INFO] running `Command { std: "docker" "start" "-a" "3ce1576b97a67bd57dcfc008ab3ae49443d9bd152936a9eceb9f38a29befee77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ce1576b97a67bd57dcfc008ab3ae49443d9bd152936a9eceb9f38a29befee77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ce1576b97a67bd57dcfc008ab3ae49443d9bd152936a9eceb9f38a29befee77", kill_on_drop: false }`
[INFO] [stdout] 3ce1576b97a67bd57dcfc008ab3ae49443d9bd152936a9eceb9f38a29befee77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 1b663ae43a7cc3b3aadece249698c408d1c1d51b80b31453434e0e841e238d00
[INFO] running `Command { std: "docker" "start" "-a" "1b663ae43a7cc3b3aadece249698c408d1c1d51b80b31453434e0e841e238d00", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking byte v0.2.6
[INFO] [stderr]     Checking fast-float v0.2.0
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking rmp v0.8.12
[INFO] [stderr]    Compiling unzip-n v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling async-recursion v1.0.5
[INFO] [stderr]     Checking tokio v1.35.1
[INFO] [stderr]     Checking uuid v1.6.1
[INFO] [stderr]     Checking rmp-serde v1.1.2
[INFO] [stderr]     Checking castle_input_cursor v0.20.2
[INFO] [stderr]     Checking castle_types v0.20.2
[INFO] [stderr]     Checking castle_tokenizer v0.20.2
[INFO] [stderr]     Checking castle_shared_parser v0.20.2
[INFO] [stderr]     Checking castle_schema_parser v0.20.2
[INFO] [stderr]  Documenting castle_macro v0.20.2 (/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(proc_macro_diagnostic)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `drain_filter`
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `castle_macro`
[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=2021 --crate-type proc-macro --crate-name castle_macro src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=08e934020734f664 -L dependency=/opt/rustwide/target/debug/deps --extern castle_schema_parser=/opt/rustwide/target/debug/deps/libcastle_schema_parser-db4ec411a92af20a.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-3889f6209a44556f.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b5c91c32bf6deb64.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-82df1375c9560a74.rmeta --extern unzip_n=/opt/rustwide/target/debug/deps/libunzip_n-989ce76b4fc9042b.so --extern proc_macro --cap-lints=warn --crate-version 0.20.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "1b663ae43a7cc3b3aadece249698c408d1c1d51b80b31453434e0e841e238d00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b663ae43a7cc3b3aadece249698c408d1c1d51b80b31453434e0e841e238d00", kill_on_drop: false }`
[INFO] [stdout] 1b663ae43a7cc3b3aadece249698c408d1c1d51b80b31453434e0e841e238d00
