[INFO] fetching crate mocktopus_macros 0.7.11...
[INFO] documenting mocktopus_macros-0.7.11 against beta-2023-04-20 for beta-1.70-rustdoc-1
[INFO] extracting crate mocktopus_macros 0.7.11 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate mocktopus_macros 0.7.11 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mocktopus_macros 0.7.11
[INFO] finished tweaking crates.io crate mocktopus_macros 0.7.11
[INFO] tweaked toml for crates.io crate mocktopus_macros 0.7.11 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 746f9b43864d0ebe713036a9a7a57c50ddbac88e5bab5c6e3c12dc0523f3158d
[INFO] running `Command { std: "docker" "start" "-a" "746f9b43864d0ebe713036a9a7a57c50ddbac88e5bab5c6e3c12dc0523f3158d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "746f9b43864d0ebe713036a9a7a57c50ddbac88e5bab5c6e3c12dc0523f3158d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "746f9b43864d0ebe713036a9a7a57c50ddbac88e5bab5c6e3c12dc0523f3158d", kill_on_drop: false }`
[INFO] [stdout] 746f9b43864d0ebe713036a9a7a57c50ddbac88e5bab5c6e3c12dc0523f3158d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab0aa25e8a7fcd623c2beecc2c874c4bd88a422a9242d87172dbee1fbcf27ad1
[INFO] running `Command { std: "docker" "start" "-a" "ab0aa25e8a7fcd623c2beecc2c874c4bd88a422a9242d87172dbee1fbcf27ad1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]  Documenting mocktopus_macros v0.7.11 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(proc_macro_diagnostic)]
[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 `mocktopus_macros`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type proc-macro --crate-name mocktopus_macros src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=923ae4629d141715 -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-51d880c542a9af92.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-a52e91a248d06c41.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-1fb70c356fbccfb9.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.7.11` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ab0aa25e8a7fcd623c2beecc2c874c4bd88a422a9242d87172dbee1fbcf27ad1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab0aa25e8a7fcd623c2beecc2c874c4bd88a422a9242d87172dbee1fbcf27ad1", kill_on_drop: false }`
[INFO] [stdout] ab0aa25e8a7fcd623c2beecc2c874c4bd88a422a9242d87172dbee1fbcf27ad1
