[INFO] fetching crate iso-macro 0.0.5...
[INFO] documenting iso-macro-0.0.5 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate iso-macro 0.0.5 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate iso-macro 0.0.5 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 iso-macro 0.0.5
[INFO] finished tweaking crates.io crate iso-macro 0.0.5
[INFO] tweaked toml for crates.io crate iso-macro 0.0.5 written to /workspace/builds/worker-4-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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7a73f9ff2d646a9d855c966115b2e3e5a9c70b3883bdee3fe9e2be3685655580
[INFO] running `Command { std: "docker" "start" "-a" "7a73f9ff2d646a9d855c966115b2e3e5a9c70b3883bdee3fe9e2be3685655580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a73f9ff2d646a9d855c966115b2e3e5a9c70b3883bdee3fe9e2be3685655580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a73f9ff2d646a9d855c966115b2e3e5a9c70b3883bdee3fe9e2be3685655580", kill_on_drop: false }`
[INFO] [stdout] 7a73f9ff2d646a9d855c966115b2e3e5a9c70b3883bdee3fe9e2be3685655580
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] befda220c6185b1994b4b70c7c79849f3ae4787d4f13402a95d698fc9e5a20e6
[INFO] running `Command { std: "docker" "start" "-a" "befda220c6185b1994b4b70c7c79849f3ae4787d4f13402a95d698fc9e5a20e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]  Documenting iso-macro v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | #![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 `iso-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=2018 --crate-type proc-macro --crate-name iso_macro src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f7b16b99161c4f50 -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-3889f6209a44556f.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b5c91c32bf6deb64.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-d979113d1ae5a40c.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4734660023fcde53.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-3bbe6ce641c2c351.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.0.5` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "befda220c6185b1994b4b70c7c79849f3ae4787d4f13402a95d698fc9e5a20e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "befda220c6185b1994b4b70c7c79849f3ae4787d4f13402a95d698fc9e5a20e6", kill_on_drop: false }`
[INFO] [stdout] befda220c6185b1994b4b70c7c79849f3ae4787d4f13402a95d698fc9e5a20e6
[INFO] documenting iso-macro-0.0.5 against beta-2023-12-22 for beta-1.76-rustdoc-1
[INFO] extracting crate iso-macro 0.0.5 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate iso-macro 0.0.5 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iso-macro 0.0.5
[INFO] finished tweaking crates.io crate iso-macro 0.0.5
[INFO] tweaked toml for crates.io crate iso-macro 0.0.5 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a3536f37feeb0276ed87d74ee350377937f798d337a0a9930b77dae251ab9ff
[INFO] running `Command { std: "docker" "start" "-a" "7a3536f37feeb0276ed87d74ee350377937f798d337a0a9930b77dae251ab9ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a3536f37feeb0276ed87d74ee350377937f798d337a0a9930b77dae251ab9ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a3536f37feeb0276ed87d74ee350377937f798d337a0a9930b77dae251ab9ff", kill_on_drop: false }`
[INFO] [stdout] 7a3536f37feeb0276ed87d74ee350377937f798d337a0a9930b77dae251ab9ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8380a735d30fa60d5fcf6728d0d7a1cd369f12b8805b28423612772f6d8d4be1
[INFO] running `Command { std: "docker" "start" "-a" "8380a735d30fa60d5fcf6728d0d7a1cd369f12b8805b28423612772f6d8d4be1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]  Documenting iso-macro v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | #![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 `iso-macro`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2023-12-22-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type proc-macro --crate-name iso_macro src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f52ab6f1c2f7e72c -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d7586fc23a7202ec.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-af317973e368b4b7.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-3518221a1ff7c686.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-3bb4bd36a822a148.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-58f7092da2ff06a1.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.0.5` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8380a735d30fa60d5fcf6728d0d7a1cd369f12b8805b28423612772f6d8d4be1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8380a735d30fa60d5fcf6728d0d7a1cd369f12b8805b28423612772f6d8d4be1", kill_on_drop: false }`
[INFO] [stdout] 8380a735d30fa60d5fcf6728d0d7a1cd369f12b8805b28423612772f6d8d4be1
