[INFO] fetching crate lemon-tree-derive 1.0.4...
[INFO] documenting lemon-tree-derive-1.0.4 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate lemon-tree-derive 1.0.4 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate lemon-tree-derive 1.0.4 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 lemon-tree-derive 1.0.4
[INFO] finished tweaking crates.io crate lemon-tree-derive 1.0.4
[INFO] tweaked toml for crates.io crate lemon-tree-derive 1.0.4 written to /workspace/builds/worker-3-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 lemon-mint v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 97f4e33109f4be7016001949d56675f28dada79833e2380fe997f2b7f63282f4
[INFO] running `Command { std: "docker" "start" "-a" "97f4e33109f4be7016001949d56675f28dada79833e2380fe997f2b7f63282f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97f4e33109f4be7016001949d56675f28dada79833e2380fe997f2b7f63282f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97f4e33109f4be7016001949d56675f28dada79833e2380fe997f2b7f63282f4", kill_on_drop: false }`
[INFO] [stdout] 97f4e33109f4be7016001949d56675f28dada79833e2380fe997f2b7f63282f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 100bccc050fb78e8e815cde18dd63323cade1671788af1eda8d25663cca45f3c
[INFO] running `Command { std: "docker" "start" "-a" "100bccc050fb78e8e815cde18dd63323cade1671788af1eda8d25663cca45f3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking lemon-mint v0.1.4
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]  Documenting lemon-tree-derive v1.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(proc_macro_span)]
[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 `lemon-tree-derive`
[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 lemon_tree_derive src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=cb8a53ceef2a137c -L dependency=/opt/rustwide/target/debug/deps --extern lemon_mint=/opt/rustwide/target/debug/deps/liblemon_mint-afff081e4dc770bb.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-a36e91fa3e8f38e0.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 proc_macro --cap-lints=warn --crate-version 1.0.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "100bccc050fb78e8e815cde18dd63323cade1671788af1eda8d25663cca45f3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "100bccc050fb78e8e815cde18dd63323cade1671788af1eda8d25663cca45f3c", kill_on_drop: false }`
[INFO] [stdout] 100bccc050fb78e8e815cde18dd63323cade1671788af1eda8d25663cca45f3c
[INFO] documenting lemon-tree-derive-1.0.4 against beta-2023-12-22 for beta-1.76-rustdoc-1
[INFO] extracting crate lemon-tree-derive 1.0.4 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate lemon-tree-derive 1.0.4 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 lemon-tree-derive 1.0.4
[INFO] finished tweaking crates.io crate lemon-tree-derive 1.0.4
[INFO] tweaked toml for crates.io crate lemon-tree-derive 1.0.4 written to /workspace/builds/worker-3-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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6312fe630827e3ce0ba4d8b860b95198b5a60b188b13817bc4ee76005e2c4f4
[INFO] running `Command { std: "docker" "start" "-a" "b6312fe630827e3ce0ba4d8b860b95198b5a60b188b13817bc4ee76005e2c4f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6312fe630827e3ce0ba4d8b860b95198b5a60b188b13817bc4ee76005e2c4f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6312fe630827e3ce0ba4d8b860b95198b5a60b188b13817bc4ee76005e2c4f4", kill_on_drop: false }`
[INFO] [stdout] b6312fe630827e3ce0ba4d8b860b95198b5a60b188b13817bc4ee76005e2c4f4
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/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] 3ca722900692c34d238a16aa73dffa083a28279462348ac52c6bdf5a6dea74f9
[INFO] running `Command { std: "docker" "start" "-a" "3ca722900692c34d238a16aa73dffa083a28279462348ac52c6bdf5a6dea74f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking lemon-mint v0.1.4
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]  Documenting lemon-tree-derive v1.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(proc_macro_span)]
[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 `lemon-tree-derive`
[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 lemon_tree_derive src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f23cd04aa98d8c29 -L dependency=/opt/rustwide/target/debug/deps --extern lemon_mint=/opt/rustwide/target/debug/deps/liblemon_mint-d03452ff8b0c8b12.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-169c79dbe5704c03.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d7586fc23a7202ec.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-af317973e368b4b7.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-c08858159c602e75.rmeta --extern proc_macro --cap-lints=warn --crate-version 1.0.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3ca722900692c34d238a16aa73dffa083a28279462348ac52c6bdf5a6dea74f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ca722900692c34d238a16aa73dffa083a28279462348ac52c6bdf5a6dea74f9", kill_on_drop: false }`
[INFO] [stdout] 3ca722900692c34d238a16aa73dffa083a28279462348ac52c6bdf5a6dea74f9
