[INFO] cloning repository https://github.com/Antti/rubygems-rust-experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Antti/rubygems-rust-experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAntti%2Frubygems-rust-experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAntti%2Frubygems-rust-experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f5766bd8baf4aa90dd8e42c74b31c4af85ed32a7
[INFO] documenting Antti/rubygems-rust-experiments against beta-2025-10-28 for beta-1.92-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAntti%2Frubygems-rust-experiments" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Antti/rubygems-rust-experiments
[INFO] finished tweaking git repo https://github.com/Antti/rubygems-rust-experiments
[INFO] tweaked toml for git repo https://github.com/Antti/rubygems-rust-experiments written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Antti/rubygems-rust-experiments on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Antti/rubygems-rust-experiments 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5186a7ea24a1c9b1e776b032ce2737df63a4081873ec7a47b032eec6b6dd4214
[INFO] running `Command { std: "docker" "start" "-a" "5186a7ea24a1c9b1e776b032ce2737df63a4081873ec7a47b032eec6b6dd4214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5186a7ea24a1c9b1e776b032ce2737df63a4081873ec7a47b032eec6b6dd4214", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5186a7ea24a1c9b1e776b032ce2737df63a4081873ec7a47b032eec6b6dd4214", kill_on_drop: false }`
[INFO] [stdout] 5186a7ea24a1c9b1e776b032ce2737df63a4081873ec7a47b032eec6b6dd4214
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b56c346ef1cf4770484c309d28b6314fb18eae83e295fc11a34219ea3a28ba4
[INFO] running `Command { std: "docker" "start" "-a" "8b56c346ef1cf4770484c309d28b6314fb18eae83e295fc11a34219ea3a28ba4", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]  Documenting test_ruby v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(libc)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/macros.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     (x as u32 & RUBY_FLONUM_MASK == RUBY_FLONUM_FLAG)
[INFO] [stdout]    |     ^                                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 20 -     (x as u32 & RUBY_FLONUM_MASK == RUBY_FLONUM_FLAG)
[INFO] [stdout] 20 +     x as u32 & RUBY_FLONUM_MASK == RUBY_FLONUM_FLAG 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/macros.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     ((x as u32 & (!((!0)<<RUBY_SPECIAL_SHIFT))) == RUBY_SYMBOL_FLAG)
[INFO] [stdout]    |     ^                                                              ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 25 -     ((x as u32 & (!((!0)<<RUBY_SPECIAL_SHIFT))) == RUBY_SYMBOL_FLAG)
[INFO] [stdout] 25 +     (x as u32 & (!((!0)<<RUBY_SPECIAL_SHIFT))) == RUBY_SYMBOL_FLAG 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `test_ruby`
[INFO] running `Command { std: "docker" "inspect" "8b56c346ef1cf4770484c309d28b6314fb18eae83e295fc11a34219ea3a28ba4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b56c346ef1cf4770484c309d28b6314fb18eae83e295fc11a34219ea3a28ba4", kill_on_drop: false }`
[INFO] [stdout] 8b56c346ef1cf4770484c309d28b6314fb18eae83e295fc11a34219ea3a28ba4
