[INFO] fetching crate rocketmq-rust 0.8.0...
[INFO] testing rocketmq-rust-0.8.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rocketmq-rust 0.8.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate rocketmq-rust 0.8.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rocketmq-rust 0.8.0
[INFO] tweaked toml for crates.io crate rocketmq-rust 0.8.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rocketmq-rust 0.8.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rocketmq-rust 0.8.0 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-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27860b1a36b6e255088222df8fb13d6ac717a88c0a73b70b6c0fd17295925034
[INFO] running `Command { std: "docker" "start" "-a" "27860b1a36b6e255088222df8fb13d6ac717a88c0a73b70b6c0fd17295925034", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27860b1a36b6e255088222df8fb13d6ac717a88c0a73b70b6c0fd17295925034", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27860b1a36b6e255088222df8fb13d6ac717a88c0a73b70b6c0fd17295925034", kill_on_drop: false }`
[INFO] [stdout] 27860b1a36b6e255088222df8fb13d6ac717a88c0a73b70b6c0fd17295925034
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20c88f9788fcff3483270c7c436c62871e9399b76290738a0b9c43013fce5669
[INFO] running `Command { std: "docker" "start" "-a" "20c88f9788fcff3483270c7c436c62871e9399b76290738a0b9c43013fce5669", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling siphasher v1.0.2
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling anyhow v1.0.102
[INFO] [stderr]    Compiling getrandom v0.4.1
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling winnow v0.7.15
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling mio v1.1.1
[INFO] [stderr]    Compiling socket2 v0.6.2
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling uuid v1.23.0
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]    Compiling phf_macros v0.11.3
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling tokio v1.50.0
[INFO] [stderr]    Compiling phf v0.11.3
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling rocketmq-error v0.8.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling chrono v0.4.44
[INFO] [stderr]    Compiling cron v0.16.0
[INFO] [stderr]    Compiling tokio-util v0.7.18
[INFO] [stderr]    Compiling rocketmq-rust v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(sync_unsafe_cell)]
[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 compile `rocketmq-rust` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "20c88f9788fcff3483270c7c436c62871e9399b76290738a0b9c43013fce5669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20c88f9788fcff3483270c7c436c62871e9399b76290738a0b9c43013fce5669", kill_on_drop: false }`
[INFO] [stdout] 20c88f9788fcff3483270c7c436c62871e9399b76290738a0b9c43013fce5669
