[INFO] fetching crate ttydo 0.2.0...
[INFO] testing ttydo-0.2.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate ttydo 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate ttydo 0.2.0
[INFO] finished tweaking crates.io crate ttydo 0.2.0
[INFO] tweaked toml for crates.io crate ttydo 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ttydo 0.2.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ttydo 0.2.0 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-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff632befcecca8b47b9c68dc7d702b5ed71f1a52d9c17acb4c2bc843c9e51afa
[INFO] running `Command { std: "docker" "start" "-a" "ff632befcecca8b47b9c68dc7d702b5ed71f1a52d9c17acb4c2bc843c9e51afa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff632befcecca8b47b9c68dc7d702b5ed71f1a52d9c17acb4c2bc843c9e51afa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff632befcecca8b47b9c68dc7d702b5ed71f1a52d9c17acb4c2bc843c9e51afa", kill_on_drop: false }`
[INFO] [stdout] ff632befcecca8b47b9c68dc7d702b5ed71f1a52d9c17acb4c2bc843c9e51afa
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b1a1c71688a4f250fb9ca82c26f46b1c69b9bf50c5a6a14ca07b6bc36bb8ba5
[INFO] running `Command { std: "docker" "start" "-a" "5b1a1c71688a4f250fb9ca82c26f46b1c69b9bf50c5a6a14ca07b6bc36bb8ba5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling cc v1.1.21
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling futures-sink v0.3.30
[INFO] [stderr]    Compiling futures-channel v0.3.30
[INFO] [stderr]    Compiling gimli v0.28.1
[INFO] [stderr]    Compiling bytes v1.7.2
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling tracing-subscriber v0.3.18
[INFO] [stderr]    Compiling rustix v0.38.37
[INFO] [stderr]    Compiling miniz_oxide v0.7.4
[INFO] [stderr]    Compiling indexmap v2.5.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling anstyle-parse v0.2.5
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]    Compiling object v0.32.2
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling winnow v0.6.18
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling mio v1.0.2
[INFO] [stderr]    Compiling addr2line v0.21.0
[INFO] [stderr]    Compiling tracing-error v0.2.0
[INFO] [stderr]    Compiling anstyle v1.0.8
[INFO] [stderr]    Compiling indenter v0.3.3
[INFO] [stderr]    Compiling owo-colors v3.5.0
[INFO] [stderr]    Compiling colorchoice v1.0.2
[INFO] [stderr]    Compiling anstyle-query v1.1.1
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling anstream v0.6.15
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling home v0.5.9
[INFO] [stderr]    Compiling clap_lex v0.7.2
[INFO] [stderr]    Compiling color-spantrace v0.2.1
[INFO] [stderr]    Compiling clap_builder v4.5.18
[INFO] [stderr]    Compiling regex-automata v0.4.7
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]    Compiling tokio v1.40.0
[INFO] [stderr]    Compiling which v6.0.3
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling async-stream v0.3.5
[INFO] [stderr]    Compiling async-trait v0.1.82
[INFO] [stderr]    Compiling clap_derive v4.5.18
[INFO] [stderr]    Compiling color-eyre v0.6.3
[INFO] [stderr]    Compiling regex v1.10.6
[INFO] [stderr]    Compiling clap v4.5.18
[INFO] [stderr]    Compiling env_filter v0.1.2
[INFO] [stderr]    Compiling env_logger v0.11.5
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling tokio-fd v0.3.0
[INFO] [stderr]    Compiling tokio-stream v0.1.16
[INFO] [stderr]    Compiling toml_datetime v0.6.8
[INFO] [stderr]    Compiling serde_spanned v0.6.7
[INFO] [stderr]    Compiling toml_edit v0.22.21
[INFO] [stderr]    Compiling toml v0.8.19
[INFO] [stderr]    Compiling ttycommand v0.2.0
[INFO] [stderr]    Compiling commandstream v0.3.0
[INFO] [stderr]    Compiling ttydo v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> crates/ttydo/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_iterator)]
[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 `ttydo` (bin "ttydo") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "5b1a1c71688a4f250fb9ca82c26f46b1c69b9bf50c5a6a14ca07b6bc36bb8ba5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b1a1c71688a4f250fb9ca82c26f46b1c69b9bf50c5a6a14ca07b6bc36bb8ba5", kill_on_drop: false }`
[INFO] [stdout] 5b1a1c71688a4f250fb9ca82c26f46b1c69b9bf50c5a6a14ca07b6bc36bb8ba5