[INFO] fetching crate flow-bot 0.2.0...
[INFO] testing flow-bot-0.2.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate flow-bot 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] removed /workspace/builds/worker-1-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate flow-bot 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate flow-bot 0.2.0
[INFO] tweaked toml for crates.io crate flow-bot 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flow-bot 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 flow-bot 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-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 312d2793bde98df2247db9fa68b5a5dc93a42b8d6b836bc0e35e9d1878662485
[INFO] running `Command { std: "docker" "start" "-a" "312d2793bde98df2247db9fa68b5a5dc93a42b8d6b836bc0e35e9d1878662485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "312d2793bde98df2247db9fa68b5a5dc93a42b8d6b836bc0e35e9d1878662485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "312d2793bde98df2247db9fa68b5a5dc93a42b8d6b836bc0e35e9d1878662485", kill_on_drop: false }`
[INFO] [stdout] 312d2793bde98df2247db9fa68b5a5dc93a42b8d6b836bc0e35e9d1878662485
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24e8969f8a75d9eab3f8bfeee7177610b106c9096a3dbf9da6d35b3a64bf7b96
[INFO] running `Command { std: "docker" "start" "-a" "24e8969f8a75d9eab3f8bfeee7177610b106c9096a3dbf9da6d35b3a64bf7b96", kill_on_drop: false }`
[INFO] [stderr]    Compiling slab v0.4.10
[INFO] [stderr]    Compiling cc v1.2.27
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling syn v2.0.103
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling hashbrown v0.15.4
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling tower-layer v0.3.3
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling iri-string v0.7.8
[INFO] [stderr]    Compiling rustls-pki-types v1.12.0
[INFO] [stderr]    Compiling encoding_rs v0.8.35
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling uuid v1.17.0
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling rand v0.9.1
[INFO] [stderr]    Compiling openssl-sys v0.9.109
[INFO] [stderr]    Compiling openssl v0.10.73
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.0
[INFO] [stderr]    Compiling zerovec-derive v0.11.1
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling async-trait v0.1.88
[INFO] [stderr]    Compiling tokio v1.45.1
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling zerofrom v0.1.6
[INFO] [stderr]    Compiling yoke v0.8.0
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling tungstenite v0.27.0
[INFO] [stderr]    Compiling zerovec v0.11.2
[INFO] [stderr]    Compiling zerotrie v0.2.2
[INFO] [stderr]    Compiling tinystr v0.8.1
[INFO] [stderr]    Compiling potential_utf v0.1.2
[INFO] [stderr]    Compiling icu_collections v2.0.0
[INFO] [stderr]    Compiling icu_locale_core v2.0.0
[INFO] [stderr]    Compiling icu_provider v2.0.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling icu_normalizer v2.0.0
[INFO] [stderr]    Compiling icu_properties v2.0.1
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling tokio-util v0.7.15
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling tower v0.5.2
[INFO] [stderr]    Compiling tokio-tungstenite v0.27.0
[INFO] [stderr]    Compiling tower-http v0.6.6
[INFO] [stderr]    Compiling h2 v0.4.10
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling idna_adapter v1.2.1
[INFO] [stderr]    Compiling idna v1.0.3
[INFO] [stderr]    Compiling url v2.5.4
[INFO] [stderr]    Compiling hyper v1.6.0
[INFO] [stderr]    Compiling hyper-util v0.1.14
[INFO] [stderr]    Compiling hyper-tls v0.6.0
[INFO] [stderr]    Compiling reqwest v0.12.20
[INFO] [stderr]    Compiling flow-bot v0.2.0 (/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(try_trait_v2)]
[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 `flow-bot` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "24e8969f8a75d9eab3f8bfeee7177610b106c9096a3dbf9da6d35b3a64bf7b96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e8969f8a75d9eab3f8bfeee7177610b106c9096a3dbf9da6d35b3a64bf7b96", kill_on_drop: false }`
[INFO] [stdout] 24e8969f8a75d9eab3f8bfeee7177610b106c9096a3dbf9da6d35b3a64bf7b96
