[INFO] fetching crate dialogical 0.14.0...
[INFO] testing dialogical-0.14.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate dialogical 0.14.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate dialogical 0.14.0
[INFO] finished tweaking crates.io crate dialogical 0.14.0
[INFO] tweaked toml for crates.io crate dialogical 0.14.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dialogical 0.14.0 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 dialogical 0.14.0 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] bd102179060bb9cc5e23393ef5cc9e064dd7e4e5ae06fcc1a898b438188641b8
[INFO] running `Command { std: "docker" "start" "-a" "bd102179060bb9cc5e23393ef5cc9e064dd7e4e5ae06fcc1a898b438188641b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd102179060bb9cc5e23393ef5cc9e064dd7e4e5ae06fcc1a898b438188641b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd102179060bb9cc5e23393ef5cc9e064dd7e4e5ae06fcc1a898b438188641b8", kill_on_drop: false }`
[INFO] [stdout] bd102179060bb9cc5e23393ef5cc9e064dd7e4e5ae06fcc1a898b438188641b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f9992940d4652a798003ecc068f6678818888e9a58ca93c8ef359a57840c7877
[INFO] running `Command { std: "docker" "start" "-a" "f9992940d4652a798003ecc068f6678818888e9a58ca93c8ef359a57840c7877", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling anstyle v1.0.4
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling clap_lex v0.6.0
[INFO] [stderr]    Compiling thiserror v1.0.50
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling map-macro v0.2.6
[INFO] [stderr]    Compiling anstyle-parse v0.2.2
[INFO] [stderr]    Compiling pretty_assertions v1.4.0
[INFO] [stderr]    Compiling anstream v0.6.4
[INFO] [stderr]    Compiling clap_builder v4.4.8
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]    Compiling clap v4.4.8
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling dialogical v0.14.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(if_let_guard)]
[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 `dialogical` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f9992940d4652a798003ecc068f6678818888e9a58ca93c8ef359a57840c7877", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9992940d4652a798003ecc068f6678818888e9a58ca93c8ef359a57840c7877", kill_on_drop: false }`
[INFO] [stdout] f9992940d4652a798003ecc068f6678818888e9a58ca93c8ef359a57840c7877