[INFO] fetching crate ledger-lib 0.1.0...
[INFO] testing ledger-lib-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate ledger-lib 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate ledger-lib 0.1.0
[INFO] finished tweaking crates.io crate ledger-lib 0.1.0
[INFO] tweaked toml for crates.io crate ledger-lib 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ledger-lib 0.1.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 186 packages to latest compatible versions
[INFO] [stderr]       Adding btleplug v0.10.5 (available: v0.11.8)
[INFO] [stderr]       Adding encdec v0.9.0 (available: v0.10.0)
[INFO] [stderr]       Adding strum v0.24.1 (available: v0.27.2)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[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] df85a4e5d23ba4b0fe1ba2acb04bf7718f924c6e5ca9e4da5073a14ad7cc4609
[INFO] running `Command { std: "docker" "start" "-a" "df85a4e5d23ba4b0fe1ba2acb04bf7718f924c6e5ca9e4da5073a14ad7cc4609", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df85a4e5d23ba4b0fe1ba2acb04bf7718f924c6e5ca9e4da5073a14ad7cc4609", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df85a4e5d23ba4b0fe1ba2acb04bf7718f924c6e5ca9e4da5073a14ad7cc4609", kill_on_drop: false }`
[INFO] [stdout] df85a4e5d23ba4b0fe1ba2acb04bf7718f924c6e5ca9e4da5073a14ad7cc4609
[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] fdce402999e1d45df8aa8b9b6f528a839fcd30f3925da2ad7f1c8fdc8bc8520b
[INFO] running `Command { std: "docker" "start" "-a" "fdce402999e1d45df8aa8b9b6f528a839fcd30f3925da2ad7f1c8fdc8bc8520b", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling libdbus-sys v0.2.6
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling encdec-base v0.8.3
[INFO] [stderr]    Compiling xml-rs v0.8.27
[INFO] [stderr]    Compiling hidapi v2.6.3
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling uuid v1.18.1
[INFO] [stderr]    Compiling matchers v0.2.0
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling nu-ansi-term v0.50.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]    Compiling dashmap v5.5.3
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]    Compiling strum v0.24.1
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]    Compiling encdec-macros v0.9.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling encdec-base v0.9.0
[INFO] [stderr]    Compiling tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling encdec v0.9.0
[INFO] [stderr]    Compiling ledger-proto v0.1.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde-xml-rs v0.6.0
[INFO] [stderr]    Compiling dbus v0.9.9
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling tokio-util v0.7.16
[INFO] [stderr]    Compiling tokio-stream v0.1.17
[INFO] [stderr]    Compiling dbus-tokio v0.7.6
[INFO] [stderr]    Compiling bluez-generated v0.3.0
[INFO] [stderr]    Compiling bluez-async v0.7.2
[INFO] [stderr]    Compiling btleplug v0.10.5
[INFO] [stderr]    Compiling ledger-lib 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:53:1
[INFO] [stdout]    |
[INFO] [stdout] 53 | #![feature(negative_impls)]
[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 `ledger-lib` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "fdce402999e1d45df8aa8b9b6f528a839fcd30f3925da2ad7f1c8fdc8bc8520b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdce402999e1d45df8aa8b9b6f528a839fcd30f3925da2ad7f1c8fdc8bc8520b", kill_on_drop: false }`
[INFO] [stdout] fdce402999e1d45df8aa8b9b6f528a839fcd30f3925da2ad7f1c8fdc8bc8520b