[INFO] fetching crate hid-io-core 0.1.4...
[INFO] testing hid-io-core-0.1.4 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate hid-io-core 0.1.4 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate hid-io-core 0.1.4
[INFO] finished tweaking crates.io crate hid-io-core 0.1.4
[INFO] tweaked toml for crates.io crate hid-io-core 0.1.4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate hid-io-core 0.1.4 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 hid-io-core 0.1.4 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 5ccc14d4faa0050fb69cd4b666c7ff768a0a227b9e780f7ddaae048f04f8f37d
[INFO] running `Command { std: "docker" "start" "-a" "5ccc14d4faa0050fb69cd4b666c7ff768a0a227b9e780f7ddaae048f04f8f37d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ccc14d4faa0050fb69cd4b666c7ff768a0a227b9e780f7ddaae048f04f8f37d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ccc14d4faa0050fb69cd4b666c7ff768a0a227b9e780f7ddaae048f04f8f37d", kill_on_drop: false }`
[INFO] [stdout] 5ccc14d4faa0050fb69cd4b666c7ff768a0a227b9e780f7ddaae048f04f8f37d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 6765878d6a2eb2515fac173735f546b344b485d7c1bc3688d7c420b67442f089
[INFO] running `Command { std: "docker" "start" "-a" "6765878d6a2eb2515fac173735f546b344b485d7c1bc3688d7c420b67442f089", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling memchr v2.6.3
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling semver v1.0.18
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling clang-sys v1.6.1
[INFO] [stderr]    Compiling futures-sink v0.3.28
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling jobserver v0.1.26
[INFO] [stderr]    Compiling syn v2.0.31
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling hashbrown v0.14.0
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling unicode-normalization v0.1.22
[INFO] [stderr]    Compiling regex-syntax v0.7.5
[INFO] [stderr]    Compiling unicode-bidi v0.3.13
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling futures-io v0.3.28
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling percent-encoding v2.3.0
[INFO] [stderr]    Compiling idna v0.4.0
[INFO] [stderr]    Compiling indexmap v2.0.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling libz-sys v1.1.12
[INFO] [stderr]    Compiling libgit2-sys v0.15.2+1.6.4
[INFO] [stderr]    Compiling form_urlencoded v1.2.0
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling wayland-sys v0.30.1
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling libloading v0.8.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling winnow v0.5.15
[INFO] [stderr]    Compiling bindgen v0.63.0
[INFO] [stderr]    Compiling bitflags v2.4.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling dlib v0.5.2
[INFO] [stderr]    Compiling url v2.4.1
[INFO] [stderr]    Compiling nix v0.26.4
[INFO] [stderr]    Compiling regex-automata v0.3.8
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling wayland-backend v0.1.2
[INFO] [stderr]    Compiling regex v1.9.5
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling iana-time-zone v0.1.57
[INFO] [stderr]    Compiling rustix v0.38.11
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling shlex v1.2.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling chrono v0.4.30
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling socket2 v0.5.3
[INFO] [stderr]    Compiling mio v0.8.8
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling quick-xml v0.28.2
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling smallvec v1.11.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling scoped-tls v1.0.1
[INFO] [stderr]    Compiling linux-raw-sys v0.4.5
[INFO] [stderr]    Compiling wayland-scanner v0.30.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling tokio v1.32.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling futures-executor v0.3.28
[INFO] [stderr]    Compiling sct v0.7.0
[INFO] [stderr]    Compiling sys-info v0.9.1
[INFO] [stderr]    Compiling hidapi v2.4.1
[INFO] [stderr]    Compiling evdev-sys v0.2.5
[INFO] [stderr]    Compiling aho-corasick v1.0.5
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling rustls v0.20.9
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling thiserror v1.0.48
[INFO] [stderr]    Compiling deranged v0.3.8
[INFO] [stderr]    Compiling capnp v0.14.11
[INFO] [stderr]    Compiling time-core v0.1.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling capnpc v0.14.9
[INFO] [stderr]    Compiling toml_datetime v0.6.3
[INFO] [stderr]    Compiling serde_spanned v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling toml_edit v0.19.14
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling uhidrs-sys v1.0.2
[INFO] [stderr]    Compiling heapless v0.7.16
[INFO] [stderr]    Compiling time v0.3.28
[INFO] [stderr]    Compiling wayland-client v0.30.2
[INFO] [stderr]    Compiling futures v0.3.28
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling enum-primitive-derive v0.2.2
[INFO] [stderr]    Compiling webpki v0.22.1
[INFO] [stderr]    Compiling enumflags2_derive v0.7.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.48
[INFO] [stderr]    Compiling x11 v2.21.0
[INFO] [stderr]    Compiling toml v0.7.6
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling os_str_bytes v6.5.1
[INFO] [stderr]    Compiling kll-hid v0.1.2
[INFO] [stderr]    Compiling rustls v0.21.7
[INFO] [stderr]    Compiling cargo-lock v9.0.0
[INFO] [stderr]    Compiling bytes v1.5.0
[INFO] [stderr]    Compiling kll-macros v0.1.2
[INFO] [stderr]    Compiling base64 v0.21.3
[INFO] [stderr]    Compiling kll-core v0.1.8
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/kll-core-0.1.8/src/layout/mod.rs:322:79
[INFO] [stdout]     |
[INFO] [stdout] 322 |         let layer_guides = if capability_state != CapabilityEvent::Initial && let Some((layer, _layer_state)) = cache_hit {
[INFO] [stdout]     |                                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/kll-core-0.1.8/src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `let_chains` has been stable since `1.88.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pem v2.0.1
[INFO] [stderr]    Compiling tokio-util v0.7.8
[INFO] [stderr]    Compiling capnp-futures v0.14.2
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kll-core` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6765878d6a2eb2515fac173735f546b344b485d7c1bc3688d7c420b67442f089", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6765878d6a2eb2515fac173735f546b344b485d7c1bc3688d7c420b67442f089", kill_on_drop: false }`
[INFO] [stdout] 6765878d6a2eb2515fac173735f546b344b485d7c1bc3688d7c420b67442f089
