[INFO] fetching crate hid-io-core 0.1.4...
[INFO] testing hid-io-core-0.1.4 against 1.90.0 for beta-1.91-3
[INFO] extracting crate hid-io-core 0.1.4 into /workspace/builds/worker-5-tc1/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-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hid-io-core 0.1.4 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28d1f2533e0993a27fea7ab21b790d71d38d4c5aa486b6e5d7ad6232e9fb37f2
[INFO] running `Command { std: "docker" "start" "-a" "28d1f2533e0993a27fea7ab21b790d71d38d4c5aa486b6e5d7ad6232e9fb37f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28d1f2533e0993a27fea7ab21b790d71d38d4c5aa486b6e5d7ad6232e9fb37f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28d1f2533e0993a27fea7ab21b790d71d38d4c5aa486b6e5d7ad6232e9fb37f2", kill_on_drop: false }`
[INFO] [stdout] 28d1f2533e0993a27fea7ab21b790d71d38d4c5aa486b6e5d7ad6232e9fb37f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3036b9e1ad437825b9908878265aae333d9038c2c20fe7d4ace0babed1c1760
[INFO] running `Command { std: "docker" "start" "-a" "c3036b9e1ad437825b9908878265aae333d9038c2c20fe7d4ace0babed1c1760", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
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[INFO] [stderr]    Compiling rustc-hash v1.1.0
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[INFO] [stderr]    Compiling tokio-macros v2.1.0
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[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling futures-executor v0.3.28
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling sct v0.7.0
[INFO] [stderr]    Compiling hidapi v2.4.1
[INFO] [stderr]    Compiling evdev-sys v0.2.5
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[INFO] [stderr]    Compiling thiserror v1.0.48
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[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling rustls v0.20.9
[INFO] [stderr]    Compiling deranged v0.3.8
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[INFO] [stderr]    Compiling serde_spanned v0.6.3
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling toml_edit v0.19.14
[INFO] [stderr]    Compiling futures v0.3.28
[INFO] [stderr]    Compiling heapless v0.7.16
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling enum-primitive-derive v0.2.2
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling enumflags2_derive v0.7.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.48
[INFO] [stderr]    Compiling webpki v0.22.1
[INFO] [stderr]    Compiling uhidrs-sys v1.0.2
[INFO] [stderr]    Compiling x11 v2.21.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling base64 v0.21.3
[INFO] [stderr]    Compiling rustls v0.21.7
[INFO] [stderr]    Compiling kll-hid v0.1.2
[INFO] [stderr]    Compiling kll-macros v0.1.2
[INFO] [stderr]    Compiling bytes v1.5.0
[INFO] [stderr]    Compiling os_str_bytes v6.5.1
[INFO] [stderr]    Compiling clap_lex v0.2.4
[INFO] [stderr]    Compiling toml v0.7.6
[INFO] [stderr]    Compiling tokio-util v0.7.8
[INFO] [stderr]    Compiling capnp-futures v0.14.2
[INFO] [stderr]    Compiling kll-core v0.1.8
[INFO] [stderr]    Compiling pem v2.0.1
[INFO] [stderr]    Compiling enumflags2 v0.7.7
[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] [stderr]    Compiling num_enum v0.5.11
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable 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 cargo-lock v9.0.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling wayland-protocols v0.30.1
[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" "c3036b9e1ad437825b9908878265aae333d9038c2c20fe7d4ace0babed1c1760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3036b9e1ad437825b9908878265aae333d9038c2c20fe7d4ace0babed1c1760", kill_on_drop: false }`
[INFO] [stdout] c3036b9e1ad437825b9908878265aae333d9038c2c20fe7d4ace0babed1c1760
