[INFO] fetching crate hid-io-protocol 0.1.6...
[INFO] testing hid-io-protocol-0.1.6 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate hid-io-protocol 0.1.6 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate hid-io-protocol 0.1.6
[INFO] finished tweaking crates.io crate hid-io-protocol 0.1.6
[INFO] tweaked toml for crates.io crate hid-io-protocol 0.1.6 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate hid-io-protocol 0.1.6 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 92 packages to latest compatible versions
[INFO] [stderr]       Adding defmt v0.3.100 (available: v1.0.1)
[INFO] [stderr]       Adding flexi_logger v0.25.6 (available: v0.31.2)
[INFO] [stderr]       Adding heapless v0.7.17 (available: v0.9.1)
[INFO] [stderr]       Adding num_enum v0.5.11 (available: v0.7.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5821f95cd886db81e6f718bf78f01ab1395557b435c9e3374dcf3a40bb38edb
[INFO] running `Command { std: "docker" "start" "-a" "c5821f95cd886db81e6f718bf78f01ab1395557b435c9e3374dcf3a40bb38edb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5821f95cd886db81e6f718bf78f01ab1395557b435c9e3374dcf3a40bb38edb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5821f95cd886db81e6f718bf78f01ab1395557b435c9e3374dcf3a40bb38edb", kill_on_drop: false }`
[INFO] [stdout] c5821f95cd886db81e6f718bf78f01ab1395557b435c9e3374dcf3a40bb38edb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e9f903af8e00642802517c8f39df7b915512b07eba9b65c0d4ae1be3e79b488
[INFO] running `Command { std: "docker" "start" "-a" "1e9f903af8e00642802517c8f39df7b915512b07eba9b65c0d4ae1be3e79b488", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling kll-macros v0.1.2
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling kll-hid v0.1.2
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]    Compiling enum-primitive-derive v0.2.2
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[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] [stderr]    Compiling num_enum v0.5.11
[INFO] [stderr] error: could not compile `kll-core` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "1e9f903af8e00642802517c8f39df7b915512b07eba9b65c0d4ae1be3e79b488", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e9f903af8e00642802517c8f39df7b915512b07eba9b65c0d4ae1be3e79b488", kill_on_drop: false }`
[INFO] [stdout] 1e9f903af8e00642802517c8f39df7b915512b07eba9b65c0d4ae1be3e79b488