[INFO] fetching crate kiibohd-core-ffi 0.1.0...
[INFO] checking kiibohd-core-ffi-0.1.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate kiibohd-core-ffi 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate kiibohd-core-ffi 0.1.0
[INFO] finished tweaking crates.io crate kiibohd-core-ffi 0.1.0
[INFO] tweaked toml for crates.io crate kiibohd-core-ffi 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate kiibohd-core-ffi 0.1.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 53 packages to latest compatible versions
[INFO] [stderr]       Adding byteorder v1.4.3 (available: v1.5.0)
[INFO] [stderr]       Adding heapless v0.7.17 (available: v0.9.1)
[INFO] [stderr]       Adding kiibohd-hall-effect v0.1.3 (available: v0.2.0)
[INFO] [stderr]       Adding usbd-hid v0.6.1 (available: v0.6.2)
[INFO] [stderr]       Adding usbd-hid-macros v0.6.0 (available: v0.6.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf78a4d09c175e5bcdc4cc03256da9f3b97942c8aebaf694aea31bb886c47de9
[INFO] running `Command { std: "docker" "start" "-a" "cf78a4d09c175e5bcdc4cc03256da9f3b97942c8aebaf694aea31bb886c47de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf78a4d09c175e5bcdc4cc03256da9f3b97942c8aebaf694aea31bb886c47de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf78a4d09c175e5bcdc4cc03256da9f3b97942c8aebaf694aea31bb886c47de9", kill_on_drop: false }`
[INFO] [stdout] cf78a4d09c175e5bcdc4cc03256da9f3b97942c8aebaf694aea31bb886c47de9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c28a5e921382a9a5dcb33d6676e994ef81159dee05c0adc835a308cb9f7dd6b
[INFO] running `Command { std: "docker" "start" "-a" "2c28a5e921382a9a5dcb33d6676e994ef81159dee05c0adc835a308cb9f7dd6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking kll-hid v0.1.2
[INFO] [stderr]    Compiling kll-macros v0.1.2
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking cty v0.2.2
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]     Checking c_utf8 v0.1.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]     Checking kiibohd-keyscanning v0.1.4
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking cstr_core v0.2.6
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling pkg-version-impl v0.1.1
[INFO] [stderr]     Checking pkg-version v1.0.0
[INFO] [stderr]     Checking kiibohd-hall-effect v0.1.3
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling enum-primitive-derive v0.2.2
[INFO] [stderr]     Checking 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]     Checking 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" "2c28a5e921382a9a5dcb33d6676e994ef81159dee05c0adc835a308cb9f7dd6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c28a5e921382a9a5dcb33d6676e994ef81159dee05c0adc835a308cb9f7dd6b", kill_on_drop: false }`
[INFO] [stdout] 2c28a5e921382a9a5dcb33d6676e994ef81159dee05c0adc835a308cb9f7dd6b