[INFO] fetching crate ax-plat-riscv64-qemu-virt 0.5.2...
[INFO] checking ax-plat-riscv64-qemu-virt-0.5.2 against 1.95.0 for pr-155915
[INFO] extracting crate ax-plat-riscv64-qemu-virt 0.5.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate ax-plat-riscv64-qemu-virt 0.5.2
[INFO] finished tweaking crates.io crate ax-plat-riscv64-qemu-virt 0.5.2
[INFO] tweaked toml for crates.io crate ax-plat-riscv64-qemu-virt 0.5.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ax-plat-riscv64-qemu-virt 0.5.2 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ax-plat-riscv64-qemu-virt 0.5.2 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" "+1.95.0" "fetch" "--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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uart_16550 v0.5.0
[INFO] [stderr]   Downloaded ax-riscv-plic v0.4.1
[INFO] [stderr]   Downloaded sbi-rt v0.0.3
[INFO] [stderr]   Downloaded riscv_goldfish v0.1.1
[INFO] [stderr]   Downloaded sbi-spec v0.0.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 090d69deda572d5f7dcec250f7d687cb3c6724f312eb0369ed9d4814a02e2ca2
[INFO] running `Command { std: "docker" "start" "-a" "090d69deda572d5f7dcec250f7d687cb3c6724f312eb0369ed9d4814a02e2ca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "090d69deda572d5f7dcec250f7d687cb3c6724f312eb0369ed9d4814a02e2ca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "090d69deda572d5f7dcec250f7d687cb3c6724f312eb0369ed9d4814a02e2ca2", kill_on_drop: false }`
[INFO] [stdout] 090d69deda572d5f7dcec250f7d687cb3c6724f312eb0369ed9d4814a02e2ca2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78d909b4905e860cbc07d03fdd6306189ecad4b81c2be552b4db195bfae7ce62
[INFO] running `Command { std: "docker" "start" "-a" "78d909b4905e860cbc07d03fdd6306189ecad4b81c2be552b4db195bfae7ce62", kill_on_drop: false }`
[INFO] [stderr]    Compiling x86 v0.52.0
[INFO] [stderr]    Compiling const_fn v0.4.12
[INFO] [stderr]     Checking raw-cpuid v10.7.0
[INFO] [stderr]    Compiling clap_lex v1.1.0
[INFO] [stderr]    Compiling hashbrown v0.17.0
[INFO] [stderr]    Compiling ax-percpu v0.4.4
[INFO] [stderr]     Checking spin v0.10.0
[INFO] [stderr]    Compiling anstream v1.0.0
[INFO] [stderr]     Checking ax-memory-addr v0.6.2
[INFO] [stderr]    Compiling winnow v0.7.15
[INFO] [stderr]    Compiling toml_write v0.1.2
[INFO] [stderr]     Checking volatile v0.4.6
[INFO] [stderr]     Checking ax-lazyinit v0.4.3
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking const-str v1.1.0
[INFO] [stderr]    Compiling ax-plat-riscv64-qemu-virt v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking axbacktrace v0.3.4
[INFO] [stderr]    Compiling clap_builder v4.6.0
[INFO] [stderr]    Compiling indexmap v2.14.0
[INFO] [stderr]     Checking x86_64 v0.15.4
[INFO] [stderr]    Compiling toml_edit v0.22.27
[INFO] [stderr]     Checking ax-page-table-entry v0.8.2
[INFO] [stderr]    Compiling ax-percpu-macros v0.4.4
[INFO] [stderr]    Compiling clap_derive v4.6.0
[INFO] [stderr]    Compiling ax-crate-interface v0.5.1
[INFO] [stderr]    Compiling ax-plat-macros v0.3.1
[INFO] [stderr]     Checking ax-kernel-guard v0.3.4
[INFO] [stderr]     Checking ax-cpu v0.5.1
[INFO] [stderr]     Checking ax-kspin v0.3.2
[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/ax-cpu-0.5.1/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(extern_item_impls)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ax-plat v0.5.2
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ax-cpu` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "78d909b4905e860cbc07d03fdd6306189ecad4b81c2be552b4db195bfae7ce62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78d909b4905e860cbc07d03fdd6306189ecad4b81c2be552b4db195bfae7ce62", kill_on_drop: false }`
[INFO] [stdout] 78d909b4905e860cbc07d03fdd6306189ecad4b81c2be552b4db195bfae7ce62