[INFO] fetching crate starry-signal 0.6.0...
[INFO] checking starry-signal-0.6.0 against 1.95.0 for pr-155915
[INFO] extracting crate starry-signal 0.6.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate starry-signal 0.6.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate starry-signal 0.6.0
[INFO] tweaked toml for crates.io crate starry-signal 0.6.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate starry-signal 0.6.0 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 starry-signal 0.6.0 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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 6029977312fde28624b9c584d60ca45c15f3526b0c86e8bd0d53ff082b2beff1
[INFO] running `Command { std: "docker" "start" "-a" "6029977312fde28624b9c584d60ca45c15f3526b0c86e8bd0d53ff082b2beff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6029977312fde28624b9c584d60ca45c15f3526b0c86e8bd0d53ff082b2beff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6029977312fde28624b9c584d60ca45c15f3526b0c86e8bd0d53ff082b2beff1", kill_on_drop: false }`
[INFO] [stdout] 6029977312fde28624b9c584d60ca45c15f3526b0c86e8bd0d53ff082b2beff1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 781049e410d62056a03b2b15a9546e9f58b7bc32e819d888291739f9c601110f
[INFO] running `Command { std: "docker" "start" "-a" "781049e410d62056a03b2b15a9546e9f58b7bc32e819d888291739f9c601110f", kill_on_drop: false }`
[INFO] [stderr]    Compiling const_fn v0.4.12
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]    Compiling ax-errno v0.4.7
[INFO] [stderr]    Compiling unicode-segmentation v1.13.2
[INFO] [stderr]    Compiling ax-percpu v0.4.4
[INFO] [stderr]     Checking spin v0.10.0
[INFO] [stderr]     Checking ax-memory-addr v0.6.2
[INFO] [stderr]     Checking bytemuck v1.25.0
[INFO] [stderr]     Checking ax-lazyinit v0.4.6
[INFO] [stderr]    Compiling starry-signal v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]    Compiling ax-percpu-macros v0.4.4
[INFO] [stderr]    Compiling ax-crate-interface v0.5.1
[INFO] [stderr]    Compiling extern-trait-impl v0.4.3
[INFO] [stderr]     Checking concurrent-queue v2.5.0
[INFO] [stderr]     Checking axbacktrace v0.3.8
[INFO] [stderr]     Checking event-listener v5.4.1
[INFO] [stderr]    Compiling convert_case v0.10.0
[INFO] [stderr]    Compiling derive_more-impl v2.1.1
[INFO] [stderr]     Checking ax-kernel-guard v0.3.8
[INFO] [stderr]     Checking extern-trait v0.4.3
[INFO] [stderr]     Checking ax-kspin v0.3.7
[INFO] [stderr]     Checking x86_64 v0.15.4
[INFO] [stderr]     Checking strum v0.27.2
[INFO] [stderr]     Checking starry-vm v0.5.6
[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/starry-vm-0.5.6/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(maybe_uninit_as_bytes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `starry-vm` (lib) due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "781049e410d62056a03b2b15a9546e9f58b7bc32e819d888291739f9c601110f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "781049e410d62056a03b2b15a9546e9f58b7bc32e819d888291739f9c601110f", kill_on_drop: false }`
[INFO] [stdout] 781049e410d62056a03b2b15a9546e9f58b7bc32e819d888291739f9c601110f