[INFO] fetching crate starry-vm 0.5.6...
[INFO] testing starry-vm-0.5.6 against 1.95.0 for beta-1.96-2
[INFO] extracting crate starry-vm 0.5.6 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate starry-vm 0.5.6
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate starry-vm 0.5.6
[INFO] tweaked toml for crates.io crate starry-vm 0.5.6 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate starry-vm 0.5.6 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-vm 0.5.6 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ax-errno v0.4.7
[INFO] [stderr]   Downloaded extern-trait v0.4.3
[INFO] [stderr]   Downloaded extern-trait-impl v0.4.3
[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] 301c6f6ee8ce0392d0f4d4e7b5a71d0616bad8b89046cd6611010c1d3509a8b3
[INFO] running `Command { std: "docker" "start" "-a" "301c6f6ee8ce0392d0f4d4e7b5a71d0616bad8b89046cd6611010c1d3509a8b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "301c6f6ee8ce0392d0f4d4e7b5a71d0616bad8b89046cd6611010c1d3509a8b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "301c6f6ee8ce0392d0f4d4e7b5a71d0616bad8b89046cd6611010c1d3509a8b3", kill_on_drop: false }`
[INFO] [stdout] 301c6f6ee8ce0392d0f4d4e7b5a71d0616bad8b89046cd6611010c1d3509a8b3
[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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84ccee0fc8b1798a7f4d73f2eff6e92f25d19a632c7b9433d866fc8ff4562f2a
[INFO] running `Command { std: "docker" "start" "-a" "84ccee0fc8b1798a7f4d73f2eff6e92f25d19a632c7b9433d866fc8ff4562f2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]    Compiling ax-errno v0.4.7
[INFO] [stderr]    Compiling bytemuck v1.25.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]    Compiling extern-trait-impl v0.4.3
[INFO] [stderr]    Compiling extern-trait v0.4.3
[INFO] [stderr]    Compiling strum v0.27.2
[INFO] [stderr]    Compiling starry-vm v0.5.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(maybe_uninit_as_bytes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `starry-vm` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "84ccee0fc8b1798a7f4d73f2eff6e92f25d19a632c7b9433d866fc8ff4562f2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84ccee0fc8b1798a7f4d73f2eff6e92f25d19a632c7b9433d866fc8ff4562f2a", kill_on_drop: false }`
[INFO] [stdout] 84ccee0fc8b1798a7f4d73f2eff6e92f25d19a632c7b9433d866fc8ff4562f2a
