[INFO] fetching crate gba 0.4.0...
[INFO] testing gba-0.4.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate gba 0.4.0 into /workspace/builds/worker-36/source
[INFO] validating manifest of crates.io crate gba 0.4.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-36/source/.cargo/config.toml
[INFO] started tweaking crates.io crate gba 0.4.0
[INFO] finished tweaking crates.io crate gba 0.4.0
[INFO] tweaked toml for crates.io crate gba 0.4.0 written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] crate crates.io crate gba 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nb v1.0.0
[INFO] [stderr]   Downloaded embedded-hal v0.2.4
[INFO] [stderr]   Downloaded nb v0.1.3
[INFO] [stderr]   Downloaded voladdress v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d54950895f11cde8376568c2ab08eda8a68caf96f5ded90c2d1ed1b663a14c2d
[INFO] running `Command { std: "docker" "start" "-a" "d54950895f11cde8376568c2ab08eda8a68caf96f5ded90c2d1ed1b663a14c2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d54950895f11cde8376568c2ab08eda8a68caf96f5ded90c2d1ed1b663a14c2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d54950895f11cde8376568c2ab08eda8a68caf96f5ded90c2d1ed1b663a14c2d", kill_on_drop: false }`
[INFO] [stdout] d54950895f11cde8376568c2ab08eda8a68caf96f5ded90c2d1ed1b663a14c2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fd9a90e74ad4a546cf3a9a7639695b0d54269a1b5c5b6efb98295141b1e89d5
[INFO] running `Command { std: "docker" "start" "-a" "4fd9a90e74ad4a546cf3a9a7639695b0d54269a1b5c5b6efb98295141b1e89d5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling gba v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling voladdress v0.4.0
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(asm, global_asm, isa_attribute)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gba` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4fd9a90e74ad4a546cf3a9a7639695b0d54269a1b5c5b6efb98295141b1e89d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fd9a90e74ad4a546cf3a9a7639695b0d54269a1b5c5b6efb98295141b1e89d5", kill_on_drop: false }`
[INFO] [stdout] 4fd9a90e74ad4a546cf3a9a7639695b0d54269a1b5c5b6efb98295141b1e89d5