[INFO] fetching crate qemu-exit 2.0.1...
[INFO] testing qemu-exit-2.0.1 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate qemu-exit 2.0.1 into /workspace/builds/worker-46/source
[INFO] validating manifest of crates.io crate qemu-exit 2.0.1 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-46/source/.cargo/config
[INFO] started tweaking crates.io crate qemu-exit 2.0.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate qemu-exit 2.0.1
[INFO] tweaked toml for crates.io crate qemu-exit 2.0.1 written to /workspace/builds/worker-46/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19a739bf1e937ea2b44e2d0307ec6b52e0fc71cced2039555ea17e828a71b605
[INFO] running `Command { std: "docker" "start" "-a" "19a739bf1e937ea2b44e2d0307ec6b52e0fc71cced2039555ea17e828a71b605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19a739bf1e937ea2b44e2d0307ec6b52e0fc71cced2039555ea17e828a71b605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19a739bf1e937ea2b44e2d0307ec6b52e0fc71cced2039555ea17e828a71b605", kill_on_drop: false }`
[INFO] [stdout] 19a739bf1e937ea2b44e2d0307ec6b52e0fc71cced2039555ea17e828a71b605
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05669b01895e65c71c60d1b135014d916b5e9773f2bcf90d4c4532a31ec07b5e
[INFO] running `Command { std: "docker" "start" "-a" "05669b01895e65c71c60d1b135014d916b5e9773f2bcf90d4c4532a31ec07b5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling qemu-exit v2.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:73:1
[INFO] [stdout]    |
[INFO] [stdout] 73 | #![feature(asm)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:74:1
[INFO] [stdout]    |
[INFO] [stdout] 74 | #![feature(const_panic)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `qemu-exit` due to 3 previous errors
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "05669b01895e65c71c60d1b135014d916b5e9773f2bcf90d4c4532a31ec07b5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05669b01895e65c71c60d1b135014d916b5e9773f2bcf90d4c4532a31ec07b5e", kill_on_drop: false }`
[INFO] [stdout] 05669b01895e65c71c60d1b135014d916b5e9773f2bcf90d4c4532a31ec07b5e
