[INFO] fetching crate drumbeat 0.1.1...
[INFO] testing drumbeat-0.1.1 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate drumbeat 0.1.1 into /workspace/builds/worker-72/source
[INFO] validating manifest of crates.io crate drumbeat 0.1.1 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate drumbeat 0.1.1
[INFO] finished tweaking crates.io crate drumbeat 0.1.1
[INFO] tweaked toml for crates.io crate drumbeat 0.1.1 written to /workspace/builds/worker-72/source/Cargo.toml
[INFO] crate crates.io crate drumbeat 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da5c1d062cd012e349489c7d100ddfb07c6bb4ecf6b11deebf663fa1eaa386aa
[INFO] running `Command { std: "docker" "start" "-a" "da5c1d062cd012e349489c7d100ddfb07c6bb4ecf6b11deebf663fa1eaa386aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da5c1d062cd012e349489c7d100ddfb07c6bb4ecf6b11deebf663fa1eaa386aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da5c1d062cd012e349489c7d100ddfb07c6bb4ecf6b11deebf663fa1eaa386aa", kill_on_drop: false }`
[INFO] [stdout] da5c1d062cd012e349489c7d100ddfb07c6bb4ecf6b11deebf663fa1eaa386aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51c39f4f5ec438c512d4a1a2f285ca2ae51327e0083049356ece160b19e39fe3
[INFO] running `Command { std: "docker" "start" "-a" "51c39f4f5ec438c512d4a1a2f285ca2ae51327e0083049356ece160b19e39fe3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling drumbeat v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(negative_impls)]
[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:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(async_closure)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stderr] error: could not compile `drumbeat` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "51c39f4f5ec438c512d4a1a2f285ca2ae51327e0083049356ece160b19e39fe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51c39f4f5ec438c512d4a1a2f285ca2ae51327e0083049356ece160b19e39fe3", kill_on_drop: false }`
[INFO] [stdout] 51c39f4f5ec438c512d4a1a2f285ca2ae51327e0083049356ece160b19e39fe3