[INFO] fetching crate hv-stampede 0.2.1...
[INFO] testing hv-stampede-0.2.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate hv-stampede 0.2.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate hv-stampede 0.2.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hv-stampede 0.2.1
[INFO] finished tweaking crates.io crate hv-stampede 0.2.1
[INFO] tweaked toml for crates.io crate hv-stampede 0.2.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aac9cabfd6edbf52714f1c60b6bff99ad43438974ecad01dbf0bc3efdc82399a
[INFO] running `Command { std: "docker" "start" "-a" "aac9cabfd6edbf52714f1c60b6bff99ad43438974ecad01dbf0bc3efdc82399a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aac9cabfd6edbf52714f1c60b6bff99ad43438974ecad01dbf0bc3efdc82399a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aac9cabfd6edbf52714f1c60b6bff99ad43438974ecad01dbf0bc3efdc82399a", kill_on_drop: false }`
[INFO] [stdout] aac9cabfd6edbf52714f1c60b6bff99ad43438974ecad01dbf0bc3efdc82399a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6a28ff2f1399491e5d18249a41321a957b4d9277e512ea84ad65da3695a74878
[INFO] running `Command { std: "docker" "start" "-a" "6a28ff2f1399491e5d18249a41321a957b4d9277e512ea84ad65da3695a74878", kill_on_drop: false }`
[INFO] [stderr]    Compiling bumpalo v3.9.1
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bumpalo-3.9.1/src/lib.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 |     feature(allocator_api, nonnull_slice_from_raw_parts)
[INFO] [stdout]   |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bumpalo-3.9.1/src/lib.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 |     feature(allocator_api, nonnull_slice_from_raw_parts)
[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 `bumpalo` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "6a28ff2f1399491e5d18249a41321a957b4d9277e512ea84ad65da3695a74878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a28ff2f1399491e5d18249a41321a957b4d9277e512ea84ad65da3695a74878", kill_on_drop: false }`
[INFO] [stdout] 6a28ff2f1399491e5d18249a41321a957b4d9277e512ea84ad65da3695a74878