[INFO] fetching crate hv-stampede 0.2.1...
[INFO] documenting hv-stampede-0.2.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate hv-stampede 0.2.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate hv-stampede 0.2.1 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "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-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "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] 3f4e01aa8f5934b0be44b4b812e05d60e33ff063d20e1dbe10ce059db3ff503e
[INFO] running `Command { std: "docker" "start" "-a" "3f4e01aa8f5934b0be44b4b812e05d60e33ff063d20e1dbe10ce059db3ff503e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f4e01aa8f5934b0be44b4b812e05d60e33ff063d20e1dbe10ce059db3ff503e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f4e01aa8f5934b0be44b4b812e05d60e33ff063d20e1dbe10ce059db3ff503e", kill_on_drop: false }`
[INFO] [stdout] 3f4e01aa8f5934b0be44b4b812e05d60e33ff063d20e1dbe10ce059db3ff503e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] e8fc523b1d46a03e0013742ae534d2c7060f09cdb8daf9509b963254f17846e9
[INFO] running `Command { std: "docker" "start" "-a" "e8fc523b1d46a03e0013742ae534d2c7060f09cdb8daf9509b963254f17846e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking bumpalo v3.9.1
[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] [stderr]    Compiling lock_api v0.4.7
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e8fc523b1d46a03e0013742ae534d2c7060f09cdb8daf9509b963254f17846e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8fc523b1d46a03e0013742ae534d2c7060f09cdb8daf9509b963254f17846e9", kill_on_drop: false }`
[INFO] [stdout] e8fc523b1d46a03e0013742ae534d2c7060f09cdb8daf9509b963254f17846e9