[INFO] fetching crate drogue-tls 0.2.0...
[INFO] testing drogue-tls-0.2.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate drogue-tls 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate drogue-tls 0.2.0 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-2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate drogue-tls 0.2.0
[INFO] finished tweaking crates.io crate drogue-tls 0.2.0
[INFO] tweaked toml for crates.io crate drogue-tls 0.2.0 written to /workspace/builds/worker-2/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]  Downloading crates ...
[INFO] [stderr]   Downloaded defmt-parser v0.2.2
[INFO] [stderr]   Downloaded defmt-macros v0.2.3
[INFO] [stderr]   Downloaded ff v0.9.0
[INFO] [stderr]   Downloaded defmt v0.2.3
[INFO] [stderr]   Downloaded rustls-pemfile v0.2.1
[INFO] [stderr]   Downloaded group v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 8ea9cf0bc7bc6692cbdf1b733f9d583fd73c36cbe1e38c6c1203949e0d31a65f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8ea9cf0bc7bc6692cbdf1b733f9d583fd73c36cbe1e38c6c1203949e0d31a65f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ea9cf0bc7bc6692cbdf1b733f9d583fd73c36cbe1e38c6c1203949e0d31a65f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ea9cf0bc7bc6692cbdf1b733f9d583fd73c36cbe1e38c6c1203949e0d31a65f", kill_on_drop: false }`
[INFO] [stdout] 8ea9cf0bc7bc6692cbdf1b733f9d583fd73c36cbe1e38c6c1203949e0d31a65f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] fa2099b834408e7519bdbe00203e005757a634736f819034b1cd822deefdf048
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fa2099b834408e7519bdbe00203e005757a634736f819034b1cd822deefdf048", kill_on_drop: false }`
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling zeroize v1.4.1
[INFO] [stderr]    Compiling heapless v0.6.1
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling aead v0.3.2
[INFO] [stderr]    Compiling sha2 v0.9.5
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling universal-hash v0.4.1
[INFO] [stderr]    Compiling crypto-mac v0.10.1
[INFO] [stderr]    Compiling polyval v0.4.5
[INFO] [stderr]    Compiling hmac v0.10.1
[INFO] [stderr]    Compiling hkdf v0.10.0
[INFO] [stderr]    Compiling ghash v0.3.1
[INFO] [stderr]    Compiling bitvec v0.20.4
[INFO] [stderr]    Compiling aes-gcm v0.8.0
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling ff v0.9.0
[INFO] [stderr]    Compiling group v0.9.0
[INFO] [stderr]    Compiling elliptic-curve v0.9.12
[INFO] [stderr]    Compiling p256 v0.8.1
[INFO] [stderr]    Compiling drogue-tls v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:32
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![cfg_attr(feature = "async", feature(generic_associated_types))]
[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:6:32
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "async", feature(min_type_alias_impl_trait))]
[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 `drogue-tls` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fa2099b834408e7519bdbe00203e005757a634736f819034b1cd822deefdf048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa2099b834408e7519bdbe00203e005757a634736f819034b1cd822deefdf048", kill_on_drop: false }`
[INFO] [stdout] fa2099b834408e7519bdbe00203e005757a634736f819034b1cd822deefdf048
