[INFO] fetching crate drogue-tls 0.2.0...
[INFO] testing drogue-tls-0.2.0 against 1.54.0 for beta-1.55-1
[INFO] extracting crate drogue-tls 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate drogue-tls 0.2.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/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-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40ddabd8000701ab70853114ca300ab19069ee76c354b64c0001d87fe52ea9b4
[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" "40ddabd8000701ab70853114ca300ab19069ee76c354b64c0001d87fe52ea9b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40ddabd8000701ab70853114ca300ab19069ee76c354b64c0001d87fe52ea9b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40ddabd8000701ab70853114ca300ab19069ee76c354b64c0001d87fe52ea9b4", kill_on_drop: false }`
[INFO] [stdout] 40ddabd8000701ab70853114ca300ab19069ee76c354b64c0001d87fe52ea9b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8386201c0b241bf431cf8678bab0a6c347e869b5341477c65499cf661d4ce05
[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" "e8386201c0b241bf431cf8678bab0a6c347e869b5341477c65499cf661d4ce05", kill_on_drop: false }`
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling cpuid-bool v0.2.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling zeroize v1.4.1
[INFO] [stderr]    Compiling heapless v0.6.1
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling generic-array v0.13.3
[INFO] [stderr]    Compiling cipher v0.2.5
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling aead v0.3.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling sha2 v0.9.5
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling aes-soft v0.6.4
[INFO] [stderr]    Compiling ctr v0.6.0
[INFO] [stderr]    Compiling universal-hash v0.4.1
[INFO] [stderr]    Compiling crypto-mac v0.10.1
[INFO] [stderr]    Compiling as-slice v0.1.5
[INFO] [stderr]    Compiling polyval v0.4.5
[INFO] [stderr]    Compiling hmac v0.10.1
[INFO] [stderr]    Compiling aes v0.6.0
[INFO] [stderr]    Compiling bitvec v0.20.4
[INFO] [stderr]    Compiling hkdf v0.10.0
[INFO] [stderr]    Compiling ghash v0.3.1
[INFO] [stderr]    Compiling aes-gcm v0.8.0
[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 tokio-macros v1.3.0
[INFO] [stderr]    Compiling drogue-tls v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable 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 stable 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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e8386201c0b241bf431cf8678bab0a6c347e869b5341477c65499cf661d4ce05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8386201c0b241bf431cf8678bab0a6c347e869b5341477c65499cf661d4ce05", kill_on_drop: false }`
[INFO] [stdout] e8386201c0b241bf431cf8678bab0a6c347e869b5341477c65499cf661d4ce05
