[INFO] cloning repository https://github.com/fakeshadow/actix-web-async-std
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fakeshadow/actix-web-async-std" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffakeshadow%2Factix-web-async-std", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffakeshadow%2Factix-web-async-std'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aefe46c25380b5f101a005ecc4fdb586ead6690f
[INFO] testing fakeshadow/actix-web-async-std against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffakeshadow%2Factix-web-async-std" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fakeshadow/actix-web-async-std on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fakeshadow/actix-web-async-std
[INFO] finished tweaking git repo https://github.com/fakeshadow/actix-web-async-std
[INFO] tweaked toml for git repo https://github.com/fakeshadow/actix-web-async-std written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/fakeshadow/actix-web-async-std already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/hyperium/h2.git`
[INFO] [stderr]     Updating git repository `https://github.com/paolobarbolini/http.git`
[INFO] [stderr]     Updating git repository `https://github.com/bluejekyll/trust-dns`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-openssl v0.5.0
[INFO] [stderr]   Downloaded tokio-rustls v0.20.0
[INFO] [stderr]   Downloaded tokio-util v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 044a73f8c28236639ea23685bd11045e84d88b6bb8b15121b7f3b19cc1a196e1
[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" "044a73f8c28236639ea23685bd11045e84d88b6bb8b15121b7f3b19cc1a196e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "044a73f8c28236639ea23685bd11045e84d88b6bb8b15121b7f3b19cc1a196e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "044a73f8c28236639ea23685bd11045e84d88b6bb8b15121b7f3b19cc1a196e1", kill_on_drop: false }`
[INFO] [stdout] 044a73f8c28236639ea23685bd11045e84d88b6bb8b15121b7f3b19cc1a196e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d55b446a9c58f33bc5e2511f4b361cc89f12cd7a3be8084a066036979839108
[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" "0d55b446a9c58f33bc5e2511f4b361cc89f12cd7a3be8084a066036979839108", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling futures-io v0.3.8
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling fastrand v1.4.0
[INFO] [stderr]    Compiling data-encoding v2.3.1
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling vec-arena v1.0.0
[INFO] [stderr]    Compiling async-task v4.0.3
[INFO] [stderr]    Compiling tokio v0.3.5
[INFO] [stderr]    Compiling actix-service v1.0.6 (https://github.com/fakeshadow/actix-net?branch=private#98799737)
[INFO] [stderr]    Compiling http v0.2.1 (https://github.com/paolobarbolini/http.git?branch=bytes06#82418a89)
[INFO] [stderr]    Compiling tracing v0.1.22
[INFO] [stderr]    Compiling async-channel v1.5.1
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling futures-lite v1.11.2
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling signal-hook-registry v1.2.2
[INFO] [stderr]    Compiling mio v0.7.6
[INFO] [stderr]    Compiling ring v0.16.19
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling parking_lot_core v0.8.1
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling hostname v0.3.1
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling polling v2.0.2
[INFO] [stderr]    Compiling flate2 v1.0.19
[INFO] [stderr]    Compiling socket2 v0.3.17
[INFO] [stderr]    Compiling brotli2 v0.3.2
[INFO] [stderr]    Compiling resolv-conf v0.7.0
[INFO] [stderr]    Compiling async-executor v1.4.0
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling async-io v1.3.1
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling webpki v0.21.4
[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling rustls v0.18.1
[INFO] [stderr]    Compiling webpki-roots v0.20.0
[INFO] [stderr]    Compiling tokio-util v0.5.1
[INFO] [stderr]    Compiling tokio-openssl v0.5.0
[INFO] [stderr]    Compiling async-global-executor v1.4.3
[INFO] [stderr]    Compiling async-std v1.7.0
[INFO] [stderr]    Compiling tokio-rustls v0.20.0
[INFO] [stderr]    Compiling actix-codec v0.3.0 (https://github.com/fakeshadow/actix-net?branch=private#98799737)
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling actix-macros v0.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling actix-web-codegen v0.4.0
[INFO] [stderr]    Compiling actix-rt v1.1.1 (https://github.com/fakeshadow/actix-net?branch=private#98799737)
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling time v0.2.23
[INFO] [stderr]    Compiling thiserror v1.0.22
[INFO] [stderr]    Compiling pin-project v0.4.27
[INFO] [stderr]    Compiling pin-project v1.0.2
[INFO] [stderr]    Compiling tracing-futures v0.2.4
[INFO] [stderr]    Compiling cookie v0.14.3
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling actix-threadpool v0.3.3
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling actix-utils v2.0.0 (https://github.com/fakeshadow/actix-net?branch=private#98799737)
[INFO] [stderr]    Compiling trust-dns-proto v0.20.0-alpha.3 (https://github.com/bluejekyll/trust-dns?branch=main#028ac68e)
[INFO] [stderr]    Compiling h2 v0.3.0 (https://github.com/hyperium/h2.git#dc3079ab)
[INFO] [stderr]    Compiling actix-server v1.0.4 (https://github.com/fakeshadow/actix-net?branch=private#98799737)
[INFO] [stderr]    Compiling actix-tls v2.0.0 (https://github.com/fakeshadow/actix-net?branch=private#98799737)
[INFO] [stderr]    Compiling actix-testing v1.0.1
[INFO] [stderr]    Compiling trust-dns-resolver v0.20.0-alpha.3 (https://github.com/bluejekyll/trust-dns?branch=main#028ac68e)
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling actix-router v0.2.5 (https://github.com/fakeshadow/actix-net?branch=private#98799737)
[INFO] [stderr]    Compiling actix-connect v2.0.0 (https://github.com/fakeshadow/actix-net?branch=private#98799737)
[INFO] [stderr]    Compiling actix-http v2.2.0 (https://github.com/actix/actix-web?branch=async-std#63d45e66)
[INFO] [stderr]    Compiling actix-web v3.3.2 (https://github.com/actix/actix-web?branch=async-std#63d45e66)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/actix-web-02c803d355aed967/63d45e6/src/lib.rs:70:1
[INFO] [stdout]    |
[INFO] [stdout] 70 | #![feature(type_alias_impl_trait)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `actix-web`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "0d55b446a9c58f33bc5e2511f4b361cc89f12cd7a3be8084a066036979839108", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d55b446a9c58f33bc5e2511f4b361cc89f12cd7a3be8084a066036979839108", kill_on_drop: false }`
[INFO] [stdout] 0d55b446a9c58f33bc5e2511f4b361cc89f12cd7a3be8084a066036979839108