[INFO] cloning repository https://github.com/markrepedersen/loblaw
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/markrepedersen/loblaw" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarkrepedersen%2Floblaw", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarkrepedersen%2Floblaw'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f4e91e183ca862fd7b9e034dd3a32be8ea982758
[INFO] testing markrepedersen/loblaw 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%2Fmarkrepedersen%2Floblaw" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/markrepedersen/loblaw 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/markrepedersen/loblaw
[INFO] finished tweaking git repo https://github.com/markrepedersen/loblaw
[INFO] tweaked toml for git repo https://github.com/markrepedersen/loblaw written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/markrepedersen/loblaw 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]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-core v0.1.11
[INFO] [stderr]   Downloaded tracing v0.1.17
[INFO] [stderr]   Downloaded hashbrown v0.8.1
[INFO] [stderr]   Downloaded indexmap v1.5.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.3
[INFO] [stderr]   Downloaded actix v0.10.0-alpha.3
[INFO] [stderr]   Downloaded clocksource v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 0fb96effe961e315f844e2f75bfc370a77327f50135e69449c40ecfe4ecb92a6
[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" "0fb96effe961e315f844e2f75bfc370a77327f50135e69449c40ecfe4ecb92a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fb96effe961e315f844e2f75bfc370a77327f50135e69449c40ecfe4ecb92a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fb96effe961e315f844e2f75bfc370a77327f50135e69449c40ecfe4ecb92a6", kill_on_drop: false }`
[INFO] [stdout] 0fb96effe961e315f844e2f75bfc370a77327f50135e69449c40ecfe4ecb92a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] c0342de46addb062aa60428b05b20802126d141def9b6e7ce395308b395db21d
[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" "c0342de46addb062aa60428b05b20802126d141def9b6e7ce395308b395db21d", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v1.4.1
[INFO] [stderr]    Compiling strum v0.18.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling backtrace v0.3.50
[INFO] [stderr]    Compiling tracing v0.1.17
[INFO] [stderr]    Compiling clocksource v0.5.0
[INFO] [stderr]    Compiling flate2 v1.0.16
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling derive_more v0.99.9
[INFO] [stderr]    Compiling async-trait v0.1.36
[INFO] [stderr]    Compiling chrono v0.4.13
[INFO] [stderr]    Compiling actix_derive v0.5.0
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling thiserror v1.0.20
[INFO] [stderr]    Compiling tokio v0.2.21
[INFO] [stderr]    Compiling parking_lot_core v0.8.0
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling parking_lot v0.11.0
[INFO] [stderr]    Compiling crossbeam-channel v0.4.3
[INFO] [stderr]    Compiling pin-project v0.4.22
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling actix-threadpool v0.3.3
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling actix-router v0.2.4
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling actix-codec v0.2.0
[INFO] [stderr]    Compiling futures-executor v0.3.5
[INFO] [stderr]    Compiling actix-rt v1.1.1
[INFO] [stderr]    Compiling actix-service v1.0.5
[INFO] [stderr]    Compiling h2 v0.2.6
[INFO] [stderr]    Compiling futures v0.3.5
[INFO] [stderr]    Compiling trust-dns-proto v0.18.0-alpha.2
[INFO] [stderr]    Compiling trust-dns-proto v0.19.5
[INFO] [stderr]    Compiling actix-utils v1.0.6
[INFO] [stderr]    Compiling actix-server v1.0.3
[INFO] [stderr]    Compiling actix-tls v1.0.0
[INFO] [stderr]    Compiling actix-testing v1.0.1
[INFO] [stderr]    Compiling trust-dns-resolver v0.18.0-alpha.2
[INFO] [stderr]    Compiling trust-dns-resolver v0.19.5
[INFO] [stderr]    Compiling actix-connect v1.0.2
[INFO] [stderr]    Compiling actix v0.10.0-alpha.3
[INFO] [stderr]    Compiling actix-http v1.0.1
[INFO] [stderr]    Compiling awc v1.0.1
[INFO] [stderr]    Compiling actix-web v2.0.0
[INFO] [stderr]    Compiling loblaw v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(type_alias_impl_trait, async_closure, bool_to_option)]
[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 `loblaw`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "c0342de46addb062aa60428b05b20802126d141def9b6e7ce395308b395db21d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0342de46addb062aa60428b05b20802126d141def9b6e7ce395308b395db21d", kill_on_drop: false }`
[INFO] [stdout] c0342de46addb062aa60428b05b20802126d141def9b6e7ce395308b395db21d