[INFO] fetching crate lavalink-rs 0.8.0...
[INFO] testing lavalink-rs-0.8.0 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate lavalink-rs 0.8.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate lavalink-rs 0.8.0 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lavalink-rs 0.8.0
[INFO] finished tweaking crates.io crate lavalink-rs 0.8.0
[INFO] tweaked toml for crates.io crate lavalink-rs 0.8.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde-value v0.7.0
[INFO] [stderr]   Downloaded typemap_rev v0.1.5
[INFO] [stderr]   Downloaded serenity v0.10.8
[INFO] [stderr]   Downloaded tokio-native-tls v0.1.0
[INFO] [stderr]   Downloaded command_attr v0.3.7
[INFO] [stderr]   Downloaded serde-aux v2.2.0
[INFO] [stderr]   Downloaded async-tungstenite v0.9.3
[INFO] [stderr]   Downloaded twilight-model v0.3.7
[INFO] [stderr]   Downloaded songbird v0.1.8
[INFO] [stderr]   Downloaded async-tungstenite v0.13.1
[INFO] [stderr]   Downloaded nanorand v0.5.2
[INFO] [stderr]   Downloaded flume v0.10.7
[INFO] [stderr]   Downloaded uwl v0.6.0
[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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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] 56f6cc19aa89e44f989cd7ffa10731b084154210d0a24d5ae8e495c4005bc142
[INFO] running `Command { std: "docker" "start" "-a" "56f6cc19aa89e44f989cd7ffa10731b084154210d0a24d5ae8e495c4005bc142", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56f6cc19aa89e44f989cd7ffa10731b084154210d0a24d5ae8e495c4005bc142", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56f6cc19aa89e44f989cd7ffa10731b084154210d0a24d5ae8e495c4005bc142", kill_on_drop: false }`
[INFO] [stdout] 56f6cc19aa89e44f989cd7ffa10731b084154210d0a24d5ae8e495c4005bc142
[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=forbid" "-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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--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] 30cc68225d3b78295d1d86be46a9ed6fb65d51d958b487cbf8aab48e5ca00f3d
[INFO] running `Command { std: "docker" "start" "-a" "30cc68225d3b78295d1d86be46a9ed6fb65d51d958b487cbf8aab48e5ca00f3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling serenity v0.10.8
[INFO] [stderr]    Compiling uwl v0.6.0
[INFO] [stderr]    Compiling songbird v0.1.8
[INFO] [stderr]    Compiling typemap_rev v0.1.5
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling lavalink-rs v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stdout] error: Please specify a feature, either `rustls` or `native`
[INFO] [stdout]  --> build.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | compile_error!("Please specify a feature, either `rustls` or `native`");
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tracing-core v0.1.18
[INFO] [stderr] error: could not compile `lavalink-rs` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "30cc68225d3b78295d1d86be46a9ed6fb65d51d958b487cbf8aab48e5ca00f3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30cc68225d3b78295d1d86be46a9ed6fb65d51d958b487cbf8aab48e5ca00f3d", kill_on_drop: false }`
[INFO] [stdout] 30cc68225d3b78295d1d86be46a9ed6fb65d51d958b487cbf8aab48e5ca00f3d