[INFO] fetching crate lavalink-rs 0.8.0...
[INFO] testing lavalink-rs-0.8.0 against 1.54.0 for beta-1.55-1
[INFO] extracting crate lavalink-rs 0.8.0 into /workspace/builds/worker-36/source
[INFO] validating manifest of crates.io crate lavalink-rs 0.8.0 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] 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-36/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] [stderr]     Blocking waiting for file lock on package cache
[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-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] afde3ae2e83df3575f4a6cd494a79710517d984a9d80d9f53296c8a814742108
[INFO] running `Command { std: "docker" "start" "-a" "afde3ae2e83df3575f4a6cd494a79710517d984a9d80d9f53296c8a814742108", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afde3ae2e83df3575f4a6cd494a79710517d984a9d80d9f53296c8a814742108", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afde3ae2e83df3575f4a6cd494a79710517d984a9d80d9f53296c8a814742108", kill_on_drop: false }`
[INFO] [stdout] afde3ae2e83df3575f4a6cd494a79710517d984a9d80d9f53296c8a814742108
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] b2902e924d6b6ad02bc827509f6dbbf885b015de200870a15fa5982786437145
[INFO] running `Command { std: "docker" "start" "-a" "b2902e924d6b6ad02bc827509f6dbbf885b015de200870a15fa5982786437145", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling futures-sink v0.3.16
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling httparse v1.4.1
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling cpufeatures v0.1.5
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling httpdate v1.0.1
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling ipnet v2.3.1
[INFO] [stderr]    Compiling serenity v0.10.8
[INFO] [stderr]    Compiling static_assertions v1.1.0
[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 regex-syntax v0.6.25
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling tracing-core v0.1.18
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling tinyvec v1.3.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.5
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling http v0.2.4
[INFO] [stderr]    Compiling input_buffer v0.4.0
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling input_buffer v0.3.1
[INFO] [stderr]    Compiling tracing-log v0.1.2
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling lavalink-rs v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling spinning_top v0.2.2
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling quote v1.0.9
[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] error: could not compile `lavalink-rs`
[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" "b2902e924d6b6ad02bc827509f6dbbf885b015de200870a15fa5982786437145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2902e924d6b6ad02bc827509f6dbbf885b015de200870a15fa5982786437145", kill_on_drop: false }`
[INFO] [stdout] b2902e924d6b6ad02bc827509f6dbbf885b015de200870a15fa5982786437145
