[INFO] fetching crate lavalink-rs 0.9.0-rc.2... [INFO] testing lavalink-rs-0.9.0-rc.2 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031 [INFO] extracting crate lavalink-rs 0.9.0-rc.2 into /workspace/builds/worker-13/source [INFO] validating manifest of crates.io crate lavalink-rs 0.9.0-rc.2 on toolchain 722e1797249a965b6335aebd65d777f917e498f1 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate lavalink-rs 0.9.0-rc.2 [INFO] finished tweaking crates.io crate lavalink-rs 0.9.0-rc.2 [INFO] tweaked toml for crates.io crate lavalink-rs 0.9.0-rc.2 written to /workspace/builds/worker-13/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded ordered-float v2.8.0 [INFO] [stderr] Downloaded typemap_rev v0.1.5 [INFO] [stderr] Downloaded uwl v0.6.0 [INFO] [stderr] Downloaded symphonia-core v0.2.0 [INFO] [stderr] Downloaded nanorand v0.6.1 [INFO] [stderr] Downloaded spin v0.9.2 [INFO] [stderr] Downloaded async-tungstenite v0.11.0 [INFO] [stderr] Downloaded serde-aux v2.3.0 [INFO] [stderr] Downloaded async-tungstenite v0.14.0 [INFO] [stderr] Downloaded serde-value v0.7.0 [INFO] [stderr] Downloaded serenity v0.10.9 [INFO] [stderr] Downloaded songbird v0.2.0 [INFO] [stderr] Downloaded twilight-model v0.6.5 [INFO] [stderr] Downloaded command_attr v0.3.7 [INFO] [stderr] Downloaded flume v0.10.9 [INFO] [stderr] Downloaded webpki-roots v0.20.0 [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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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] 1fc6f2f3de66ab45f66933afe8a22a36bfe84191e558de41c990acbd90f8c15b [INFO] running `Command { std: "docker" "start" "-a" "1fc6f2f3de66ab45f66933afe8a22a36bfe84191e558de41c990acbd90f8c15b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1fc6f2f3de66ab45f66933afe8a22a36bfe84191e558de41c990acbd90f8c15b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1fc6f2f3de66ab45f66933afe8a22a36bfe84191e558de41c990acbd90f8c15b", kill_on_drop: false }` [INFO] [stdout] 1fc6f2f3de66ab45f66933afe8a22a36bfe84191e558de41c990acbd90f8c15b [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=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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9b8b5ad38065750ef6a12a2c5fa5d050e4ada19aad5036695552c9a6963ff79f [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" "9b8b5ad38065750ef6a12a2c5fa5d050e4ada19aad5036695552c9a6963ff79f", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.107 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling version_check v0.9.3 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling once_cell v1.8.0 [INFO] [stderr] Compiling bytes v1.1.0 [INFO] [stderr] Compiling itoa v0.4.8 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling parking_lot_core v0.8.5 [INFO] [stderr] Compiling smallvec v1.7.0 [INFO] [stderr] Compiling base64 v0.13.0 [INFO] [stderr] Compiling serde_derive v1.0.130 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling serde v1.0.130 [INFO] [stderr] Compiling byteorder v1.4.3 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling hashbrown v0.11.2 [INFO] [stderr] Compiling serde_json v1.0.71 [INFO] [stderr] Compiling serenity v0.10.9 [INFO] [stderr] Compiling songbird v0.2.0 [INFO] [stderr] Compiling uwl v0.6.0 [INFO] [stderr] Compiling typemap_rev v0.1.5 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling ring v0.16.20 [INFO] [stderr] Compiling instant v0.1.12 [INFO] [stderr] Compiling lock_api v0.4.5 [INFO] [stderr] Compiling tracing-core v0.1.21 [INFO] [stderr] Compiling input_buffer v0.3.1 [INFO] [stderr] Compiling encoding_rs v0.8.29 [INFO] [stderr] Compiling crc32fast v1.2.1 [INFO] [stderr] Compiling http v0.2.5 [INFO] [stderr] Compiling input_buffer v0.4.0 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling futures-channel v0.3.17 [INFO] [stderr] Compiling futures-macro v0.3.17 [INFO] [stderr] Compiling tokio v1.14.0 [INFO] [stderr] Compiling futures-util v0.3.17 [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 syn v1.0.81 [INFO] [stderr] Compiling spin v0.9.2 [INFO] [stderr] Compiling url v2.2.2 [INFO] [stderr] Compiling generic-array v0.14.4 [INFO] [stderr] Compiling unicase v2.6.0 [INFO] [stderr] Compiling lavalink-rs v0.9.0-rc.2 (/opt/rustwide/workdir) [INFO] [stderr] Compiling want v0.3.0 [INFO] [stderr] Compiling symphonia-core v0.2.0 [INFO] [stderr] Compiling mime_guess v2.0.3 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling mio v0.7.14 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling getrandom v0.1.16 [INFO] [stderr] Compiling socket2 v0.4.2 [INFO] [stderr] Compiling time v0.1.43 [INFO] [stderr] Compiling flate2 v1.0.22 [INFO] [stderr] Compiling digest v0.9.0 [INFO] [stderr] Compiling block-buffer v0.9.0 [INFO] [stderr] Compiling dashmap v4.0.2 [INFO] [stderr] Compiling parking_lot v0.11.2 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling nanorand v0.6.1 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling sha-1 v0.9.8 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling http-body v0.4.4 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Compiling rand v0.8.4 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling webpki v0.21.4 [INFO] [stderr] Compiling sct v0.6.1 [INFO] [stderr] Compiling rustls v0.19.1 [INFO] [stderr] Compiling webpki-roots v0.21.1 [INFO] [stderr] Compiling webpki-roots v0.20.0 [INFO] [stderr] Compiling tungstenite v0.11.1 [INFO] [stderr] Compiling tokio-macros v1.6.0 [INFO] [stderr] Compiling tracing-attributes v0.1.18 [INFO] [stderr] Compiling pin-project-internal v1.0.8 [INFO] [stderr] Compiling thiserror-impl v1.0.30 [INFO] [stderr] Compiling command_attr v0.3.7 [INFO] [stderr] Compiling async-trait v0.1.51 [INFO] [stderr] Compiling thiserror v1.0.30 [INFO] [stderr] Compiling tungstenite v0.13.0 [INFO] [stderr] Compiling tungstenite v0.15.0 [INFO] [stderr] Compiling tracing v0.1.29 [INFO] [stderr] Compiling pin-project v1.0.8 [INFO] [stderr] Compiling flume v0.10.9 [INFO] [stderr] Compiling tracing-futures v0.2.5 [INFO] [stderr] Compiling futures-executor v0.3.17 [INFO] [stderr] Compiling futures v0.3.17 [INFO] [stderr] Compiling tokio-rustls v0.22.0 [INFO] [stderr] Compiling tokio-util v0.6.9 [INFO] [stderr] Compiling async-tungstenite v0.11.0 [INFO] [stderr] Compiling async-tungstenite v0.14.0 [INFO] [stderr] Compiling async-tungstenite v0.15.0 [INFO] [stderr] Compiling h2 v0.3.7 [INFO] [stderr] Compiling chrono v0.4.19 [INFO] [stderr] Compiling serde_urlencoded v0.7.0 [INFO] [stderr] Compiling serde-aux v2.3.0 [INFO] [stderr] Compiling hyper v0.14.15 [INFO] [stderr] Compiling hyper-rustls v0.22.1 [INFO] [stderr] Compiling reqwest v0.11.6 [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2m 20s [INFO] running `Command { std: "docker" "inspect" "9b8b5ad38065750ef6a12a2c5fa5d050e4ada19aad5036695552c9a6963ff79f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9b8b5ad38065750ef6a12a2c5fa5d050e4ada19aad5036695552c9a6963ff79f", kill_on_drop: false }` [INFO] [stdout] 9b8b5ad38065750ef6a12a2c5fa5d050e4ada19aad5036695552c9a6963ff79f [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=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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dd2ad230a19aa256cabfafd743e1e20dd1733bc3765c27987278b97989a69472 [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" "dd2ad230a19aa256cabfafd743e1e20dd1733bc3765c27987278b97989a69472", kill_on_drop: false }` [INFO] [stderr] Compiling ansi_term v0.12.1 [INFO] [stderr] Compiling thread_local v1.1.3 [INFO] [stderr] Compiling sharded-slab v0.1.4 [INFO] [stderr] Compiling regex-automata v0.1.10 [INFO] [stderr] Compiling tracing-log v0.1.2 [INFO] [stderr] Compiling tracing-serde v0.1.2 [INFO] [stderr] Compiling matchers v0.0.1 [INFO] [stderr] Compiling tracing-subscriber v0.2.25 [INFO] [stderr] Compiling lavalink-rs v0.9.0-rc.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 5.33s [INFO] running `Command { std: "docker" "inspect" "dd2ad230a19aa256cabfafd743e1e20dd1733bc3765c27987278b97989a69472", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dd2ad230a19aa256cabfafd743e1e20dd1733bc3765c27987278b97989a69472", kill_on_drop: false }` [INFO] [stdout] dd2ad230a19aa256cabfafd743e1e20dd1733bc3765c27987278b97989a69472 [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=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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 3ee6ee7a2994b887009d0fe2ca622eb2a524f757967afd103030e9e3527bcdf2 [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" "3ee6ee7a2994b887009d0fe2ca622eb2a524f757967afd103030e9e3527bcdf2", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.09s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/lavalink_rs-f88f7f2f8a95ca57) [INFO] [stdout] [INFO] [stderr] Doc-tests lavalink-rs [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/lib.rs - LavalinkClient::destroy (line 448) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - LavalinkClient::destroy (line 448) stdout ---- [INFO] [stdout] error[E0425]: cannot find value `lavalink_client` in this scope [INFO] [stdout] --> src/lib.rs:449:1 [INFO] [stdout] | [INFO] [stdout] 3 | lavalink_client.destroy(guild_id).await?; [INFO] [stdout] | ^^^^^^^^^^^^^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find value `guild_id` in this scope [INFO] [stdout] --> src/lib.rs:449:25 [INFO] [stdout] | [INFO] [stdout] 3 | lavalink_client.destroy(guild_id).await?; [INFO] [stdout] | ^^^^^^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find value `lavalink_client` in this scope [INFO] [stdout] --> src/lib.rs:452:17 [INFO] [stdout] | [INFO] [stdout] 6 | let nodes = lavalink_client.nodes().await; [INFO] [stdout] | ^^^^^^^^^^^^^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find value `guild_id` in this scope [INFO] [stdout] --> src/lib.rs:453:19 [INFO] [stdout] | [INFO] [stdout] 7 | nodes.remove(&guild_id.0); [INFO] [stdout] | ^^^^^^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find value `lavalink_client` in this scope [INFO] [stdout] --> src/lib.rs:455:17 [INFO] [stdout] | [INFO] [stdout] 9 | let loops = lavalink_client.loops().await; [INFO] [stdout] | ^^^^^^^^^^^^^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] error[E0425]: cannot find value `guild_id` in this scope [INFO] [stdout] --> src/lib.rs:456:19 [INFO] [stdout] | [INFO] [stdout] 10 | loops.remove(&guild_id.0); [INFO] [stdout] | ^^^^^^^^ not found in this scope [INFO] [stdout] [INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks [INFO] [stdout] --> src/lib.rs:449:1 [INFO] [stdout] | [INFO] [stdout] 2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_448_0() { [INFO] [stdout] | ------------------------------ this is not `async` [INFO] [stdout] 3 | lavalink_client.destroy(guild_id).await?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks [INFO] [stdout] [INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks [INFO] [stdout] --> src/lib.rs:452:17 [INFO] [stdout] | [INFO] [stdout] 2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_448_0() { [INFO] [stdout] | ------------------------------ this is not `async` [INFO] [stdout] ... [INFO] [stdout] 6 | let nodes = lavalink_client.nodes().await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks [INFO] [stdout] [INFO] [stdout] error[E0728]: `await` is only allowed inside `async` functions and blocks [INFO] [stdout] --> src/lib.rs:455:17 [INFO] [stdout] | [INFO] [stdout] 2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_448_0() { [INFO] [stdout] | ------------------------------ this is not `async` [INFO] [stdout] ... [INFO] [stdout] 9 | let loops = lavalink_client.loops().await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only allowed inside `async` functions and blocks [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> src/lib.rs:449:40 [INFO] [stdout] | [INFO] [stdout] 2 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_448_0() { [INFO] [stdout] | ______________________________________- [INFO] [stdout] 3 | | lavalink_client.destroy(guild_id).await?; [INFO] [stdout] | | ^ cannot use the `?` operator in a function that returns `()` [INFO] [stdout] 4 | | [INFO] [stdout] 5 | | { [INFO] [stdout] ... | [INFO] [stdout] 11 | | } [INFO] [stdout] 12 | | } _doctest_main_src_lib_rs_448_0() } [INFO] [stdout] | |_- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual<_>` is not implemented for `()` [INFO] [stdout] note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] error: aborting due to 10 previous errors [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0277, E0425, E0728. [INFO] [stdout] For more information about an error, try `rustc --explain E0277`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - LavalinkClient::destroy (line 448) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.67s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] running `Command { std: "docker" "inspect" "3ee6ee7a2994b887009d0fe2ca622eb2a524f757967afd103030e9e3527bcdf2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3ee6ee7a2994b887009d0fe2ca622eb2a524f757967afd103030e9e3527bcdf2", kill_on_drop: false }` [INFO] [stdout] 3ee6ee7a2994b887009d0fe2ca622eb2a524f757967afd103030e9e3527bcdf2