[INFO] fetching crate rspotify 0.6.0... [INFO] checking rspotify-0.6.0 against try#38f08371587f97c145dedb2c055ac7b01bf1e788 for pr-65294 [INFO] extracting crate rspotify 0.6.0 into /workspace/builds/worker-7/source [INFO] validating manifest of crates.io crate rspotify 0.6.0 on toolchain 38f08371587f97c145dedb2c055ac7b01bf1e788 [INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate rspotify 0.6.0 [INFO] finished tweaking crates.io crate rspotify 0.6.0 [INFO] tweaked toml for crates.io crate rspotify 0.6.0 written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate crates.io crate rspotify 0.6.0 already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Updating crates.io index [INFO] [stderr] error: the lock file /workspace/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] the lockfile is outdated, regenerating it [INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/workspace/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded c2-chacha v0.2.3 [INFO] [stderr] Downloaded ppv-lite86 v0.2.6 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+38f08371587f97c145dedb2c055ac7b01bf1e788" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 66724858e5f7ff307186ea60251bcb784250e9d8fd9ce96dfe4360ff3e6f011c [INFO] running `"docker" "start" "-a" "66724858e5f7ff307186ea60251bcb784250e9d8fd9ce96dfe4360ff3e6f011c"` [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking random v0.12.2 [INFO] [stderr] Checking webbrowser v0.5.2 [INFO] [stderr] Checking tokio-reactor v0.1.10 [INFO] [stderr] Checking chrono v0.4.9 [INFO] [stderr] Checking dotenv v0.13.0 [INFO] [stderr] Checking tokio-tcp v0.1.3 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking hyper v0.12.35 [INFO] [stderr] Checking hyper-tls v0.3.2 [INFO] [stderr] Checking reqwest v0.9.22 [INFO] [stderr] Compiling darling_core v0.9.0 [INFO] [stderr] Compiling darling_macro v0.9.0 [INFO] [stderr] Compiling darling v0.9.0 [INFO] [stderr] Compiling derive_builder_core v0.5.0 [INFO] [stderr] Compiling derive_builder v0.7.2 [INFO] [stderr] Checking rspotify v0.6.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/spotify/client.rs:140:17 [INFO] [stderr] | [INFO] [stderr] 140 | let mut builder = CLIENT [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/spotify/client.rs:140:17 [INFO] [stderr] | [INFO] [stderr] 140 | let mut builder = CLIENT [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> examples/user_playlist_change_detail.rs:40:17 [INFO] [stderr] | [INFO] [stderr] 40 | let mut playlist_name = "A New Playlist-update"; [INFO] [stderr] | ----^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> examples/start_playback.rs:40:17 [INFO] [stderr] | [INFO] [stderr] 40 | let mut uris = vec!["spotify:track:4iV5W9uYEdYUVa79Axb7Rh".to_owned()]; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> tests/test_with_oauth.rs:661:17 [INFO] [stderr] | [INFO] [stderr] 661 | let mut uris = vec!["spotify:track:4iV5W9uYEdYUVa79Axb7Rh".to_owned()]; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> tests/test_with_oauth.rs:824:17 [INFO] [stderr] | [INFO] [stderr] 824 | let mut playlist_name = "A New Playlist-update"; [INFO] [stderr] | ----^^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 41s [INFO] running `"docker" "inspect" "66724858e5f7ff307186ea60251bcb784250e9d8fd9ce96dfe4360ff3e6f011c"` [INFO] running `"docker" "rm" "-f" "66724858e5f7ff307186ea60251bcb784250e9d8fd9ce96dfe4360ff3e6f011c"` [INFO] [stdout] 66724858e5f7ff307186ea60251bcb784250e9d8fd9ce96dfe4360ff3e6f011c