[INFO] fetching crate mpv 0.2.3...
[INFO] checking mpv-0.2.3 against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] extracting crate mpv 0.2.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mpv 0.2.3 on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mpv 0.2.3
[INFO] finished tweaking crates.io crate mpv 0.2.3
[INFO] tweaked toml for crates.io crate mpv 0.2.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+b61e69433951e31f7bd746e22f516a48ad41623b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 5533a138bae0b3fd1eac8c645ead7c751776c727f7483fe7cb5858e6e43c57a5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "5533a138bae0b3fd1eac8c645ead7c751776c727f7483fe7cb5858e6e43c57a5"`
[INFO] [stderr]    Compiling sdl2-sys v0.27.3
[INFO] [stderr]     Checking mpv v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking sdl2 v0.27.3
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/sdl2.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         mpv_builder.try_hardware_decoding();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.15s
[INFO] running `"docker" "inspect" "5533a138bae0b3fd1eac8c645ead7c751776c727f7483fe7cb5858e6e43c57a5"`
[INFO] running `"docker" "rm" "-f" "5533a138bae0b3fd1eac8c645ead7c751776c727f7483fe7cb5858e6e43c57a5"`
[INFO] [stdout] 5533a138bae0b3fd1eac8c645ead7c751776c727f7483fe7cb5858e6e43c57a5