[INFO] fetching crate mpv 0.2.3...
[INFO] checking mpv-0.2.3 against beta for pr-78714
[INFO] extracting crate mpv 0.2.3 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate mpv 0.2.3 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3170432235959e4f41d6c7c6858705a2888b3ebc1ad981441bf82fbb4f63c7a
[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" "e3170432235959e4f41d6c7c6858705a2888b3ebc1ad981441bf82fbb4f63c7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3170432235959e4f41d6c7c6858705a2888b3ebc1ad981441bf82fbb4f63c7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3170432235959e4f41d6c7c6858705a2888b3ebc1ad981441bf82fbb4f63c7a", kill_on_drop: false }`
[INFO] [stdout] e3170432235959e4f41d6c7c6858705a2888b3ebc1ad981441bf82fbb4f63c7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--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] 08f880bfde686ae732d69078780c1e6437c44c46174805830dd21b77393d8fdf
[INFO] running `Command { std: "docker" "start" "-a" "08f880bfde686ae732d69078780c1e6437c44c46174805830dd21b77393d8fdf", kill_on_drop: false }`
[INFO] [stderr]    Compiling sdl2-sys v0.27.3
[INFO] [stderr]     Checking mpv v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mpv_error.rs:20:37
[INFO] [stdout]    |
[INFO] [stdout] 20 |         write!(f, "{} ({:?})", self.description(), self)
[INFO] [stdout]    |                                     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking sdl2 v0.27.3
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/mpv_error.rs:20:37
[INFO] [stdout]    |
[INFO] [stdout] 20 |         write!(f, "{} ({:?})", self.description(), self)
[INFO] [stdout]    |                                     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> examples/sdl2.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         mpv_builder.try_hardware_decoding();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.24s
[INFO] running `Command { std: "docker" "inspect" "08f880bfde686ae732d69078780c1e6437c44c46174805830dd21b77393d8fdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08f880bfde686ae732d69078780c1e6437c44c46174805830dd21b77393d8fdf", kill_on_drop: false }`
[INFO] [stdout] 08f880bfde686ae732d69078780c1e6437c44c46174805830dd21b77393d8fdf