[INFO] fetching crate gst-plugin-fallbackswitch 0.6.0...
[INFO] checking gst-plugin-fallbackswitch-0.6.0 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate gst-plugin-fallbackswitch 0.6.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate gst-plugin-fallbackswitch 0.6.0 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gst-plugin-fallbackswitch 0.6.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate gst-plugin-fallbackswitch 0.6.0
[INFO] tweaked toml for crates.io crate gst-plugin-fallbackswitch 0.6.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate gst-plugin-fallbackswitch 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "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] 50ed9b75fcb5cc09cd6a93f4897c7d21cc16e6e8385d5ed4d74de73e2d6cdb4a
[INFO] running `Command { std: "docker" "start" "-a" "50ed9b75fcb5cc09cd6a93f4897c7d21cc16e6e8385d5ed4d74de73e2d6cdb4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50ed9b75fcb5cc09cd6a93f4897c7d21cc16e6e8385d5ed4d74de73e2d6cdb4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50ed9b75fcb5cc09cd6a93f4897c7d21cc16e6e8385d5ed4d74de73e2d6cdb4a", kill_on_drop: false }`
[INFO] [stdout] 50ed9b75fcb5cc09cd6a93f4897c7d21cc16e6e8385d5ed4d74de73e2d6cdb4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 042e9fa72c4c10fd0d4aea3363db6915f15ad95afc19b6c64e6ff806c682c85e
[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" "042e9fa72c4c10fd0d4aea3363db6915f15ad95afc19b6c64e6ff806c682c85e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gstreamer v0.16.1
[INFO] [stderr]    Compiling gstreamer-base v0.16.0
[INFO] [stderr]    Compiling gstreamer-audio v0.16.0
[INFO] [stderr]    Compiling gstreamer-video v0.16.0
[INFO] [stderr]    Compiling gstreamer-app v0.16.0
[INFO] [stderr]     Checking array-init v0.1.1
[INFO] [stderr]    Compiling gstreamer-check v0.16.0
[INFO] [stderr]    Compiling gstreamer-sys v0.9.0
[INFO] [stderr]    Compiling gstreamer-base-sys v0.9.0
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]    Compiling gstreamer-audio-sys v0.9.0
[INFO] [stderr]    Compiling gstreamer-video-sys v0.9.0
[INFO] [stderr]    Compiling gstreamer-check-sys v0.9.0
[INFO] [stderr]    Compiling gstreamer-app-sys v0.9.0
[INFO] [stderr]    Compiling gst-plugin-fallbackswitch v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking gobject-sys v0.10.0
[INFO] [stderr]     Checking glib v0.10.1
[INFO] [stderr] error: failed to run custom build command for `gstreamer-audio-sys v0.9.0`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/gstreamer-audio-sys-3974efe73beff401/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   `"pkg-config" "--libs" "--cflags" "gstreamer-audio-1.0" "gstreamer-audio-1.0 >= 1.14"` did not exit successfully: exit status: 1
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Package gstreamer-audio-1.0 was not found in the pkg-config search path.
[INFO] [stderr]   Perhaps you should add the directory containing `gstreamer-audio-1.0.pc'
[INFO] [stderr]   to the PKG_CONFIG_PATH environment variable
[INFO] [stderr]   No package 'gstreamer-audio-1.0' found
[INFO] [stderr]   Package gstreamer-audio-1.0 was not found in the pkg-config search path.
[INFO] [stderr]   Perhaps you should add the directory containing `gstreamer-audio-1.0.pc'
[INFO] [stderr]   to the PKG_CONFIG_PATH environment variable
[INFO] [stderr]   No package 'gstreamer-audio-1.0' found
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "042e9fa72c4c10fd0d4aea3363db6915f15ad95afc19b6c64e6ff806c682c85e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "042e9fa72c4c10fd0d4aea3363db6915f15ad95afc19b6c64e6ff806c682c85e", kill_on_drop: false }`
[INFO] [stdout] 042e9fa72c4c10fd0d4aea3363db6915f15ad95afc19b6c64e6ff806c682c85e