[INFO] fetching crate uikit 0.0.2...
[INFO] testing uikit-0.0.2 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate uikit 0.0.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate uikit 0.0.2 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uikit 0.0.2
[INFO] finished tweaking crates.io crate uikit 0.0.2
[INFO] tweaked toml for crates.io crate uikit 0.0.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "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-2021-01-01" "fetch" "--locked" "--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 serde v0.6.15
[INFO] [stderr]   Downloaded objc_id v0.1.1
[INFO] [stderr]   Downloaded objc-foundation v0.1.1
[INFO] [stderr]   Downloaded core-graphics v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0118c3cd8a013133483c70ff3851cfc674f863914551e21cd7cabfc6f892c7c
[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" "f0118c3cd8a013133483c70ff3851cfc674f863914551e21cd7cabfc6f892c7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0118c3cd8a013133483c70ff3851cfc674f863914551e21cd7cabfc6f892c7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0118c3cd8a013133483c70ff3851cfc674f863914551e21cd7cabfc6f892c7c", kill_on_drop: false }`
[INFO] [stdout] f0118c3cd8a013133483c70ff3851cfc674f863914551e21cd7cabfc6f892c7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c957d55e1aa707f813a08fa5524acf48f0a9106e83606b0a4ec68a0e8b365927
[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" "c957d55e1aa707f813a08fa5524acf48f0a9106e83606b0a4ec68a0e8b365927", kill_on_drop: false }`
[INFO] [stderr]    Compiling core-foundation-sys v0.2.3
[INFO] [stderr]    Compiling block v0.1.6
[INFO] [stderr]    Compiling malloc_buf v0.0.6
[INFO] [stderr]    Compiling objc v0.2.7
[INFO] [stderr]    Compiling objc_id v0.1.1
[INFO] [stdout] error: native frameworks are only available on macOS targets
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `core-foundation-sys`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c957d55e1aa707f813a08fa5524acf48f0a9106e83606b0a4ec68a0e8b365927", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c957d55e1aa707f813a08fa5524acf48f0a9106e83606b0a4ec68a0e8b365927", kill_on_drop: false }`
[INFO] [stdout] c957d55e1aa707f813a08fa5524acf48f0a9106e83606b0a4ec68a0e8b365927