[INFO] crate readkey 0.2.1 is already in cache
[INFO] testing readkey-0.2.1 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate readkey 0.2.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate readkey 0.2.1 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate readkey 0.2.1
[INFO] finished tweaking crates.io crate readkey 0.2.1
[INFO] tweaked toml for crates.io crate readkey 0.2.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate readkey 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] b9b0742d53504251c708f34b5ba9a66f402f45abf28f7328f0cb0ddeda0c9343
[INFO] running `Command { std: "docker" "start" "-a" "b9b0742d53504251c708f34b5ba9a66f402f45abf28f7328f0cb0ddeda0c9343", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9b0742d53504251c708f34b5ba9a66f402f45abf28f7328f0cb0ddeda0c9343", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9b0742d53504251c708f34b5ba9a66f402f45abf28f7328f0cb0ddeda0c9343", kill_on_drop: false }`
[INFO] [stdout] b9b0742d53504251c708f34b5ba9a66f402f45abf28f7328f0cb0ddeda0c9343
[INFO] running `Command { std: "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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--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] 59d2d09c2a5169677f16f05cc7c14a11e62fded493f13ada1f39b303a29045f5
[INFO] running `Command { std: "docker" "start" "-a" "59d2d09c2a5169677f16f05cc7c14a11e62fded493f13ada1f39b303a29045f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling readkey v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0455]: native frameworks are only available on macOS targets
[INFO] [stdout]    --> src/lib.rs:138:1
[INFO] [stdout]     |
[INFO] [stdout] 138 | #[link(name = "AppKit", kind = "framework")]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0455`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `readkey`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "59d2d09c2a5169677f16f05cc7c14a11e62fded493f13ada1f39b303a29045f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59d2d09c2a5169677f16f05cc7c14a11e62fded493f13ada1f39b303a29045f5", kill_on_drop: false }`
[INFO] [stdout] 59d2d09c2a5169677f16f05cc7c14a11e62fded493f13ada1f39b303a29045f5