[INFO] fetching crate block2 0.2.0-alpha.8...
[INFO] checking block2-0.2.0-alpha.8 against master#9610dfe5a9a731ced1ea4923ecbd0c57fe367898 for beta-170-4
[INFO] extracting crate block2 0.2.0-alpha.8 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate block2 0.2.0-alpha.8 on toolchain 9610dfe5a9a731ced1ea4923ecbd0c57fe367898
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate block2 0.2.0-alpha.8
[INFO] finished tweaking crates.io crate block2 0.2.0-alpha.8
[INFO] tweaked toml for crates.io crate block2 0.2.0-alpha.8 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded block-sys v0.2.0
[INFO] [stderr]   Downloaded objc-sys v0.3.0
[INFO] [stderr]   Downloaded objc2 v0.3.0-beta.5
[INFO] [stderr]   Downloaded objc2-encode v2.0.0-pre.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b62c7992bfb1e1ef9feb4a754455d684d03fe8df7f3ed7464a8e3fba125a50b
[INFO] running `Command { std: "docker" "start" "-a" "0b62c7992bfb1e1ef9feb4a754455d684d03fe8df7f3ed7464a8e3fba125a50b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b62c7992bfb1e1ef9feb4a754455d684d03fe8df7f3ed7464a8e3fba125a50b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b62c7992bfb1e1ef9feb4a754455d684d03fe8df7f3ed7464a8e3fba125a50b", kill_on_drop: false }`
[INFO] [stdout] 0b62c7992bfb1e1ef9feb4a754455d684d03fe8df7f3ed7464a8e3fba125a50b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 547185bfbc6c74d4c2a4036d7d9981499ac77f12e96f42cc47841bd98761c515
[INFO] running `Command { std: "docker" "start" "-a" "547185bfbc6c74d4c2a4036d7d9981499ac77f12e96f42cc47841bd98761c515", kill_on_drop: false }`
[INFO] [stderr]    Compiling objc-sys v0.3.0
[INFO] [stderr]    Compiling block-sys v0.2.0
[INFO] [stderr]     Checking objc2-encode v2.0.0-pre.4
[INFO] [stderr]     Checking objc2 v0.3.0-beta.5
[INFO] [stdout] error[E0455]: link kind `framework` is only supported on Apple targets
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/objc2-0.3.0-beta.5/src/lib.rs:230:38
[INFO] [stdout]     |
[INFO] [stdout] 230 |     link(name = "Foundation", 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 `objc2` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "547185bfbc6c74d4c2a4036d7d9981499ac77f12e96f42cc47841bd98761c515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "547185bfbc6c74d4c2a4036d7d9981499ac77f12e96f42cc47841bd98761c515", kill_on_drop: false }`
[INFO] [stdout] 547185bfbc6c74d4c2a4036d7d9981499ac77f12e96f42cc47841bd98761c515
