[INFO] fetching crate objc2-carbon 0.3.1...
[INFO] testing objc2-carbon-0.3.1 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate objc2-carbon 0.3.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate objc2-carbon 0.3.1
[INFO] finished tweaking crates.io crate objc2-carbon 0.3.1
[INFO] tweaked toml for crates.io crate objc2-carbon 0.3.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate objc2-carbon 0.3.1 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate objc2-carbon 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76c183fa89207c9092f7455c326d8d3a249b77db0601140779d67492dd998ebc
[INFO] running `Command { std: "docker" "start" "-a" "76c183fa89207c9092f7455c326d8d3a249b77db0601140779d67492dd998ebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76c183fa89207c9092f7455c326d8d3a249b77db0601140779d67492dd998ebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76c183fa89207c9092f7455c326d8d3a249b77db0601140779d67492dd998ebc", kill_on_drop: false }`
[INFO] [stdout] 76c183fa89207c9092f7455c326d8d3a249b77db0601140779d67492dd998ebc
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] c557ec87fcafe66b70563d4d73d4395e1c03daf085ad4e140d90f203f83ef47f
[INFO] running `Command { std: "docker" "start" "-a" "c557ec87fcafe66b70563d4d73d4395e1c03daf085ad4e140d90f203f83ef47f", kill_on_drop: false }`
[INFO] [stderr]    Compiling objc2-carbon v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0455]: link kind `framework` is only supported on Apple targets
[INFO] [stdout]   --> src/generated/mod.rs:21:32
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[link(name = "Carbon", kind = "framework")]
[INFO] [stdout]    |                                ^^^^^^^^^^^
[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-carbon` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c557ec87fcafe66b70563d4d73d4395e1c03daf085ad4e140d90f203f83ef47f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c557ec87fcafe66b70563d4d73d4395e1c03daf085ad4e140d90f203f83ef47f", kill_on_drop: false }`
[INFO] [stdout] c557ec87fcafe66b70563d4d73d4395e1c03daf085ad4e140d90f203f83ef47f