[INFO] fetching crate block2 0.6.1...
[INFO] testing block2-0.6.1 against master#a1531335fe2807715fff569904d99602022643a7 for pr-145277
[INFO] extracting crate block2 0.6.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate block2 0.6.1
[INFO] finished tweaking crates.io crate block2 0.6.1
[INFO] tweaked toml for crates.io crate block2 0.6.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate block2 0.6.1 on toolchain a1531335fe2807715fff569904d99602022643a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a1531335fe2807715fff569904d99602022643a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate block2 0.6.1 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" "+a1531335fe2807715fff569904d99602022643a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded objc2-encode v4.1.0
[INFO] [stderr]   Downloaded objc2-exception-helper v0.1.1
[INFO] [stderr]   Downloaded objc2-proc-macros v0.2.0
[INFO] [stderr]   Downloaded cc v1.2.19
[INFO] [stderr]   Downloaded objc2 v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a1531335fe2807715fff569904d99602022643a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24e33aae1a3031c6f7b6a888ae7a5dd67cedee67a3250e1b17b0600e11d55fb3
[INFO] running `Command { std: "docker" "start" "-a" "24e33aae1a3031c6f7b6a888ae7a5dd67cedee67a3250e1b17b0600e11d55fb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24e33aae1a3031c6f7b6a888ae7a5dd67cedee67a3250e1b17b0600e11d55fb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e33aae1a3031c6f7b6a888ae7a5dd67cedee67a3250e1b17b0600e11d55fb3", kill_on_drop: false }`
[INFO] [stdout] 24e33aae1a3031c6f7b6a888ae7a5dd67cedee67a3250e1b17b0600e11d55fb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a1531335fe2807715fff569904d99602022643a7" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85cce8ce478f13ecb51731b82ce32812078e4f0a7beef8e723b1917132744c2d
[INFO] running `Command { std: "docker" "start" "-a" "85cce8ce478f13ecb51731b82ce32812078e4f0a7beef8e723b1917132744c2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling objc2 v0.6.1
[INFO] [stderr]    Compiling objc2-encode v4.1.0
[INFO] [stdout] error: `objc2` only works on Apple platforms. Pass `--target aarch64-apple-darwin` or similar to compile for macOS.
[INFO] [stdout]        (If you're absolutely certain that you're using GNUStep, you can specify that with the `gnustep-x-y` Cargo feature instead).
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/objc2-0.6.1/src/lib.rs:210:1
[INFO] [stdout]     |
[INFO] [stdout] 210 | compile_error!("`objc2` only works on Apple platforms. Pass `--target aarch64-apple-darwin` or similar to compile for macOS.\n(If you're absolutely certain that you're using GNUStep, you can specify that with the `gnustep-x-y` Cargo feature instead).");
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `objc2` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "85cce8ce478f13ecb51731b82ce32812078e4f0a7beef8e723b1917132744c2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85cce8ce478f13ecb51731b82ce32812078e4f0a7beef8e723b1917132744c2d", kill_on_drop: false }`
[INFO] [stdout] 85cce8ce478f13ecb51731b82ce32812078e4f0a7beef8e723b1917132744c2d