[INFO] crate cargo-instruments 0.2.1 is already in cache
[INFO] extracting crate cargo-instruments 0.2.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/cargo-instruments/0.2.1
[INFO] extracting crate cargo-instruments 0.2.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/cargo-instruments/0.2.1
[INFO] validating manifest of cargo-instruments-0.2.1 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cargo-instruments-0.2.1 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cargo-instruments-0.2.1
[INFO] finished frobbing cargo-instruments-0.2.1
[INFO] frobbed toml for cargo-instruments-0.2.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/cargo-instruments/0.2.1/Cargo.toml
[INFO] started frobbing cargo-instruments-0.2.1
[INFO] finished frobbing cargo-instruments-0.2.1
[INFO] frobbed toml for cargo-instruments-0.2.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/cargo-instruments/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing cargo-instruments-0.2.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/cargo-instruments/0.2.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 32c478b75fde474934dffa4f71ce5c8764b8b853c939f2148984f5717155609d
[INFO] running `"docker" "start" "-a" "32c478b75fde474934dffa4f71ce5c8764b8b853c939f2148984f5717155609d"`
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling opener v0.3.2
[INFO] [stderr]    Compiling crates-io v0.22.0
[INFO] [stderr]    Compiling cargo v0.34.0
[INFO] [stderr]    Compiling cargo-instruments v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] error: cargo-instruments requires macOS.
[INFO] [stderr]  --> src/main.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | compile_error!("cargo-instruments requires macOS.");
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `cargo-instruments`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "32c478b75fde474934dffa4f71ce5c8764b8b853c939f2148984f5717155609d"`
[INFO] running `"docker" "rm" "-f" "32c478b75fde474934dffa4f71ce5c8764b8b853c939f2148984f5717155609d"`
[INFO] [stdout] 32c478b75fde474934dffa4f71ce5c8764b8b853c939f2148984f5717155609d