[INFO] crate metl 0.0.0 is already in cache
[INFO] extracting crate metl 0.0.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/metl/0.0.0
[INFO] extracting crate metl 0.0.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/metl/0.0.0
[INFO] validating manifest of metl-0.0.0 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 metl-0.0.0 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 metl-0.0.0
[INFO] removed path dependency metal-sys from metl-0.0.0
[INFO] finished frobbing metl-0.0.0
[INFO] frobbed toml for metl-0.0.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/metl/0.0.0/Cargo.toml
[INFO] started frobbing metl-0.0.0
[INFO] removed path dependency metal-sys from metl-0.0.0
[INFO] finished frobbing metl-0.0.0
[INFO] frobbed toml for metl-0.0.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/metl/0.0.0/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing metl-0.0.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/metl/0.0.0:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] cc14e6d2b84dceccd6ecaf2bc5941d5cf6179dde99c0f8caece5226e99c7c7bd
[INFO] running `"docker" "start" "-a" "cc14e6d2b84dceccd6ecaf2bc5941d5cf6179dde99c0f8caece5226e99c7c7bd"`
[INFO] [stderr]    Compiling core-foundation-sys v0.2.3
[INFO] [stderr]    Compiling core-foundation-sys v0.6.2
[INFO] [stderr]    Compiling metal-sys v0.0.0
[INFO] [stderr]    Compiling objc v0.1.8
[INFO] [stderr] error[E0463]: can't find crate for `block`
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/metal-sys-0.0.0/src/lib.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | extern crate block;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `metal-sys`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0591]: can't transmute zero-sized type
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/objc-0.1.8/src/message.rs:52:18
[INFO] [stderr]    |
[INFO] [stderr] 52 |         unsafe { mem::transmute(runtime::objc_msgSend) }
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: source type: for<'r> unsafe extern "C" fn(*mut runtime::Object, runtime::Sel, std::ffi::VaListImpl<'r>, ...) -> *mut runtime::Object {runtime::objc_msgSend}
[INFO] [stderr]    = note: target type: for<'r> unsafe extern "C" fn(*mut runtime::Object, runtime::Sel, std::ffi::VaListImpl<'r>, ...) -> R
[INFO] [stderr]    = help: cast with `as` to a pointer instead
[INFO] [stderr] 
[INFO] [stderr] error[E0591]: can't transmute zero-sized type
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/objc-0.1.8/src/message.rs:54:18
[INFO] [stderr]    |
[INFO] [stderr] 54 |         unsafe { mem::transmute(runtime::objc_msgSend_stret) }
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: source type: for<'r> unsafe extern "C" fn(*mut runtime::Object, runtime::Sel, std::ffi::VaListImpl<'r>, ...) {runtime::objc_msgSend_stret}
[INFO] [stderr]    = note: target type: for<'r> unsafe extern "C" fn(*mut runtime::Object, runtime::Sel, std::ffi::VaListImpl<'r>, ...) -> R
[INFO] [stderr]    = help: cast with `as` to a pointer instead
[INFO] [stderr] 
[INFO] [stderr] error[E0591]: can't transmute zero-sized type
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/objc-0.1.8/src/message.rs:61:18
[INFO] [stderr]    |
[INFO] [stderr] 61 |         unsafe { mem::transmute(runtime::objc_msgSendSuper) }
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: source type: for<'r> unsafe extern "C" fn(*const runtime::Super, runtime::Sel, std::ffi::VaListImpl<'r>, ...) -> *mut runtime::Object {runtime::objc_msgSendSuper}
[INFO] [stderr]    = note: target type: for<'r> unsafe extern "C" fn(*const runtime::Super, runtime::Sel, std::ffi::VaListImpl<'r>, ...) -> R
[INFO] [stderr]    = help: cast with `as` to a pointer instead
[INFO] [stderr] 
[INFO] [stderr] error[E0591]: can't transmute zero-sized type
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/objc-0.1.8/src/message.rs:63:18
[INFO] [stderr]    |
[INFO] [stderr] 63 |         unsafe { mem::transmute(runtime::objc_msgSendSuper_stret) }
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: source type: for<'r> unsafe extern "C" fn(*const runtime::Super, runtime::Sel, std::ffi::VaListImpl<'r>, ...) {runtime::objc_msgSendSuper_stret}
[INFO] [stderr]    = note: target type: for<'r> unsafe extern "C" fn(*const runtime::Super, runtime::Sel, std::ffi::VaListImpl<'r>, ...) -> R
[INFO] [stderr]    = help: cast with `as` to a pointer instead
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0591`.
[INFO] [stderr] error: Could not compile `objc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "cc14e6d2b84dceccd6ecaf2bc5941d5cf6179dde99c0f8caece5226e99c7c7bd"`
[INFO] running `"docker" "rm" "-f" "cc14e6d2b84dceccd6ecaf2bc5941d5cf6179dde99c0f8caece5226e99c7c7bd"`
[INFO] [stdout] cc14e6d2b84dceccd6ecaf2bc5941d5cf6179dde99c0f8caece5226e99c7c7bd