[INFO] fetching crate metal-sys 0.0.0...
[INFO] extracting crate metal-sys 0.0.0 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/metal-sys/0.0.0
[INFO] extracting crate metal-sys 0.0.0 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/metal-sys/0.0.0
[INFO] validating manifest of metal-sys-0.0.0 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of metal-sys-0.0.0 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing metal-sys-0.0.0
[INFO] finished frobbing metal-sys-0.0.0
[INFO] frobbed toml for metal-sys-0.0.0 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/metal-sys/0.0.0/Cargo.toml
[INFO] started frobbing metal-sys-0.0.0
[INFO] finished frobbing metal-sys-0.0.0
[INFO] frobbed toml for metal-sys-0.0.0 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/metal-sys/0.0.0/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking metal-sys-0.0.0 against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-1/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/metal-sys/0.0.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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=forbid" "-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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2d0006725152b280f5b86bbfd0164a842ba17d5fed676c7c69d077ec7df0f0fe
[INFO] running `"docker" "start" "-a" "2d0006725152b280f5b86bbfd0164a842ba17d5fed676c7c69d077ec7df0f0fe"`
[INFO] [stderr]     Checking metal-sys v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/protocols/mtl_resource.rs:143:1
[INFO] [stderr]     |
[INFO] [stderr] 143 | / /// Optional arguments used to create and influence behavior of buffer and
[INFO] [stderr] 144 | | /// texture objects.
[INFO] [stderr]     | |____________________^
[INFO] [stderr] 145 | / bitflags! {
[INFO] [stderr] 146 | |     pub flags MTLResourceOptions: usize {
[INFO] [stderr] 147 | |         /// The default CPU cache mode for the resource. Guarantees that read and
[INFO] [stderr] 148 | |         /// write operations are executed in the expected order.
[INFO] [stderr] ...   |
[INFO] [stderr] 183 | |     }
[INFO] [stderr] 184 | | }
[INFO] [stderr]     | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/protocols/mtl_resource.rs:143:1
[INFO] [stderr]     |
[INFO] [stderr] 143 | / /// Optional arguments used to create and influence behavior of buffer and
[INFO] [stderr] 144 | | /// texture objects.
[INFO] [stderr]     | |____________________^
[INFO] [stderr] 145 | / bitflags! {
[INFO] [stderr] 146 | |     pub flags MTLResourceOptions: usize {
[INFO] [stderr] 147 | |         /// The default CPU cache mode for the resource. Guarantees that read and
[INFO] [stderr] 148 | |         /// write operations are executed in the expected order.
[INFO] [stderr] ...   |
[INFO] [stderr] 183 | |     }
[INFO] [stderr] 184 | | }
[INFO] [stderr]     | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `block`
[INFO] [stderr]  --> 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[E0463]: can't find crate for `block`
[INFO] [stderr]  --> src/lib.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | extern crate block;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `metal-sys`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2d0006725152b280f5b86bbfd0164a842ba17d5fed676c7c69d077ec7df0f0fe"`
[INFO] running `"docker" "rm" "-f" "2d0006725152b280f5b86bbfd0164a842ba17d5fed676c7c69d077ec7df0f0fe"`
[INFO] [stdout] 2d0006725152b280f5b86bbfd0164a842ba17d5fed676c7c69d077ec7df0f0fe