[INFO] crate ipp-sys 0.4.3 is already in cache
[INFO] extracting crate ipp-sys 0.4.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/ipp-sys/0.4.3
[INFO] extracting crate ipp-sys 0.4.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ipp-sys/0.4.3
[INFO] validating manifest of ipp-sys-0.4.3 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 ipp-sys-0.4.3 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 ipp-sys-0.4.3
[INFO] finished frobbing ipp-sys-0.4.3
[INFO] frobbed toml for ipp-sys-0.4.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/ipp-sys/0.4.3/Cargo.toml
[INFO] started frobbing ipp-sys-0.4.3
[INFO] finished frobbing ipp-sys-0.4.3
[INFO] frobbed toml for ipp-sys-0.4.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ipp-sys/0.4.3/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ipp-sys-0.4.3 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-2/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/ipp-sys/0.4.3:/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] d77c978257c24b342c004afe683d63d2d09130c50fce26a61ffe2ddb399f9ddb
[INFO] running `"docker" "start" "-a" "d77c978257c24b342c004afe683d63d2d09130c50fce26a61ffe2ddb399f9ddb"`
[INFO] [stderr]    Compiling ipp-sys-build-help v0.1.2
[INFO] [stderr]    Compiling ipp-headers-sys v0.4.3
[INFO] [stderr] error: You are attempting to compile without a required feature flag being used. You must use one of either `2017`, `2018`, `2019`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/ipp-headers-sys-0.4.3/src/lib.rs:37:1
[INFO] [stderr]    |
[INFO] [stderr] 37 | / compile_error!("You are attempting to compile without a required feature flag \
[INFO] [stderr] 38 | |     being used. You must use one of either `2017`, `2018`, `2019`");
[INFO] [stderr]    | |____________________________________________________________________^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `ipp-headers-sys`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d77c978257c24b342c004afe683d63d2d09130c50fce26a61ffe2ddb399f9ddb"`
[INFO] running `"docker" "rm" "-f" "d77c978257c24b342c004afe683d63d2d09130c50fce26a61ffe2ddb399f9ddb"`
[INFO] [stdout] d77c978257c24b342c004afe683d63d2d09130c50fce26a61ffe2ddb399f9ddb