[INFO] crate ipp-headers-sys 0.4.3 is already in cache
[INFO] testing ipp-headers-sys-0.4.3 against 1.38.0 for beta-1.39-1
[INFO] extracting crate ipp-headers-sys 0.4.3 into work/builds/worker-6/source
[INFO] validating manifest of crates.io crate ipp-headers-sys 0.4.3 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ipp-headers-sys 0.4.3
[INFO] finished tweaking crates.io crate ipp-headers-sys 0.4.3
[INFO] tweaked toml for crates.io crate ipp-headers-sys 0.4.3 written to work/builds/worker-6/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] ca7f7df32328f95a834df0ef371c7921d90a889720bffa453d7383c68703cd1c
[INFO] running `"docker" "start" "-a" "ca7f7df32328f95a834df0ef371c7921d90a889720bffa453d7383c68703cd1c"`
[INFO] [stderr]    Compiling ipp-headers-sys v0.4.3 (/opt/rustwide/workdir)
[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]   --> 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] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ca7f7df32328f95a834df0ef371c7921d90a889720bffa453d7383c68703cd1c"`
[INFO] running `"docker" "rm" "-f" "ca7f7df32328f95a834df0ef371c7921d90a889720bffa453d7383c68703cd1c"`
[INFO] [stdout] ca7f7df32328f95a834df0ef371c7921d90a889720bffa453d7383c68703cd1c