[INFO] crate vkn-raw 0.0.1 is already in cache
[INFO] extracting crate vkn-raw 0.0.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/vkn-raw/0.0.1
[INFO] extracting crate vkn-raw 0.0.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/vkn-raw/0.0.1
[INFO] validating manifest of vkn-raw-0.0.1 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 vkn-raw-0.0.1 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 vkn-raw-0.0.1
[INFO] finished frobbing vkn-raw-0.0.1
[INFO] frobbed toml for vkn-raw-0.0.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/vkn-raw/0.0.1/Cargo.toml
[INFO] started frobbing vkn-raw-0.0.1
[INFO] finished frobbing vkn-raw-0.0.1
[INFO] frobbed toml for vkn-raw-0.0.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/vkn-raw/0.0.1/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] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing vkn-raw-0.0.1 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/vkn-raw/0.0.1:/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] ab9b0b635dd852f08d7726c5bc046f690ffb087ec546e9fe173e2a11714fbc63
[INFO] running `"docker" "start" "-a" "ab9b0b635dd852f08d7726c5bc046f690ffb087ec546e9fe173e2a11714fbc63"`
[INFO] [stderr]    Compiling vkn-raw v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] error: environment variable `VULKAN_PATH` not defined
[INFO] [stderr]   --> build.rs:11:25
[INFO] [stderr]    |
[INFO] [stderr] 11 |         .header(concat!(env!("VULKAN_PATH"), "/include/vulkan/vulkan.h"))
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `vkn-raw`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ab9b0b635dd852f08d7726c5bc046f690ffb087ec546e9fe173e2a11714fbc63"`
[INFO] running `"docker" "rm" "-f" "ab9b0b635dd852f08d7726c5bc046f690ffb087ec546e9fe173e2a11714fbc63"`
[INFO] [stdout] ab9b0b635dd852f08d7726c5bc046f690ffb087ec546e9fe173e2a11714fbc63