[INFO] updating cached repository gz/rust-raytracer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gz/rust-raytracer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gz/rust-raytracer" "work/ex/beta-1.38-1/sources/1.37.0/gh/gz/rust-raytracer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/gz/rust-raytracer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gz/rust-raytracer" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gz/rust-raytracer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gz/rust-raytracer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0d2ee0fe31e38e1f56538bec2d6e3e4ca7907ad1
[INFO] sha for GitHub repo gz/rust-raytracer: 0d2ee0fe31e38e1f56538bec2d6e3e4ca7907ad1
[INFO] validating manifest of gz/rust-raytracer 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 gz/rust-raytracer 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 gz/rust-raytracer
[INFO] finished frobbing gz/rust-raytracer
[INFO] frobbed toml for gz/rust-raytracer written to work/ex/beta-1.38-1/sources/1.37.0/gh/gz/rust-raytracer/Cargo.toml
[INFO] started frobbing gz/rust-raytracer
[INFO] finished frobbing gz/rust-raytracer
[INFO] frobbed toml for gz/rust-raytracer written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gz/rust-raytracer/Cargo.toml
[INFO] crate gz/rust-raytracer already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/gz/rust-raytracer/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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]     Updating git repository `https://github.com/luqmana/rust-opencl.git`
[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]     Updating git repository `https://github.com/luqmana/rust-opencl.git`
[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] testing gz/rust-raytracer 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/gz/rust-raytracer:/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] 882e1eec9863ead2d7f453c87f810cc8108412f0094dbd6f6e534562210de818
[INFO] running `"docker" "start" "-a" "882e1eec9863ead2d7f453c87f810cc8108412f0094dbd6f6e534562210de818"`
[INFO] [stderr]    Compiling opencl v0.3.0-dev (https://github.com/luqmana/rust-opencl.git#a104f56e)
[INFO] [stderr] error[E0412]: cannot find type `StaticMutex` in module `std::sync`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/rust-opencl-18192c142e877e60/a104f56/src/hl.rs:133:40
[INFO] [stderr]     |
[INFO] [stderr] 133 | static mut platforms_mutex: std::sync::StaticMutex = std::sync::MUTEX_INIT;
[INFO] [stderr]     |                                        ^^^^^^^^^^^ not found in `std::sync`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `MUTEX_INIT` in module `std::sync`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/rust-opencl-18192c142e877e60/a104f56/src/hl.rs:133:65
[INFO] [stderr]     |
[INFO] [stderr] 133 | static mut platforms_mutex: std::sync::StaticMutex = std::sync::MUTEX_INIT;
[INFO] [stderr]     |                                                                 ^^^^^^^^^^ not found in `std::sync`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/git/checkouts/rust-opencl-18192c142e877e60/a104f56/src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![feature(static_mutex)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0425, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: Could not compile `opencl`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "882e1eec9863ead2d7f453c87f810cc8108412f0094dbd6f6e534562210de818"`
[INFO] running `"docker" "rm" "-f" "882e1eec9863ead2d7f453c87f810cc8108412f0094dbd6f6e534562210de818"`
[INFO] [stdout] 882e1eec9863ead2d7f453c87f810cc8108412f0094dbd6f6e534562210de818