[INFO] updating cached repository phaazon/kit-test
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/phaazon/kit-test
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/phaazon/kit-test" "work/ex/beta-1.38-1/sources/1.37.0/gh/phaazon/kit-test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/phaazon/kit-test'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/phaazon/kit-test" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phaazon/kit-test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phaazon/kit-test'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] aa97b51651479658ee06c92a3bbafd613e0a961c
[INFO] sha for GitHub repo phaazon/kit-test: aa97b51651479658ee06c92a3bbafd613e0a961c
[INFO] validating manifest of phaazon/kit-test 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 phaazon/kit-test 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 phaazon/kit-test
[INFO] finished frobbing phaazon/kit-test
[INFO] frobbed toml for phaazon/kit-test written to work/ex/beta-1.38-1/sources/1.37.0/gh/phaazon/kit-test/Cargo.toml
[INFO] started frobbing phaazon/kit-test
[INFO] finished frobbing phaazon/kit-test
[INFO] frobbed toml for phaazon/kit-test written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phaazon/kit-test/Cargo.toml
[INFO] crate phaazon/kit-test 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing phaazon/kit-test 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-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/phaazon/kit-test:/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] 359b2507f27e77151277a8cf99bd531f076b1b705627b2d3cfff08de7a3dae01
[INFO] running `"docker" "start" "-a" "359b2507f27e77151277a8cf99bd531f076b1b705627b2d3cfff08de7a3dae01"`
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling slab v0.1.3
[INFO] [stderr]    Compiling bytes v0.3.0
[INFO] [stderr]    Compiling nom v1.2.4
[INFO] [stderr]    Compiling luminance-windowing v0.1.1
[INFO] [stderr]    Compiling any-cache v0.2.3
[INFO] [stderr]    Compiling serde v1.0.52
[INFO] [stderr]    Compiling spectra v0.12.0
[INFO] [stderr]    Compiling cmake v0.1.31
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling ogg-sys v0.0.9
[INFO] [stderr]    Compiling vorbis-sys v0.0.8
[INFO] [stderr]    Compiling vorbisfile-sys v0.0.8
[INFO] [stderr]    Compiling vorbis-encoder v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling filetime v0.1.15
[INFO] [stderr]    Compiling inotify v0.3.0
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling glfw-sys v3.2.2
[INFO] [stderr]    Compiling semver v0.2.3
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling syn v0.13.7
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]    Compiling num-bigint v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.35
[INFO] [stderr]    Compiling chrono v0.4.2
[INFO] [stderr]    Compiling cgmath v0.15.0
[INFO] [stderr]    Compiling parking_lot v0.4.8
[INFO] [stderr]    Compiling miow v0.1.5
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling glsl v0.7.2
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling gl v0.10.0
[INFO] [stderr]    Compiling mio v0.5.1
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling notify v4.0.3
[INFO] [stderr]    Compiling vorbis v0.1.0
[INFO] [stderr]    Compiling image v0.17.0
[INFO] [stderr]    Compiling glfw v0.20.0
[INFO] [stderr]    Compiling serde_json v1.0.17
[INFO] [stderr]    Compiling warmy v0.7.2
[INFO] [stderr]    Compiling luminance-glfw v0.4.3
[INFO] [stderr]    Compiling luminance v0.25.7
[INFO] [stderr]    Compiling rental-impl v0.5.0
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/luminance-0.25.7/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(const_fn)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `luminance`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "359b2507f27e77151277a8cf99bd531f076b1b705627b2d3cfff08de7a3dae01"`
[INFO] running `"docker" "rm" "-f" "359b2507f27e77151277a8cf99bd531f076b1b705627b2d3cfff08de7a3dae01"`
[INFO] [stdout] 359b2507f27e77151277a8cf99bd531f076b1b705627b2d3cfff08de7a3dae01