[INFO] updating cached repository segfault88/rscraft
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/segfault88/rscraft
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/segfault88/rscraft" "work/ex/beta-1.38-1/sources/1.37.0/gh/segfault88/rscraft"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/segfault88/rscraft'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/segfault88/rscraft" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/segfault88/rscraft"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/segfault88/rscraft'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1cf1d3a82ae081bedc345225086d3300b8814eb5
[INFO] sha for GitHub repo segfault88/rscraft: 1cf1d3a82ae081bedc345225086d3300b8814eb5
[INFO] validating manifest of segfault88/rscraft 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 segfault88/rscraft 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 segfault88/rscraft
[INFO] finished frobbing segfault88/rscraft
[INFO] frobbed toml for segfault88/rscraft written to work/ex/beta-1.38-1/sources/1.37.0/gh/segfault88/rscraft/Cargo.toml
[INFO] started frobbing segfault88/rscraft
[INFO] finished frobbing segfault88/rscraft
[INFO] frobbed toml for segfault88/rscraft written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/segfault88/rscraft/Cargo.toml
[INFO] crate segfault88/rscraft 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]     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 segfault88/rscraft 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/segfault88/rscraft:/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] b5fda91f34d6d38a5be0fd421f67faf2aed4d09d496f364e613f0599234f021b
[INFO] running `"docker" "start" "-a" "b5fda91f34d6d38a5be0fd421f67faf2aed4d09d496f364e613f0599234f021b"`
[INFO] [stderr]    Compiling num-complex v0.2.0
[INFO] [stderr]    Compiling half v1.1.0
[INFO] [stderr]    Compiling vulkano v0.9.0
[INFO] [stderr]    Compiling rand v0.5.1
[INFO] [stderr]    Compiling generic-array v0.11.0
[INFO] [stderr]    Compiling approx v0.2.0
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]    Compiling png v0.12.0
[INFO] [stderr]    Compiling winit v0.11.3
[INFO] [stderr]    Compiling glsl-to-spirv v0.1.5
[INFO] [stderr]    Compiling alga v0.6.0
[INFO] [stderr]    Compiling image v0.19.0
[INFO] [stderr]    Compiling nalgebra v0.15.3
[INFO] [stderr] error: Could not compile `vulkano`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name vulkano /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/vulkano-0.9.0/src/lib.rs --color never --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 -C metadata=fa84fd22551773d6 -C extra-filename=-fa84fd22551773d6 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --extern crossbeam=/opt/crater/target/debug/deps/libcrossbeam-059bd6b2f9ab096d.rlib --extern fnv=/opt/crater/target/debug/deps/libfnv-0b54693efaf27e2a.rlib --extern half=/opt/crater/target/debug/deps/libhalf-f9059fbb03a9e703.rlib --extern lazy_static=/opt/crater/target/debug/deps/liblazy_static-159edd98394cf90d.rlib --extern shared_library=/opt/crater/target/debug/deps/libshared_library-a508739232e3e551.rlib --extern smallvec=/opt/crater/target/debug/deps/libsmallvec-f5279d6017ea46e8.rlib --extern vk_sys=/opt/crater/target/debug/deps/libvk_sys-a351292d09ff5bcc.rlib --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning[E0502]: cannot borrow `*self` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.15.3/src/base/cg.rs:292:44
[INFO] [stderr]     |
[INFO] [stderr] 292 |                 self[(j, i)] += shift[j] * self[(D::dim() - 1, i)];
[INFO] [stderr]     |                 ---------------------------^^^^-------------------
[INFO] [stderr]     |                 |                          |
[INFO] [stderr]     |                 |                          immutable borrow occurs here
[INFO] [stderr]     |                 mutable borrow occurs here
[INFO] [stderr]     |                 mutable borrow later used here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "b5fda91f34d6d38a5be0fd421f67faf2aed4d09d496f364e613f0599234f021b"`
[INFO] running `"docker" "rm" "-f" "b5fda91f34d6d38a5be0fd421f67faf2aed4d09d496f364e613f0599234f021b"`
[INFO] [stdout] b5fda91f34d6d38a5be0fd421f67faf2aed4d09d496f364e613f0599234f021b