[INFO] updating cached repository mrobakowski/rust-metaballs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mrobakowski/rust-metaballs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mrobakowski/rust-metaballs" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/mrobakowski/rust-metaballs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/mrobakowski/rust-metaballs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mrobakowski/rust-metaballs" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/mrobakowski/rust-metaballs"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/mrobakowski/rust-metaballs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8a4fb6c36f2f58591c90c5b4e152156bbea55bde
[INFO] sha for GitHub repo mrobakowski/rust-metaballs: 8a4fb6c36f2f58591c90c5b4e152156bbea55bde
[INFO] validating manifest of mrobakowski/rust-metaballs on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mrobakowski/rust-metaballs on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mrobakowski/rust-metaballs
[INFO] finished frobbing mrobakowski/rust-metaballs
[INFO] frobbed toml for mrobakowski/rust-metaballs written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/mrobakowski/rust-metaballs/Cargo.toml
[INFO] started frobbing mrobakowski/rust-metaballs
[INFO] finished frobbing mrobakowski/rust-metaballs
[INFO] frobbed toml for mrobakowski/rust-metaballs written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/mrobakowski/rust-metaballs/Cargo.toml
[INFO] crate mrobakowski/rust-metaballs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking mrobakowski/rust-metaballs against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-7/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/mrobakowski/rust-metaballs:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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=forbid" "-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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1e850324fdc58a934d4681263b6f1449cca47ae26fc13122c21166f56f38fcc1
[INFO] running `"docker" "start" "-a" "1e850324fdc58a934d4681263b6f1449cca47ae26fc13122c21166f56f38fcc1"`
[INFO] [stderr]    Compiling num-complex v0.2.0
[INFO] [stderr]    Compiling wayland-scanner v0.20.10
[INFO] [stderr]     Checking rand v0.5.4
[INFO] [stderr]     Checking x11-dl v2.18.0
[INFO] [stderr]     Checking parking_lot v0.6.2
[INFO] [stderr]    Compiling glium v0.22.0
[INFO] [stderr]     Checking approx v0.2.1
[INFO] [stderr]     Checking quaternion v0.3.0
[INFO] [stderr]     Checking wayland-sys v0.20.10
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking wayland-commons v0.20.10
[INFO] [stderr]     Checking piston3d-cam v0.3.0
[INFO] [stderr]    Compiling wayland-client v0.20.10
[INFO] [stderr]    Compiling wayland-protocols v0.20.10
[INFO] [stderr]     Checking alga v0.6.0
[INFO] [stderr]     Checking nalgebra v0.15.3
[INFO] [stderr]     Checking smithay-client-toolkit v0.2.6
[INFO] [stderr]     Checking winit v0.16.2
[INFO] [stderr]     Checking glutin v0.17.0
[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] 
[INFO] [stderr]     Checking rust-metaballs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.72s
[INFO] running `"docker" "inspect" "1e850324fdc58a934d4681263b6f1449cca47ae26fc13122c21166f56f38fcc1"`
[INFO] running `"docker" "rm" "-f" "1e850324fdc58a934d4681263b6f1449cca47ae26fc13122c21166f56f38fcc1"`
[INFO] [stdout] 1e850324fdc58a934d4681263b6f1449cca47ae26fc13122c21166f56f38fcc1