[INFO] updating cached repository https://github.com/aneeshdurg/visual-malloc
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 89ed5e1cd1e9c87fab0ac77f4d0a3a5af24f3d28
[INFO] testing aneeshdurg/visual-malloc against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Faneeshdurg%2Fvisual-malloc" "work/builds/worker-9/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aneeshdurg/visual-malloc on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/aneeshdurg/visual-malloc
[INFO] finished tweaking git repo https://github.com/aneeshdurg/visual-malloc
[INFO] tweaked toml for git repo https://github.com/aneeshdurg/visual-malloc written to work/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/aneeshdurg/visual-malloc already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 33c447af907a8477709101df8876b94c7c7ab7a410afa181024e92585d11744c
[INFO] running `"docker" "start" "-a" "33c447af907a8477709101df8876b94c7c7ab7a410afa181024e92585d11744c"`
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling nix v0.12.0
[INFO] [stderr]    Compiling khronos_api v3.0.0
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling libm v0.1.2
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.3
[INFO] [stderr]    Compiling claxon v0.3.2
[INFO] [stderr]    Compiling base-x v0.2.4
[INFO] [stderr]    Compiling discard v1.0.4
[INFO] [stderr]    Compiling immi v1.0.4
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling inflate v0.4.4
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling xmlparser v0.1.2
[INFO] [stderr]    Compiling smallvec v0.6.8
[INFO] [stderr]    Compiling stdweb v0.4.13
[INFO] [stderr]    Compiling approx v0.3.1
[INFO] [stderr]    Compiling ordered-float v1.0.1
[INFO] [stderr]    Compiling line_drawing v0.7.0
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling slice-deque v0.1.16
[INFO] [stderr]    Compiling dirs v1.0.4
[INFO] [stderr]    Compiling ogg v0.7.0
[INFO] [stderr]    Compiling wayland-scanner v0.21.11
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling euclid v0.18.2
[INFO] [stderr]    Compiling sid v0.5.2
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling svgparser v0.6.4
[INFO] [stderr]    Compiling png v0.12.0
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling cgmath v0.14.1
[INFO] [stderr]    Compiling lewton v0.9.3
[INFO] [stderr]    Compiling dlib v0.4.1
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]    Compiling minimp3 v0.3.2
[INFO] [stderr]    Compiling alga v0.8.1
[INFO] [stderr]    Compiling wayland-sys v0.21.11
[INFO] [stderr]    Compiling cpal v0.8.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling lyon_geom v0.11.1
[INFO] [stderr]    Compiling rusttype v0.7.5
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling gl v0.10.0
[INFO] [stderr]    Compiling andrew v0.1.6
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling glutin v0.19.0
[INFO] [stderr]    Compiling lyon_path v0.11.0
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling wayland-client v0.21.11
[INFO] [stderr]    Compiling wayland-protocols v0.21.11
[INFO] [stderr]    Compiling nalgebra v0.17.0
[INFO] [stderr]    Compiling wayland-commons v0.21.11
[INFO] [stderr]    Compiling lyon_svg v0.11.0
[INFO] [stderr]    Compiling lyon_tessellation v0.11.0
[INFO] [stderr]    Compiling lyon_algorithms v0.11.2
[INFO] [stderr] error: Could not compile `syn`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.15.26/src/lib.rs --color never --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=e268cb9ecf90a971 -C extra-filename=-e268cb9ecf90a971 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-8f43a668926682bf.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-c8dddbff5d36941d.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-db534cf3c78b3692.rmeta --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/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.17.0/src/base/cg.rs:297:44
[INFO] [stderr]     |
[INFO] [stderr] 297 |                 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" "33c447af907a8477709101df8876b94c7c7ab7a410afa181024e92585d11744c"`
[INFO] running `"docker" "rm" "-f" "33c447af907a8477709101df8876b94c7c7ab7a410afa181024e92585d11744c"`
[INFO] [stdout] 33c447af907a8477709101df8876b94c7c7ab7a410afa181024e92585d11744c