[INFO] updating cached repository https://github.com/mvlabat/rust_mnist_gradient_descent
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] b26648827dd1873edf9ec7002b4ad8773e5db0be
[INFO] checking mvlabat/rust_mnist_gradient_descent against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmvlabat%2Frust_mnist_gradient_descent" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mvlabat/rust_mnist_gradient_descent on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mvlabat/rust_mnist_gradient_descent
[INFO] finished tweaking git repo https://github.com/mvlabat/rust_mnist_gradient_descent
[INFO] tweaked toml for git repo https://github.com/mvlabat/rust_mnist_gradient_descent written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/mvlabat/rust_mnist_gradient_descent already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e041183bf85644dfa847c94ac5ed75f81051c64a04f4213221af36ab1243dca3
[INFO] running `"docker" "start" "-a" "e041183bf85644dfa847c94ac5ed75f81051c64a04f4213221af36ab1243dca3"`
[INFO] [stderr]     Checking libc v0.2.36
[INFO] [stderr]     Checking futures v0.1.18
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking num-complex v0.1.41
[INFO] [stderr]     Checking generic-array v0.8.3
[INFO] [stderr]     Checking mnist v0.4.0
[INFO] [stderr]     Checking alga v0.5.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking rand v0.3.20
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking nalgebra v0.13.1
[INFO] [stderr] error[E0119]: conflicting implementations of trait `std::ops::Mul<&_>` for type `geometry::translation::Translation<_, _>`:
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.13.1/src/geometry/isometry_ops.rs:67:9
[INFO] [stderr]     |
[INFO] [stderr] 67  | /         impl<$($lives ,)* N: Real, D: DimName, R> $Op<$Rhs> for $Lhs
[INFO] [stderr] 68  | |             where R: AlgaRotation<Point<N, D>>,
[INFO] [stderr] 69  | |                   DefaultAllocator: Allocator<N, D> {
[INFO] [stderr] 70  | |             type Output = $Output;
[INFO] [stderr] ...   |
[INFO] [stderr] 75  | |             }
[INFO] [stderr] 76  | |         }
[INFO] [stderr]     | |         ^
[INFO] [stderr]     | |         |
[INFO] [stderr]     | |_________first implementation here
[INFO] [stderr]     |           conflicting implementation for `geometry::translation::Translation<_, _>`
[INFO] [stderr] ...
[INFO] [stderr] 281 | / isometry_binop_impl_all!(
[INFO] [stderr] 282 | |     Mul, mul;
[INFO] [stderr] 283 | |     self: Translation<N, D>, right: R, Output = Isometry<N, D, R>;
[INFO] [stderr] 284 | |     [val val] => Isometry::from_parts(self, right);
[INFO] [stderr] ...   |
[INFO] [stderr] 287 | |     [ref ref] => Isometry::from_parts(self.clone(), right.clone());
[INFO] [stderr] 288 | | );
[INFO] [stderr]     | |__- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: downstream crates may implement trait `alga::linear::Rotation<geometry::point::Point<_, _>>` for type `&_`
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0119]: conflicting implementations of trait `std::ops::Mul<&_>` for type `&geometry::translation::Translation<_, _>`:
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.13.1/src/geometry/isometry_ops.rs:67:9
[INFO] [stderr]     |
[INFO] [stderr] 67  | /         impl<$($lives ,)* N: Real, D: DimName, R> $Op<$Rhs> for $Lhs
[INFO] [stderr] 68  | |             where R: AlgaRotation<Point<N, D>>,
[INFO] [stderr] 69  | |                   DefaultAllocator: Allocator<N, D> {
[INFO] [stderr] 70  | |             type Output = $Output;
[INFO] [stderr] ...   |
[INFO] [stderr] 75  | |             }
[INFO] [stderr] 76  | |         }
[INFO] [stderr]     | |         ^
[INFO] [stderr]     | |         |
[INFO] [stderr]     | |_________first implementation here
[INFO] [stderr]     |           conflicting implementation for `&geometry::translation::Translation<_, _>`
[INFO] [stderr] ...
[INFO] [stderr] 281 | / isometry_binop_impl_all!(
[INFO] [stderr] 282 | |     Mul, mul;
[INFO] [stderr] 283 | |     self: Translation<N, D>, right: R, Output = Isometry<N, D, R>;
[INFO] [stderr] 284 | |     [val val] => Isometry::from_parts(self, right);
[INFO] [stderr] ...   |
[INFO] [stderr] 287 | |     [ref ref] => Isometry::from_parts(self.clone(), right.clone());
[INFO] [stderr] 288 | | );
[INFO] [stderr]     | |__- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: downstream crates may implement trait `alga::linear::Rotation<geometry::point::Point<_, _>>` for type `&_`
[INFO] [stderr]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0119`.
[INFO] [stderr] error: could not compile `nalgebra`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e041183bf85644dfa847c94ac5ed75f81051c64a04f4213221af36ab1243dca3"`
[INFO] running `"docker" "rm" "-f" "e041183bf85644dfa847c94ac5ed75f81051c64a04f4213221af36ab1243dca3"`
[INFO] [stdout] e041183bf85644dfa847c94ac5ed75f81051c64a04f4213221af36ab1243dca3