[INFO] fetching crate linear_assignment 0.0.1...
[INFO] checking linear_assignment-0.0.1 against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] extracting crate linear_assignment 0.0.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate linear_assignment 0.0.1 on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate linear_assignment 0.0.1
[INFO] finished tweaking crates.io crate linear_assignment 0.0.1
[INFO] tweaked toml for crates.io crate linear_assignment 0.0.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+b61e69433951e31f7bd746e22f516a48ad41623b" "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] dca373b4c4812e3c1634b4c0c42f1e0554c03cab9bc730e7672963db49706c8a
[INFO] running `"docker" "start" "-a" "dca373b4c4812e3c1634b4c0c42f1e0554c03cab9bc730e7672963db49706c8a"`
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]     Checking quickcheck v0.9.0
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking linear_assignment v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]     Checking nalgebra v0.2.23
[INFO] [stderr] error[E0432]: unresolved import `rand::Rand`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/dmat.rs:9:18
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rand::{self, Rand};
[INFO] [stderr]   |                  ^^^^ no `Rand` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::Rand`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/dvec.rs:9:18
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rand::{self, Rand};
[INFO] [stderr]   |                  ^^^^ no `Rand` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::Rand`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/vec.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rand::{Rand, Rng};
[INFO] [stderr]    |            ^^^^ no `Rand` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::Rand`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/pnt.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rand::{Rand, Rng};
[INFO] [stderr]    |            ^^^^ no `Rand` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::Rand`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/quat.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rand::{Rand, Rng};
[INFO] [stderr]   |            ^^^^ no `Rand` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::Rand`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/mat.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rand::{Rand, Rng};
[INFO] [stderr]   |            ^^^^ no `Rand` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::Rand`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/rot.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rand::{Rand, Rng};
[INFO] [stderr]   |            ^^^^ no `Rand` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::Rand`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/iso.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rand::{Rand, Rng};
[INFO] [stderr]   |            ^^^^ no `Rand` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::Rand`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.2.23/src/structs/spec/vec0.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rand::{Rand, Rng};
[INFO] [stderr]   |            ^^^^ no `Rand` in the root
[INFO] [stderr] 
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr] error: aborting due to 9 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `nalgebra`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "dca373b4c4812e3c1634b4c0c42f1e0554c03cab9bc730e7672963db49706c8a"`
[INFO] running `"docker" "rm" "-f" "dca373b4c4812e3c1634b4c0c42f1e0554c03cab9bc730e7672963db49706c8a"`
[INFO] [stdout] dca373b4c4812e3c1634b4c0c42f1e0554c03cab9bc730e7672963db49706c8a