[INFO] crate ncollide_utils 0.9.1 is already in cache
[INFO] extracting crate ncollide_utils 0.9.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/ncollide_utils/0.9.1
[INFO] extracting crate ncollide_utils 0.9.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ncollide_utils/0.9.1
[INFO] validating manifest of ncollide_utils-0.9.1 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 ncollide_utils-0.9.1 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 ncollide_utils-0.9.1
[INFO] finished frobbing ncollide_utils-0.9.1
[INFO] frobbed toml for ncollide_utils-0.9.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/ncollide_utils/0.9.1/Cargo.toml
[INFO] started frobbing ncollide_utils-0.9.1
[INFO] finished frobbing ncollide_utils-0.9.1
[INFO] frobbed toml for ncollide_utils-0.9.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ncollide_utils/0.9.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ncollide_utils-0.9.1 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/reg/ncollide_utils/0.9.1:/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] d61fcd78cdcf3594f57199ac54598bd831ea63ced288cc0568f9ba6e94980d3e
[INFO] running `"docker" "start" "-a" "d61fcd78cdcf3594f57199ac54598bd831ea63ced288cc0568f9ba6e94980d3e"`
[INFO] [stderr]    Compiling nalgebra v0.14.4
[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-0.14.4/src/core/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]    Compiling ncollide_math v0.9.1
[INFO] [stderr]    Compiling ncollide_utils v0.9.1 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `unused`
[INFO] [stderr]   --> data/pair.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     unused: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.36s
[INFO] running `"docker" "inspect" "d61fcd78cdcf3594f57199ac54598bd831ea63ced288cc0568f9ba6e94980d3e"`
[INFO] running `"docker" "rm" "-f" "d61fcd78cdcf3594f57199ac54598bd831ea63ced288cc0568f9ba6e94980d3e"`
[INFO] [stdout] d61fcd78cdcf3594f57199ac54598bd831ea63ced288cc0568f9ba6e94980d3e
[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/reg/ncollide_utils/0.9.1:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] d334b96f7d9d9dfa69cb09bb89d5d0c2a73ae7002d0d180472e3084482800dad
[INFO] running `"docker" "start" "-a" "d334b96f7d9d9dfa69cb09bb89d5d0c2a73ae7002d0d180472e3084482800dad"`
[INFO] [stderr]    Compiling ncollide_utils v0.9.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0425]: cannot find function `approx_eq` in module `na`
[INFO] [stderr]    --> triangle.rs:122:21
[INFO] [stderr]     |
[INFO] [stderr] 122 |         assert!(na::approx_eq(&super::triangle_area(&pa, &pb, &pc), &10.0));
[INFO] [stderr]     |                     ^^^^^^^^^ not found in `na`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `ncollide_utils`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d334b96f7d9d9dfa69cb09bb89d5d0c2a73ae7002d0d180472e3084482800dad"`
[INFO] running `"docker" "rm" "-f" "d334b96f7d9d9dfa69cb09bb89d5d0c2a73ae7002d0d180472e3084482800dad"`
[INFO] [stdout] d334b96f7d9d9dfa69cb09bb89d5d0c2a73ae7002d0d180472e3084482800dad