[INFO] crate myelin-engine 0.11.0 is already in cache
[INFO] extracting crate myelin-engine 0.11.0 into work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/reg/myelin-engine/0.11.0
[INFO] extracting crate myelin-engine 0.11.0 into work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/reg/myelin-engine/0.11.0
[INFO] validating manifest of myelin-engine-0.11.0 on toolchain master#589beb979c0f1a9736e02e578913db88398c3ba5
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of myelin-engine-0.11.0 on toolchain try#42445ded8fd34235a676755cb5d079658ed51f6a
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+42445ded8fd34235a676755cb5d079658ed51f6a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing myelin-engine-0.11.0
[INFO] finished frobbing myelin-engine-0.11.0
[INFO] frobbed toml for myelin-engine-0.11.0 written to work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/reg/myelin-engine/0.11.0/Cargo.toml
[INFO] started frobbing myelin-engine-0.11.0
[INFO] finished frobbing myelin-engine-0.11.0
[INFO] frobbed toml for myelin-engine-0.11.0 written to work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/reg/myelin-engine/0.11.0/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+42445ded8fd34235a676755cb5d079658ed51f6a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+42445ded8fd34235a676755cb5d079658ed51f6a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking myelin-engine-0.11.0 against master#589beb979c0f1a9736e02e578913db88398c3ba5 for pr-60944
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60944/worker-3/master#589beb979c0f1a9736e02e578913db88398c3ba5:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/reg/myelin-engine/0.11.0:/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" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3d8caf27204510239c2a7cd8a6d5b22eab273d9e623880a00dc10cb65f87c371
[INFO] running `"docker" "start" "-a" "3d8caf27204510239c2a7cd8a6d5b22eab273d9e623880a00dc10cb65f87c371"`
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]     Checking nameof v1.0.2
[INFO] [stderr]     Checking alga v0.8.2
[INFO] [stderr]     Checking nalgebra v0.17.3
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]    Compiling mockiato-codegen v0.4.2
[INFO] [stderr]     Checking mockiato v0.4.2
[INFO] [stderr]     Checking myelin-geometry v2.4.0
[INFO] [stderr] warning[E0502]: cannot borrow `b` as immutable because it is also borrowed as mutable
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.17.3/src/sparse/cs_matrix_solve.rs:81:29
[INFO] [stderr]    |
[INFO] [stderr] 81 |                     b[i] -= b[j] * val;
[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] warning[E0502]: cannot borrow `b` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.17.3/src/sparse/cs_matrix_solve.rs:122:39
[INFO] [stderr]     |
[INFO] [stderr] 122 |                         b[j] -= val * b[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] warning[E0502]: cannot borrow `workspace` as immutable because it is also borrowed as mutable
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.17.3/src/sparse/cs_matrix_solve.rs:181:33
[INFO] [stderr]     |
[INFO] [stderr] 181 |                 workspace[i] -= workspace[j] * val;
[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 ncollide2d v0.18.4
[INFO] [stderr]     Checking nphysics2d v0.10.3
[INFO] [stderr]     Checking myelin-engine v0.11.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 14s
[INFO] running `"docker" "inspect" "3d8caf27204510239c2a7cd8a6d5b22eab273d9e623880a00dc10cb65f87c371"`
[INFO] running `"docker" "rm" "-f" "3d8caf27204510239c2a7cd8a6d5b22eab273d9e623880a00dc10cb65f87c371"`
[INFO] [stdout] 3d8caf27204510239c2a7cd8a6d5b22eab273d9e623880a00dc10cb65f87c371