[INFO] updating cached repository cwchentw/gsl_matrix_demo_in_Rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cwchentw/gsl_matrix_demo_in_Rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cwchentw/gsl_matrix_demo_in_Rust" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/cwchentw/gsl_matrix_demo_in_Rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/cwchentw/gsl_matrix_demo_in_Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cwchentw/gsl_matrix_demo_in_Rust" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/cwchentw/gsl_matrix_demo_in_Rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/cwchentw/gsl_matrix_demo_in_Rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b4637ca3e37819421376c67a288d396e7b8721b3
[INFO] sha for GitHub repo cwchentw/gsl_matrix_demo_in_Rust: b4637ca3e37819421376c67a288d396e7b8721b3
[INFO] validating manifest of cwchentw/gsl_matrix_demo_in_Rust on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cwchentw/gsl_matrix_demo_in_Rust on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cwchentw/gsl_matrix_demo_in_Rust
[INFO] finished frobbing cwchentw/gsl_matrix_demo_in_Rust
[INFO] frobbed toml for cwchentw/gsl_matrix_demo_in_Rust written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/cwchentw/gsl_matrix_demo_in_Rust/Cargo.toml
[INFO] started frobbing cwchentw/gsl_matrix_demo_in_Rust
[INFO] finished frobbing cwchentw/gsl_matrix_demo_in_Rust
[INFO] frobbed toml for cwchentw/gsl_matrix_demo_in_Rust written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/cwchentw/gsl_matrix_demo_in_Rust/Cargo.toml
[INFO] crate cwchentw/gsl_matrix_demo_in_Rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cwchentw/gsl_matrix_demo_in_Rust against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-5/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/cwchentw/gsl_matrix_demo_in_Rust:/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=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" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ae4ad2e14cc06136bcede81f1ff5e1ead802a41a9704c2c9e5f2a284ee00a765
[INFO] running `"docker" "start" "-a" "ae4ad2e14cc06136bcede81f1ff5e1ead802a41a9704c2c9e5f2a284ee00a765"`
[INFO] [stderr]     Checking gsl_matrix_demo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:161:9
[INFO] [stderr]     |
[INFO] [stderr] 161 |     let mut m3 = gsl::Matrix::dot(&m1, &m2);
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:161:9
[INFO] [stderr]     |
[INFO] [stderr] 161 |     let mut m3 = gsl::Matrix::dot(&m1, &m2);
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CblasTrans`
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         CblasTrans=112,
[INFO] [stderr]   |         ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CblasConjTrans`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         CblasConjTrans=113
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CblasTrans`
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         CblasTrans=112,
[INFO] [stderr]   |         ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CblasConjTrans`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |         CblasConjTrans=113
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "ae4ad2e14cc06136bcede81f1ff5e1ead802a41a9704c2c9e5f2a284ee00a765"`
[INFO] running `"docker" "rm" "-f" "ae4ad2e14cc06136bcede81f1ff5e1ead802a41a9704c2c9e5f2a284ee00a765"`
[INFO] [stdout] ae4ad2e14cc06136bcede81f1ff5e1ead802a41a9704c2c9e5f2a284ee00a765