[INFO] updating cached repository bobisme/rustrnn
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bobisme/rustrnn
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bobisme/rustrnn" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/bobisme/rustrnn"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/bobisme/rustrnn'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bobisme/rustrnn" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/bobisme/rustrnn"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/bobisme/rustrnn'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 25573dfa1c0223e4f9a2aa843b63132b139e904a
[INFO] sha for GitHub repo bobisme/rustrnn: 25573dfa1c0223e4f9a2aa843b63132b139e904a
[INFO] validating manifest of bobisme/rustrnn on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of bobisme/rustrnn on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing bobisme/rustrnn
[INFO] finished frobbing bobisme/rustrnn
[INFO] frobbed toml for bobisme/rustrnn written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/bobisme/rustrnn/Cargo.toml
[INFO] started frobbing bobisme/rustrnn
[INFO] finished frobbing bobisme/rustrnn
[INFO] frobbed toml for bobisme/rustrnn written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/bobisme/rustrnn/Cargo.toml
[INFO] crate bobisme/rustrnn already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking bobisme/rustrnn against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-3/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/bobisme/rustrnn:/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 479cdac36b21a19de0e2ffedea24d72ec906066f82d2991591a0bd42dab20712
[INFO] running `"docker" "start" "-a" "479cdac36b21a19de0e2ffedea24d72ec906066f82d2991591a0bd42dab20712"`
[INFO] [stderr]     Checking rustrnn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `Layer`
[INFO] [stderr]  --> src/layer.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Layer {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/layer.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn new(input_size: usize, size: usize) -> Layer {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]   --> src/layer.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn size(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `input_size`
[INFO] [stderr]   --> src/layer.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn input_size(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/matrix.rs:440:13
[INFO] [stderr]     |
[INFO] [stderr] 440 |             m1 + &m2;
[INFO] [stderr]     |             ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]    --> src/matrix.rs:488:13
[INFO] [stderr]     |
[INFO] [stderr] 488 |             m1 - &m2;
[INFO] [stderr]     |             ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "479cdac36b21a19de0e2ffedea24d72ec906066f82d2991591a0bd42dab20712"`
[INFO] running `"docker" "rm" "-f" "479cdac36b21a19de0e2ffedea24d72ec906066f82d2991591a0bd42dab20712"`
[INFO] [stdout] 479cdac36b21a19de0e2ffedea24d72ec906066f82d2991591a0bd42dab20712