[INFO] updating cached repository https://github.com/bartwojcik/vulkano-matmul
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a3295c1e8cee087febdb87fb06f3b296209cb5dd
[INFO] checking bartwojcik/vulkano-matmul against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbartwojcik%2Fvulkano-matmul" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bartwojcik/vulkano-matmul on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/bartwojcik/vulkano-matmul
[INFO] finished tweaking git repo https://github.com/bartwojcik/vulkano-matmul
[INFO] tweaked toml for git repo https://github.com/bartwojcik/vulkano-matmul written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/bartwojcik/vulkano-matmul already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] d72dd8d99343509faa8b743b833adbdabfff79721e2de0fc19bcafd40c4f87a4
[INFO] running `"docker" "start" "-a" "d72dd8d99343509faa8b743b833adbdabfff79721e2de0fc19bcafd40c4f87a4"`
[INFO] [stderr]    Compiling libc v0.2.30
[INFO] [stderr]    Compiling vulkano v0.7.1
[INFO] [stderr]     Checking half v1.0.1
[INFO] [stderr]     Checking vk-sys v0.3.1
[INFO] [stderr]     Checking smallvec v0.4.3
[INFO] [stderr]    Compiling cmake v0.1.25
[INFO] [stderr]     Checking shared_library v0.1.7
[INFO] [stderr]    Compiling glsl-to-spirv v0.1.3
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling tempdir v0.3.5
[INFO] [stderr]    Compiling vulkano-shaders v0.7.1
[INFO] [stderr]    Compiling vulkano-shader-derive v0.7.1
[INFO] [stderr]     Checking vulkano_matmul v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut c = [0f32; N * M];
[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: struct is never constructed: `Dummy`
[INFO] [stderr]   --> src/main.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     struct Dummy;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut c = [0f32; N * M];
[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: struct is never constructed: `Dummy`
[INFO] [stderr]   --> src/main.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     struct Dummy;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 44s
[INFO] running `"docker" "inspect" "d72dd8d99343509faa8b743b833adbdabfff79721e2de0fc19bcafd40c4f87a4"`
[INFO] running `"docker" "rm" "-f" "d72dd8d99343509faa8b743b833adbdabfff79721e2de0fc19bcafd40c4f87a4"`
[INFO] [stdout] d72dd8d99343509faa8b743b833adbdabfff79721e2de0fc19bcafd40c4f87a4