Sep 10 15:55:22.484 INFO checking ktensor-0.1.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 15:55:22.484 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 15:55:22.484 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-5/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 15:55:22.667 INFO blam! bc421d0856f59c00242186ba0741473b1786634a3c63257ed2039e2b8b829da4
Sep 10 15:55:22.669 INFO running `"docker" "start" "-a" "bc421d0856f59c00242186ba0741473b1786634a3c63257ed2039e2b8b829da4"`
Sep 10 15:55:23.468 INFO kablam! usermod: no changes
Sep 10 15:55:23.531 INFO kablam!     Checking ktensor v0.1.0 (file:///source)
Sep 10 15:55:25.270 INFO kablam! warning: function is never used: `read_u8`
Sep 10 15:55:25.270 INFO kablam!  --> tests/mnist.rs:9:1
Sep 10 15:55:25.270 INFO kablam!   |
Sep 10 15:55:25.270 INFO kablam! 9 | fn read_u8(reader: &mut Read) -> u8 {
Sep 10 15:55:25.270 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 15:55:25.270 INFO kablam!   |
Sep 10 15:55:25.270 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 10 15:55:25.270 INFO kablam! 
Sep 10 15:55:25.299 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
Sep 10 15:55:25.302 INFO kablam! su: No module specific data is present
Sep 10 15:55:25.937 INFO running `"docker" "rm" "-f" "bc421d0856f59c00242186ba0741473b1786634a3c63257ed2039e2b8b829da4"`
Sep 10 15:55:26.025 INFO blam! bc421d0856f59c00242186ba0741473b1786634a3c63257ed2039e2b8b829da4