Sep 10 14:49:43.089 INFO checking matrix_display-0.2.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 14:49:43.089 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 14:49:43.089 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-4/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 14:49:43.216 INFO blam! 36e2c433b2d07243d5bf548ccddb89bd747e9a223dc6c3cc878d809343fb6cd9
Sep 10 14:49:43.217 INFO running `"docker" "start" "-a" "36e2c433b2d07243d5bf548ccddb89bd747e9a223dc6c3cc878d809343fb6cd9"`
Sep 10 14:49:44.542 INFO kablam! usermod: no changes
Sep 10 14:49:44.576 INFO kablam!     Checking matrix_display v0.2.0 (file:///source)
Sep 10 14:49:44.880 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Sep 10 14:49:44.880 INFO kablam!    --> src/lib.rs:258:9
Sep 10 14:49:44.880 INFO kablam!     |
Sep 10 14:49:44.880 INFO kablam! 258 | /         self.mat
Sep 10 14:49:44.880 INFO kablam! 259 | |             .enumerate_cells()
Sep 10 14:49:44.880 INFO kablam! 260 | |             .chunks(self.n_cols())
Sep 10 14:49:44.880 INFO kablam! 261 | |             .into_iter()
Sep 10 14:49:44.880 INFO kablam! ...   |
Sep 10 14:49:44.880 INFO kablam! 269 | |             })
Sep 10 14:49:44.880 INFO kablam! 270 | |             .collect::<Vec<_>>();
Sep 10 14:49:44.880 INFO kablam!     | |_________________________________^
Sep 10 14:49:44.880 INFO kablam!     |
Sep 10 14:49:44.880 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 10 14:49:44.880 INFO kablam!     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Sep 10 14:49:44.880 INFO kablam! 
Sep 10 14:49:45.111 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Sep 10 14:49:45.111 INFO kablam!    --> src/lib.rs:258:9
Sep 10 14:49:45.111 INFO kablam!     |
Sep 10 14:49:45.111 INFO kablam! 258 | /         self.mat
Sep 10 14:49:45.111 INFO kablam! 259 | |             .enumerate_cells()
Sep 10 14:49:45.111 INFO kablam! 260 | |             .chunks(self.n_cols())
Sep 10 14:49:45.111 INFO kablam! 261 | |             .into_iter()
Sep 10 14:49:45.111 INFO kablam! ...   |
Sep 10 14:49:45.111 INFO kablam! 269 | |             })
Sep 10 14:49:45.111 INFO kablam! 270 | |             .collect::<Vec<_>>();
Sep 10 14:49:45.111 INFO kablam!     | |_________________________________^
Sep 10 14:49:45.111 INFO kablam!     |
Sep 10 14:49:45.111 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 10 14:49:45.111 INFO kablam!     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Sep 10 14:49:45.111 INFO kablam! 
Sep 10 14:49:45.210 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
Sep 10 14:49:45.210 INFO kablam! su: No module specific data is present
Sep 10 14:49:45.773 INFO running `"docker" "rm" "-f" "36e2c433b2d07243d5bf548ccddb89bd747e9a223dc6c3cc878d809343fb6cd9"`
Sep 10 14:49:45.911 INFO blam! 36e2c433b2d07243d5bf548ccddb89bd747e9a223dc6c3cc878d809343fb6cd9