Sep 21 07:13:00.351 INFO checking matrix_display-0.2.0 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 07:13:00.351 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 07:13:00.351 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-2/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 07:13:00.492 INFO blam! 7281ecd5d80bacefa9d1fd333aab8254391a3af0b3b3912f214b650e3f681667
Sep 21 07:13:00.493 INFO running `"docker" "start" "-a" "7281ecd5d80bacefa9d1fd333aab8254391a3af0b3b3912f214b650e3f681667"`
Sep 21 07:13:01.225 INFO kablam! usermod: no changes
Sep 21 07:13:01.286 INFO kablam!     Checking matrix_display v0.2.0 (/source)
Sep 21 07:13:01.766 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Sep 21 07:13:01.766 INFO kablam!    --> src/lib.rs:258:9
Sep 21 07:13:01.766 INFO kablam!     |
Sep 21 07:13:01.766 INFO kablam! 258 | /         self.mat
Sep 21 07:13:01.766 INFO kablam! 259 | |             .enumerate_cells()
Sep 21 07:13:01.766 INFO kablam! 260 | |             .chunks(self.n_cols())
Sep 21 07:13:01.766 INFO kablam! 261 | |             .into_iter()
Sep 21 07:13:01.766 INFO kablam! ...   |
Sep 21 07:13:01.766 INFO kablam! 269 | |             })
Sep 21 07:13:01.766 INFO kablam! 270 | |             .collect::<Vec<_>>();
Sep 21 07:13:01.766 INFO kablam!     | |_________________________________^
Sep 21 07:13:01.766 INFO kablam!     |
Sep 21 07:13:01.766 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 21 07:13:01.766 INFO kablam!     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Sep 21 07:13:01.766 INFO kablam! 
Sep 21 07:13:02.028 INFO kablam! warning: unused return value of `std::iter::Iterator::collect` which must be used
Sep 21 07:13:02.028 INFO kablam!    --> src/lib.rs:258:9
Sep 21 07:13:02.028 INFO kablam!     |
Sep 21 07:13:02.028 INFO kablam! 258 | /         self.mat
Sep 21 07:13:02.028 INFO kablam! 259 | |             .enumerate_cells()
Sep 21 07:13:02.028 INFO kablam! 260 | |             .chunks(self.n_cols())
Sep 21 07:13:02.028 INFO kablam! 261 | |             .into_iter()
Sep 21 07:13:02.028 INFO kablam! ...   |
Sep 21 07:13:02.028 INFO kablam! 269 | |             })
Sep 21 07:13:02.028 INFO kablam! 270 | |             .collect::<Vec<_>>();
Sep 21 07:13:02.028 INFO kablam!     | |_________________________________^
Sep 21 07:13:02.028 INFO kablam!     |
Sep 21 07:13:02.028 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 21 07:13:02.028 INFO kablam!     = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
Sep 21 07:13:02.028 INFO kablam! 
Sep 21 07:13:02.340 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
Sep 21 07:13:02.344 INFO kablam! su: No module specific data is present
Sep 21 07:13:02.986 INFO running `"docker" "rm" "-f" "7281ecd5d80bacefa9d1fd333aab8254391a3af0b3b3912f214b650e3f681667"`
Sep 21 07:13:03.085 INFO blam! 7281ecd5d80bacefa9d1fd333aab8254391a3af0b3b3912f214b650e3f681667