Sep 06 07:56:12.292 INFO checking discard-1.0.3 against master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6 for pr-53854
Sep 06 07:56:12.292 INFO running: cargo +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets
Sep 06 07:56:12.292 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53854/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-2/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/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 +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 07:56:12.459 INFO blam! 5516c77447d315099b68fbd4df4cbe32ed322a88a94c4b3c618927ef2e4fc252
Sep 06 07:56:12.461 INFO running `"docker" "start" "-a" "5516c77447d315099b68fbd4df4cbe32ed322a88a94c4b3c618927ef2e4fc252"`
Sep 06 07:56:13.726 INFO kablam! usermod: no changes
Sep 06 07:56:13.747 INFO kablam!     Checking discard v1.0.3 (file:///source)
Sep 06 07:56:14.170 INFO kablam! warning: unused `DiscardOnDrop` which must be used
Sep 06 07:56:14.170 INFO kablam!    --> src/lib.rs:251:9
Sep 06 07:56:14.170 INFO kablam!     |
Sep 06 07:56:14.170 INFO kablam! 251 |         DiscardOnDrop::new(Foo::new());
Sep 06 07:56:14.170 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 06 07:56:14.170 INFO kablam!     |
Sep 06 07:56:14.170 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 06 07:56:14.170 INFO kablam!     = note: 
Sep 06 07:56:14.170 INFO kablam!             
Sep 06 07:56:14.170 INFO kablam!                  The DiscardOnDrop is unused, which causes it to be immediately discarded.
Sep 06 07:56:14.170 INFO kablam!                  You probably don't want that to happen.
Sep 06 07:56:14.170 INFO kablam!             
Sep 06 07:56:14.170 INFO kablam!                  How to fix this:
Sep 06 07:56:14.170 INFO kablam!             
Sep 06 07:56:14.170 INFO kablam!                    * Store the DiscardOnDrop in a variable or data structure.
Sep 06 07:56:14.170 INFO kablam!             
Sep 06 07:56:14.170 INFO kablam!                    * Or use the DiscardOnDrop::leak function which will cause it to not be
Sep 06 07:56:14.170 INFO kablam!                      discarded (this *will* leak memory!).
Sep 06 07:56:14.170 INFO kablam!             
Sep 06 07:56:14.170 INFO kablam!                  See the documentation for more details.
Sep 06 07:56:14.170 INFO kablam!             
Sep 06 07:56:14.170 INFO kablam! 
Sep 06 07:56:14.188 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
Sep 06 07:56:14.198 INFO kablam! su: No module specific data is present
Sep 06 07:56:14.886 INFO running `"docker" "rm" "-f" "5516c77447d315099b68fbd4df4cbe32ed322a88a94c4b3c618927ef2e4fc252"`
Sep 06 07:56:14.977 INFO blam! 5516c77447d315099b68fbd4df4cbe32ed322a88a94c4b3c618927ef2e4fc252