Sep 18 01:37:41.167 INFO checking discard-1.0.3 against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 18 01:37:41.167 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 18 01:37:41.167 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-5/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/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 +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 18 01:37:41.486 INFO blam! 64c6762f71d4898d2c57902b46927b52e333f1c2b6ed31f276ddb6f133c12dac
Sep 18 01:37:41.489 INFO running `"docker" "start" "-a" "64c6762f71d4898d2c57902b46927b52e333f1c2b6ed31f276ddb6f133c12dac"`
Sep 18 01:37:43.061 INFO kablam! usermod: no changes
Sep 18 01:37:43.135 INFO kablam!     Checking discard v1.0.3 (/source)
Sep 18 01:37:43.676 INFO kablam! warning: unused `DiscardOnDrop` which must be used
Sep 18 01:37:43.676 INFO kablam!    --> src/lib.rs:251:9
Sep 18 01:37:43.676 INFO kablam!     |
Sep 18 01:37:43.676 INFO kablam! 251 |         DiscardOnDrop::new(Foo::new());
Sep 18 01:37:43.676 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 18 01:37:43.676 INFO kablam!     |
Sep 18 01:37:43.676 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 18 01:37:43.676 INFO kablam!     = note: 
Sep 18 01:37:43.676 INFO kablam!             
Sep 18 01:37:43.676 INFO kablam!                  The DiscardOnDrop is unused, which causes it to be immediately discarded.
Sep 18 01:37:43.677 INFO kablam!                  You probably don't want that to happen.
Sep 18 01:37:43.677 INFO kablam!             
Sep 18 01:37:43.677 INFO kablam!                  How to fix this:
Sep 18 01:37:43.677 INFO kablam!             
Sep 18 01:37:43.677 INFO kablam!                    * Store the DiscardOnDrop in a variable or data structure.
Sep 18 01:37:43.677 INFO kablam!             
Sep 18 01:37:43.677 INFO kablam!                    * Or use the DiscardOnDrop::leak function which will cause it to not be
Sep 18 01:37:43.677 INFO kablam!                      discarded (this *will* leak memory!).
Sep 18 01:37:43.677 INFO kablam!             
Sep 18 01:37:43.677 INFO kablam!                  See the documentation for more details.
Sep 18 01:37:43.677 INFO kablam!             
Sep 18 01:37:43.677 INFO kablam! 
Sep 18 01:37:43.690 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
Sep 18 01:37:43.692 INFO kablam! su: No module specific data is present
Sep 18 01:37:44.537 INFO running `"docker" "rm" "-f" "64c6762f71d4898d2c57902b46927b52e333f1c2b6ed31f276ddb6f133c12dac"`
Sep 18 01:37:44.666 INFO blam! 64c6762f71d4898d2c57902b46927b52e333f1c2b6ed31f276ddb6f133c12dac