Sep 21 11:18:49.864 INFO checking discard-1.0.4 against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 21 11:18:49.864 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 21 11:18:49.864 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-5/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/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 +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 11:18:50.118 INFO blam! 3cd07daed60b33665fdb1a8dd45b3ca11736815a67700bbc198609341b23aa55
Sep 21 11:18:50.121 INFO running `"docker" "start" "-a" "3cd07daed60b33665fdb1a8dd45b3ca11736815a67700bbc198609341b23aa55"`
Sep 21 11:18:51.256 INFO kablam! usermod: no changes
Sep 21 11:18:51.296 INFO kablam!     Checking discard v1.0.4 (/source)
Sep 21 11:18:51.726 INFO kablam! warning: unused `DiscardOnDrop` which must be used
Sep 21 11:18:51.726 INFO kablam!    --> src/lib.rs:261:9
Sep 21 11:18:51.726 INFO kablam!     |
Sep 21 11:18:51.726 INFO kablam! 261 |         DiscardOnDrop::new(Foo::new());
Sep 21 11:18:51.726 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 11:18:51.726 INFO kablam!     |
Sep 21 11:18:51.726 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Sep 21 11:18:51.726 INFO kablam!     = note: 
Sep 21 11:18:51.726 INFO kablam!             The DiscardOnDrop is unused, which causes it to be immediately discarded.
Sep 21 11:18:51.726 INFO kablam!             You probably don't want that to happen.
Sep 21 11:18:51.726 INFO kablam!             
Sep 21 11:18:51.726 INFO kablam!             How to fix this:
Sep 21 11:18:51.726 INFO kablam!             
Sep 21 11:18:51.726 INFO kablam!               * Store the DiscardOnDrop in a variable or data structure.
Sep 21 11:18:51.726 INFO kablam!             
Sep 21 11:18:51.726 INFO kablam!               * Or use the DiscardOnDrop::leak function which will cause it to not be
Sep 21 11:18:51.726 INFO kablam!                 discarded (this *will* leak memory!).
Sep 21 11:18:51.726 INFO kablam!             
Sep 21 11:18:51.726 INFO kablam!             See the DiscardOnDrop documentation for more details.
Sep 21 11:18:51.726 INFO kablam! 
Sep 21 11:18:51.726 INFO kablam! warning: unused `DiscardOnDrop` which must be used
Sep 21 11:18:51.730 INFO kablam!    --> src/lib.rs:262:9
Sep 21 11:18:51.730 INFO kablam!     |
Sep 21 11:18:51.730 INFO kablam! 262 |         DiscardOnDrop::new(Foo::new());
Sep 21 11:18:51.730 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 11:18:51.730 INFO kablam!     |
Sep 21 11:18:51.730 INFO kablam!     = note: 
Sep 21 11:18:51.730 INFO kablam!             The DiscardOnDrop is unused, which causes it to be immediately discarded.
Sep 21 11:18:51.730 INFO kablam!             You probably don't want that to happen.
Sep 21 11:18:51.730 INFO kablam!             
Sep 21 11:18:51.730 INFO kablam!             How to fix this:
Sep 21 11:18:51.730 INFO kablam!             
Sep 21 11:18:51.730 INFO kablam!               * Store the DiscardOnDrop in a variable or data structure.
Sep 21 11:18:51.730 INFO kablam!             
Sep 21 11:18:51.730 INFO kablam!               * Or use the DiscardOnDrop::leak function which will cause it to not be
Sep 21 11:18:51.730 INFO kablam!                 discarded (this *will* leak memory!).
Sep 21 11:18:51.730 INFO kablam!             
Sep 21 11:18:51.730 INFO kablam!             See the DiscardOnDrop documentation for more details.
Sep 21 11:18:51.730 INFO kablam! 
Sep 21 11:18:51.751 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
Sep 21 11:18:51.753 INFO kablam! su: No module specific data is present
Sep 21 11:18:52.410 INFO running `"docker" "rm" "-f" "3cd07daed60b33665fdb1a8dd45b3ca11736815a67700bbc198609341b23aa55"`
Sep 21 11:18:52.491 INFO blam! 3cd07daed60b33665fdb1a8dd45b3ca11736815a67700bbc198609341b23aa55