Oct 13 16:01:45.393 INFO checking discard-1.0.4 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 16:01:45.393 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-1/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-1/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 13 16:01:45.857 INFO blam! 11b359251737d849f2eef8431ae4127fc5eb35ea1c3e7a8c955a9ef5eb488b5c
Oct 13 16:01:45.868 INFO running `"docker" "start" "-a" "11b359251737d849f2eef8431ae4127fc5eb35ea1c3e7a8c955a9ef5eb488b5c"`
Oct 13 16:01:47.248 INFO kablam! usermod: no changes
Oct 13 16:01:47.308 INFO kablam!     Checking discard v1.0.4 (/source)
Oct 13 16:01:48.552 INFO kablam! warning: unused `DiscardOnDrop` which must be used
Oct 13 16:01:48.552 INFO kablam!    --> src/lib.rs:261:9
Oct 13 16:01:48.552 INFO kablam!     |
Oct 13 16:01:48.552 INFO kablam! 261 |         DiscardOnDrop::new(Foo::new());
Oct 13 16:01:48.552 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 16:01:48.552 INFO kablam!     |
Oct 13 16:01:48.552 INFO kablam!     = note: #[warn(unused_must_use)] on by default
Oct 13 16:01:48.552 INFO kablam!     = note: 
Oct 13 16:01:48.552 INFO kablam!             The DiscardOnDrop is unused, which causes it to be immediately discarded.
Oct 13 16:01:48.552 INFO kablam!             You probably don't want that to happen.
Oct 13 16:01:48.552 INFO kablam!             
Oct 13 16:01:48.552 INFO kablam!             How to fix this:
Oct 13 16:01:48.552 INFO kablam!             
Oct 13 16:01:48.552 INFO kablam!               * Store the DiscardOnDrop in a variable or data structure.
Oct 13 16:01:48.552 INFO kablam!             
Oct 13 16:01:48.552 INFO kablam!               * Or use the DiscardOnDrop::leak function which will cause it to not be
Oct 13 16:01:48.552 INFO kablam!                 discarded (this *will* leak memory!).
Oct 13 16:01:48.552 INFO kablam!             
Oct 13 16:01:48.552 INFO kablam!             See the DiscardOnDrop documentation for more details.
Oct 13 16:01:48.552 INFO kablam! 
Oct 13 16:01:48.552 INFO kablam! warning: unused `DiscardOnDrop` which must be used
Oct 13 16:01:48.552 INFO kablam!    --> src/lib.rs:262:9
Oct 13 16:01:48.552 INFO kablam!     |
Oct 13 16:01:48.552 INFO kablam! 262 |         DiscardOnDrop::new(Foo::new());
Oct 13 16:01:48.552 INFO kablam!     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 16:01:48.552 INFO kablam!     |
Oct 13 16:01:48.552 INFO kablam!     = note: 
Oct 13 16:01:48.552 INFO kablam!             The DiscardOnDrop is unused, which causes it to be immediately discarded.
Oct 13 16:01:48.552 INFO kablam!             You probably don't want that to happen.
Oct 13 16:01:48.552 INFO kablam!             
Oct 13 16:01:48.552 INFO kablam!             How to fix this:
Oct 13 16:01:48.552 INFO kablam!             
Oct 13 16:01:48.552 INFO kablam!               * Store the DiscardOnDrop in a variable or data structure.
Oct 13 16:01:48.552 INFO kablam!             
Oct 13 16:01:48.552 INFO kablam!               * Or use the DiscardOnDrop::leak function which will cause it to not be
Oct 13 16:01:48.552 INFO kablam!                 discarded (this *will* leak memory!).
Oct 13 16:01:48.552 INFO kablam!             
Oct 13 16:01:48.552 INFO kablam!             See the DiscardOnDrop documentation for more details.
Oct 13 16:01:48.552 INFO kablam! 
Oct 13 16:01:48.565 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
Oct 13 16:01:48.567 INFO kablam! su: No module specific data is present
Oct 13 16:01:49.142 INFO running `"docker" "rm" "-f" "11b359251737d849f2eef8431ae4127fc5eb35ea1c3e7a8c955a9ef5eb488b5c"`
Oct 13 16:01:49.464 INFO blam! 11b359251737d849f2eef8431ae4127fc5eb35ea1c3e7a8c955a9ef5eb488b5c