Sep 01 20:08:35.982 INFO checking unused_variable-1.0.0 against try#952c7dbfa2628309f557b367929ffc17af20b332 for pr-53851
Sep 01 20:08:35.982 INFO running: cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets
Sep 01 20:08:35.982 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53851/try#952c7dbfa2628309f557b367929ffc17af20b332:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-1/try#952c7dbfa2628309f557b367929ffc17af20b332:/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=500" "-e" "CMD=cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 20:08:36.177 INFO blam! 6ae86c0ca2ec20b5d923b8d8afb1328b82cad2808dfbaac085f4669eb4a177af
Sep 01 20:08:36.179 INFO running `"docker" "start" "-a" "6ae86c0ca2ec20b5d923b8d8afb1328b82cad2808dfbaac085f4669eb4a177af"`
Sep 01 20:08:36.775 INFO kablam!     Checking unused_variable v1.0.0 (file:///source)
Sep 01 20:08:37.124 INFO kablam! warning: expected `;`, found `<eof>`
Sep 01 20:08:37.124 INFO kablam!  --> <unused_variable macros>:1:32
Sep 01 20:08:37.124 INFO kablam!   |
Sep 01 20:08:37.124 INFO kablam! 1 | ( $ expr : expr ) => { let _ = $ expr }
Sep 01 20:08:37.124 INFO kablam!   |                                ^^^^^^
Sep 01 20:08:37.124 INFO kablam!   |
Sep 01 20:08:37.124 INFO kablam!   = note: This was erroneously allowed and will become a hard error in a future release
Sep 01 20:08:37.124 INFO kablam! 
Sep 01 20:08:37.181 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
Sep 01 20:08:37.184 INFO kablam! su: No module specific data is present
Sep 01 20:08:37.571 INFO running `"docker" "rm" "-f" "6ae86c0ca2ec20b5d923b8d8afb1328b82cad2808dfbaac085f4669eb4a177af"`
Sep 01 20:08:37.673 INFO blam! 6ae86c0ca2ec20b5d923b8d8afb1328b82cad2808dfbaac085f4669eb4a177af