Sep 21 08:31:08.526 INFO checking immutable-0.1.1 against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 21 08:31:08.526 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 21 08:31:08.526 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-3/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 08:31:08.729 INFO blam! f9061b2f5d223e40cc67b15c511d900361996ca4c10494c6433ade743b681f45
Sep 21 08:31:08.731 INFO running `"docker" "start" "-a" "f9061b2f5d223e40cc67b15c511d900361996ca4c10494c6433ade743b681f45"`
Sep 21 08:31:09.830 INFO kablam! usermod: no changes
Sep 21 08:31:09.857 INFO kablam!     Checking immutable v0.1.1 (/source)
Sep 21 08:31:10.105 INFO kablam! warning: unused import: `std::vec::IntoIter`
Sep 21 08:31:10.105 INFO kablam!  --> src/list.rs:7:5
Sep 21 08:31:10.105 INFO kablam!   |
Sep 21 08:31:10.105 INFO kablam! 7 | use std::vec::IntoIter;
Sep 21 08:31:10.105 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Sep 21 08:31:10.105 INFO kablam!   |
Sep 21 08:31:10.105 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 21 08:31:10.105 INFO kablam! 
Sep 21 08:31:10.156 INFO kablam! warning: unused import: `std::vec::IntoIter`
Sep 21 08:31:10.156 INFO kablam!  --> src/list.rs:7:5
Sep 21 08:31:10.157 INFO kablam!   |
Sep 21 08:31:10.157 INFO kablam! 7 | use std::vec::IntoIter;
Sep 21 08:31:10.157 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Sep 21 08:31:10.157 INFO kablam!   |
Sep 21 08:31:10.157 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 21 08:31:10.157 INFO kablam! 
Sep 21 08:31:10.306 INFO kablam! warning: unused attribute
Sep 21 08:31:10.306 INFO kablam!  --> src/list.rs:9:1
Sep 21 08:31:10.306 INFO kablam!   |
Sep 21 08:31:10.306 INFO kablam! 9 | #[macro_escape]
Sep 21 08:31:10.306 INFO kablam!   | ^^^^^^^^^^^^^^^
Sep 21 08:31:10.306 INFO kablam!   |
Sep 21 08:31:10.306 INFO kablam!   = note: #[warn(unused_attributes)] on by default
Sep 21 08:31:10.306 INFO kablam! 
Sep 21 08:31:10.306 INFO kablam! warning: unused attribute
Sep 21 08:31:10.306 INFO kablam!   --> src/tree/binary_tree.rs:11:1
Sep 21 08:31:10.306 INFO kablam!    |
Sep 21 08:31:10.306 INFO kablam! 11 | #[macro_escape]
Sep 21 08:31:10.306 INFO kablam!    | ^^^^^^^^^^^^^^^
Sep 21 08:31:10.306 INFO kablam! 
Sep 21 08:31:10.448 INFO kablam! warning: unused attribute
Sep 21 08:31:10.448 INFO kablam!  --> src/list.rs:9:1
Sep 21 08:31:10.448 INFO kablam!   |
Sep 21 08:31:10.448 INFO kablam! 9 | #[macro_escape]
Sep 21 08:31:10.448 INFO kablam!   | ^^^^^^^^^^^^^^^
Sep 21 08:31:10.448 INFO kablam! 
Sep 21 08:31:10.448 INFO kablam! warning: unused attribute
Sep 21 08:31:10.448 INFO kablam!   --> src/tree/binary_tree.rs:11:1
Sep 21 08:31:10.448 INFO kablam!    |
Sep 21 08:31:10.448 INFO kablam! 11 | #[macro_escape]
Sep 21 08:31:10.448 INFO kablam!    | ^^^^^^^^^^^^^^^
Sep 21 08:31:10.448 INFO kablam! 
Sep 21 08:31:10.474 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
Sep 21 08:31:10.476 INFO kablam! su: No module specific data is present
Sep 21 08:31:11.043 INFO running `"docker" "rm" "-f" "f9061b2f5d223e40cc67b15c511d900361996ca4c10494c6433ade743b681f45"`
Sep 21 08:31:11.098 INFO blam! f9061b2f5d223e40cc67b15c511d900361996ca4c10494c6433ade743b681f45