Sep 01 16:57:51.329 INFO checking immutable-0.1.1 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 01 16:57:51.329 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 01 16:57:51.329 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-1/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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 +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 16:57:51.522 INFO blam! 1db834cdfe7e832f173a9f3931291bec1bcb05beb091c7d1defa54a115ff865b
Sep 01 16:57:51.524 INFO running `"docker" "start" "-a" "1db834cdfe7e832f173a9f3931291bec1bcb05beb091c7d1defa54a115ff865b"`
Sep 01 16:57:52.300 INFO kablam!     Checking immutable v0.1.1 (file:///source)
Sep 01 16:57:52.710 INFO kablam! warning: unused import: `std::vec::IntoIter`
Sep 01 16:57:52.711 INFO kablam!  --> src/list.rs:7:5
Sep 01 16:57:52.711 INFO kablam!   |
Sep 01 16:57:52.711 INFO kablam! 7 | use std::vec::IntoIter;
Sep 01 16:57:52.711 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Sep 01 16:57:52.711 INFO kablam!   |
Sep 01 16:57:52.711 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 01 16:57:52.711 INFO kablam! 
Sep 01 16:57:52.779 INFO kablam! warning: unused import: `std::vec::IntoIter`
Sep 01 16:57:52.779 INFO kablam!  --> src/list.rs:7:5
Sep 01 16:57:52.779 INFO kablam!   |
Sep 01 16:57:52.779 INFO kablam! 7 | use std::vec::IntoIter;
Sep 01 16:57:52.780 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Sep 01 16:57:52.780 INFO kablam!   |
Sep 01 16:57:52.780 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 01 16:57:52.780 INFO kablam! 
Sep 01 16:57:53.129 INFO kablam! warning: unused attribute
Sep 01 16:57:53.129 INFO kablam!  --> src/list.rs:9:1
Sep 01 16:57:53.129 INFO kablam!   |
Sep 01 16:57:53.129 INFO kablam! 9 | #[macro_escape]
Sep 01 16:57:53.129 INFO kablam!   | ^^^^^^^^^^^^^^^
Sep 01 16:57:53.129 INFO kablam!   |
Sep 01 16:57:53.129 INFO kablam!   = note: #[warn(unused_attributes)] on by default
Sep 01 16:57:53.129 INFO kablam! 
Sep 01 16:57:53.129 INFO kablam! warning: unused attribute
Sep 01 16:57:53.129 INFO kablam!   --> src/tree/binary_tree.rs:11:1
Sep 01 16:57:53.129 INFO kablam!    |
Sep 01 16:57:53.129 INFO kablam! 11 | #[macro_escape]
Sep 01 16:57:53.129 INFO kablam!    | ^^^^^^^^^^^^^^^
Sep 01 16:57:53.129 INFO kablam! 
Sep 01 16:57:53.273 INFO kablam! warning: unused attribute
Sep 01 16:57:53.273 INFO kablam!  --> src/list.rs:9:1
Sep 01 16:57:53.273 INFO kablam!   |
Sep 01 16:57:53.273 INFO kablam! 9 | #[macro_escape]
Sep 01 16:57:53.273 INFO kablam!   | ^^^^^^^^^^^^^^^
Sep 01 16:57:53.273 INFO kablam!   |
Sep 01 16:57:53.273 INFO kablam!   = note: #[warn(unused_attributes)] on by default
Sep 01 16:57:53.273 INFO kablam! 
Sep 01 16:57:53.273 INFO kablam! warning: unused attribute
Sep 01 16:57:53.273 INFO kablam!   --> src/tree/binary_tree.rs:11:1
Sep 01 16:57:53.273 INFO kablam!    |
Sep 01 16:57:53.273 INFO kablam! 11 | #[macro_escape]
Sep 01 16:57:53.273 INFO kablam!    | ^^^^^^^^^^^^^^^
Sep 01 16:57:53.273 INFO kablam! 
Sep 01 16:57:53.286 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
Sep 01 16:57:53.288 INFO kablam! su: No module specific data is present
Sep 01 16:57:53.922 INFO running `"docker" "rm" "-f" "1db834cdfe7e832f173a9f3931291bec1bcb05beb091c7d1defa54a115ff865b"`
Sep 01 16:57:54.009 INFO blam! 1db834cdfe7e832f173a9f3931291bec1bcb05beb091c7d1defa54a115ff865b