Sep 19 23:50:20.649 INFO checking immutable-0.1.1 against master#ff6422d7a392acfc8af28994d65af2bbaecea4f6 for pr-54346
Sep 19 23:50:20.649 INFO running: cargo +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets
Sep 19 23:50:20.649 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-54346/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-4/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/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 +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 23:50:20.888 INFO blam! 003af9e0de0167de6f4636388ca70df79b663dc6a870ee5e17a650f622f48c6b
Sep 19 23:50:20.890 INFO running `"docker" "start" "-a" "003af9e0de0167de6f4636388ca70df79b663dc6a870ee5e17a650f622f48c6b"`
Sep 19 23:50:21.395 INFO kablam! usermod: no changes
Sep 19 23:50:21.471 INFO kablam!     Checking immutable v0.1.1 (/source)
Sep 19 23:50:21.741 INFO kablam! warning: unused import: `std::vec::IntoIter`
Sep 19 23:50:21.741 INFO kablam!  --> src/list.rs:7:5
Sep 19 23:50:21.741 INFO kablam!   |
Sep 19 23:50:21.741 INFO kablam! 7 | use std::vec::IntoIter;
Sep 19 23:50:21.741 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Sep 19 23:50:21.741 INFO kablam!   |
Sep 19 23:50:21.741 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 19 23:50:21.741 INFO kablam! 
Sep 19 23:50:21.806 INFO kablam! warning: unused import: `std::vec::IntoIter`
Sep 19 23:50:21.806 INFO kablam!  --> src/list.rs:7:5
Sep 19 23:50:21.806 INFO kablam!   |
Sep 19 23:50:21.806 INFO kablam! 7 | use std::vec::IntoIter;
Sep 19 23:50:21.806 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Sep 19 23:50:21.806 INFO kablam!   |
Sep 19 23:50:21.806 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 19 23:50:21.806 INFO kablam! 
Sep 19 23:50:21.954 INFO kablam! warning: unused attribute
Sep 19 23:50:21.954 INFO kablam!  --> src/list.rs:9:1
Sep 19 23:50:21.954 INFO kablam!   |
Sep 19 23:50:21.954 INFO kablam! 9 | #[macro_escape]
Sep 19 23:50:21.954 INFO kablam!   | ^^^^^^^^^^^^^^^
Sep 19 23:50:21.954 INFO kablam!   |
Sep 19 23:50:21.954 INFO kablam!   = note: #[warn(unused_attributes)] on by default
Sep 19 23:50:21.954 INFO kablam! 
Sep 19 23:50:21.954 INFO kablam! warning: unused attribute
Sep 19 23:50:21.954 INFO kablam!   --> src/tree/binary_tree.rs:11:1
Sep 19 23:50:21.954 INFO kablam!    |
Sep 19 23:50:21.954 INFO kablam! 11 | #[macro_escape]
Sep 19 23:50:21.954 INFO kablam!    | ^^^^^^^^^^^^^^^
Sep 19 23:50:21.954 INFO kablam! 
Sep 19 23:50:22.124 INFO kablam! warning: unused attribute
Sep 19 23:50:22.124 INFO kablam!  --> src/list.rs:9:1
Sep 19 23:50:22.124 INFO kablam!   |
Sep 19 23:50:22.124 INFO kablam! 9 | #[macro_escape]
Sep 19 23:50:22.124 INFO kablam!   | ^^^^^^^^^^^^^^^
Sep 19 23:50:22.124 INFO kablam! 
Sep 19 23:50:22.124 INFO kablam! warning: unused attribute
Sep 19 23:50:22.124 INFO kablam!   --> src/tree/binary_tree.rs:11:1
Sep 19 23:50:22.124 INFO kablam!    |
Sep 19 23:50:22.124 INFO kablam! 11 | #[macro_escape]
Sep 19 23:50:22.124 INFO kablam!    | ^^^^^^^^^^^^^^^
Sep 19 23:50:22.124 INFO kablam! 
Sep 19 23:50:22.141 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
Sep 19 23:50:22.143 INFO kablam! su: No module specific data is present
Sep 19 23:50:23.043 INFO running `"docker" "rm" "-f" "003af9e0de0167de6f4636388ca70df79b663dc6a870ee5e17a650f622f48c6b"`
Sep 19 23:50:23.234 INFO blam! 003af9e0de0167de6f4636388ca70df79b663dc6a870ee5e17a650f622f48c6b