Oct 13 13:26:50.542 INFO checking immutable-0.1.1 against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 13 13:26:50.543 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-7/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-7/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/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 +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-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 13:26:50.749 INFO blam! 1426f25a39ad3e9b5e66183b81af23a5cbf196c98b52cc0557c7a1988bd69ae5
Oct 13 13:26:50.750 INFO running `"docker" "start" "-a" "1426f25a39ad3e9b5e66183b81af23a5cbf196c98b52cc0557c7a1988bd69ae5"`
Oct 13 13:26:51.907 INFO kablam! usermod: no changes
Oct 13 13:26:51.957 INFO kablam!     Checking immutable v0.1.1 (/source)
Oct 13 13:26:52.841 INFO kablam! warning: unused import: `std::vec::IntoIter`
Oct 13 13:26:52.842 INFO kablam!  --> src/list.rs:7:5
Oct 13 13:26:52.843 INFO kablam!   |
Oct 13 13:26:52.844 INFO kablam! 7 | use std::vec::IntoIter;
Oct 13 13:26:52.844 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Oct 13 13:26:52.845 INFO kablam!   |
Oct 13 13:26:52.846 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 13 13:26:52.847 INFO kablam! 
Oct 13 13:26:53.037 INFO kablam! warning: unused attribute
Oct 13 13:26:53.037 INFO kablam!  --> src/list.rs:9:1
Oct 13 13:26:53.038 INFO kablam!   |
Oct 13 13:26:53.039 INFO kablam! 9 | #[macro_escape]
Oct 13 13:26:53.039 INFO kablam!   | ^^^^^^^^^^^^^^^
Oct 13 13:26:53.040 INFO kablam!   |
Oct 13 13:26:53.041 INFO kablam!   = note: #[warn(unused_attributes)] on by default
Oct 13 13:26:53.041 INFO kablam! 
Oct 13 13:26:53.042 INFO kablam! warning: unused attribute
Oct 13 13:26:53.043 INFO kablam!   --> src/tree/binary_tree.rs:11:1
Oct 13 13:26:53.043 INFO kablam!    |
Oct 13 13:26:53.044 INFO kablam! 11 | #[macro_escape]
Oct 13 13:26:53.045 INFO kablam!    | ^^^^^^^^^^^^^^^
Oct 13 13:26:53.045 INFO kablam! 
Oct 13 13:26:53.153 INFO kablam! warning: unused import: `std::vec::IntoIter`
Oct 13 13:26:53.154 INFO kablam!  --> src/list.rs:7:5
Oct 13 13:26:53.155 INFO kablam!   |
Oct 13 13:26:53.155 INFO kablam! 7 | use std::vec::IntoIter;
Oct 13 13:26:53.156 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Oct 13 13:26:53.157 INFO kablam!   |
Oct 13 13:26:53.157 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 13 13:26:53.158 INFO kablam! 
Oct 13 13:26:53.472 INFO kablam! warning: unused attribute
Oct 13 13:26:53.472 INFO kablam!  --> src/list.rs:9:1
Oct 13 13:26:53.472 INFO kablam!   |
Oct 13 13:26:53.472 INFO kablam! 9 | #[macro_escape]
Oct 13 13:26:53.472 INFO kablam!   | ^^^^^^^^^^^^^^^
Oct 13 13:26:53.472 INFO kablam!   |
Oct 13 13:26:53.472 INFO kablam!   = note: #[warn(unused_attributes)] on by default
Oct 13 13:26:53.472 INFO kablam! 
Oct 13 13:26:53.472 INFO kablam! warning: unused attribute
Oct 13 13:26:53.472 INFO kablam!   --> src/tree/binary_tree.rs:11:1
Oct 13 13:26:53.472 INFO kablam!    |
Oct 13 13:26:53.472 INFO kablam! 11 | #[macro_escape]
Oct 13 13:26:53.472 INFO kablam!    | ^^^^^^^^^^^^^^^
Oct 13 13:26:53.472 INFO kablam! 
Oct 13 13:26:53.490 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.55s
Oct 13 13:26:53.492 INFO kablam! su: No module specific data is present
Oct 13 13:26:53.819 INFO running `"docker" "rm" "-f" "1426f25a39ad3e9b5e66183b81af23a5cbf196c98b52cc0557c7a1988bd69ae5"`
Oct 13 13:26:53.984 INFO blam! 1426f25a39ad3e9b5e66183b81af23a5cbf196c98b52cc0557c7a1988bd69ae5