Sep 10 16:29:25.488 INFO checking immutable-0.1.1 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 16:29:25.488 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 16:29:25.488 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-2/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 16:29:25.656 INFO blam! d5ec32745f1ca6dde59879bbf26bc77710db499d963fa71f4ec8938b25e4e766
Sep 10 16:29:25.657 INFO running `"docker" "start" "-a" "d5ec32745f1ca6dde59879bbf26bc77710db499d963fa71f4ec8938b25e4e766"`
Sep 10 16:29:26.541 INFO kablam! usermod: no changes
Sep 10 16:29:26.594 INFO kablam!     Checking immutable v0.1.1 (file:///source)
Sep 10 16:29:27.182 INFO kablam! warning: unused import: `std::vec::IntoIter`
Sep 10 16:29:27.182 INFO kablam!  --> src/list.rs:7:5
Sep 10 16:29:27.182 INFO kablam!   |
Sep 10 16:29:27.182 INFO kablam! 7 | use std::vec::IntoIter;
Sep 10 16:29:27.182 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Sep 10 16:29:27.182 INFO kablam!   |
Sep 10 16:29:27.182 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 10 16:29:27.182 INFO kablam! 
Sep 10 16:29:27.298 INFO kablam! warning: unused import: `std::vec::IntoIter`
Sep 10 16:29:27.298 INFO kablam!  --> src/list.rs:7:5
Sep 10 16:29:27.298 INFO kablam!   |
Sep 10 16:29:27.298 INFO kablam! 7 | use std::vec::IntoIter;
Sep 10 16:29:27.298 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^
Sep 10 16:29:27.298 INFO kablam!   |
Sep 10 16:29:27.298 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 10 16:29:27.298 INFO kablam! 
Sep 10 16:29:27.463 INFO kablam! warning: unused attribute
Sep 10 16:29:27.463 INFO kablam!  --> src/list.rs:9:1
Sep 10 16:29:27.463 INFO kablam!   |
Sep 10 16:29:27.463 INFO kablam! 9 | #[macro_escape]
Sep 10 16:29:27.463 INFO kablam!   | ^^^^^^^^^^^^^^^
Sep 10 16:29:27.463 INFO kablam!   |
Sep 10 16:29:27.463 INFO kablam!   = note: #[warn(unused_attributes)] on by default
Sep 10 16:29:27.463 INFO kablam! 
Sep 10 16:29:27.463 INFO kablam! warning: unused attribute
Sep 10 16:29:27.463 INFO kablam!   --> src/tree/binary_tree.rs:11:1
Sep 10 16:29:27.463 INFO kablam!    |
Sep 10 16:29:27.463 INFO kablam! 11 | #[macro_escape]
Sep 10 16:29:27.463 INFO kablam!    | ^^^^^^^^^^^^^^^
Sep 10 16:29:27.463 INFO kablam! 
Sep 10 16:29:27.679 INFO kablam! warning: unused attribute
Sep 10 16:29:27.680 INFO kablam!  --> src/list.rs:9:1
Sep 10 16:29:27.680 INFO kablam!   |
Sep 10 16:29:27.680 INFO kablam! 9 | #[macro_escape]
Sep 10 16:29:27.680 INFO kablam!   | ^^^^^^^^^^^^^^^
Sep 10 16:29:27.680 INFO kablam!   |
Sep 10 16:29:27.680 INFO kablam!   = note: #[warn(unused_attributes)] on by default
Sep 10 16:29:27.680 INFO kablam! 
Sep 10 16:29:27.680 INFO kablam! warning: unused attribute
Sep 10 16:29:27.680 INFO kablam!   --> src/tree/binary_tree.rs:11:1
Sep 10 16:29:27.680 INFO kablam!    |
Sep 10 16:29:27.680 INFO kablam! 11 | #[macro_escape]
Sep 10 16:29:27.680 INFO kablam!    | ^^^^^^^^^^^^^^^
Sep 10 16:29:27.680 INFO kablam! 
Sep 10 16:29:27.695 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
Sep 10 16:29:27.697 INFO kablam! su: No module specific data is present
Sep 10 16:29:28.374 INFO running `"docker" "rm" "-f" "d5ec32745f1ca6dde59879bbf26bc77710db499d963fa71f4ec8938b25e4e766"`
Sep 10 16:29:28.472 INFO blam! d5ec32745f1ca6dde59879bbf26bc77710db499d963fa71f4ec8938b25e4e766