Sep 19 20:16:17.215 INFO checking rbtree-0.1.5 against try#fcacde07b66fe513e52c41b73aef91bcc121905b for pr-54346
Sep 19 20:16:17.215 INFO running: cargo +fcacde07b66fe513e52c41b73aef91bcc121905b-alt check --frozen --all --all-targets
Sep 19 20:16:17.215 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54346/try#fcacde07b66fe513e52c41b73aef91bcc121905b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-3/try#fcacde07b66fe513e52c41b73aef91bcc121905b:/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 +fcacde07b66fe513e52c41b73aef91bcc121905b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 20:16:17.406 INFO blam! e6f56ebc5943b668ebab6f0312ea74f55b4be2f1c1bd0487432fae568665c57c
Sep 19 20:16:17.408 INFO running `"docker" "start" "-a" "e6f56ebc5943b668ebab6f0312ea74f55b4be2f1c1bd0487432fae568665c57c"`
Sep 19 20:16:18.339 INFO kablam! usermod: no changes
Sep 19 20:16:18.363 INFO kablam!     Checking rbtree v0.1.5 (/source)
Sep 19 20:16:18.550 INFO kablam! warning: unused import: `super::RBTree`
Sep 19 20:16:18.550 INFO kablam!     --> src/lib.rs:1404:9
Sep 19 20:16:18.550 INFO kablam!      |
Sep 19 20:16:18.550 INFO kablam! 1404 |     use super::RBTree;
Sep 19 20:16:18.550 INFO kablam!      |         ^^^^^^^^^^^^^
Sep 19 20:16:18.550 INFO kablam!      |
Sep 19 20:16:18.550 INFO kablam!      = note: #[warn(unused_imports)] on by default
Sep 19 20:16:18.550 INFO kablam! 
Sep 19 20:16:19.495 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
Sep 19 20:16:19.495 INFO kablam! su: No module specific data is present
Sep 19 20:16:20.214 INFO running `"docker" "rm" "-f" "e6f56ebc5943b668ebab6f0312ea74f55b4be2f1c1bd0487432fae568665c57c"`
Sep 19 20:16:20.318 INFO blam! e6f56ebc5943b668ebab6f0312ea74f55b4be2f1c1bd0487432fae568665c57c