Sep 19 22:09:55.239 INFO checking rbtree-0.1.5 against master#1e21c9a297a9fe668d62887a3a6a4add8e717b17 for pr-54352
Sep 19 22:09:55.239 INFO running: cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets
Sep 19 22:09:55.239 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54352/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-1/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/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 +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 22:09:55.382 INFO blam! 7ff38e82378b4702785ed4d91019df682b894b951e3a0cc2b4638be81b88dd0a
Sep 19 22:09:55.387 INFO running `"docker" "start" "-a" "7ff38e82378b4702785ed4d91019df682b894b951e3a0cc2b4638be81b88dd0a"`
Sep 19 22:09:55.998 INFO kablam! usermod: no changes
Sep 19 22:09:56.032 INFO kablam!     Checking rbtree v0.1.5 (/source)
Sep 19 22:09:56.235 INFO kablam! warning: unused import: `super::RBTree`
Sep 19 22:09:56.235 INFO kablam!     --> src/lib.rs:1404:9
Sep 19 22:09:56.235 INFO kablam!      |
Sep 19 22:09:56.235 INFO kablam! 1404 |     use super::RBTree;
Sep 19 22:09:56.235 INFO kablam!      |         ^^^^^^^^^^^^^
Sep 19 22:09:56.235 INFO kablam!      |
Sep 19 22:09:56.235 INFO kablam!      = note: #[warn(unused_imports)] on by default
Sep 19 22:09:56.235 INFO kablam! 
Sep 19 22:09:56.899 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
Sep 19 22:09:56.906 INFO kablam! su: No module specific data is present
Sep 19 22:09:57.525 INFO running `"docker" "rm" "-f" "7ff38e82378b4702785ed4d91019df682b894b951e3a0cc2b4638be81b88dd0a"`
Sep 19 22:09:57.608 INFO blam! 7ff38e82378b4702785ed4d91019df682b894b951e3a0cc2b4638be81b88dd0a