Oct 27 17:27:17.786 INFO checking rbtree-0.1.5 against master#155510e377ae2a8d8ee0dad1a5f809c9062a5526 for pr-55192-2
Oct 27 17:27:17.787 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192-2/worker-7/master#155510e377ae2a8d8ee0dad1a5f809c9062a5526:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-7/pr-55192-2/master#155510e377ae2a8d8ee0dad1a5f809c9062a5526:/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 +155510e377ae2a8d8ee0dad1a5f809c9062a5526-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 27 17:27:17.971 INFO blam! bd88e70d3f96235d7ca696b224560c39fc1074408bb244e6a9101acecea088ad
Oct 27 17:27:17.975 INFO running `"docker" "start" "-a" "bd88e70d3f96235d7ca696b224560c39fc1074408bb244e6a9101acecea088ad"`
Oct 27 17:27:19.302 INFO kablam! usermod: no changes
Oct 27 17:27:19.354 INFO kablam!     Checking rbtree v0.1.5 (/source)
Oct 27 17:27:20.430 INFO kablam! warning: unused import: `super::RBTree`
Oct 27 17:27:20.430 INFO kablam!     --> src/lib.rs:1404:9
Oct 27 17:27:20.430 INFO kablam!      |
Oct 27 17:27:20.430 INFO kablam! 1404 |     use super::RBTree;
Oct 27 17:27:20.430 INFO kablam!      |         ^^^^^^^^^^^^^
Oct 27 17:27:20.430 INFO kablam!      |
Oct 27 17:27:20.430 INFO kablam!      = note: #[warn(unused_imports)] on by default
Oct 27 17:27:20.430 INFO kablam! 
Oct 27 17:27:21.650 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.31s
Oct 27 17:27:21.650 INFO kablam! su: No module specific data is present
Oct 27 17:27:21.955 INFO running `"docker" "rm" "-f" "bd88e70d3f96235d7ca696b224560c39fc1074408bb244e6a9101acecea088ad"`
Oct 27 17:27:22.068 INFO blam! bd88e70d3f96235d7ca696b224560c39fc1074408bb244e6a9101acecea088ad