Oct 12 12:28:06.766 INFO checking teozkr/rsbf against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 12:28:06.766 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-6/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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 12 12:28:07.169 INFO blam! defea6254e6982ee8af6d488bf09dddb9ff5a3d05d6d950ae6e285109e012a87
Oct 12 12:28:07.174 INFO running `"docker" "start" "-a" "defea6254e6982ee8af6d488bf09dddb9ff5a3d05d6d950ae6e285109e012a87"`
Oct 12 12:28:07.721 INFO kablam! usermod: no changes
Oct 12 12:28:07.764 INFO kablam!     Checking rsbf v0.1.0 (/source)
Oct 12 12:28:08.004 INFO kablam! warning: unused import: `std::io`
Oct 12 12:28:08.004 INFO kablam!    --> src/bf/interp.rs:116:13
Oct 12 12:28:08.004 INFO kablam!     |
Oct 12 12:28:08.004 INFO kablam! 116 |         use std::io;
Oct 12 12:28:08.004 INFO kablam!     |             ^^^^^^^
Oct 12 12:28:08.004 INFO kablam!     |
Oct 12 12:28:08.004 INFO kablam!     = note: #[warn(unused_imports)] on by default
Oct 12 12:28:08.004 INFO kablam! 
Oct 12 12:28:08.539 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
Oct 12 12:28:08.539 INFO kablam! su: No module specific data is present
Oct 12 12:28:09.120 INFO running `"docker" "rm" "-f" "defea6254e6982ee8af6d488bf09dddb9ff5a3d05d6d950ae6e285109e012a87"`
Oct 12 12:28:09.329 INFO blam! defea6254e6982ee8af6d488bf09dddb9ff5a3d05d6d950ae6e285109e012a87