Nov 05 01:32:55.647 INFO checking circular-0.2.0 against master#2ad8c7b3502616aff142a4640cce911c6c2c5463 for pr-55655
Nov 05 01:32:55.647 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-4/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55655/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/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 +2ad8c7b3502616aff142a4640cce911c6c2c5463-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"`
Nov 05 01:32:55.992 INFO blam! 12521dd71c6e5a5711bdd257a8461dde4f938b3e53a9968f5716d05e1de74f15
Nov 05 01:32:56.003 INFO running `"docker" "start" "-a" "12521dd71c6e5a5711bdd257a8461dde4f938b3e53a9968f5716d05e1de74f15"`
Nov 05 01:32:57.167 INFO kablam! usermod: no changes
Nov 05 01:32:57.249 INFO kablam!     Checking circular v0.2.0 (/source)
Nov 05 01:32:58.732 INFO kablam! warning: unused import: `std::str`
Nov 05 01:32:58.732 INFO kablam!    --> src/lib.rs:387:7
Nov 05 01:32:58.732 INFO kablam!     |
Nov 05 01:32:58.732 INFO kablam! 387 |   use std::str;
Nov 05 01:32:58.732 INFO kablam!     |       ^^^^^^^^
Nov 05 01:32:58.732 INFO kablam!     |
Nov 05 01:32:58.732 INFO kablam!     = note: #[warn(unused_imports)] on by default
Nov 05 01:32:58.732 INFO kablam! 
Nov 05 01:32:59.107 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.92s
Nov 05 01:32:59.117 INFO kablam! su: No module specific data is present
Nov 05 01:33:00.327 INFO running `"docker" "rm" "-f" "12521dd71c6e5a5711bdd257a8461dde4f938b3e53a9968f5716d05e1de74f15"`
Nov 05 01:33:00.585 INFO blam! 12521dd71c6e5a5711bdd257a8461dde4f938b3e53a9968f5716d05e1de74f15