Nov 01 15:42:45.693 INFO checking stacktrace-0.2.1 against master#05812fa8c588473f03e3fa7cf59cd84f4f37c715 for pr-55538
Nov 01 15:42:45.694 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-1/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55538/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/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 +05812fa8c588473f03e3fa7cf59cd84f4f37c715-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 01 15:42:46.168 INFO blam! 39fd43e7fec7642e566121cc5535241014840485232f73c0ee713e3dad0b31f5
Nov 01 15:42:46.192 INFO running `"docker" "start" "-a" "39fd43e7fec7642e566121cc5535241014840485232f73c0ee713e3dad0b31f5"`
Nov 01 15:42:47.508 INFO kablam! usermod: no changes
Nov 01 15:42:47.662 INFO kablam!     Checking stacktrace v0.2.1 (/source)
Nov 01 15:42:51.304 INFO kablam! warning: unused import: `std::fmt::Debug`
Nov 01 15:42:51.304 INFO kablam!  --> examples/using_result/main.rs:3:5
Nov 01 15:42:51.304 INFO kablam!   |
Nov 01 15:42:51.304 INFO kablam! 3 | use std::fmt::Debug;
Nov 01 15:42:51.304 INFO kablam!   |     ^^^^^^^^^^^^^^^
Nov 01 15:42:51.304 INFO kablam!   |
Nov 01 15:42:51.304 INFO kablam!   = note: #[warn(unused_imports)] on by default
Nov 01 15:42:51.304 INFO kablam! 
Nov 01 15:42:51.428 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 3.88s
Nov 01 15:42:51.441 INFO kablam! su: No module specific data is present
Nov 01 15:42:52.462 INFO running `"docker" "rm" "-f" "39fd43e7fec7642e566121cc5535241014840485232f73c0ee713e3dad0b31f5"`
Nov 01 15:42:52.800 INFO blam! 39fd43e7fec7642e566121cc5535241014840485232f73c0ee713e3dad0b31f5