Sep 04 02:15:04.328 INFO checking stacktrace-0.2.1 against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 04 02:15:04.328 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 04 02:15:04.328 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-0/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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=500" "-e" "CMD=cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 04 02:15:04.542 INFO blam! 5599a7718e9a505ebe1dc460bb2d07400bc6ee242210ca77876b43a1d22bb280
Sep 04 02:15:04.545 INFO running `"docker" "start" "-a" "5599a7718e9a505ebe1dc460bb2d07400bc6ee242210ca77876b43a1d22bb280"`
Sep 04 02:15:05.230 INFO kablam!     Checking stacktrace v0.2.1 (file:///source)
Sep 04 02:15:06.271 INFO kablam! warning: unused import: `std::fmt::Debug`
Sep 04 02:15:06.272 INFO kablam!  --> examples/using_result/main.rs:3:5
Sep 04 02:15:06.272 INFO kablam!   |
Sep 04 02:15:06.272 INFO kablam! 3 | use std::fmt::Debug;
Sep 04 02:15:06.272 INFO kablam!   |     ^^^^^^^^^^^^^^^
Sep 04 02:15:06.272 INFO kablam!   |
Sep 04 02:15:06.272 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 04 02:15:06.272 INFO kablam! 
Sep 04 02:15:06.424 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.22s
Sep 04 02:15:06.427 INFO kablam! su: No module specific data is present
Sep 04 02:15:06.761 INFO running `"docker" "rm" "-f" "5599a7718e9a505ebe1dc460bb2d07400bc6ee242210ca77876b43a1d22bb280"`
Sep 04 02:15:06.848 INFO blam! 5599a7718e9a505ebe1dc460bb2d07400bc6ee242210ca77876b43a1d22bb280