Sep 19 19:44:12.290 INFO checking stacktrace-0.2.1 against master#1e21c9a297a9fe668d62887a3a6a4add8e717b17 for pr-54352
Sep 19 19:44:12.290 INFO running: cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets
Sep 19 19:44:12.290 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54352/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-0/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/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=1000" "-e" "CMD=cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 19:44:12.551 INFO blam! 9f06a75dc3e05f98e39db86e857528684aec08d6761882de86c346b900276c0a
Sep 19 19:44:12.553 INFO running `"docker" "start" "-a" "9f06a75dc3e05f98e39db86e857528684aec08d6761882de86c346b900276c0a"`
Sep 19 19:44:13.430 INFO kablam! usermod: no changes
Sep 19 19:44:13.490 INFO kablam!     Checking stacktrace v0.2.1 (/source)
Sep 19 19:44:14.122 INFO kablam! warning: unused import: `std::fmt::Debug`
Sep 19 19:44:14.122 INFO kablam!  --> examples/using_result/main.rs:3:5
Sep 19 19:44:14.122 INFO kablam!   |
Sep 19 19:44:14.122 INFO kablam! 3 | use std::fmt::Debug;
Sep 19 19:44:14.122 INFO kablam!   |     ^^^^^^^^^^^^^^^
Sep 19 19:44:14.122 INFO kablam!   |
Sep 19 19:44:14.122 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 19 19:44:14.122 INFO kablam! 
Sep 19 19:44:14.227 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
Sep 19 19:44:14.227 INFO kablam! su: No module specific data is present
Sep 19 19:44:14.881 INFO running `"docker" "rm" "-f" "9f06a75dc3e05f98e39db86e857528684aec08d6761882de86c346b900276c0a"`
Sep 19 19:44:14.995 INFO blam! 9f06a75dc3e05f98e39db86e857528684aec08d6761882de86c346b900276c0a