Sep 10 09:15:50.574 INFO checking stacktrace-0.2.1 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 09:15:50.574 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 09:15:50.574 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-1/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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 +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 09:15:50.713 INFO blam! 83230a19eda1d0a22072ac002aad9296a8c3edada33a19f26758ecf10b167365
Sep 10 09:15:50.714 INFO running `"docker" "start" "-a" "83230a19eda1d0a22072ac002aad9296a8c3edada33a19f26758ecf10b167365"`
Sep 10 09:15:51.610 INFO kablam! usermod: no changes
Sep 10 09:15:51.706 INFO kablam!     Checking stacktrace v0.2.1 (file:///source)
Sep 10 09:15:52.466 INFO kablam! warning: unused import: `std::fmt::Debug`
Sep 10 09:15:52.466 INFO kablam!  --> examples/using_result/main.rs:3:5
Sep 10 09:15:52.466 INFO kablam!   |
Sep 10 09:15:52.466 INFO kablam! 3 | use std::fmt::Debug;
Sep 10 09:15:52.466 INFO kablam!   |     ^^^^^^^^^^^^^^^
Sep 10 09:15:52.466 INFO kablam!   |
Sep 10 09:15:52.466 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 10 09:15:52.466 INFO kablam! 
Sep 10 09:15:52.558 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
Sep 10 09:15:52.562 INFO kablam! su: No module specific data is present
Sep 10 09:15:53.257 INFO running `"docker" "rm" "-f" "83230a19eda1d0a22072ac002aad9296a8c3edada33a19f26758ecf10b167365"`
Sep 10 09:15:53.381 INFO blam! 83230a19eda1d0a22072ac002aad9296a8c3edada33a19f26758ecf10b167365