Sep 21 02:34:42.539 INFO checking stacktrace-0.2.1 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 02:34:42.539 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 02:34:42.539 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-0/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 02:34:42.756 INFO blam! b7e5fef0913eaff0f936f19b92220c0247278451fa6e8e012fac3ccecd5bbb2f
Sep 21 02:34:42.767 INFO running `"docker" "start" "-a" "b7e5fef0913eaff0f936f19b92220c0247278451fa6e8e012fac3ccecd5bbb2f"`
Sep 21 02:34:43.814 INFO kablam! usermod: no changes
Sep 21 02:34:43.872 INFO kablam!     Checking stacktrace v0.2.1 (/source)
Sep 21 02:34:44.450 INFO kablam! warning: unused import: `std::fmt::Debug`
Sep 21 02:34:44.450 INFO kablam!  --> examples/using_result/main.rs:3:5
Sep 21 02:34:44.450 INFO kablam!   |
Sep 21 02:34:44.450 INFO kablam! 3 | use std::fmt::Debug;
Sep 21 02:34:44.450 INFO kablam!   |     ^^^^^^^^^^^^^^^
Sep 21 02:34:44.450 INFO kablam!   |
Sep 21 02:34:44.450 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 21 02:34:44.450 INFO kablam! 
Sep 21 02:34:44.531 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Sep 21 02:34:44.541 INFO kablam! su: No module specific data is present
Sep 21 02:34:45.064 INFO running `"docker" "rm" "-f" "b7e5fef0913eaff0f936f19b92220c0247278451fa6e8e012fac3ccecd5bbb2f"`
Sep 21 02:34:45.163 INFO blam! b7e5fef0913eaff0f936f19b92220c0247278451fa6e8e012fac3ccecd5bbb2f