Sep 21 02:34:42.489 INFO checking stacktrace-0.2.1 against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 21 02:34:42.489 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 21 02:34:42.489 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-3/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/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 +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 02:34:42.688 INFO blam! c1558b1cd31791a382e5d990a81100adea652c45b80694fd0bc8b4d2f17f7f9f
Sep 21 02:34:42.690 INFO running `"docker" "start" "-a" "c1558b1cd31791a382e5d990a81100adea652c45b80694fd0bc8b4d2f17f7f9f"`
Sep 21 02:34:43.728 INFO kablam! usermod: no changes
Sep 21 02:34:43.797 INFO kablam!     Checking stacktrace v0.2.1 (/source)
Sep 21 02:34:44.298 INFO kablam! warning: unused import: `std::fmt::Debug`
Sep 21 02:34:44.298 INFO kablam!  --> examples/using_result/main.rs:3:5
Sep 21 02:34:44.298 INFO kablam!   |
Sep 21 02:34:44.298 INFO kablam! 3 | use std::fmt::Debug;
Sep 21 02:34:44.298 INFO kablam!   |     ^^^^^^^^^^^^^^^
Sep 21 02:34:44.298 INFO kablam!   |
Sep 21 02:34:44.298 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 21 02:34:44.298 INFO kablam! 
Sep 21 02:34:44.383 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
Sep 21 02:34:44.388 INFO kablam! su: No module specific data is present
Sep 21 02:34:44.858 INFO running `"docker" "rm" "-f" "c1558b1cd31791a382e5d990a81100adea652c45b80694fd0bc8b4d2f17f7f9f"`
Sep 21 02:34:44.929 INFO blam! c1558b1cd31791a382e5d990a81100adea652c45b80694fd0bc8b4d2f17f7f9f