Sep 14 13:27:29.989 INFO checking mackerel_client-0.2.0 against try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0 for pr-53578-1
Sep 14 13:27:29.989 INFO running: cargo +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets
Sep 14 13:27:29.990 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53578-1/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-0/try#87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0:/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 +87b8e7411c4f1267d0cac0d63fa9c21c943e2ea0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 13:27:30.156 INFO blam! 168c1a9ca3639dd8202677cceb9d0b3906c273689fe8ae2ab57797a3249d0b8e
Sep 14 13:27:30.157 INFO running `"docker" "start" "-a" "168c1a9ca3639dd8202677cceb9d0b3906c273689fe8ae2ab57797a3249d0b8e"`
Sep 14 13:27:31.026 INFO kablam! usermod: no changes
Sep 14 13:27:31.309 INFO kablam!     Checking mackerel_client v0.2.0 (file:///source)
Sep 14 13:27:33.458 INFO kablam! warning: unused `#[macro_use]` import
Sep 14 13:27:33.459 INFO kablam!   --> src/lib.rs:28:1
Sep 14 13:27:33.459 INFO kablam!    |
Sep 14 13:27:33.459 INFO kablam! 28 | #[macro_use]
Sep 14 13:27:33.459 INFO kablam!    | ^^^^^^^^^^^^
Sep 14 13:27:33.459 INFO kablam!    |
Sep 14 13:27:33.459 INFO kablam!    = note: #[warn(unused_imports)] on by default
Sep 14 13:27:33.459 INFO kablam! 
Sep 14 13:27:35.270 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.21s
Sep 14 13:27:35.271 INFO kablam! su: No module specific data is present
Sep 14 13:27:35.716 INFO running `"docker" "rm" "-f" "168c1a9ca3639dd8202677cceb9d0b3906c273689fe8ae2ab57797a3249d0b8e"`
Sep 14 13:27:35.773 INFO blam! 168c1a9ca3639dd8202677cceb9d0b3906c273689fe8ae2ab57797a3249d0b8e