Sep 10 14:56:52.649 INFO checking mackerel_client-0.2.0 against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 14:56:52.649 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 14:56:52.649 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 14:56:52.863 INFO blam! 31425e0819666fe872b7f001d39e563d05a0e04e02aae9e9bd4b77b58f3d74d2
Sep 10 14:56:52.866 INFO running `"docker" "start" "-a" "31425e0819666fe872b7f001d39e563d05a0e04e02aae9e9bd4b77b58f3d74d2"`
Sep 10 14:56:54.102 INFO kablam! usermod: no changes
Sep 10 14:56:54.395 INFO kablam!     Checking mackerel_client v0.2.0 (file:///source)
Sep 10 14:56:57.144 INFO kablam! warning: unused `#[macro_use]` import
Sep 10 14:56:57.144 INFO kablam!   --> src/lib.rs:28:1
Sep 10 14:56:57.144 INFO kablam!    |
Sep 10 14:56:57.144 INFO kablam! 28 | #[macro_use]
Sep 10 14:56:57.144 INFO kablam!    | ^^^^^^^^^^^^
Sep 10 14:56:57.144 INFO kablam!    |
Sep 10 14:56:57.144 INFO kablam!    = note: #[warn(unused_imports)] on by default
Sep 10 14:56:57.144 INFO kablam! 
Sep 10 14:56:59.916 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.79s
Sep 10 14:56:59.930 INFO kablam! su: No module specific data is present
Sep 10 14:57:00.644 INFO running `"docker" "rm" "-f" "31425e0819666fe872b7f001d39e563d05a0e04e02aae9e9bd4b77b58f3d74d2"`
Sep 10 14:57:00.759 INFO blam! 31425e0819666fe872b7f001d39e563d05a0e04e02aae9e9bd4b77b58f3d74d2