Aug 31 14:11:28.419 INFO checking serial-0.4.0 against try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b for pr-53578
Aug 31 14:11:28.419 INFO running: cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets
Aug 31 14:11:28.419 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53578/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-1/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/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=500" "-e" "CMD=cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 14:11:28.562 INFO blam! deb0802ce47b70862e52c4ac9d23536899a2fb5ad0418a891a1bf51cc29c28e2
Aug 31 14:11:28.564 INFO running `"docker" "start" "-a" "deb0802ce47b70862e52c4ac9d23536899a2fb5ad0418a891a1bf51cc29c28e2"`
Aug 31 14:11:29.527 INFO kablam!     Checking serial v0.4.0 (file:///source)
Aug 31 14:11:30.585 INFO kablam! warning: unused import: `std::io::prelude`
Aug 31 14:11:30.585 INFO kablam!  --> examples/read_write.rs:6:5
Aug 31 14:11:30.585 INFO kablam!   |
Aug 31 14:11:30.585 INFO kablam! 6 | use std::io::prelude::*;
Aug 31 14:11:30.585 INFO kablam!   |     ^^^^^^^^^^^^^^^^
Aug 31 14:11:30.585 INFO kablam!   |
Aug 31 14:11:30.585 INFO kablam!   = note: #[warn(unused_imports)] on by default
Aug 31 14:11:30.585 INFO kablam! 
Aug 31 14:11:30.642 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
Aug 31 14:11:30.645 INFO kablam! su: No module specific data is present
Aug 31 14:11:31.006 INFO running `"docker" "rm" "-f" "deb0802ce47b70862e52c4ac9d23536899a2fb5ad0418a891a1bf51cc29c28e2"`
Aug 31 14:11:31.111 INFO blam! deb0802ce47b70862e52c4ac9d23536899a2fb5ad0418a891a1bf51cc29c28e2