Aug 31 14:11:30.617 INFO checking serial-0.4.0 against master#d0d81b7fc1421859ba0218e8a437af29ae3b0967 for pr-53578
Aug 31 14:11:30.617 INFO running: cargo +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets
Aug 31 14:11:30.617 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53578/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-3/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/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 +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 14:11:30.785 INFO blam! b3f4e0aefa814ce8022dfc242a49a3eea52d286a6055ca0ea3941e70ffe6d3af
Aug 31 14:11:30.787 INFO running `"docker" "start" "-a" "b3f4e0aefa814ce8022dfc242a49a3eea52d286a6055ca0ea3941e70ffe6d3af"`
Aug 31 14:11:31.408 INFO kablam!     Checking serial v0.4.0 (file:///source)
Aug 31 14:11:32.478 INFO kablam! warning: unused import: `std::io::prelude`
Aug 31 14:11:32.478 INFO kablam!  --> examples/read_write.rs:6:5
Aug 31 14:11:32.478 INFO kablam!   |
Aug 31 14:11:32.478 INFO kablam! 6 | use std::io::prelude::*;
Aug 31 14:11:32.478 INFO kablam!   |     ^^^^^^^^^^^^^^^^
Aug 31 14:11:32.478 INFO kablam!   |
Aug 31 14:11:32.478 INFO kablam!   = note: #[warn(unused_imports)] on by default
Aug 31 14:11:32.478 INFO kablam! 
Aug 31 14:11:32.528 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
Aug 31 14:11:32.532 INFO kablam! su: No module specific data is present
Aug 31 14:11:33.083 INFO running `"docker" "rm" "-f" "b3f4e0aefa814ce8022dfc242a49a3eea52d286a6055ca0ea3941e70ffe6d3af"`
Aug 31 14:11:33.248 INFO blam! b3f4e0aefa814ce8022dfc242a49a3eea52d286a6055ca0ea3941e70ffe6d3af