Sep 14 07:38:50.114 INFO checking tk-bufstream-0.3.0 against master#90d36fb5905bbe5004f5b465ea14b53d10dae260 for pr-53578-1
Sep 14 07:38:50.114 INFO running: cargo +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets
Sep 14 07:38:50.114 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-53578-1/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-4/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/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 +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 07:38:50.291 INFO blam! 24427785167c4d534767b2ac38bbf2308d88ea91c872bf1cf11a84f270408ed2
Sep 14 07:38:50.296 INFO running `"docker" "start" "-a" "24427785167c4d534767b2ac38bbf2308d88ea91c872bf1cf11a84f270408ed2"`
Sep 14 07:38:51.743 INFO kablam! usermod: no changes
Sep 14 07:38:51.887 INFO kablam!     Checking tk-bufstream v0.3.0 (file:///source)
Sep 14 07:38:53.756 INFO kablam! warning: unused import: `std::str`
Sep 14 07:38:53.756 INFO kablam!  --> examples/raw_echo.rs:8:5
Sep 14 07:38:53.756 INFO kablam!   |
Sep 14 07:38:53.756 INFO kablam! 8 | use std::str;
Sep 14 07:38:53.756 INFO kablam!   |     ^^^^^^^^
Sep 14 07:38:53.756 INFO kablam!   |
Sep 14 07:38:53.756 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 14 07:38:53.756 INFO kablam! 
Sep 14 07:38:53.986 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.21s
Sep 14 07:38:53.987 INFO kablam! su: No module specific data is present
Sep 14 07:38:54.483 INFO running `"docker" "rm" "-f" "24427785167c4d534767b2ac38bbf2308d88ea91c872bf1cf11a84f270408ed2"`
Sep 14 07:38:54.598 INFO blam! 24427785167c4d534767b2ac38bbf2308d88ea91c872bf1cf11a84f270408ed2