Oct 12 14:56:50.408 INFO checking robbystk/rust-by-the-book against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 12 14:56:50.408 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-6/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 12 14:56:50.859 INFO blam! bffdee6daa38b5cde9752642ec43bfe9c3325bbce306485053e43cb68a7953fc
Oct 12 14:56:50.862 INFO running `"docker" "start" "-a" "bffdee6daa38b5cde9752642ec43bfe9c3325bbce306485053e43cb68a7953fc"`
Oct 12 14:56:51.750 INFO kablam! usermod: no changes
Oct 12 14:56:51.779 INFO kablam!     Checking errors v0.1.0 (/source)
Oct 12 14:56:52.234 INFO kablam! warning: unused variable: `f`
Oct 12 14:56:52.235 INFO kablam!  --> src/main.rs:4:9
Oct 12 14:56:52.235 INFO kablam!   |
Oct 12 14:56:52.235 INFO kablam! 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Oct 12 14:56:52.235 INFO kablam!   |         ^ help: consider using `_f` instead
Oct 12 14:56:52.236 INFO kablam!   |
Oct 12 14:56:52.236 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 12 14:56:52.237 INFO kablam! 
Oct 12 14:56:52.237 INFO kablam! warning: unused variable: `f`
Oct 12 14:56:52.237 INFO kablam!  --> src/main.rs:4:9
Oct 12 14:56:52.238 INFO kablam!   |
Oct 12 14:56:52.238 INFO kablam! 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Oct 12 14:56:52.238 INFO kablam!   |         ^ help: consider using `_f` instead
Oct 12 14:56:52.238 INFO kablam!   |
Oct 12 14:56:52.239 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 12 14:56:52.239 INFO kablam! 
Oct 12 14:56:52.259 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
Oct 12 14:56:52.260 INFO kablam! su: No module specific data is present
Oct 12 14:56:52.659 INFO running `"docker" "rm" "-f" "bffdee6daa38b5cde9752642ec43bfe9c3325bbce306485053e43cb68a7953fc"`
Oct 12 14:56:52.900 INFO blam! bffdee6daa38b5cde9752642ec43bfe9c3325bbce306485053e43cb68a7953fc