Nov 02 07:52:46.799 INFO checking robbystk/rust-by-the-book against try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7 for pr-55517
Nov 02 07:52:46.799 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55517/worker-5/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55517/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/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 +dc8b02d6f1e93f212fc39844ea688b634b4a03c7-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"`
Nov 02 07:52:47.032 INFO blam! ba90672e49d028c662fad0d19ee7f9bcc0ed8ac635f05fd5b2a65ab4a36c043c
Nov 02 07:52:47.040 INFO running `"docker" "start" "-a" "ba90672e49d028c662fad0d19ee7f9bcc0ed8ac635f05fd5b2a65ab4a36c043c"`
Nov 02 07:52:48.004 INFO kablam! usermod: no changes
Nov 02 07:52:48.038 INFO kablam!     Checking errors v0.1.0 (/source)
Nov 02 07:52:48.316 INFO kablam! warning: unused variable: `f`
Nov 02 07:52:48.316 INFO kablam!  --> src/main.rs:4:9
Nov 02 07:52:48.316 INFO kablam!   |
Nov 02 07:52:48.316 INFO kablam! 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Nov 02 07:52:48.316 INFO kablam!   |         ^ help: consider using `_f` instead
Nov 02 07:52:48.316 INFO kablam!   |
Nov 02 07:52:48.316 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 02 07:52:48.316 INFO kablam! 
Nov 02 07:52:48.336 INFO kablam! warning: unused variable: `f`
Nov 02 07:52:48.336 INFO kablam!  --> src/main.rs:4:9
Nov 02 07:52:48.336 INFO kablam!   |
Nov 02 07:52:48.336 INFO kablam! 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Nov 02 07:52:48.336 INFO kablam!   |         ^ help: consider using `_f` instead
Nov 02 07:52:48.336 INFO kablam!   |
Nov 02 07:52:48.336 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 02 07:52:48.336 INFO kablam! 
Nov 02 07:52:48.360 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
Nov 02 07:52:48.368 INFO kablam! su: No module specific data is present
Nov 02 07:52:48.992 INFO running `"docker" "rm" "-f" "ba90672e49d028c662fad0d19ee7f9bcc0ed8ac635f05fd5b2a65ab4a36c043c"`
Nov 02 07:52:49.309 INFO blam! ba90672e49d028c662fad0d19ee7f9bcc0ed8ac635f05fd5b2a65ab4a36c043c