Nov 04 00:22:51.557 INFO checking robbystk/rust-by-the-book against try#e740b9aa0b624fa39feb39613e76d15bdf57e594 for pr-55655
Nov 04 00:22:51.559 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-6/try#e740b9aa0b624fa39feb39613e76d15bdf57e594:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55655/try#e740b9aa0b624fa39feb39613e76d15bdf57e594:/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 +e740b9aa0b624fa39feb39613e76d15bdf57e594-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 04 00:22:52.083 INFO blam! 2218beefb616360e7acb2c6977d05efcf8782fbf78e56c814f680c806055b18b
Nov 04 00:22:52.089 INFO running `"docker" "start" "-a" "2218beefb616360e7acb2c6977d05efcf8782fbf78e56c814f680c806055b18b"`
Nov 04 00:22:53.611 INFO kablam! usermod: no changes
Nov 04 00:22:53.671 INFO kablam!     Checking errors v0.1.0 (/source)
Nov 04 00:22:54.295 INFO kablam! warning: unused variable: `f`
Nov 04 00:22:54.295 INFO kablam!  --> src/main.rs:4:9
Nov 04 00:22:54.295 INFO kablam!   |
Nov 04 00:22:54.295 INFO kablam! 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Nov 04 00:22:54.295 INFO kablam!   |         ^ help: consider using `_f` instead
Nov 04 00:22:54.295 INFO kablam!   |
Nov 04 00:22:54.295 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 04 00:22:54.295 INFO kablam! 
Nov 04 00:22:54.315 INFO kablam! warning: unused variable: `f`
Nov 04 00:22:54.315 INFO kablam!  --> src/main.rs:4:9
Nov 04 00:22:54.315 INFO kablam!   |
Nov 04 00:22:54.315 INFO kablam! 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Nov 04 00:22:54.315 INFO kablam!   |         ^ help: consider using `_f` instead
Nov 04 00:22:54.315 INFO kablam!   |
Nov 04 00:22:54.315 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 04 00:22:54.315 INFO kablam! 
Nov 04 00:22:54.360 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
Nov 04 00:22:54.362 INFO kablam! su: No module specific data is present
Nov 04 00:22:55.586 INFO running `"docker" "rm" "-f" "2218beefb616360e7acb2c6977d05efcf8782fbf78e56c814f680c806055b18b"`
Nov 04 00:22:55.819 INFO blam! 2218beefb616360e7acb2c6977d05efcf8782fbf78e56c814f680c806055b18b