Nov 06 15:19:24.212 INFO checking robbystk/rust-by-the-book against master#24e66c28980442a48d9458f1a4f9b76cc722dc8a for pr-55687
Nov 06 15:19:24.212 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55687/worker-5/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55687/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/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 +24e66c28980442a48d9458f1a4f9b76cc722dc8a-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 06 15:19:24.636 INFO blam! fcd5d8b000a8f15847f2aa799268f92804744e11bfb5b362c154c54e5e0c45fa
Nov 06 15:19:24.636 INFO running `"docker" "start" "-a" "fcd5d8b000a8f15847f2aa799268f92804744e11bfb5b362c154c54e5e0c45fa"`
Nov 06 15:19:25.688 INFO kablam! usermod: no changes
Nov 06 15:19:25.740 INFO kablam!     Checking errors v0.1.0 (/source)
Nov 06 15:19:26.092 INFO kablam! warning: unused variable: `f`
Nov 06 15:19:26.092 INFO kablam!  --> src/main.rs:4:9
Nov 06 15:19:26.092 INFO kablam!   |
Nov 06 15:19:26.092 INFO kablam! 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Nov 06 15:19:26.092 INFO kablam!   |         ^ help: consider using `_f` instead
Nov 06 15:19:26.092 INFO kablam!   |
Nov 06 15:19:26.092 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 06 15:19:26.092 INFO kablam! 
Nov 06 15:19:26.228 INFO kablam! warning: unused variable: `f`
Nov 06 15:19:26.228 INFO kablam!  --> src/main.rs:4:9
Nov 06 15:19:26.228 INFO kablam!   |
Nov 06 15:19:26.228 INFO kablam! 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Nov 06 15:19:26.228 INFO kablam!   |         ^ help: consider using `_f` instead
Nov 06 15:19:26.228 INFO kablam!   |
Nov 06 15:19:26.228 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 06 15:19:26.228 INFO kablam! 
Nov 06 15:19:26.262 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
Nov 06 15:19:26.265 INFO kablam! su: No module specific data is present
Nov 06 15:19:27.033 INFO running `"docker" "rm" "-f" "fcd5d8b000a8f15847f2aa799268f92804744e11bfb5b362c154c54e5e0c45fa"`
Nov 06 15:19:27.344 INFO blam! fcd5d8b000a8f15847f2aa799268f92804744e11bfb5b362c154c54e5e0c45fa