Oct 26 22:08:56.093 INFO checking robbystk/rust-by-the-book against try#19f01b935b91481fd445b16b533d2f87661bf12e for pr-55192-2
Oct 26 22:08:56.094 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192-2/worker-5/try#19f01b935b91481fd445b16b533d2f87661bf12e:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-5/pr-55192-2/try#19f01b935b91481fd445b16b533d2f87661bf12e:/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 +19f01b935b91481fd445b16b533d2f87661bf12e-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 26 22:08:56.327 INFO blam! f37a8a610656350de133876be7eb87cc37dcba359fdb69316d7de48985396667
Oct 26 22:08:56.332 INFO running `"docker" "start" "-a" "f37a8a610656350de133876be7eb87cc37dcba359fdb69316d7de48985396667"`
Oct 26 22:08:56.958 INFO kablam! usermod: no changes
Oct 26 22:08:57.031 INFO kablam!     Checking errors v0.1.0 (/source)
Oct 26 22:08:57.446 INFO kablam! warning: unused variable: `f`
Oct 26 22:08:57.446 INFO kablam!  --> src/main.rs:4:9
Oct 26 22:08:57.446 INFO kablam!   |
Oct 26 22:08:57.446 INFO kablam! 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Oct 26 22:08:57.446 INFO kablam!   |         ^ help: consider using `_f` instead
Oct 26 22:08:57.446 INFO kablam!   |
Oct 26 22:08:57.446 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 26 22:08:57.446 INFO kablam! 
Oct 26 22:08:57.561 INFO kablam! warning: unused variable: `f`
Oct 26 22:08:57.562 INFO kablam!  --> src/main.rs:4:9
Oct 26 22:08:57.562 INFO kablam!   |
Oct 26 22:08:57.563 INFO kablam! 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Oct 26 22:08:57.563 INFO kablam!   |         ^ help: consider using `_f` instead
Oct 26 22:08:57.563 INFO kablam!   |
Oct 26 22:08:57.564 INFO kablam!   = note: #[warn(unused_variables)] on by default
Oct 26 22:08:57.564 INFO kablam! 
Oct 26 22:08:57.604 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
Oct 26 22:08:57.606 INFO kablam! su: No module specific data is present
Oct 26 22:08:58.695 INFO running `"docker" "rm" "-f" "f37a8a610656350de133876be7eb87cc37dcba359fdb69316d7de48985396667"`
Oct 26 22:08:58.979 INFO blam! f37a8a610656350de133876be7eb87cc37dcba359fdb69316d7de48985396667