Nov 02 07:52:47.117 INFO checking robbystk/rust-by-the-book against master#f6e9a6e41cd9b1fb687e296b5a6d4c6ad399f862 for pr-55517
Nov 02 07:52:47.117 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55517/worker-4/master#f6e9a6e41cd9b1fb687e296b5a6d4c6ad399f862:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55517/master#f6e9a6e41cd9b1fb687e296b5a6d4c6ad399f862:/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 +f6e9a6e41cd9b1fb687e296b5a6d4c6ad399f862-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 07:52:47.528 INFO blam! c8432d56c9401c56db27d711576bd4ece1a95a17efdcd46d50e8a1b934378b29
Nov 02 07:52:47.536 INFO running `"docker" "start" "-a" "c8432d56c9401c56db27d711576bd4ece1a95a17efdcd46d50e8a1b934378b29"`
Nov 02 07:52:48.760 INFO kablam! usermod: no changes
Nov 02 07:52:48.832 INFO kablam!     Checking errors v0.1.0 (/source)
Nov 02 07:52:49.148 INFO kablam! warning: unused variable: `f`
Nov 02 07:52:49.148 INFO kablam!  --> src/main.rs:4:9
Nov 02 07:52:49.148 INFO kablam!   |
Nov 02 07:52:49.148 INFO kablam! 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Nov 02 07:52:49.148 INFO kablam!   |         ^ help: consider using `_f` instead
Nov 02 07:52:49.148 INFO kablam!   |
Nov 02 07:52:49.148 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 02 07:52:49.148 INFO kablam! 
Nov 02 07:52:49.148 INFO kablam! warning: unused variable: `f`
Nov 02 07:52:49.148 INFO kablam!  --> src/main.rs:4:9
Nov 02 07:52:49.148 INFO kablam!   |
Nov 02 07:52:49.148 INFO kablam! 4 |     let f = File::open("hello.txt").expect("Failed to open hello.txt");
Nov 02 07:52:49.148 INFO kablam!   |         ^ help: consider using `_f` instead
Nov 02 07:52:49.148 INFO kablam!   |
Nov 02 07:52:49.148 INFO kablam!   = note: #[warn(unused_variables)] on by default
Nov 02 07:52:49.148 INFO kablam! 
Nov 02 07:52:49.172 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
Nov 02 07:52:49.176 INFO kablam! su: No module specific data is present
Nov 02 07:52:50.210 INFO running `"docker" "rm" "-f" "c8432d56c9401c56db27d711576bd4ece1a95a17efdcd46d50e8a1b934378b29"`
Nov 02 07:52:50.514 INFO blam! c8432d56c9401c56db27d711576bd4ece1a95a17efdcd46d50e8a1b934378b29