Oct 12 13:30:25.373 INFO checking slavovojacek/8QP_rust against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 12 13:30:25.373 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-7/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-7/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/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 +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-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 12 13:30:25.770 INFO blam! e66a9bef56a907b81420dcc26f1fab7e780a8491a9609d34f935f17561e67681
Oct 12 13:30:25.776 INFO running `"docker" "start" "-a" "e66a9bef56a907b81420dcc26f1fab7e780a8491a9609d34f935f17561e67681"`
Oct 12 13:30:27.346 INFO kablam! usermod: no changes
Oct 12 13:30:27.436 INFO kablam!     Checking eight_queen_problem v0.1.0 (/source)
Oct 12 13:30:27.812 INFO kablam! warning: value assigned to `empty_squares` is never read
Oct 12 13:30:27.812 INFO kablam!   --> src/main.rs:20:13
Oct 12 13:30:27.812 INFO kablam!    |
Oct 12 13:30:27.812 INFO kablam! 20 |     let mut empty_squares: Vec<Position> = Vec::new();
Oct 12 13:30:27.812 INFO kablam!    |             ^^^^^^^^^^^^^
Oct 12 13:30:27.812 INFO kablam!    |
Oct 12 13:30:27.812 INFO kablam!    = note: #[warn(unused_assignments)] on by default
Oct 12 13:30:27.812 INFO kablam! 
Oct 12 13:30:27.812 INFO kablam! warning: unused variable: `r`
Oct 12 13:30:27.812 INFO kablam!    --> src/main.rs:113:33
Oct 12 13:30:27.812 INFO kablam!     |
Oct 12 13:30:27.812 INFO kablam! 113 | fn fill_col(board: &mut Board, (r, c): Position) -> Result<(), Position> {
Oct 12 13:30:27.812 INFO kablam!     |                                 ^ help: consider using `_r` instead
Oct 12 13:30:27.812 INFO kablam!     |
Oct 12 13:30:27.812 INFO kablam!     = note: #[warn(unused_variables)] on by default
Oct 12 13:30:27.812 INFO kablam! 
Oct 12 13:30:27.884 INFO kablam! warning: value assigned to `empty_squares` is never read
Oct 12 13:30:27.884 INFO kablam!   --> src/main.rs:20:13
Oct 12 13:30:27.884 INFO kablam!    |
Oct 12 13:30:27.884 INFO kablam! 20 |     let mut empty_squares: Vec<Position> = Vec::new();
Oct 12 13:30:27.884 INFO kablam!    |             ^^^^^^^^^^^^^
Oct 12 13:30:27.884 INFO kablam!    |
Oct 12 13:30:27.884 INFO kablam!    = note: #[warn(unused_assignments)] on by default
Oct 12 13:30:27.884 INFO kablam! 
Oct 12 13:30:27.884 INFO kablam! warning: unused variable: `r`
Oct 12 13:30:27.884 INFO kablam!    --> src/main.rs:113:33
Oct 12 13:30:27.884 INFO kablam!     |
Oct 12 13:30:27.884 INFO kablam! 113 | fn fill_col(board: &mut Board, (r, c): Position) -> Result<(), Position> {
Oct 12 13:30:27.884 INFO kablam!     |                                 ^ help: consider using `_r` instead
Oct 12 13:30:27.884 INFO kablam!     |
Oct 12 13:30:27.884 INFO kablam!     = note: #[warn(unused_variables)] on by default
Oct 12 13:30:27.884 INFO kablam! 
Oct 12 13:30:27.940 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
Oct 12 13:30:27.940 INFO kablam! su: No module specific data is present
Oct 12 13:30:28.716 INFO running `"docker" "rm" "-f" "e66a9bef56a907b81420dcc26f1fab7e780a8491a9609d34f935f17561e67681"`
Oct 12 13:30:29.084 INFO blam! e66a9bef56a907b81420dcc26f1fab7e780a8491a9609d34f935f17561e67681