Oct 13 02:10:00.901 INFO checking VaclavStebra/rust-book-references-and-borrowing against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 02:10:00.903 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-2/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-2/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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 13 02:10:01.276 INFO blam! d00208d49008ffdb8a1ff3ca09ffe5965b5f37f8dd23ead6ff5383a9fbc177bd
Oct 13 02:10:01.288 INFO running `"docker" "start" "-a" "d00208d49008ffdb8a1ff3ca09ffe5965b5f37f8dd23ead6ff5383a9fbc177bd"`
Oct 13 02:10:01.847 INFO kablam! usermod: no changes
Oct 13 02:10:01.890 INFO kablam!     Checking rust-book-references-and-borrowing v0.1.0 (/source)
Oct 13 02:10:02.268 INFO kablam! warning: unused variable: `r1`
Oct 13 02:10:02.268 INFO kablam!   --> src/main.rs:20:9
Oct 13 02:10:02.269 INFO kablam!    |
Oct 13 02:10:02.269 INFO kablam! 20 |     let r1 = &mut s2;
Oct 13 02:10:02.269 INFO kablam!    |         ^^ help: consider using `_r1` instead
Oct 13 02:10:02.269 INFO kablam!    |
Oct 13 02:10:02.269 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 13 02:10:02.269 INFO kablam! 
Oct 13 02:10:02.389 INFO kablam! warning: unused variable: `r1`
Oct 13 02:10:02.389 INFO kablam!   --> src/main.rs:20:9
Oct 13 02:10:02.389 INFO kablam!    |
Oct 13 02:10:02.390 INFO kablam! 20 |     let r1 = &mut s2;
Oct 13 02:10:02.390 INFO kablam!    |         ^^ help: consider using `_r1` instead
Oct 13 02:10:02.390 INFO kablam!    |
Oct 13 02:10:02.391 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 13 02:10:02.391 INFO kablam! 
Oct 13 02:10:02.418 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
Oct 13 02:10:02.421 INFO kablam! su: No module specific data is present
Oct 13 02:10:02.751 INFO running `"docker" "rm" "-f" "d00208d49008ffdb8a1ff3ca09ffe5965b5f37f8dd23ead6ff5383a9fbc177bd"`
Oct 13 02:10:02.928 INFO blam! d00208d49008ffdb8a1ff3ca09ffe5965b5f37f8dd23ead6ff5383a9fbc177bd