Nov 30 08:06:42.401 INFO checking VaclavStebra/rust-book-references-and-borrowing against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 08:06:42.401 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-4/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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 30 08:06:42.600 INFO [stdout] 40c13b6d2207d7525c61f720aa223d1daa97b04ec1d38cd97e551099b9f4e529
Nov 30 08:06:42.602 INFO running `"docker" "start" "-a" "40c13b6d2207d7525c61f720aa223d1daa97b04ec1d38cd97e551099b9f4e529"`
Nov 30 08:06:43.435 INFO [stderr] usermod: no changes
Nov 30 08:06:43.472 INFO [stderr]     Checking rust-book-references-and-borrowing v0.1.0 (/source)
Nov 30 08:06:43.835 INFO [stderr] warning: unused variable: `r1`
Nov 30 08:06:43.835 INFO [stderr]   --> src/main.rs:20:9
Nov 30 08:06:43.835 INFO [stderr]    |
Nov 30 08:06:43.835 INFO [stderr] 20 |     let r1 = &mut s2;
Nov 30 08:06:43.835 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Nov 30 08:06:43.835 INFO [stderr]    |
Nov 30 08:06:43.835 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 08:06:43.835 INFO [stderr] 
Nov 30 08:06:43.915 INFO [stderr] warning: unused variable: `r1`
Nov 30 08:06:43.915 INFO [stderr]   --> src/main.rs:20:9
Nov 30 08:06:43.915 INFO [stderr]    |
Nov 30 08:06:43.915 INFO [stderr] 20 |     let r1 = &mut s2;
Nov 30 08:06:43.915 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Nov 30 08:06:43.915 INFO [stderr]    |
Nov 30 08:06:43.915 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 08:06:43.915 INFO [stderr] 
Nov 30 08:06:43.939 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
Nov 30 08:06:43.941 INFO [stderr] su: No module specific data is present
Nov 30 08:06:44.270 INFO running `"docker" "inspect" "40c13b6d2207d7525c61f720aa223d1daa97b04ec1d38cd97e551099b9f4e529"`
Nov 30 08:06:44.357 INFO running `"docker" "rm" "-f" "40c13b6d2207d7525c61f720aa223d1daa97b04ec1d38cd97e551099b9f4e529"`
Nov 30 08:06:44.439 INFO [stdout] 40c13b6d2207d7525c61f720aa223d1daa97b04ec1d38cd97e551099b9f4e529