Dec 11 23:46:54.836 INFO checking VaclavStebra/rust-book-references-and-borrowing against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 23:46:54.836 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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"`
Dec 11 23:46:55.390 INFO [stdout] a6ba6e4093cc334257a9d92dcae9b063b82099cf21b1908934bfca9dd71c1e7a
Dec 11 23:46:55.392 INFO running `"docker" "start" "-a" "a6ba6e4093cc334257a9d92dcae9b063b82099cf21b1908934bfca9dd71c1e7a"`
Dec 11 23:46:56.308 INFO [stderr] usermod: no changes
Dec 11 23:46:56.356 INFO [stderr]     Checking rust-book-references-and-borrowing v0.1.0 (/source)
Dec 11 23:46:56.797 INFO [stderr] warning: unused variable: `r1`
Dec 11 23:46:56.797 INFO [stderr]   --> src/main.rs:20:9
Dec 11 23:46:56.797 INFO [stderr]    |
Dec 11 23:46:56.797 INFO [stderr] 20 |     let r1 = &mut s2;
Dec 11 23:46:56.797 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Dec 11 23:46:56.797 INFO [stderr]    |
Dec 11 23:46:56.797 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 23:46:56.797 INFO [stderr] 
Dec 11 23:46:56.876 INFO [stderr] warning: unused variable: `r1`
Dec 11 23:46:56.876 INFO [stderr]   --> src/main.rs:20:9
Dec 11 23:46:56.876 INFO [stderr]    |
Dec 11 23:46:56.876 INFO [stderr] 20 |     let r1 = &mut s2;
Dec 11 23:46:56.876 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Dec 11 23:46:56.876 INFO [stderr]    |
Dec 11 23:46:56.876 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 23:46:56.876 INFO [stderr] 
Dec 11 23:46:56.931 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
Dec 11 23:46:56.931 INFO [stderr] su: No module specific data is present
Dec 11 23:46:57.830 INFO running `"docker" "inspect" "a6ba6e4093cc334257a9d92dcae9b063b82099cf21b1908934bfca9dd71c1e7a"`
Dec 11 23:46:58.276 INFO running `"docker" "rm" "-f" "a6ba6e4093cc334257a9d92dcae9b063b82099cf21b1908934bfca9dd71c1e7a"`
Dec 11 23:46:58.586 INFO [stdout] a6ba6e4093cc334257a9d92dcae9b063b82099cf21b1908934bfca9dd71c1e7a