Nov 28 10:35:26.547 INFO checking VaclavStebra/rust-book-references-and-borrowing against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 10:35:26.548 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-0/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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 28 10:35:26.774 INFO [stdout] b9b8139dffd88a55c9f7a0ceb00f06b2a72c635f97781ce0bde6654fe7ec437f
Nov 28 10:35:26.776 INFO running `"docker" "start" "-a" "b9b8139dffd88a55c9f7a0ceb00f06b2a72c635f97781ce0bde6654fe7ec437f"`
Nov 28 10:35:27.179 INFO [stderr] usermod: no changes
Nov 28 10:35:27.215 INFO [stderr]     Checking rust-book-references-and-borrowing v0.1.0 (/source)
Nov 28 10:35:27.508 INFO [stderr] warning: unused variable: `r1`
Nov 28 10:35:27.508 INFO [stderr]   --> src/main.rs:20:9
Nov 28 10:35:27.508 INFO [stderr]    |
Nov 28 10:35:27.508 INFO [stderr] 20 |     let r1 = &mut s2;
Nov 28 10:35:27.508 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Nov 28 10:35:27.508 INFO [stderr]    |
Nov 28 10:35:27.508 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 10:35:27.509 INFO [stderr] 
Nov 28 10:35:27.563 INFO [stderr] warning: unused variable: `r1`
Nov 28 10:35:27.563 INFO [stderr]   --> src/main.rs:20:9
Nov 28 10:35:27.563 INFO [stderr]    |
Nov 28 10:35:27.563 INFO [stderr] 20 |     let r1 = &mut s2;
Nov 28 10:35:27.563 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Nov 28 10:35:27.563 INFO [stderr]    |
Nov 28 10:35:27.563 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 10:35:27.563 INFO [stderr] 
Nov 28 10:35:27.574 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
Nov 28 10:35:27.575 INFO [stderr] su: No module specific data is present
Nov 28 10:35:27.832 INFO running `"docker" "inspect" "b9b8139dffd88a55c9f7a0ceb00f06b2a72c635f97781ce0bde6654fe7ec437f"`
Nov 28 10:35:27.921 INFO running `"docker" "rm" "-f" "b9b8139dffd88a55c9f7a0ceb00f06b2a72c635f97781ce0bde6654fe7ec437f"`
Nov 28 10:35:28.037 INFO [stdout] b9b8139dffd88a55c9f7a0ceb00f06b2a72c635f97781ce0bde6654fe7ec437f