Dec 19 05:52:43.346 INFO checking vti/rust-test against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 05:52:43.347 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/vti/rust-test:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:52:43.928 INFO [stdout] 5769aeb2a9845e688de1ce3c991d3f83cdd50cbe9932bd98d5a423bc8941db68
Dec 19 05:52:43.936 INFO running `"docker" "start" "-a" "5769aeb2a9845e688de1ce3c991d3f83cdd50cbe9932bd98d5a423bc8941db68"`
Dec 19 05:52:45.264 INFO [stderr]     Checking rust-test v0.1.0 (/opt/crater/workdir)
Dec 19 05:52:45.468 INFO [stderr] warning: value assigned to `a` is never read
Dec 19 05:52:45.468 INFO [stderr]  --> src/main.rs:7:5
Dec 19 05:52:45.468 INFO [stderr]   |
Dec 19 05:52:45.468 INFO [stderr] 7 |     a = a + b;
Dec 19 05:52:45.468 INFO [stderr]   |     ^
Dec 19 05:52:45.468 INFO [stderr]   |
Dec 19 05:52:45.468 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 19 05:52:45.468 INFO [stderr]   = help: maybe it is overwritten before being read?
Dec 19 05:52:45.468 INFO [stderr] 
Dec 19 05:52:45.468 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:52:45.468 INFO [stderr]  --> src/main.rs:5:9
Dec 19 05:52:45.468 INFO [stderr]   |
Dec 19 05:52:45.468 INFO [stderr] 5 |     let mut b = 0;
Dec 19 05:52:45.468 INFO [stderr]   |         ----^
Dec 19 05:52:45.468 INFO [stderr]   |         |
Dec 19 05:52:45.468 INFO [stderr]   |         help: remove this `mut`
Dec 19 05:52:45.468 INFO [stderr]   |
Dec 19 05:52:45.468 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 19 05:52:45.468 INFO [stderr] 
Dec 19 05:52:45.497 INFO [stderr] warning: value assigned to `a` is never read
Dec 19 05:52:45.497 INFO [stderr]  --> src/main.rs:7:5
Dec 19 05:52:45.497 INFO [stderr]   |
Dec 19 05:52:45.497 INFO [stderr] 7 |     a = a + b;
Dec 19 05:52:45.497 INFO [stderr]   |     ^
Dec 19 05:52:45.497 INFO [stderr]   |
Dec 19 05:52:45.497 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 19 05:52:45.497 INFO [stderr]   = help: maybe it is overwritten before being read?
Dec 19 05:52:45.497 INFO [stderr] 
Dec 19 05:52:45.497 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:52:45.497 INFO [stderr]  --> src/main.rs:5:9
Dec 19 05:52:45.498 INFO [stderr]   |
Dec 19 05:52:45.498 INFO [stderr] 5 |     let mut b = 0;
Dec 19 05:52:45.498 INFO [stderr]   |         ----^
Dec 19 05:52:45.498 INFO [stderr]   |         |
Dec 19 05:52:45.498 INFO [stderr]   |         help: remove this `mut`
Dec 19 05:52:45.498 INFO [stderr]   |
Dec 19 05:52:45.498 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 19 05:52:45.498 INFO [stderr] 
Dec 19 05:52:45.516 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
Dec 19 05:52:46.195 INFO running `"docker" "inspect" "5769aeb2a9845e688de1ce3c991d3f83cdd50cbe9932bd98d5a423bc8941db68"`
Dec 19 05:52:46.360 INFO running `"docker" "rm" "-f" "5769aeb2a9845e688de1ce3c991d3f83cdd50cbe9932bd98d5a423bc8941db68"`
Dec 19 05:52:46.604 INFO [stdout] 5769aeb2a9845e688de1ce3c991d3f83cdd50cbe9932bd98d5a423bc8941db68