Dec 17 12:19:53.657 INFO checking vti/rust-test against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 12:19:53.657 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 12:19:54.126 INFO [stdout] dfb8c21e1d5df168fb6f0f1f43c318bd9e8f841370a80230a81ffa22966a7dee
Dec 17 12:19:54.132 INFO running `"docker" "start" "-a" "dfb8c21e1d5df168fb6f0f1f43c318bd9e8f841370a80230a81ffa22966a7dee"`
Dec 17 12:19:55.668 INFO [stderr]     Checking rust-test v0.1.0 (/opt/crater/workdir)
Dec 17 12:19:55.852 INFO [stderr] warning: value assigned to `a` is never read
Dec 17 12:19:55.852 INFO [stderr]  --> src/main.rs:7:5
Dec 17 12:19:55.852 INFO [stderr]   |
Dec 17 12:19:55.852 INFO [stderr] 7 |     a = a + b;
Dec 17 12:19:55.852 INFO [stderr]   |     ^
Dec 17 12:19:55.852 INFO [stderr]   |
Dec 17 12:19:55.852 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 17 12:19:55.852 INFO [stderr] 
Dec 17 12:19:55.852 INFO [stderr] warning: variable does not need to be mutable
Dec 17 12:19:55.852 INFO [stderr]  --> src/main.rs:5:9
Dec 17 12:19:55.852 INFO [stderr]   |
Dec 17 12:19:55.852 INFO [stderr] 5 |     let mut b = 0;
Dec 17 12:19:55.852 INFO [stderr]   |         ----^
Dec 17 12:19:55.852 INFO [stderr]   |         |
Dec 17 12:19:55.852 INFO [stderr]   |         help: remove this `mut`
Dec 17 12:19:55.852 INFO [stderr]   |
Dec 17 12:19:55.852 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 17 12:19:55.852 INFO [stderr] 
Dec 17 12:19:55.884 INFO [stderr] warning: value assigned to `a` is never read
Dec 17 12:19:55.884 INFO [stderr]  --> src/main.rs:7:5
Dec 17 12:19:55.884 INFO [stderr]   |
Dec 17 12:19:55.884 INFO [stderr] 7 |     a = a + b;
Dec 17 12:19:55.884 INFO [stderr]   |     ^
Dec 17 12:19:55.884 INFO [stderr]   |
Dec 17 12:19:55.884 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 17 12:19:55.884 INFO [stderr] 
Dec 17 12:19:55.884 INFO [stderr] warning: variable does not need to be mutable
Dec 17 12:19:55.884 INFO [stderr]  --> src/main.rs:5:9
Dec 17 12:19:55.884 INFO [stderr]   |
Dec 17 12:19:55.884 INFO [stderr] 5 |     let mut b = 0;
Dec 17 12:19:55.884 INFO [stderr]   |         ----^
Dec 17 12:19:55.884 INFO [stderr]   |         |
Dec 17 12:19:55.884 INFO [stderr]   |         help: remove this `mut`
Dec 17 12:19:55.884 INFO [stderr]   |
Dec 17 12:19:55.884 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 17 12:19:55.884 INFO [stderr] 
Dec 17 12:19:55.904 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
Dec 17 12:19:56.730 INFO running `"docker" "inspect" "dfb8c21e1d5df168fb6f0f1f43c318bd9e8f841370a80230a81ffa22966a7dee"`
Dec 17 12:19:56.970 INFO running `"docker" "rm" "-f" "dfb8c21e1d5df168fb6f0f1f43c318bd9e8f841370a80230a81ffa22966a7dee"`
Dec 17 12:19:57.296 INFO [stdout] dfb8c21e1d5df168fb6f0f1f43c318bd9e8f841370a80230a81ffa22966a7dee