Dec 11 06:32:46.073 INFO checking vti/rust-test against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 06:32:46.073 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 06:32:46.570 INFO [stdout] 6d6875c78ae923ed274c5e759c046b759a191822252c5d41aa6d1f2e3404809f
Dec 11 06:32:46.576 INFO running `"docker" "start" "-a" "6d6875c78ae923ed274c5e759c046b759a191822252c5d41aa6d1f2e3404809f"`
Dec 11 06:32:47.916 INFO [stderr] usermod: no changes
Dec 11 06:32:47.952 INFO [stderr]     Checking rust-test v0.1.0 (/source)
Dec 11 06:32:48.172 INFO [stderr] warning: value assigned to `a` is never read
Dec 11 06:32:48.172 INFO [stderr]  --> src/main.rs:7:5
Dec 11 06:32:48.172 INFO [stderr]   |
Dec 11 06:32:48.172 INFO [stderr] 7 |     a = a + b;
Dec 11 06:32:48.172 INFO [stderr]   |     ^
Dec 11 06:32:48.173 INFO [stderr]   |
Dec 11 06:32:48.173 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 11 06:32:48.173 INFO [stderr] 
Dec 11 06:32:48.174 INFO [stderr] warning: variable does not need to be mutable
Dec 11 06:32:48.174 INFO [stderr]  --> src/main.rs:5:9
Dec 11 06:32:48.174 INFO [stderr]   |
Dec 11 06:32:48.174 INFO [stderr] 5 |     let mut b = 0;
Dec 11 06:32:48.174 INFO [stderr]   |         ----^
Dec 11 06:32:48.174 INFO [stderr]   |         |
Dec 11 06:32:48.174 INFO [stderr]   |         help: remove this `mut`
Dec 11 06:32:48.174 INFO [stderr]   |
Dec 11 06:32:48.174 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 11 06:32:48.174 INFO [stderr] 
Dec 11 06:32:48.238 INFO [stderr] warning: value assigned to `a` is never read
Dec 11 06:32:48.238 INFO [stderr]  --> src/main.rs:7:5
Dec 11 06:32:48.238 INFO [stderr]   |
Dec 11 06:32:48.238 INFO [stderr] 7 |     a = a + b;
Dec 11 06:32:48.238 INFO [stderr]   |     ^
Dec 11 06:32:48.238 INFO [stderr]   |
Dec 11 06:32:48.238 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 11 06:32:48.238 INFO [stderr] 
Dec 11 06:32:48.238 INFO [stderr] warning: variable does not need to be mutable
Dec 11 06:32:48.238 INFO [stderr]  --> src/main.rs:5:9
Dec 11 06:32:48.238 INFO [stderr]   |
Dec 11 06:32:48.238 INFO [stderr] 5 |     let mut b = 0;
Dec 11 06:32:48.238 INFO [stderr]   |         ----^
Dec 11 06:32:48.238 INFO [stderr]   |         |
Dec 11 06:32:48.238 INFO [stderr]   |         help: remove this `mut`
Dec 11 06:32:48.238 INFO [stderr]   |
Dec 11 06:32:48.238 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 11 06:32:48.238 INFO [stderr] 
Dec 11 06:32:48.280 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
Dec 11 06:32:48.280 INFO [stderr] su: No module specific data is present
Dec 11 06:32:49.263 INFO running `"docker" "inspect" "6d6875c78ae923ed274c5e759c046b759a191822252c5d41aa6d1f2e3404809f"`
Dec 11 06:32:49.598 INFO running `"docker" "rm" "-f" "6d6875c78ae923ed274c5e759c046b759a191822252c5d41aa6d1f2e3404809f"`
Dec 11 06:32:50.088 INFO [stdout] 6d6875c78ae923ed274c5e759c046b759a191822252c5d41aa6d1f2e3404809f