Dec 19 15:09:42.355 INFO checking jinkaitoo/hello_world against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 15:09:42.355 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/jinkaitoo/hello_world:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 15:09:42.732 INFO [stdout] 8f6f742554858e9c3fa1294e5436aedee11aff0114936d9839d88881b54054ec
Dec 19 15:09:42.740 INFO running `"docker" "start" "-a" "8f6f742554858e9c3fa1294e5436aedee11aff0114936d9839d88881b54054ec"`
Dec 19 15:09:43.717 INFO [stderr]     Checking hello_world v0.1.0 (/opt/crater/workdir)
Dec 19 15:09:43.900 INFO [stderr] warning: value assigned to `x` is never read
Dec 19 15:09:43.900 INFO [stderr]  --> src/main.rs:2:13
Dec 19 15:09:43.900 INFO [stderr]   |
Dec 19 15:09:43.900 INFO [stderr] 2 |     let mut x: i32 = 1;
Dec 19 15:09:43.900 INFO [stderr]   |             ^
Dec 19 15:09:43.900 INFO [stderr]   |
Dec 19 15:09:43.900 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 19 15:09:43.900 INFO [stderr]   = help: maybe it is overwritten before being read?
Dec 19 15:09:43.900 INFO [stderr] 
Dec 19 15:09:43.900 INFO [stderr] warning: unused variable: `y`
Dec 19 15:09:43.900 INFO [stderr]  --> src/main.rs:6:9
Dec 19 15:09:43.900 INFO [stderr]   |
Dec 19 15:09:43.900 INFO [stderr] 6 |     let y = 4;
Dec 19 15:09:43.900 INFO [stderr]   |         ^ help: consider using `_y` instead
Dec 19 15:09:43.900 INFO [stderr]   |
Dec 19 15:09:43.900 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 19 15:09:43.900 INFO [stderr] 
Dec 19 15:09:43.933 INFO [stderr] warning: value assigned to `x` is never read
Dec 19 15:09:43.933 INFO [stderr]  --> src/main.rs:2:13
Dec 19 15:09:43.933 INFO [stderr]   |
Dec 19 15:09:43.933 INFO [stderr] 2 |     let mut x: i32 = 1;
Dec 19 15:09:43.933 INFO [stderr]   |             ^
Dec 19 15:09:43.933 INFO [stderr]   |
Dec 19 15:09:43.933 INFO [stderr]   = note: #[warn(unused_assignments)] on by default
Dec 19 15:09:43.933 INFO [stderr]   = help: maybe it is overwritten before being read?
Dec 19 15:09:43.933 INFO [stderr] 
Dec 19 15:09:43.933 INFO [stderr] warning: unused variable: `y`
Dec 19 15:09:43.933 INFO [stderr]  --> src/main.rs:6:9
Dec 19 15:09:43.933 INFO [stderr]   |
Dec 19 15:09:43.933 INFO [stderr] 6 |     let y = 4;
Dec 19 15:09:43.933 INFO [stderr]   |         ^ help: consider using `_y` instead
Dec 19 15:09:43.933 INFO [stderr]   |
Dec 19 15:09:43.934 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 19 15:09:43.934 INFO [stderr] 
Dec 19 15:09:43.959 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
Dec 19 15:09:44.448 INFO running `"docker" "inspect" "8f6f742554858e9c3fa1294e5436aedee11aff0114936d9839d88881b54054ec"`
Dec 19 15:09:44.662 INFO running `"docker" "rm" "-f" "8f6f742554858e9c3fa1294e5436aedee11aff0114936d9839d88881b54054ec"`
Dec 19 15:09:44.780 INFO [stdout] 8f6f742554858e9c3fa1294e5436aedee11aff0114936d9839d88881b54054ec