Dec 19 15:41:17.880 INFO checking intrepion/example-x-rust-x-rustbyexample-com-x-std-option against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 15:41:17.880 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/intrepion/example-x-rust-x-rustbyexample-com-x-std-option:/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 15:41:18.034 INFO [stdout] f2d72238217fcfa757f0ca7b92cd3b4778e29f4e42d35f17256e440dfeec8c7c
Dec 19 15:41:18.057 INFO running `"docker" "start" "-a" "f2d72238217fcfa757f0ca7b92cd3b4778e29f4e42d35f17256e440dfeec8c7c"`
Dec 19 15:41:18.551 INFO [stderr]     Checking example-x-rust-x-rustbyexample-com-x-std-option v0.1.0 (/opt/crater/workdir)
Dec 19 15:41:18.670 INFO [stderr] warning: unused variable: `none`
Dec 19 15:41:18.670 INFO [stderr]   --> src/main.rs:28:9
Dec 19 15:41:18.670 INFO [stderr]    |
Dec 19 15:41:18.670 INFO [stderr] 28 |     let none: Option<i32> = None;
Dec 19 15:41:18.670 INFO [stderr]    |         ^^^^ help: consider using `_none` instead
Dec 19 15:41:18.670 INFO [stderr]    |
Dec 19 15:41:18.670 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 15:41:18.670 INFO [stderr] 
Dec 19 15:41:18.699 INFO [stderr] warning: unused variable: `none`
Dec 19 15:41:18.699 INFO [stderr]   --> src/main.rs:28:9
Dec 19 15:41:18.699 INFO [stderr]    |
Dec 19 15:41:18.699 INFO [stderr] 28 |     let none: Option<i32> = None;
Dec 19 15:41:18.699 INFO [stderr]    |         ^^^^ help: consider using `_none` instead
Dec 19 15:41:18.699 INFO [stderr]    |
Dec 19 15:41:18.699 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 15:41:18.700 INFO [stderr] 
Dec 19 15:41:18.717 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.17s
Dec 19 15:41:19.007 INFO running `"docker" "inspect" "f2d72238217fcfa757f0ca7b92cd3b4778e29f4e42d35f17256e440dfeec8c7c"`
Dec 19 15:41:19.089 INFO running `"docker" "rm" "-f" "f2d72238217fcfa757f0ca7b92cd3b4778e29f4e42d35f17256e440dfeec8c7c"`
Dec 19 15:41:19.195 INFO [stdout] f2d72238217fcfa757f0ca7b92cd3b4778e29f4e42d35f17256e440dfeec8c7c