Dec 19 19:13:14.181 INFO checking cemozerr/Rust-Cash-Register against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:13:14.181 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/cemozerr/Rust-Cash-Register:/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 19:13:14.641 INFO [stdout] 010ca043dc6e4b5c0317f86c3879903250a9dbd9a8cb8e663a3457132e450f9b
Dec 19 19:13:14.646 INFO running `"docker" "start" "-a" "010ca043dc6e4b5c0317f86c3879903250a9dbd9a8cb8e663a3457132e450f9b"`
Dec 19 19:13:16.152 INFO [stderr]     Checking cash_register v0.1.0 (/opt/crater/workdir)
Dec 19 19:13:16.632 INFO [stderr] warning: unused import: `Read`
Dec 19 19:13:16.632 INFO [stderr]  --> src/main.rs:5:21
Dec 19 19:13:16.632 INFO [stderr]   |
Dec 19 19:13:16.632 INFO [stderr] 5 | use std::io::{self, Read};
Dec 19 19:13:16.632 INFO [stderr]   |                     ^^^^
Dec 19 19:13:16.632 INFO [stderr]   |
Dec 19 19:13:16.632 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 19:13:16.632 INFO [stderr] 
Dec 19 19:13:16.680 INFO [stderr] warning: unused import: `Read`
Dec 19 19:13:16.680 INFO [stderr]  --> src/main.rs:5:21
Dec 19 19:13:16.680 INFO [stderr]   |
Dec 19 19:13:16.680 INFO [stderr] 5 | use std::io::{self, Read};
Dec 19 19:13:16.680 INFO [stderr]   |                     ^^^^
Dec 19 19:13:16.680 INFO [stderr]   |
Dec 19 19:13:16.680 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 19:13:16.680 INFO [stderr] 
Dec 19 19:13:16.744 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:13:16.744 INFO [stderr]   --> src/main.rs:80:13
Dec 19 19:13:16.744 INFO [stderr]    |
Dec 19 19:13:16.744 INFO [stderr] 80 |         let mut new_receipt = Receipt{
Dec 19 19:13:16.744 INFO [stderr]    |             ----^^^^^^^^^^^
Dec 19 19:13:16.744 INFO [stderr]    |             |
Dec 19 19:13:16.744 INFO [stderr]    |             help: remove this `mut`
Dec 19 19:13:16.744 INFO [stderr]    |
Dec 19 19:13:16.744 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 19:13:16.744 INFO [stderr] 
Dec 19 19:13:16.752 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:13:16.756 INFO [stderr]   --> src/main.rs:28:9
Dec 19 19:13:16.756 INFO [stderr]    |
Dec 19 19:13:16.756 INFO [stderr] 28 |         io::stdin().read_line(&mut buffer);
Dec 19 19:13:16.756 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:13:16.756 INFO [stderr]    |
Dec 19 19:13:16.756 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 19:13:16.756 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:13:16.756 INFO [stderr] 
Dec 19 19:13:16.790 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:13:16.790 INFO [stderr]   --> src/main.rs:80:13
Dec 19 19:13:16.790 INFO [stderr]    |
Dec 19 19:13:16.790 INFO [stderr] 80 |         let mut new_receipt = Receipt{
Dec 19 19:13:16.790 INFO [stderr]    |             ----^^^^^^^^^^^
Dec 19 19:13:16.790 INFO [stderr]    |             |
Dec 19 19:13:16.790 INFO [stderr]    |             help: remove this `mut`
Dec 19 19:13:16.790 INFO [stderr]    |
Dec 19 19:13:16.790 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 19:13:16.790 INFO [stderr] 
Dec 19 19:13:16.797 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:13:16.797 INFO [stderr]   --> src/main.rs:28:9
Dec 19 19:13:16.797 INFO [stderr]    |
Dec 19 19:13:16.797 INFO [stderr] 28 |         io::stdin().read_line(&mut buffer);
Dec 19 19:13:16.797 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:13:16.797 INFO [stderr]    |
Dec 19 19:13:16.797 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 19:13:16.797 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:13:16.797 INFO [stderr] 
Dec 19 19:13:16.832 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
Dec 19 19:13:17.335 INFO running `"docker" "inspect" "010ca043dc6e4b5c0317f86c3879903250a9dbd9a8cb8e663a3457132e450f9b"`
Dec 19 19:13:17.568 INFO running `"docker" "rm" "-f" "010ca043dc6e4b5c0317f86c3879903250a9dbd9a8cb8e663a3457132e450f9b"`
Dec 19 19:13:17.816 INFO [stdout] 010ca043dc6e4b5c0317f86c3879903250a9dbd9a8cb8e663a3457132e450f9b