Dec 19 19:13:14.113 INFO checking cemozerr/Rust-Cash-Register against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 19:13:14.113 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 19:13:14.590 INFO [stdout] be4dfd03ce37072c7e12524f321ade6fa8ad415cfbb154ce14bd7aac496b8808
Dec 19 19:13:14.592 INFO running `"docker" "start" "-a" "be4dfd03ce37072c7e12524f321ade6fa8ad415cfbb154ce14bd7aac496b8808"`
Dec 19 19:13:15.809 INFO [stderr]     Checking serde_json v1.0.26
Dec 19 19:13:18.003 INFO [stderr]     Checking cash_register v0.1.0 (/opt/crater/workdir)
Dec 19 19:13:18.212 INFO [stderr] warning: unused import: `Read`
Dec 19 19:13:18.212 INFO [stderr]  --> src/main.rs:5:21
Dec 19 19:13:18.212 INFO [stderr]   |
Dec 19 19:13:18.212 INFO [stderr] 5 | use std::io::{self, Read};
Dec 19 19:13:18.212 INFO [stderr]   |                     ^^^^
Dec 19 19:13:18.212 INFO [stderr]   |
Dec 19 19:13:18.212 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 19:13:18.212 INFO [stderr] 
Dec 19 19:13:18.291 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:13:18.291 INFO [stderr]   --> src/main.rs:80:13
Dec 19 19:13:18.291 INFO [stderr]    |
Dec 19 19:13:18.291 INFO [stderr] 80 |         let mut new_receipt = Receipt{
Dec 19 19:13:18.291 INFO [stderr]    |             ----^^^^^^^^^^^
Dec 19 19:13:18.291 INFO [stderr]    |             |
Dec 19 19:13:18.291 INFO [stderr]    |             help: remove this `mut`
Dec 19 19:13:18.291 INFO [stderr]    |
Dec 19 19:13:18.291 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 19:13:18.291 INFO [stderr] 
Dec 19 19:13:18.291 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:13:18.291 INFO [stderr]   --> src/main.rs:28:9
Dec 19 19:13:18.291 INFO [stderr]    |
Dec 19 19:13:18.291 INFO [stderr] 28 |         io::stdin().read_line(&mut buffer);
Dec 19 19:13:18.291 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:13:18.291 INFO [stderr]    |
Dec 19 19:13:18.291 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 19:13:18.291 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:13:18.291 INFO [stderr] 
Dec 19 19:13:18.358 INFO [stderr] warning: unused import: `Read`
Dec 19 19:13:18.358 INFO [stderr]  --> src/main.rs:5:21
Dec 19 19:13:18.358 INFO [stderr]   |
Dec 19 19:13:18.358 INFO [stderr] 5 | use std::io::{self, Read};
Dec 19 19:13:18.358 INFO [stderr]   |                     ^^^^
Dec 19 19:13:18.358 INFO [stderr]   |
Dec 19 19:13:18.358 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 19:13:18.358 INFO [stderr] 
Dec 19 19:13:18.439 INFO [stderr] warning: variable does not need to be mutable
Dec 19 19:13:18.439 INFO [stderr]   --> src/main.rs:80:13
Dec 19 19:13:18.439 INFO [stderr]    |
Dec 19 19:13:18.439 INFO [stderr] 80 |         let mut new_receipt = Receipt{
Dec 19 19:13:18.439 INFO [stderr]    |             ----^^^^^^^^^^^
Dec 19 19:13:18.439 INFO [stderr]    |             |
Dec 19 19:13:18.439 INFO [stderr]    |             help: remove this `mut`
Dec 19 19:13:18.439 INFO [stderr]    |
Dec 19 19:13:18.439 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 19:13:18.439 INFO [stderr] 
Dec 19 19:13:18.440 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:13:18.440 INFO [stderr]   --> src/main.rs:28:9
Dec 19 19:13:18.440 INFO [stderr]    |
Dec 19 19:13:18.440 INFO [stderr] 28 |         io::stdin().read_line(&mut buffer);
Dec 19 19:13:18.440 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:13:18.440 INFO [stderr]    |
Dec 19 19:13:18.440 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 19:13:18.440 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:13:18.440 INFO [stderr] 
Dec 19 19:13:18.477 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.73s
Dec 19 19:13:19.314 INFO running `"docker" "inspect" "be4dfd03ce37072c7e12524f321ade6fa8ad415cfbb154ce14bd7aac496b8808"`
Dec 19 19:13:19.670 INFO running `"docker" "rm" "-f" "be4dfd03ce37072c7e12524f321ade6fa8ad415cfbb154ce14bd7aac496b8808"`
Dec 19 19:13:19.977 INFO [stdout] be4dfd03ce37072c7e12524f321ade6fa8ad415cfbb154ce14bd7aac496b8808