Dec 04 21:09:54.472 INFO checking cemozerr/Rust-Cash-Register against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 21:09:54.472 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-5/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 21:09:55.116 INFO [stdout] 6833f928068ee56ee94a71dd1ce0d160302a3dad3d3fbbf0764437d8dc7f46e3
Dec 04 21:09:55.118 INFO running `"docker" "start" "-a" "6833f928068ee56ee94a71dd1ce0d160302a3dad3d3fbbf0764437d8dc7f46e3"`
Dec 04 21:09:56.503 INFO [stderr] usermod: no changes
Dec 04 21:09:56.639 INFO [stderr]     Checking cash_register v0.1.0 (/source)
Dec 04 21:09:57.343 INFO [stderr] warning: unused import: `Read`
Dec 04 21:09:57.343 INFO [stderr]  --> src/main.rs:5:21
Dec 04 21:09:57.343 INFO [stderr]   |
Dec 04 21:09:57.343 INFO [stderr] 5 | use std::io::{self, Read};
Dec 04 21:09:57.343 INFO [stderr]   |                     ^^^^
Dec 04 21:09:57.343 INFO [stderr]   |
Dec 04 21:09:57.343 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 21:09:57.343 INFO [stderr] 
Dec 04 21:09:57.434 INFO [stderr] warning: unused import: `Read`
Dec 04 21:09:57.434 INFO [stderr]  --> src/main.rs:5:21
Dec 04 21:09:57.434 INFO [stderr]   |
Dec 04 21:09:57.434 INFO [stderr] 5 | use std::io::{self, Read};
Dec 04 21:09:57.434 INFO [stderr]   |                     ^^^^
Dec 04 21:09:57.434 INFO [stderr]   |
Dec 04 21:09:57.434 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 21:09:57.434 INFO [stderr] 
Dec 04 21:09:57.439 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:09:57.439 INFO [stderr]   --> src/main.rs:80:13
Dec 04 21:09:57.439 INFO [stderr]    |
Dec 04 21:09:57.439 INFO [stderr] 80 |         let mut new_receipt = Receipt{
Dec 04 21:09:57.439 INFO [stderr]    |             ----^^^^^^^^^^^
Dec 04 21:09:57.439 INFO [stderr]    |             |
Dec 04 21:09:57.439 INFO [stderr]    |             help: remove this `mut`
Dec 04 21:09:57.439 INFO [stderr]    |
Dec 04 21:09:57.439 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 21:09:57.439 INFO [stderr] 
Dec 04 21:09:57.443 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 21:09:57.443 INFO [stderr]   --> src/main.rs:28:9
Dec 04 21:09:57.443 INFO [stderr]    |
Dec 04 21:09:57.443 INFO [stderr] 28 |         io::stdin().read_line(&mut buffer);
Dec 04 21:09:57.443 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:09:57.443 INFO [stderr]    |
Dec 04 21:09:57.443 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 21:09:57.443 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 21:09:57.443 INFO [stderr] 
Dec 04 21:09:57.496 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:09:57.496 INFO [stderr]   --> src/main.rs:80:13
Dec 04 21:09:57.496 INFO [stderr]    |
Dec 04 21:09:57.496 INFO [stderr] 80 |         let mut new_receipt = Receipt{
Dec 04 21:09:57.496 INFO [stderr]    |             ----^^^^^^^^^^^
Dec 04 21:09:57.496 INFO [stderr]    |             |
Dec 04 21:09:57.496 INFO [stderr]    |             help: remove this `mut`
Dec 04 21:09:57.496 INFO [stderr]    |
Dec 04 21:09:57.496 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 21:09:57.496 INFO [stderr] 
Dec 04 21:09:57.501 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 21:09:57.501 INFO [stderr]   --> src/main.rs:28:9
Dec 04 21:09:57.501 INFO [stderr]    |
Dec 04 21:09:57.501 INFO [stderr] 28 |         io::stdin().read_line(&mut buffer);
Dec 04 21:09:57.501 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 21:09:57.501 INFO [stderr]    |
Dec 04 21:09:57.501 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 04 21:09:57.501 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 21:09:57.501 INFO [stderr] 
Dec 04 21:09:57.523 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
Dec 04 21:09:57.526 INFO [stderr] su: No module specific data is present
Dec 04 21:09:57.956 INFO running `"docker" "inspect" "6833f928068ee56ee94a71dd1ce0d160302a3dad3d3fbbf0764437d8dc7f46e3"`
Dec 04 21:09:58.144 INFO running `"docker" "rm" "-f" "6833f928068ee56ee94a71dd1ce0d160302a3dad3d3fbbf0764437d8dc7f46e3"`
Dec 04 21:09:58.347 INFO [stdout] 6833f928068ee56ee94a71dd1ce0d160302a3dad3d3fbbf0764437d8dc7f46e3