Oct 12 23:50:20.874 INFO checking cemozerr/Rust-Cash-Register against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 23:50:20.876 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-3/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-3/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 12 23:50:21.297 INFO blam! b10f202d54712c64044945c9d8c8090fd18c318478e6abadec1dc6ff525cfa0a
Oct 12 23:50:21.299 INFO running `"docker" "start" "-a" "b10f202d54712c64044945c9d8c8090fd18c318478e6abadec1dc6ff525cfa0a"`
Oct 12 23:50:22.753 INFO kablam! usermod: no changes
Oct 12 23:50:22.836 INFO kablam!     Checking cash_register v0.1.0 (/source)
Oct 12 23:50:23.684 INFO kablam! warning: unused import: `Read`
Oct 12 23:50:23.684 INFO kablam!  --> src/main.rs:5:21
Oct 12 23:50:23.685 INFO kablam!   |
Oct 12 23:50:23.685 INFO kablam! 5 | use std::io::{self, Read};
Oct 12 23:50:23.685 INFO kablam!   |                     ^^^^
Oct 12 23:50:23.685 INFO kablam!   |
Oct 12 23:50:23.686 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 23:50:23.686 INFO kablam! 
Oct 12 23:50:23.832 INFO kablam! warning: variable does not need to be mutable
Oct 12 23:50:23.832 INFO kablam!   --> src/main.rs:80:13
Oct 12 23:50:23.832 INFO kablam!    |
Oct 12 23:50:23.832 INFO kablam! 80 |         let mut new_receipt = Receipt{
Oct 12 23:50:23.832 INFO kablam!    |             ----^^^^^^^^^^^
Oct 12 23:50:23.832 INFO kablam!    |             |
Oct 12 23:50:23.832 INFO kablam!    |             help: remove this `mut`
Oct 12 23:50:23.832 INFO kablam!    |
Oct 12 23:50:23.848 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 23:50:23.848 INFO kablam! 
Oct 12 23:50:23.880 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 12 23:50:23.880 INFO kablam!   --> src/main.rs:28:9
Oct 12 23:50:23.880 INFO kablam!    |
Oct 12 23:50:23.880 INFO kablam! 28 |         io::stdin().read_line(&mut buffer);
Oct 12 23:50:23.880 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:50:23.880 INFO kablam!    |
Oct 12 23:50:23.880 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 12 23:50:23.880 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 12 23:50:23.880 INFO kablam! 
Oct 12 23:50:23.980 INFO kablam! warning: unused import: `Read`
Oct 12 23:50:23.980 INFO kablam!  --> src/main.rs:5:21
Oct 12 23:50:23.980 INFO kablam!   |
Oct 12 23:50:23.980 INFO kablam! 5 | use std::io::{self, Read};
Oct 12 23:50:23.980 INFO kablam!   |                     ^^^^
Oct 12 23:50:23.980 INFO kablam!   |
Oct 12 23:50:23.980 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 12 23:50:23.980 INFO kablam! 
Oct 12 23:50:24.076 INFO kablam! warning: variable does not need to be mutable
Oct 12 23:50:24.076 INFO kablam!   --> src/main.rs:80:13
Oct 12 23:50:24.076 INFO kablam!    |
Oct 12 23:50:24.076 INFO kablam! 80 |         let mut new_receipt = Receipt{
Oct 12 23:50:24.076 INFO kablam!    |             ----^^^^^^^^^^^
Oct 12 23:50:24.076 INFO kablam!    |             |
Oct 12 23:50:24.076 INFO kablam!    |             help: remove this `mut`
Oct 12 23:50:24.076 INFO kablam!    |
Oct 12 23:50:24.076 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 23:50:24.076 INFO kablam! 
Oct 12 23:50:24.108 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 12 23:50:24.108 INFO kablam!   --> src/main.rs:28:9
Oct 12 23:50:24.108 INFO kablam!    |
Oct 12 23:50:24.108 INFO kablam! 28 |         io::stdin().read_line(&mut buffer);
Oct 12 23:50:24.108 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 23:50:24.108 INFO kablam!    |
Oct 12 23:50:24.108 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 12 23:50:24.108 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 12 23:50:24.108 INFO kablam! 
Oct 12 23:50:24.125 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.33s
Oct 12 23:50:24.128 INFO kablam! su: No module specific data is present
Oct 12 23:50:25.198 INFO running `"docker" "rm" "-f" "b10f202d54712c64044945c9d8c8090fd18c318478e6abadec1dc6ff525cfa0a"`
Oct 12 23:50:25.572 INFO blam! b10f202d54712c64044945c9d8c8090fd18c318478e6abadec1dc6ff525cfa0a