Nov 01 07:18:19.957 INFO checking cemozerr/Rust-Cash-Register against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 07:18:19.957 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-4/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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"`
Nov 01 07:18:20.401 INFO blam! a94c73586533a00448de8587039e110dcd8e8cdf76e87bc9ce3e92c1326840af
Nov 01 07:18:20.424 INFO running `"docker" "start" "-a" "a94c73586533a00448de8587039e110dcd8e8cdf76e87bc9ce3e92c1326840af"`
Nov 01 07:18:21.560 INFO kablam! usermod: no changes
Nov 01 07:18:21.688 INFO kablam!    Compiling serde v1.0.74
Nov 01 07:18:34.282 INFO kablam!     Checking serde_json v1.0.26
Nov 01 07:18:37.048 INFO kablam!     Checking cash_register v0.1.0 (/source)
Nov 01 07:18:38.040 INFO kablam! warning: unused import: `Read`
Nov 01 07:18:38.040 INFO kablam!  --> src/main.rs:5:21
Nov 01 07:18:38.040 INFO kablam!   |
Nov 01 07:18:38.040 INFO kablam! 5 | use std::io::{self, Read};
Nov 01 07:18:38.040 INFO kablam!   |                     ^^^^
Nov 01 07:18:38.040 INFO kablam!   |
Nov 01 07:18:38.040 INFO kablam!   = note: #[warn(unused_imports)] on by default
Nov 01 07:18:38.040 INFO kablam! 
Nov 01 07:18:38.165 INFO kablam! warning: unused import: `Read`
Nov 01 07:18:38.166 INFO kablam!  --> src/main.rs:5:21
Nov 01 07:18:38.166 INFO kablam!   |
Nov 01 07:18:38.166 INFO kablam! 5 | use std::io::{self, Read};
Nov 01 07:18:38.166 INFO kablam!   |                     ^^^^
Nov 01 07:18:38.167 INFO kablam!   |
Nov 01 07:18:38.167 INFO kablam!   = note: #[warn(unused_imports)] on by default
Nov 01 07:18:38.167 INFO kablam! 
Nov 01 07:18:38.268 INFO kablam! warning: variable does not need to be mutable
Nov 01 07:18:38.268 INFO kablam!   --> src/main.rs:80:13
Nov 01 07:18:38.269 INFO kablam!    |
Nov 01 07:18:38.269 INFO kablam! 80 |         let mut new_receipt = Receipt{
Nov 01 07:18:38.270 INFO kablam!    |             ----^^^^^^^^^^^
Nov 01 07:18:38.270 INFO kablam!    |             |
Nov 01 07:18:38.270 INFO kablam!    |             help: remove this `mut`
Nov 01 07:18:38.270 INFO kablam!    |
Nov 01 07:18:38.270 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 07:18:38.270 INFO kablam! 
Nov 01 07:18:38.270 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 01 07:18:38.270 INFO kablam!   --> src/main.rs:28:9
Nov 01 07:18:38.270 INFO kablam!    |
Nov 01 07:18:38.276 INFO kablam! 28 |         io::stdin().read_line(&mut buffer);
Nov 01 07:18:38.276 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 07:18:38.276 INFO kablam!    |
Nov 01 07:18:38.276 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 01 07:18:38.276 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 07:18:38.276 INFO kablam! 
Nov 01 07:18:38.372 INFO kablam! warning: variable does not need to be mutable
Nov 01 07:18:38.373 INFO kablam!   --> src/main.rs:80:13
Nov 01 07:18:38.373 INFO kablam!    |
Nov 01 07:18:38.374 INFO kablam! 80 |         let mut new_receipt = Receipt{
Nov 01 07:18:38.376 INFO kablam!    |             ----^^^^^^^^^^^
Nov 01 07:18:38.376 INFO kablam!    |             |
Nov 01 07:18:38.376 INFO kablam!    |             help: remove this `mut`
Nov 01 07:18:38.376 INFO kablam!    |
Nov 01 07:18:38.376 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 07:18:38.376 INFO kablam! 
Nov 01 07:18:38.384 INFO kablam! warning: unused `std::result::Result` that must be used
Nov 01 07:18:38.384 INFO kablam!   --> src/main.rs:28:9
Nov 01 07:18:38.384 INFO kablam!    |
Nov 01 07:18:38.384 INFO kablam! 28 |         io::stdin().read_line(&mut buffer);
Nov 01 07:18:38.384 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 07:18:38.385 INFO kablam!    |
Nov 01 07:18:38.385 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Nov 01 07:18:38.386 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Nov 01 07:18:38.386 INFO kablam! 
Nov 01 07:18:38.449 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 16.86s
Nov 01 07:18:38.455 INFO kablam! su: No module specific data is present
Nov 01 07:18:39.468 INFO running `"docker" "rm" "-f" "a94c73586533a00448de8587039e110dcd8e8cdf76e87bc9ce3e92c1326840af"`
Nov 01 07:18:39.756 INFO blam! a94c73586533a00448de8587039e110dcd8e8cdf76e87bc9ce3e92c1326840af