Dec 19 17:40:40.097 INFO checking dyashkir/rust_hello against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 17:40:40.097 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/dyashkir/rust_hello:/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 17:40:40.576 INFO [stdout] 3030251ac44308c9717ba55d43593b678416c0a94e6b1596a05057cef6d96f81
Dec 19 17:40:40.576 INFO running `"docker" "start" "-a" "3030251ac44308c9717ba55d43593b678416c0a94e6b1596a05057cef6d96f81"`
Dec 19 17:40:41.856 INFO [stderr]     Checking hello_world v0.1.0 (/opt/crater/workdir)
Dec 19 17:40:42.240 INFO [stderr] warning: unused import: `std::io`
Dec 19 17:40:42.240 INFO [stderr]  --> src/main.rs:9:5
Dec 19 17:40:42.240 INFO [stderr]   |
Dec 19 17:40:42.240 INFO [stderr] 9 | use std::io;
Dec 19 17:40:42.240 INFO [stderr]   |     ^^^^^^^
Dec 19 17:40:42.240 INFO [stderr]   |
Dec 19 17:40:42.240 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 17:40:42.240 INFO [stderr] 
Dec 19 17:40:42.240 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 17:40:42.240 INFO [stderr]   --> src/main.rs:10:5
Dec 19 17:40:42.240 INFO [stderr]    |
Dec 19 17:40:42.240 INFO [stderr] 10 | use std::io::prelude::*;
Dec 19 17:40:42.240 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 17:40:42.240 INFO [stderr] 
Dec 19 17:40:42.240 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 17:40:42.240 INFO [stderr]   --> src/main.rs:11:5
Dec 19 17:40:42.240 INFO [stderr]    |
Dec 19 17:40:42.240 INFO [stderr] 11 | use std::fs::File;
Dec 19 17:40:42.240 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 19 17:40:42.240 INFO [stderr] 
Dec 19 17:40:42.260 INFO [stderr] warning: unused import: `std::io`
Dec 19 17:40:42.260 INFO [stderr]  --> src/main.rs:9:5
Dec 19 17:40:42.260 INFO [stderr]   |
Dec 19 17:40:42.260 INFO [stderr] 9 | use std::io;
Dec 19 17:40:42.260 INFO [stderr]   |     ^^^^^^^
Dec 19 17:40:42.260 INFO [stderr]   |
Dec 19 17:40:42.260 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 17:40:42.260 INFO [stderr] 
Dec 19 17:40:42.260 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 17:40:42.260 INFO [stderr]   --> src/main.rs:10:5
Dec 19 17:40:42.260 INFO [stderr]    |
Dec 19 17:40:42.260 INFO [stderr] 10 | use std::io::prelude::*;
Dec 19 17:40:42.260 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 17:40:42.260 INFO [stderr] 
Dec 19 17:40:42.260 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 17:40:42.260 INFO [stderr]   --> src/main.rs:11:5
Dec 19 17:40:42.260 INFO [stderr]    |
Dec 19 17:40:42.260 INFO [stderr] 11 | use std::fs::File;
Dec 19 17:40:42.260 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 19 17:40:42.260 INFO [stderr] 
Dec 19 17:40:42.308 INFO [stderr] warning: variable `v` is assigned to, but never used
Dec 19 17:40:42.308 INFO [stderr]   --> src/main.rs:49:17
Dec 19 17:40:42.308 INFO [stderr]    |
Dec 19 17:40:42.308 INFO [stderr] 49 |         let mut v = vec![0.0; 1000];
Dec 19 17:40:42.308 INFO [stderr]    |                 ^
Dec 19 17:40:42.308 INFO [stderr]    |
Dec 19 17:40:42.308 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 17:40:42.312 INFO [stderr]    = note: consider using `_v` instead
Dec 19 17:40:42.312 INFO [stderr] 
Dec 19 17:40:42.312 INFO [stderr] warning: value assigned to `v` is never read
Dec 19 17:40:42.312 INFO [stderr]   --> src/main.rs:50:9
Dec 19 17:40:42.312 INFO [stderr]    |
Dec 19 17:40:42.312 INFO [stderr] 50 |         v = record.unwrap();
Dec 19 17:40:42.312 INFO [stderr]    |         ^
Dec 19 17:40:42.312 INFO [stderr]    |
Dec 19 17:40:42.312 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 19 17:40:42.312 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 17:40:42.312 INFO [stderr] 
Dec 19 17:40:42.320 INFO [stderr] warning: variable `v` is assigned to, but never used
Dec 19 17:40:42.320 INFO [stderr]   --> src/main.rs:49:17
Dec 19 17:40:42.320 INFO [stderr]    |
Dec 19 17:40:42.320 INFO [stderr] 49 |         let mut v = vec![0.0; 1000];
Dec 19 17:40:42.320 INFO [stderr]    |                 ^
Dec 19 17:40:42.320 INFO [stderr]    |
Dec 19 17:40:42.320 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 17:40:42.320 INFO [stderr]    = note: consider using `_v` instead
Dec 19 17:40:42.320 INFO [stderr] 
Dec 19 17:40:42.320 INFO [stderr] warning: value assigned to `v` is never read
Dec 19 17:40:42.320 INFO [stderr]   --> src/main.rs:50:9
Dec 19 17:40:42.320 INFO [stderr]    |
Dec 19 17:40:42.320 INFO [stderr] 50 |         v = record.unwrap();
Dec 19 17:40:42.320 INFO [stderr]    |         ^
Dec 19 17:40:42.320 INFO [stderr]    |
Dec 19 17:40:42.320 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 19 17:40:42.320 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 17:40:42.320 INFO [stderr] 
Dec 19 17:40:42.388 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
Dec 19 17:40:43.444 INFO running `"docker" "inspect" "3030251ac44308c9717ba55d43593b678416c0a94e6b1596a05057cef6d96f81"`
Dec 19 17:40:43.748 INFO running `"docker" "rm" "-f" "3030251ac44308c9717ba55d43593b678416c0a94e6b1596a05057cef6d96f81"`
Dec 19 17:40:44.132 INFO [stdout] 3030251ac44308c9717ba55d43593b678416c0a94e6b1596a05057cef6d96f81