Dec 18 01:01:59.158 INFO checking dyashkir/rust_hello against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 01:01:59.158 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 01:01:59.630 INFO [stdout] 4ec21979451afd4172c7dc5fb0dfa4c573fd8026961e4dd0da6d825ff49839da
Dec 18 01:01:59.644 INFO running `"docker" "start" "-a" "4ec21979451afd4172c7dc5fb0dfa4c573fd8026961e4dd0da6d825ff49839da"`
Dec 18 01:02:01.394 INFO [stderr]     Checking csv v0.15.0
Dec 18 01:02:02.089 INFO [stderr]     Checking hello_world v0.1.0 (/opt/crater/workdir)
Dec 18 01:02:02.312 INFO [stderr] warning: unused import: `std::io`
Dec 18 01:02:02.312 INFO [stderr]  --> src/main.rs:9:5
Dec 18 01:02:02.312 INFO [stderr]   |
Dec 18 01:02:02.312 INFO [stderr] 9 | use std::io;
Dec 18 01:02:02.312 INFO [stderr]   |     ^^^^^^^
Dec 18 01:02:02.312 INFO [stderr]   |
Dec 18 01:02:02.312 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 01:02:02.312 INFO [stderr] 
Dec 18 01:02:02.312 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 18 01:02:02.312 INFO [stderr]   --> src/main.rs:10:5
Dec 18 01:02:02.312 INFO [stderr]    |
Dec 18 01:02:02.312 INFO [stderr] 10 | use std::io::prelude::*;
Dec 18 01:02:02.312 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 18 01:02:02.312 INFO [stderr] 
Dec 18 01:02:02.312 INFO [stderr] warning: unused import: `std::fs::File`
Dec 18 01:02:02.312 INFO [stderr]   --> src/main.rs:11:5
Dec 18 01:02:02.312 INFO [stderr]    |
Dec 18 01:02:02.312 INFO [stderr] 11 | use std::fs::File;
Dec 18 01:02:02.312 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 18 01:02:02.312 INFO [stderr] 
Dec 18 01:02:02.316 INFO [stderr] warning: unused import: `std::io`
Dec 18 01:02:02.316 INFO [stderr]  --> src/main.rs:9:5
Dec 18 01:02:02.316 INFO [stderr]   |
Dec 18 01:02:02.316 INFO [stderr] 9 | use std::io;
Dec 18 01:02:02.316 INFO [stderr]   |     ^^^^^^^
Dec 18 01:02:02.316 INFO [stderr]   |
Dec 18 01:02:02.316 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 01:02:02.316 INFO [stderr] 
Dec 18 01:02:02.316 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 18 01:02:02.316 INFO [stderr]   --> src/main.rs:10:5
Dec 18 01:02:02.316 INFO [stderr]    |
Dec 18 01:02:02.316 INFO [stderr] 10 | use std::io::prelude::*;
Dec 18 01:02:02.316 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 18 01:02:02.316 INFO [stderr] 
Dec 18 01:02:02.316 INFO [stderr] warning: unused import: `std::fs::File`
Dec 18 01:02:02.316 INFO [stderr]   --> src/main.rs:11:5
Dec 18 01:02:02.316 INFO [stderr]    |
Dec 18 01:02:02.316 INFO [stderr] 11 | use std::fs::File;
Dec 18 01:02:02.316 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 18 01:02:02.316 INFO [stderr] 
Dec 18 01:02:02.364 INFO [stderr] warning: variable `v` is assigned to, but never used
Dec 18 01:02:02.364 INFO [stderr]   --> src/main.rs:49:17
Dec 18 01:02:02.364 INFO [stderr]    |
Dec 18 01:02:02.364 INFO [stderr] 49 |         let mut v = vec![0.0; 1000];
Dec 18 01:02:02.364 INFO [stderr]    |                 ^
Dec 18 01:02:02.364 INFO [stderr]    |
Dec 18 01:02:02.364 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 01:02:02.364 INFO [stderr]    = note: consider using `_v` instead
Dec 18 01:02:02.364 INFO [stderr] 
Dec 18 01:02:02.364 INFO [stderr] warning: value assigned to `v` is never read
Dec 18 01:02:02.364 INFO [stderr]   --> src/main.rs:50:9
Dec 18 01:02:02.364 INFO [stderr]    |
Dec 18 01:02:02.364 INFO [stderr] 50 |         v = record.unwrap();
Dec 18 01:02:02.364 INFO [stderr]    |         ^
Dec 18 01:02:02.364 INFO [stderr]    |
Dec 18 01:02:02.364 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 18 01:02:02.364 INFO [stderr] 
Dec 18 01:02:02.364 INFO [stderr] warning: variable `v` is assigned to, but never used
Dec 18 01:02:02.365 INFO [stderr]   --> src/main.rs:49:17
Dec 18 01:02:02.365 INFO [stderr]    |
Dec 18 01:02:02.365 INFO [stderr] 49 |         let mut v = vec![0.0; 1000];
Dec 18 01:02:02.365 INFO [stderr]    |                 ^
Dec 18 01:02:02.365 INFO [stderr]    |
Dec 18 01:02:02.365 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 01:02:02.365 INFO [stderr]    = note: consider using `_v` instead
Dec 18 01:02:02.365 INFO [stderr] 
Dec 18 01:02:02.365 INFO [stderr] warning: value assigned to `v` is never read
Dec 18 01:02:02.365 INFO [stderr]   --> src/main.rs:50:9
Dec 18 01:02:02.365 INFO [stderr]    |
Dec 18 01:02:02.365 INFO [stderr] 50 |         v = record.unwrap();
Dec 18 01:02:02.365 INFO [stderr]    |         ^
Dec 18 01:02:02.365 INFO [stderr]    |
Dec 18 01:02:02.365 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 18 01:02:02.365 INFO [stderr] 
Dec 18 01:02:02.419 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
Dec 18 01:02:03.172 INFO running `"docker" "inspect" "4ec21979451afd4172c7dc5fb0dfa4c573fd8026961e4dd0da6d825ff49839da"`
Dec 18 01:02:03.568 INFO running `"docker" "rm" "-f" "4ec21979451afd4172c7dc5fb0dfa4c573fd8026961e4dd0da6d825ff49839da"`
Dec 18 01:02:03.844 INFO [stdout] 4ec21979451afd4172c7dc5fb0dfa4c573fd8026961e4dd0da6d825ff49839da