Dec 19 17:40:40.819 INFO checking dyashkir/rust_hello against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 17:40:40.819 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 17:40:41.233 INFO [stdout] 0cd4a9048ae5d1d6ae2393be9617a26f3295ead8a94c1824a14a724a560b7d35
Dec 19 17:40:41.235 INFO running `"docker" "start" "-a" "0cd4a9048ae5d1d6ae2393be9617a26f3295ead8a94c1824a14a724a560b7d35"`
Dec 19 17:40:42.967 INFO [stderr]     Checking csv v0.15.0
Dec 19 17:40:43.805 INFO [stderr]     Checking hello_world v0.1.0 (/opt/crater/workdir)
Dec 19 17:40:44.038 INFO [stderr] warning: unused import: `std::io`
Dec 19 17:40:44.038 INFO [stderr]  --> src/main.rs:9:5
Dec 19 17:40:44.038 INFO [stderr]   |
Dec 19 17:40:44.038 INFO [stderr] 9 | use std::io;
Dec 19 17:40:44.038 INFO [stderr]   |     ^^^^^^^
Dec 19 17:40:44.038 INFO [stderr]   |
Dec 19 17:40:44.039 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 17:40:44.039 INFO [stderr] 
Dec 19 17:40:44.039 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 17:40:44.039 INFO [stderr]   --> src/main.rs:10:5
Dec 19 17:40:44.040 INFO [stderr]    |
Dec 19 17:40:44.040 INFO [stderr] 10 | use std::io::prelude::*;
Dec 19 17:40:44.040 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 17:40:44.040 INFO [stderr] 
Dec 19 17:40:44.041 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 17:40:44.041 INFO [stderr]   --> src/main.rs:11:5
Dec 19 17:40:44.041 INFO [stderr]    |
Dec 19 17:40:44.041 INFO [stderr] 11 | use std::fs::File;
Dec 19 17:40:44.041 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 19 17:40:44.042 INFO [stderr] 
Dec 19 17:40:44.082 INFO [stderr] warning: variable `v` is assigned to, but never used
Dec 19 17:40:44.082 INFO [stderr]   --> src/main.rs:49:17
Dec 19 17:40:44.082 INFO [stderr]    |
Dec 19 17:40:44.082 INFO [stderr] 49 |         let mut v = vec![0.0; 1000];
Dec 19 17:40:44.083 INFO [stderr]    |                 ^
Dec 19 17:40:44.083 INFO [stderr]    |
Dec 19 17:40:44.083 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 17:40:44.084 INFO [stderr]    = note: consider using `_v` instead
Dec 19 17:40:44.084 INFO [stderr] 
Dec 19 17:40:44.084 INFO [stderr] warning: value assigned to `v` is never read
Dec 19 17:40:44.084 INFO [stderr]   --> src/main.rs:50:9
Dec 19 17:40:44.085 INFO [stderr]    |
Dec 19 17:40:44.085 INFO [stderr] 50 |         v = record.unwrap();
Dec 19 17:40:44.085 INFO [stderr]    |         ^
Dec 19 17:40:44.086 INFO [stderr]    |
Dec 19 17:40:44.086 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 19 17:40:44.086 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 17:40:44.086 INFO [stderr] 
Dec 19 17:40:44.194 INFO [stderr] warning: unused import: `std::io`
Dec 19 17:40:44.194 INFO [stderr]  --> src/main.rs:9:5
Dec 19 17:40:44.194 INFO [stderr]   |
Dec 19 17:40:44.194 INFO [stderr] 9 | use std::io;
Dec 19 17:40:44.195 INFO [stderr]   |     ^^^^^^^
Dec 19 17:40:44.195 INFO [stderr]   |
Dec 19 17:40:44.195 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 17:40:44.195 INFO [stderr] 
Dec 19 17:40:44.195 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 19 17:40:44.196 INFO [stderr]   --> src/main.rs:10:5
Dec 19 17:40:44.196 INFO [stderr]    |
Dec 19 17:40:44.196 INFO [stderr] 10 | use std::io::prelude::*;
Dec 19 17:40:44.196 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 17:40:44.197 INFO [stderr] 
Dec 19 17:40:44.197 INFO [stderr] warning: unused import: `std::fs::File`
Dec 19 17:40:44.197 INFO [stderr]   --> src/main.rs:11:5
Dec 19 17:40:44.197 INFO [stderr]    |
Dec 19 17:40:44.198 INFO [stderr] 11 | use std::fs::File;
Dec 19 17:40:44.198 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 19 17:40:44.198 INFO [stderr] 
Dec 19 17:40:44.238 INFO [stderr] warning: variable `v` is assigned to, but never used
Dec 19 17:40:44.238 INFO [stderr]   --> src/main.rs:49:17
Dec 19 17:40:44.238 INFO [stderr]    |
Dec 19 17:40:44.238 INFO [stderr] 49 |         let mut v = vec![0.0; 1000];
Dec 19 17:40:44.239 INFO [stderr]    |                 ^
Dec 19 17:40:44.239 INFO [stderr]    |
Dec 19 17:40:44.239 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 17:40:44.239 INFO [stderr]    = note: consider using `_v` instead
Dec 19 17:40:44.239 INFO [stderr] 
Dec 19 17:40:44.240 INFO [stderr] warning: value assigned to `v` is never read
Dec 19 17:40:44.240 INFO [stderr]   --> src/main.rs:50:9
Dec 19 17:40:44.240 INFO [stderr]    |
Dec 19 17:40:44.240 INFO [stderr] 50 |         v = record.unwrap();
Dec 19 17:40:44.240 INFO [stderr]    |         ^
Dec 19 17:40:44.240 INFO [stderr]    |
Dec 19 17:40:44.240 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 19 17:40:44.240 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 17:40:44.240 INFO [stderr] 
Dec 19 17:40:44.274 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
Dec 19 17:40:45.128 INFO running `"docker" "inspect" "0cd4a9048ae5d1d6ae2393be9617a26f3295ead8a94c1824a14a724a560b7d35"`
Dec 19 17:40:45.447 INFO running `"docker" "rm" "-f" "0cd4a9048ae5d1d6ae2393be9617a26f3295ead8a94c1824a14a724a560b7d35"`
Dec 19 17:40:45.706 INFO [stdout] 0cd4a9048ae5d1d6ae2393be9617a26f3295ead8a94c1824a14a724a560b7d35