Dec 18 07:23:19.386 INFO checking Hand-of-Cthulhu/quiz_file_creator against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 07:23:19.386 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/Hand-of-Cthulhu/quiz_file_creator:/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 07:23:19.768 INFO [stdout] 38e36157da992c10847d96d95510e8d6fb991d968fa0d87f3228d5513f1a9c3f
Dec 18 07:23:19.770 INFO running `"docker" "start" "-a" "38e36157da992c10847d96d95510e8d6fb991d968fa0d87f3228d5513f1a9c3f"`
Dec 18 07:23:21.448 INFO [stderr]     Checking nix v0.5.1
Dec 18 07:23:24.552 INFO [stderr]     Checking rustyline v1.0.0
Dec 18 07:23:25.404 INFO [stderr]     Checking quiz_file_creator v0.1.0 (/opt/crater/workdir)
Dec 18 07:23:26.120 INFO [stderr] warning: unused import: `regex::Regex`
Dec 18 07:23:26.120 INFO [stderr]  --> src/main.rs:6:5
Dec 18 07:23:26.120 INFO [stderr]   |
Dec 18 07:23:26.120 INFO [stderr] 6 | use regex::Regex;
Dec 18 07:23:26.120 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 18 07:23:26.120 INFO [stderr]   |
Dec 18 07:23:26.120 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 07:23:26.120 INFO [stderr] 
Dec 18 07:23:26.120 INFO [stderr] warning: unused import: `std::io`
Dec 18 07:23:26.120 INFO [stderr]  --> src/main.rs:9:5
Dec 18 07:23:26.120 INFO [stderr]   |
Dec 18 07:23:26.120 INFO [stderr] 9 | use std::io;
Dec 18 07:23:26.120 INFO [stderr]   |     ^^^^^^^
Dec 18 07:23:26.120 INFO [stderr] 
Dec 18 07:23:26.139 INFO [stderr] warning: unused import: `regex::Regex`
Dec 18 07:23:26.140 INFO [stderr]  --> src/main.rs:6:5
Dec 18 07:23:26.140 INFO [stderr]   |
Dec 18 07:23:26.140 INFO [stderr] 6 | use regex::Regex;
Dec 18 07:23:26.140 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 18 07:23:26.140 INFO [stderr]   |
Dec 18 07:23:26.140 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 07:23:26.141 INFO [stderr] 
Dec 18 07:23:26.142 INFO [stderr] warning: unused import: `std::io`
Dec 18 07:23:26.142 INFO [stderr]  --> src/main.rs:9:5
Dec 18 07:23:26.142 INFO [stderr]   |
Dec 18 07:23:26.142 INFO [stderr] 9 | use std::io;
Dec 18 07:23:26.142 INFO [stderr]   |     ^^^^^^^
Dec 18 07:23:26.142 INFO [stderr] 
Dec 18 07:23:26.419 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 07:23:26.419 INFO [stderr]   --> src/main.rs:61:5
Dec 18 07:23:26.419 INFO [stderr]    |
Dec 18 07:23:26.419 INFO [stderr] 61 |     fs::copy(&file_path, file_path.as_ref().to_str().unwrap().to_owned() + ".bak");//.expect("File backup failed");
Dec 18 07:23:26.419 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:23:26.419 INFO [stderr]    |
Dec 18 07:23:26.419 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 07:23:26.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 07:23:26.420 INFO [stderr] 
Dec 18 07:23:26.451 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 07:23:26.451 INFO [stderr]   --> src/main.rs:61:5
Dec 18 07:23:26.451 INFO [stderr]    |
Dec 18 07:23:26.451 INFO [stderr] 61 |     fs::copy(&file_path, file_path.as_ref().to_str().unwrap().to_owned() + ".bak");//.expect("File backup failed");
Dec 18 07:23:26.451 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:23:26.451 INFO [stderr]    |
Dec 18 07:23:26.451 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 07:23:26.452 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 07:23:26.452 INFO [stderr] 
Dec 18 07:23:26.484 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.15s
Dec 18 07:23:27.312 INFO running `"docker" "inspect" "38e36157da992c10847d96d95510e8d6fb991d968fa0d87f3228d5513f1a9c3f"`
Dec 18 07:23:27.760 INFO running `"docker" "rm" "-f" "38e36157da992c10847d96d95510e8d6fb991d968fa0d87f3228d5513f1a9c3f"`
Dec 18 07:23:28.016 INFO [stdout] 38e36157da992c10847d96d95510e8d6fb991d968fa0d87f3228d5513f1a9c3f