Dec 12 02:31:54.901 INFO checking Hand-of-Cthulhu/quiz_file_creator against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 02:31:54.902 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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"`
Dec 12 02:31:55.390 INFO [stdout] ab0eed81aabc20a34f219967bb06262fc396f15e67723bc878e9ec48c1e2fc00
Dec 12 02:31:55.391 INFO running `"docker" "start" "-a" "ab0eed81aabc20a34f219967bb06262fc396f15e67723bc878e9ec48c1e2fc00"`
Dec 12 02:31:56.816 INFO [stderr] usermod: no changes
Dec 12 02:31:56.946 INFO [stderr]     Checking nix v0.5.1
Dec 12 02:32:00.072 INFO [stderr]     Checking rustyline v1.0.0
Dec 12 02:32:01.138 INFO [stderr]     Checking quiz_file_creator v0.1.0 (/source)
Dec 12 02:32:03.568 INFO [stderr] warning: unused import: `regex::Regex`
Dec 12 02:32:03.568 INFO [stderr]  --> src/main.rs:6:5
Dec 12 02:32:03.568 INFO [stderr]   |
Dec 12 02:32:03.568 INFO [stderr] 6 | use regex::Regex;
Dec 12 02:32:03.568 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 12 02:32:03.568 INFO [stderr]   |
Dec 12 02:32:03.568 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 02:32:03.568 INFO [stderr] 
Dec 12 02:32:03.568 INFO [stderr] warning: unused import: `std::io`
Dec 12 02:32:03.568 INFO [stderr]  --> src/main.rs:9:5
Dec 12 02:32:03.568 INFO [stderr]   |
Dec 12 02:32:03.568 INFO [stderr] 9 | use std::io;
Dec 12 02:32:03.568 INFO [stderr]   |     ^^^^^^^
Dec 12 02:32:03.568 INFO [stderr] 
Dec 12 02:32:03.675 INFO [stderr] warning: unused import: `regex::Regex`
Dec 12 02:32:03.675 INFO [stderr]  --> src/main.rs:6:5
Dec 12 02:32:03.675 INFO [stderr]   |
Dec 12 02:32:03.675 INFO [stderr] 6 | use regex::Regex;
Dec 12 02:32:03.675 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 12 02:32:03.675 INFO [stderr]   |
Dec 12 02:32:03.675 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 02:32:03.675 INFO [stderr] 
Dec 12 02:32:03.675 INFO [stderr] warning: unused import: `std::io`
Dec 12 02:32:03.675 INFO [stderr]  --> src/main.rs:9:5
Dec 12 02:32:03.675 INFO [stderr]   |
Dec 12 02:32:03.675 INFO [stderr] 9 | use std::io;
Dec 12 02:32:03.675 INFO [stderr]   |     ^^^^^^^
Dec 12 02:32:03.675 INFO [stderr] 
Dec 12 02:32:03.876 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 02:32:03.876 INFO [stderr]   --> src/main.rs:61:5
Dec 12 02:32:03.876 INFO [stderr]    |
Dec 12 02:32:03.876 INFO [stderr] 61 |     fs::copy(&file_path, file_path.as_ref().to_str().unwrap().to_owned() + ".bak");//.expect("File backup failed");
Dec 12 02:32:03.876 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 02:32:03.876 INFO [stderr]    |
Dec 12 02:32:03.876 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 02:32:03.876 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 02:32:03.876 INFO [stderr] 
Dec 12 02:32:03.908 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 02:32:03.908 INFO [stderr]   --> src/main.rs:61:5
Dec 12 02:32:03.908 INFO [stderr]    |
Dec 12 02:32:03.908 INFO [stderr] 61 |     fs::copy(&file_path, file_path.as_ref().to_str().unwrap().to_owned() + ".bak");//.expect("File backup failed");
Dec 12 02:32:03.908 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 02:32:03.908 INFO [stderr]    |
Dec 12 02:32:03.908 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 02:32:03.908 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 02:32:03.908 INFO [stderr] 
Dec 12 02:32:03.944 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.09s
Dec 12 02:32:03.948 INFO [stderr] su: No module specific data is present
Dec 12 02:32:04.998 INFO running `"docker" "inspect" "ab0eed81aabc20a34f219967bb06262fc396f15e67723bc878e9ec48c1e2fc00"`
Dec 12 02:32:05.408 INFO running `"docker" "rm" "-f" "ab0eed81aabc20a34f219967bb06262fc396f15e67723bc878e9ec48c1e2fc00"`
Dec 12 02:32:05.719 INFO [stdout] ab0eed81aabc20a34f219967bb06262fc396f15e67723bc878e9ec48c1e2fc00