[INFO] updating cached repository Hand-of-Cthulhu/quiz_file_creator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Hand-of-Cthulhu/quiz_file_creator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Hand-of-Cthulhu/quiz_file_creator" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/Hand-of-Cthulhu/quiz_file_creator"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/Hand-of-Cthulhu/quiz_file_creator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Hand-of-Cthulhu/quiz_file_creator" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/Hand-of-Cthulhu/quiz_file_creator"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/Hand-of-Cthulhu/quiz_file_creator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b157581b3c5d4314f1bf8afacd4951ba3f10cf78
[INFO] sha for GitHub repo Hand-of-Cthulhu/quiz_file_creator: b157581b3c5d4314f1bf8afacd4951ba3f10cf78
[INFO] validating manifest of Hand-of-Cthulhu/quiz_file_creator on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Hand-of-Cthulhu/quiz_file_creator on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Hand-of-Cthulhu/quiz_file_creator
[INFO] finished frobbing Hand-of-Cthulhu/quiz_file_creator
[INFO] frobbed toml for Hand-of-Cthulhu/quiz_file_creator written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/Hand-of-Cthulhu/quiz_file_creator/Cargo.toml
[INFO] started frobbing Hand-of-Cthulhu/quiz_file_creator
[INFO] finished frobbing Hand-of-Cthulhu/quiz_file_creator
[INFO] frobbed toml for Hand-of-Cthulhu/quiz_file_creator written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/Hand-of-Cthulhu/quiz_file_creator/Cargo.toml
[INFO] crate Hand-of-Cthulhu/quiz_file_creator already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Hand-of-Cthulhu/quiz_file_creator against master#9f06855064ed06a50c496577b21ca50f92a2e67d for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-3/master#9f06855064ed06a50c496577b21ca50f92a2e67d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/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" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 147fb972cf17e9df2fdfab6637cbabb3ebfea2c8e950f549cb2c64d796b500fe
[INFO] running `"docker" "start" "-a" "147fb972cf17e9df2fdfab6637cbabb3ebfea2c8e950f549cb2c64d796b500fe"`
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking quiz_file_creator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `regex::Regex`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use regex::Regex;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `regex::Regex`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use regex::Regex;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fs::copy(&file_path, file_path.as_ref().to_str().unwrap().to_owned() + ".bak");//.expect("File backup failed");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fs::copy(&file_path, file_path.as_ref().to_str().unwrap().to_owned() + ".bak");//.expect("File backup failed");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.17s
[INFO] running `"docker" "inspect" "147fb972cf17e9df2fdfab6637cbabb3ebfea2c8e950f549cb2c64d796b500fe"`
[INFO] running `"docker" "rm" "-f" "147fb972cf17e9df2fdfab6637cbabb3ebfea2c8e950f549cb2c64d796b500fe"`
[INFO] [stdout] 147fb972cf17e9df2fdfab6637cbabb3ebfea2c8e950f549cb2c64d796b500fe