[INFO] updating cached repository frigus02/crypto-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/frigus02/crypto-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/frigus02/crypto-playground" "work/ex/pr-57609/sources/master#03acbd71c977cd63ce5f39ba9b6fe9ffd578785a/gh/frigus02/crypto-playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-57609/sources/master#03acbd71c977cd63ce5f39ba9b6fe9ffd578785a/gh/frigus02/crypto-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/frigus02/crypto-playground" "work/ex/pr-57609/sources/try#26f8d250bb3c8a85e812cf663c730ef9e0df9315/gh/frigus02/crypto-playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-57609/sources/try#26f8d250bb3c8a85e812cf663c730ef9e0df9315/gh/frigus02/crypto-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ec966bae4c9681eb558dc68586edfc05b69b04ef
[INFO] sha for GitHub repo frigus02/crypto-playground: ec966bae4c9681eb558dc68586edfc05b69b04ef
[INFO] validating manifest of frigus02/crypto-playground on toolchain master#03acbd71c977cd63ce5f39ba9b6fe9ffd578785a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+03acbd71c977cd63ce5f39ba9b6fe9ffd578785a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of frigus02/crypto-playground on toolchain try#26f8d250bb3c8a85e812cf663c730ef9e0df9315
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+26f8d250bb3c8a85e812cf663c730ef9e0df9315-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing frigus02/crypto-playground
[INFO] finished frobbing frigus02/crypto-playground
[INFO] frobbed toml for frigus02/crypto-playground written to work/ex/pr-57609/sources/master#03acbd71c977cd63ce5f39ba9b6fe9ffd578785a/gh/frigus02/crypto-playground/Cargo.toml
[INFO] started frobbing frigus02/crypto-playground
[INFO] finished frobbing frigus02/crypto-playground
[INFO] frobbed toml for frigus02/crypto-playground written to work/ex/pr-57609/sources/try#26f8d250bb3c8a85e812cf663c730ef9e0df9315/gh/frigus02/crypto-playground/Cargo.toml
[INFO] crate frigus02/crypto-playground has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+03acbd71c977cd63ce5f39ba9b6fe9ffd578785a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+26f8d250bb3c8a85e812cf663c730ef9e0df9315-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking frigus02/crypto-playground against master#03acbd71c977cd63ce5f39ba9b6fe9ffd578785a for pr-57609
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57609/worker-7/master#03acbd71c977cd63ce5f39ba9b6fe9ffd578785a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57609/sources/master#03acbd71c977cd63ce5f39ba9b6fe9ffd578785a/gh/frigus02/crypto-playground:/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" "+03acbd71c977cd63ce5f39ba9b6fe9ffd578785a-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 480140bf41c2cc186e5e49c9b77a17439914ded953e35f05761db75c34ac995c
[INFO] running `"docker" "start" "-a" "480140bf41c2cc186e5e49c9b77a17439914ded953e35f05761db75c34ac995c"`
[INFO] [stderr]     Checking crypto-playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]  --> src/challenges/break_repeating_key_xor.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let bytes = base64::decode(base64);
[INFO] [stderr]   |         ^^^^^ help: consider using `_bytes` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get`
[INFO] [stderr]  --> src/analysis/hemming_distance.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn get(bytes_a: &[u8], bytes_b: &[u8]) -> Result<u8, String> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]  --> src/challenges/break_repeating_key_xor.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let bytes = base64::decode(base64);
[INFO] [stderr]   |         ^^^^^ help: consider using `_bytes` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `"docker" "inspect" "480140bf41c2cc186e5e49c9b77a17439914ded953e35f05761db75c34ac995c"`
[INFO] running `"docker" "rm" "-f" "480140bf41c2cc186e5e49c9b77a17439914ded953e35f05761db75c34ac995c"`
[INFO] [stdout] 480140bf41c2cc186e5e49c9b77a17439914ded953e35f05761db75c34ac995c