[INFO] cloning repository frigus02/crypto-playground
[INFO] running `"git" "clone" "--bare" "git://github.com/frigus02/crypto-playground.git" "work/cache/sources/gh/frigus02/crypto-playground"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/frigus02/crypto-playground'...
[INFO] running `"git" "clone" "work/cache/sources/gh/frigus02/crypto-playground" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/frigus02/crypto-playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/frigus02/crypto-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/frigus02/crypto-playground" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/frigus02/crypto-playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/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#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of frigus02/crypto-playground on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-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-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/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-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/frigus02/crypto-playground/Cargo.toml
[INFO] crate frigus02/crypto-playground already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking frigus02/crypto-playground against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-6/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/frigus02/crypto-playground:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b46f057bd52c4c5723428b0bb5f8270de379ac1b871e8907dd579187d0a5e47a
[INFO] running `"docker" "start" "-a" "b46f057bd52c4c5723428b0bb5f8270de379ac1b871e8907dd579187d0a5e47a"`
[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 prefixing with an underscore: `_bytes`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] 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 prefixing with an underscore: `_bytes`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `"docker" "inspect" "b46f057bd52c4c5723428b0bb5f8270de379ac1b871e8907dd579187d0a5e47a"`
[INFO] running `"docker" "rm" "-f" "b46f057bd52c4c5723428b0bb5f8270de379ac1b871e8907dd579187d0a5e47a"`
[INFO] [stdout] b46f057bd52c4c5723428b0bb5f8270de379ac1b871e8907dd579187d0a5e47a