[INFO] cloning repository https://github.com/XOSplicer/rust_crypto_challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/XOSplicer/rust_crypto_challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXOSplicer%2Frust_crypto_challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXOSplicer%2Frust_crypto_challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7c1ad87a68853b71829a38ada2fa1a06b4331a5d
[INFO] checking XOSplicer/rust_crypto_challenge against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXOSplicer%2Frust_crypto_challenge" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/XOSplicer/rust_crypto_challenge on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/XOSplicer/rust_crypto_challenge
[INFO] finished tweaking git repo https://github.com/XOSplicer/rust_crypto_challenge
[INFO] tweaked toml for git repo https://github.com/XOSplicer/rust_crypto_challenge written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/XOSplicer/rust_crypto_challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d8ba9bf030312cfeb600ae472606e769598d797c00535c684a06e5e946529ef
[INFO] running `Command { std: "docker" "start" "-a" "2d8ba9bf030312cfeb600ae472606e769598d797c00535c684a06e5e946529ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d8ba9bf030312cfeb600ae472606e769598d797c00535c684a06e5e946529ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d8ba9bf030312cfeb600ae472606e769598d797c00535c684a06e5e946529ef", kill_on_drop: false }`
[INFO] [stdout] 2d8ba9bf030312cfeb600ae472606e769598d797c00535c684a06e5e946529ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9e4c8892b5f99a1f5fe7480508e88f746f79a2b33a1fdb1ebc739207d7f6d33
[INFO] running `Command { std: "docker" "start" "-a" "c9e4c8892b5f99a1f5fe7480508e88f746f79a2b33a1fdb1ebc739207d7f6d33", kill_on_drop: false }`
[INFO] [stderr]     Checking crypto_challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/core.rs:49:7
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let mut vec6bit = Vec::new();
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/core.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new() -> Hex {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/core.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn new() -> Base64 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/core.rs:49:7
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let mut vec6bit = Vec::new();
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/core.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new() -> Hex {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/core.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn new() -> Base64 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c9e4c8892b5f99a1f5fe7480508e88f746f79a2b33a1fdb1ebc739207d7f6d33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9e4c8892b5f99a1f5fe7480508e88f746f79a2b33a1fdb1ebc739207d7f6d33", kill_on_drop: false }`
[INFO] [stdout] c9e4c8892b5f99a1f5fe7480508e88f746f79a2b33a1fdb1ebc739207d7f6d33