[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#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[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 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", 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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 05f2ecd6f75975764cbb4d80e8a59d5f71c223244ec70bd8b851495c5a81f6ba
[INFO] running `Command { std: "docker" "start" "-a" "05f2ecd6f75975764cbb4d80e8a59d5f71c223244ec70bd8b851495c5a81f6ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05f2ecd6f75975764cbb4d80e8a59d5f71c223244ec70bd8b851495c5a81f6ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05f2ecd6f75975764cbb4d80e8a59d5f71c223244ec70bd8b851495c5a81f6ba", kill_on_drop: false }`
[INFO] [stdout] 05f2ecd6f75975764cbb4d80e8a59d5f71c223244ec70bd8b851495c5a81f6ba
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8798d6e713099b0f7572de7758bab4c00d8440a5eed3b5369049de58c57a47cc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8798d6e713099b0f7572de7758bab4c00d8440a5eed3b5369049de58c57a47cc", 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: 3 warnings emitted
[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: 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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "8798d6e713099b0f7572de7758bab4c00d8440a5eed3b5369049de58c57a47cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8798d6e713099b0f7572de7758bab4c00d8440a5eed3b5369049de58c57a47cc", kill_on_drop: false }`
[INFO] [stdout] 8798d6e713099b0f7572de7758bab4c00d8440a5eed3b5369049de58c57a47cc