[INFO] fetching crate minecraft-protocol 0.1.0...
[INFO] checking minecraft-protocol-0.1.0 against beta for pr-78714
[INFO] extracting crate minecraft-protocol 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate minecraft-protocol 0.1.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate minecraft-protocol 0.1.0
[INFO] finished tweaking crates.io crate minecraft-protocol 0.1.0
[INFO] tweaked toml for crates.io crate minecraft-protocol 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b4e3def951285547a38d4bbaf1d896506028ebbfd2f82fb79d9cdfa422ac5cd
[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" "3b4e3def951285547a38d4bbaf1d896506028ebbfd2f82fb79d9cdfa422ac5cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b4e3def951285547a38d4bbaf1d896506028ebbfd2f82fb79d9cdfa422ac5cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b4e3def951285547a38d4bbaf1d896506028ebbfd2f82fb79d9cdfa422ac5cd", kill_on_drop: false }`
[INFO] [stdout] 3b4e3def951285547a38d4bbaf1d896506028ebbfd2f82fb79d9cdfa422ac5cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] eefccf3e7073e8679606ad93cf2987bca68e39b8015b78d983443c5c99ab1a4e
[INFO] running `Command { std: "docker" "start" "-a" "eefccf3e7073e8679606ad93cf2987bca68e39b8015b78d983443c5c99ab1a4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling minecraft-protocol-derive v0.0.0
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking named-binary-tag v0.2.3
[INFO] [stderr]     Checking minecraft-protocol v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Cursor`
[INFO] [stdout]  --> src/lib.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::{Cursor, Read, Write};
[INFO] [stdout]   |               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `encode`
[INFO] [stdout]    --> src/lib.rs:569:12
[INFO] [stdout]     |
[INFO] [stdout] 569 |     pub fn encode<W: Write>(value: &i64, writer: &mut W) -> Result<(), EncodeError> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decode`
[INFO] [stdout]    --> src/lib.rs:575:12
[INFO] [stdout]     |
[INFO] [stdout] 575 |     pub fn decode<R: Read>(reader: &mut R) -> Result<i64, DecodeError> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `encode`
[INFO] [stdout]    --> src/lib.rs:569:12
[INFO] [stdout]     |
[INFO] [stdout] 569 |     pub fn encode<W: Write>(value: &i64, writer: &mut W) -> Result<(), EncodeError> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decode`
[INFO] [stdout]    --> src/lib.rs:575:12
[INFO] [stdout]     |
[INFO] [stdout] 575 |     pub fn decode<R: Read>(reader: &mut R) -> Result<i64, DecodeError> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.54s
[INFO] running `Command { std: "docker" "inspect" "eefccf3e7073e8679606ad93cf2987bca68e39b8015b78d983443c5c99ab1a4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eefccf3e7073e8679606ad93cf2987bca68e39b8015b78d983443c5c99ab1a4e", kill_on_drop: false }`
[INFO] [stdout] eefccf3e7073e8679606ad93cf2987bca68e39b8015b78d983443c5c99ab1a4e