[INFO] crate no_proto 0.0.0-beta.3 is already in cache
[INFO] checking no_proto-0.0.0-beta.3 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate no_proto 0.0.0-beta.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate no_proto 0.0.0-beta.3 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate no_proto 0.0.0-beta.3
[INFO] finished tweaking crates.io crate no_proto 0.0.0-beta.3
[INFO] tweaked toml for crates.io crate no_proto 0.0.0-beta.3 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 460eef1d7ae3bf15bc148dd7d2c0c0f0e3c8cf3a0437df7a097294f5b53cd4ac
[INFO] running `"docker" "start" "-a" "460eef1d7ae3bf15bc148dd7d2c0c0f0e3c8cf3a0437df7a097294f5b53cd4ac"`
[INFO] [stderr]     Checking no_proto v0.0.0-beta.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `buffer`
[INFO] [stderr]    --> src/lib.rs:243:27
[INFO] [stderr]     |
[INFO] [stderr] 243 |     pub fn to_json(&self, buffer: &Vec<u8>) -> String {
[INFO] [stderr]     |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffer`
[INFO] [stderr]    --> src/lib.rs:243:27
[INFO] [stderr]     |
[INFO] [stderr] 243 |     pub fn to_json(&self, buffer: &Vec<u8>) -> String {
[INFO] [stderr]     |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffer`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.91s
[INFO] running `"docker" "inspect" "460eef1d7ae3bf15bc148dd7d2c0c0f0e3c8cf3a0437df7a097294f5b53cd4ac"`
[INFO] running `"docker" "rm" "-f" "460eef1d7ae3bf15bc148dd7d2c0c0f0e3c8cf3a0437df7a097294f5b53cd4ac"`
[INFO] [stdout] 460eef1d7ae3bf15bc148dd7d2c0c0f0e3c8cf3a0437df7a097294f5b53cd4ac