[INFO] crate no_proto 0.0.0-beta.3 is already in cache
[INFO] checking no_proto-0.0.0-beta.3 against try#1cdff26b98d4c2377ea6ae8929f1daebbf58f2b0 for pr-69530
[INFO] extracting crate no_proto 0.0.0-beta.3 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate no_proto 0.0.0-beta.3 on toolchain 1cdff26b98d4c2377ea6ae8929f1daebbf58f2b0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1cdff26b98d4c2377ea6ae8929f1daebbf58f2b0" "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-13/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1cdff26b98d4c2377ea6ae8929f1daebbf58f2b0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1cdff26b98d4c2377ea6ae8929f1daebbf58f2b0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1cdff26b98d4c2377ea6ae8929f1daebbf58f2b0" "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] a998da094d5cc2e702d1db5cebdaf6ccfea4dce14eec6e173a8e2fcef01cb18d
[INFO] running `"docker" "start" "-a" "a998da094d5cc2e702d1db5cebdaf6ccfea4dce14eec6e173a8e2fcef01cb18d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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: consider prefixing 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: consider prefixing with an underscore: `_buffer`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `"docker" "inspect" "a998da094d5cc2e702d1db5cebdaf6ccfea4dce14eec6e173a8e2fcef01cb18d"`
[INFO] running `"docker" "rm" "-f" "a998da094d5cc2e702d1db5cebdaf6ccfea4dce14eec6e173a8e2fcef01cb18d"`
[INFO] [stdout] a998da094d5cc2e702d1db5cebdaf6ccfea4dce14eec6e173a8e2fcef01cb18d