[INFO] crate openmetrics 0.2.1 is already in cache
[INFO] checking openmetrics-0.2.1 against try#d7b51666469c792a8a3f40849607739bae1e705e for pr-71665
[INFO] extracting crate openmetrics 0.2.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate openmetrics 0.2.1 on toolchain d7b51666469c792a8a3f40849607739bae1e705e
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate openmetrics 0.2.1
[INFO] finished tweaking crates.io crate openmetrics 0.2.1
[INFO] tweaked toml for crates.io crate openmetrics 0.2.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+d7b51666469c792a8a3f40849607739bae1e705e" "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] ec7889633ba69d096200fd3978eecccfd835155ceb9cd12a4d189d3987b3ea1a
[INFO] running `"docker" "start" "-a" "ec7889633ba69d096200fd3978eecccfd835155ceb9cd12a4d189d3987b3ea1a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking openmetrics v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `metric_name`
[INFO] [stderr]   --> src/metrics.rs:80:12
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub fn add(metric_name: &str, metric_text: &str) -> Label {
[INFO] [stderr]    |            ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metric_name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `metric_name`
[INFO] [stderr]   --> src/metrics.rs:24:16
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn add(metric_name: &str, metric_text: &str) -> Label {
[INFO] [stderr]    |                ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metric_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `metric_name`
[INFO] [stderr]   --> src/metrics.rs:61:28
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn new_with_metric(metric_name: &str, metric_text: &str) -> Self {
[INFO] [stderr]    |                            ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metric_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `metric_text`
[INFO] [stderr]   --> src/metrics.rs:61:47
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn new_with_metric(metric_name: &str, metric_text: &str) -> Self {
[INFO] [stderr]    |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metric_text`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `metric_name`
[INFO] [stderr]   --> src/metrics.rs:80:12
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub fn add(metric_name: &str, metric_text: &str) -> Label {
[INFO] [stderr]    |            ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metric_name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `metric_name`
[INFO] [stderr]   --> src/metrics.rs:24:16
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn add(metric_name: &str, metric_text: &str) -> Label {
[INFO] [stderr]    |                ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metric_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `metric_name`
[INFO] [stderr]   --> src/metrics.rs:61:28
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn new_with_metric(metric_name: &str, metric_text: &str) -> Self {
[INFO] [stderr]    |                            ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metric_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `metric_text`
[INFO] [stderr]   --> src/metrics.rs:61:47
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn new_with_metric(metric_name: &str, metric_text: &str) -> Self {
[INFO] [stderr]    |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metric_text`
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.75s
[INFO] running `"docker" "inspect" "ec7889633ba69d096200fd3978eecccfd835155ceb9cd12a4d189d3987b3ea1a"`
[INFO] running `"docker" "rm" "-f" "ec7889633ba69d096200fd3978eecccfd835155ceb9cd12a4d189d3987b3ea1a"`
[INFO] [stdout] ec7889633ba69d096200fd3978eecccfd835155ceb9cd12a4d189d3987b3ea1a