[INFO] fetching crate prometheus_exporter_base 0.30.4...
[INFO] testing prometheus_exporter_base-0.30.4 against 1.44.0 for beta-1.45-1
[INFO] extracting crate prometheus_exporter_base 0.30.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate prometheus_exporter_base 0.30.4 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate prometheus_exporter_base 0.30.4
[INFO] finished tweaking crates.io crate prometheus_exporter_base 0.30.4
[INFO] tweaked toml for crates.io crate prometheus_exporter_base 0.30.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate prometheus_exporter_base 0.30.4 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ad87b6b42c541694bd08a8da77be4bb37fc7631d0a5a6b92ac682b364b527fe9
[INFO] running `"docker" "start" "-a" "ad87b6b42c541694bd08a8da77be4bb37fc7631d0a5a6b92ac682b364b527fe9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling once_cell v1.3.1
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]    Compiling pin-project-lite v0.1.5
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling base64 v0.11.0
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling http v0.2.1
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling ring v0.16.13
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling backtrace v0.3.46
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling webpki v0.21.2
[INFO] [stderr]    Compiling ct-logs v0.6.0
[INFO] [stderr]    Compiling rustls v0.17.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling rustls-native-certs v0.3.0
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling pin-project-internal v0.4.15
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling tokio v0.2.20
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling pin-project v0.4.15
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-rustls v0.13.0
[INFO] [stderr]    Compiling h2 v0.2.5
[INFO] [stderr]    Compiling hyper v0.13.5
[INFO] [stderr]    Compiling hyper-rustls v0.20.0
[INFO] [stderr]    Compiling prometheus_exporter_base v0.30.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `"docker" "inspect" "ad87b6b42c541694bd08a8da77be4bb37fc7631d0a5a6b92ac682b364b527fe9"`
[INFO] running `"docker" "rm" "-f" "ad87b6b42c541694bd08a8da77be4bb37fc7631d0a5a6b92ac682b364b527fe9"`
[INFO] [stdout] ad87b6b42c541694bd08a8da77be4bb37fc7631d0a5a6b92ac682b364b527fe9
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3c6ac4c98863964c02b68b40149382ebcfd88a051aa88481c94384fff9fb9f7d
[INFO] running `"docker" "start" "-a" "3c6ac4c98863964c02b68b40149382ebcfd88a051aa88481c94384fff9fb9f7d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling prometheus_exporter_base v0.30.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> examples/folder_size.rs:26:17
[INFO] [stderr]    |
[INFO] [stderr] 26 |         .author(crate_authors!("\n"))
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> examples/folder_size.rs:26:17
[INFO] [stderr]    |
[INFO] [stderr] 26 |         .author(crate_authors!("\n"))
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.30s
[INFO] running `"docker" "inspect" "3c6ac4c98863964c02b68b40149382ebcfd88a051aa88481c94384fff9fb9f7d"`
[INFO] running `"docker" "rm" "-f" "3c6ac4c98863964c02b68b40149382ebcfd88a051aa88481c94384fff9fb9f7d"`
[INFO] [stdout] 3c6ac4c98863964c02b68b40149382ebcfd88a051aa88481c94384fff9fb9f7d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 80328d7962ba70fd72f6dcea6ee2e60c7b124e472f158baf0037c93980280eac
[INFO] running `"docker" "start" "-a" "80328d7962ba70fd72f6dcea6ee2e60c7b124e472f158baf0037c93980280eac"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> examples/folder_size.rs:26:17
[INFO] [stderr]    |
[INFO] [stderr] 26 |         .author(crate_authors!("\n"))
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> examples/folder_size.rs:26:17
[INFO] [stderr]    |
[INFO] [stderr] 26 |         .author(crate_authors!("\n"))
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.21s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/prometheus_exporter_base-ba914aa402a18ae6
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test render_to_prometheus::tests::test_header ... ok
[INFO] [stdout] test render_to_prometheus::tests::test_no_labels ... ok
[INFO] [stdout] test metric_type::tests::test_display ... ok
[INFO] [stdout] test render_to_prometheus::tests::test_labels ... ok
[INFO] [stdout] test metric_type::tests::test_as_ref ... ok
[INFO] [stdout] test metric_type::tests::test_try_from_ok ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests prometheus_exporter_base
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/render_to_prometheus.rs - render_to_prometheus::PrometheusMetric::render_sample (line 45) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "80328d7962ba70fd72f6dcea6ee2e60c7b124e472f158baf0037c93980280eac"`
[INFO] running `"docker" "rm" "-f" "80328d7962ba70fd72f6dcea6ee2e60c7b124e472f158baf0037c93980280eac"`
[INFO] [stdout] 80328d7962ba70fd72f6dcea6ee2e60c7b124e472f158baf0037c93980280eac