[INFO] cloning repository https://github.com/nicktretyakov/monitoring
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nicktretyakov/monitoring" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicktretyakov%2Fmonitoring", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicktretyakov%2Fmonitoring'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca328d57f2432ef570beea6b880f322d5ee7c289
[INFO] testing nicktretyakov/monitoring against 1.91.0 for beta-1.92-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicktretyakov%2Fmonitoring" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nicktretyakov/monitoring
[INFO] finished tweaking git repo https://github.com/nicktretyakov/monitoring
[INFO] tweaked toml for git repo https://github.com/nicktretyakov/monitoring written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nicktretyakov/monitoring on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nicktretyakov/monitoring already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded opentelemetry_api v0.20.0
[INFO] [stderr]   Downloaded opentelemetry v0.20.0
[INFO] [stderr]   Downloaded tracing-actix-web v0.7.19
[INFO] [stderr]   Downloaded mutually_exclusive_features v0.1.0
[INFO] [stderr]   Downloaded ordered-float v3.9.2
[INFO] [stderr]   Downloaded uuid v1.17.0
[INFO] [stderr]   Downloaded opentelemetry_sdk v0.20.0
[INFO] [stderr]   Downloaded metrics-macros v0.7.1
[INFO] [stderr]   Downloaded is-terminal v0.4.16
[INFO] [stderr]   Downloaded space v0.12.1
[INFO] [stderr]   Downloaded linfa-clustering v0.7.1
[INFO] [stderr]   Downloaded statrs v0.16.1
[INFO] [stderr]   Downloaded symbolic-demangle v12.15.5
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[INFO] [stderr]   Downloaded actix-http v3.11.0
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[INFO] [stderr]   Downloaded bhtsne v0.4.1
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[INFO] [stderr]   Downloaded metrics v0.22.4
[INFO] [stderr]   Downloaded metrics-prometheus v0.6.0
[INFO] [stderr]   Downloaded sentry-types v0.31.8
[INFO] [stderr]   Downloaded order-stat v0.1.3
[INFO] [stderr]   Downloaded metrics v0.21.1
[INFO] [stderr]   Downloaded metrics-util v0.16.3
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[INFO] [stderr]   Downloaded integer-encoding v3.0.4
[INFO] [stderr]   Downloaded ordered-float v2.10.1
[INFO] [stderr]   Downloaded thrift v0.17.0
[INFO] [stderr]   Downloaded symbolic-common v12.15.5
[INFO] [stderr]   Downloaded matrixmultiply v0.1.15
[INFO] [stderr]   Downloaded os_info v3.12.0
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[INFO] [stderr]   Downloaded rand_distr v0.4.3
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[INFO] [stderr]   Downloaded num v0.1.43
[INFO] [stderr]   Downloaded uname v0.1.1
[INFO] [stderr]   Downloaded sealed v0.5.0
[INFO] [stderr]   Downloaded ndarray-stats v0.5.1
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[INFO] [stderr]   Downloaded protobuf-codegen v2.28.0
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[INFO] [stderr]   Downloaded sentry-debug-images v0.31.8
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef671a8a17d3a71600cc8b91d647ac3b60e5269193aea8a8ae379aabbb405a4d
[INFO] running `Command { std: "docker" "start" "-a" "ef671a8a17d3a71600cc8b91d647ac3b60e5269193aea8a8ae379aabbb405a4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef671a8a17d3a71600cc8b91d647ac3b60e5269193aea8a8ae379aabbb405a4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef671a8a17d3a71600cc8b91d647ac3b60e5269193aea8a8ae379aabbb405a4d", kill_on_drop: false }`
[INFO] [stdout] ef671a8a17d3a71600cc8b91d647ac3b60e5269193aea8a8ae379aabbb405a4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 107b8bead4ae50442de64c1b3d63817adbddf6815189aa16d4ee9dc106eb8b25
[INFO] running `Command { std: "docker" "start" "-a" "107b8bead4ae50442de64c1b3d63817adbddf6815189aa16d4ee9dc106eb8b25", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling smallvec v1.15.1
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[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling getrandom v0.3.3
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[INFO] [stderr]    Compiling linfa-tsne v0.7.1
[INFO] [stderr]    Compiling sentry-tracing v0.31.8
[INFO] [stderr]    Compiling linfa-trees v0.7.1
[INFO] [stderr]    Compiling sysinfo v0.29.11
[INFO] [stderr]    Compiling statrs v0.16.1
[INFO] [stderr]    Compiling monitoring-system v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `active_connections` is never read
[INFO] [stdout]   --> src/metrics.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct MetricsCollector {
[INFO] [stdout]    |            ---------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub active_connections: IntGauge,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MetricsCollector` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 49s
[INFO] running `Command { std: "docker" "inspect" "107b8bead4ae50442de64c1b3d63817adbddf6815189aa16d4ee9dc106eb8b25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "107b8bead4ae50442de64c1b3d63817adbddf6815189aa16d4ee9dc106eb8b25", kill_on_drop: false }`
[INFO] [stdout] 107b8bead4ae50442de64c1b3d63817adbddf6815189aa16d4ee9dc106eb8b25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ed6a9090b18b02e17af20aa2627781c5c5a2b5e7a281a1d86fe0f4c2223163f
[INFO] running `Command { std: "docker" "start" "-a" "1ed6a9090b18b02e17af20aa2627781c5c5a2b5e7a281a1d86fe0f4c2223163f", kill_on_drop: false }`
[INFO] [stderr]    Compiling monitoring-system v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `active_connections` is never read
[INFO] [stdout]   --> src/metrics.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct MetricsCollector {
[INFO] [stdout]    |            ---------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     pub active_connections: IntGauge,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MetricsCollector` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.06s
[INFO] running `Command { std: "docker" "inspect" "1ed6a9090b18b02e17af20aa2627781c5c5a2b5e7a281a1d86fe0f4c2223163f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ed6a9090b18b02e17af20aa2627781c5c5a2b5e7a281a1d86fe0f4c2223163f", kill_on_drop: false }`
[INFO] [stdout] 1ed6a9090b18b02e17af20aa2627781c5c5a2b5e7a281a1d86fe0f4c2223163f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ff05715e477f2652e5bd32d7d09d944070f8df5a28617d4520c417dd706eb20b
[INFO] running `Command { std: "docker" "start" "-a" "ff05715e477f2652e5bd32d7d09d944070f8df5a28617d4520c417dd706eb20b", kill_on_drop: false }`
[INFO] [stderr] warning: field `active_connections` is never read
[INFO] [stderr]   --> src/metrics.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct MetricsCollector {
[INFO] [stderr]    |            ---------------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 14 |     pub active_connections: IntGauge,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `MetricsCollector` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `monitoring-system` (bin "monitoring-system" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/monitoring_system-20ebf8f32d3f9ccd)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ff05715e477f2652e5bd32d7d09d944070f8df5a28617d4520c417dd706eb20b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff05715e477f2652e5bd32d7d09d944070f8df5a28617d4520c417dd706eb20b", kill_on_drop: false }`
[INFO] [stdout] ff05715e477f2652e5bd32d7d09d944070f8df5a28617d4520c417dd706eb20b