[INFO] fetching crate metrics-exporter-prometheus 0.1.0-alpha.3...
[INFO] testing metrics-exporter-prometheus-0.1.0-alpha.3 against 1.45.2 for beta-1.46-1
[INFO] extracting crate metrics-exporter-prometheus 0.1.0-alpha.3 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate metrics-exporter-prometheus 0.1.0-alpha.3 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metrics-exporter-prometheus 0.1.0-alpha.3
[INFO] finished tweaking crates.io crate metrics-exporter-prometheus 0.1.0-alpha.3
[INFO] tweaked toml for crates.io crate metrics-exporter-prometheus 0.1.0-alpha.3 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate metrics-exporter-prometheus 0.1.0-alpha.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9323b4212a76436c0e413a76870070d4543f80a504366e5658fdf4a4e7bb4d75
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9323b4212a76436c0e413a76870070d4543f80a504366e5658fdf4a4e7bb4d75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9323b4212a76436c0e413a76870070d4543f80a504366e5658fdf4a4e7bb4d75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9323b4212a76436c0e413a76870070d4543f80a504366e5658fdf4a4e7bb4d75", kill_on_drop: false }`
[INFO] [stdout] 9323b4212a76436c0e413a76870070d4543f80a504366e5658fdf4a4e7bb4d75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 635b9baf6e3436fcbf4f019b72ad0fc8fb62ba26f030f9546c7307f1fe616bc0
[INFO] running `Command { std: "docker" "start" "-a" "635b9baf6e3436fcbf4f019b72ad0fc8fb62ba26f030f9546c7307f1fe616bc0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling rustversion v1.0.3
[INFO] [stderr]    Compiling metrics v0.13.0-alpha.1
[INFO] [stderr]    Compiling tracing-core v0.1.11
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling flate2 v1.0.16
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling hdrhistogram v7.1.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.9
[INFO] [stderr]    Compiling tokio v0.2.21
[INFO] [stderr]    Compiling metrics-macros v0.1.0-alpha.2
[INFO] [stderr]    Compiling tracing v0.1.16
[INFO] [stderr]    Compiling metrics-util v0.4.0-alpha.1
[INFO] [stderr]    Compiling pin-project v0.4.22
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling h2 v0.2.6
[INFO] [stderr]    Compiling hyper v0.13.7
[INFO] [stderr]    Compiling metrics-exporter-prometheus v0.1.0-alpha.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 25s
[INFO] running `Command { std: "docker" "inspect" "635b9baf6e3436fcbf4f019b72ad0fc8fb62ba26f030f9546c7307f1fe616bc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "635b9baf6e3436fcbf4f019b72ad0fc8fb62ba26f030f9546c7307f1fe616bc0", kill_on_drop: false }`
[INFO] [stdout] 635b9baf6e3436fcbf4f019b72ad0fc8fb62ba26f030f9546c7307f1fe616bc0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd53880e4a8de79bc4fbaad87c31d46405b4a4527bcf0decd4f36ce078444524
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dd53880e4a8de79bc4fbaad87c31d46405b4a4527bcf0decd4f36ce078444524", kill_on_drop: false }`
[INFO] [stderr]    Compiling sharded-slab v0.0.9
[INFO] [stderr]    Compiling tracing-serde v0.1.1
[INFO] [stderr]    Compiling tracing-log v0.1.1
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling quanta v0.5.2
[INFO] [stderr]    Compiling chrono v0.4.13
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling tracing-subscriber v0.2.8
[INFO] [stderr]    Compiling metrics-exporter-prometheus v0.1.0-alpha.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 20.92s
[INFO] running `Command { std: "docker" "inspect" "dd53880e4a8de79bc4fbaad87c31d46405b4a4527bcf0decd4f36ce078444524", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd53880e4a8de79bc4fbaad87c31d46405b4a4527bcf0decd4f36ce078444524", kill_on_drop: false }`
[INFO] [stdout] dd53880e4a8de79bc4fbaad87c31d46405b4a4527bcf0decd4f36ce078444524
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0f550f9816ea8d982b082281c598bc701b83530df55235a0536f795d5e7902a5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0f550f9816ea8d982b082281c598bc701b83530df55235a0536f795d5e7902a5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/metrics_exporter_prometheus-2a1436f08e3e1b42
[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
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests metrics-exporter-prometheus
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0f550f9816ea8d982b082281c598bc701b83530df55235a0536f795d5e7902a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f550f9816ea8d982b082281c598bc701b83530df55235a0536f795d5e7902a5", kill_on_drop: false }`
[INFO] [stdout] 0f550f9816ea8d982b082281c598bc701b83530df55235a0536f795d5e7902a5