[INFO] fetching crate prometheus-linux-nfsdv4-exporter 1.0.1...
[INFO] testing prometheus-linux-nfsdv4-exporter-1.0.1 against 1.59.0 for beta-1.60-1
[INFO] extracting crate prometheus-linux-nfsdv4-exporter 1.0.1 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate prometheus-linux-nfsdv4-exporter 1.0.1 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prometheus-linux-nfsdv4-exporter 1.0.1
[INFO] finished tweaking crates.io crate prometheus-linux-nfsdv4-exporter 1.0.1
[INFO] tweaked toml for crates.io crate prometheus-linux-nfsdv4-exporter 1.0.1 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate crates.io crate prometheus-linux-nfsdv4-exporter 1.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libflate v1.1.0
[INFO] [stderr]   Downloaded protobuf v2.25.1
[INFO] [stderr]   Downloaded prometheus v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1aa7136205df6284aa40e82b46c1411c762628b967b9ab182e91b845450f9d40
[INFO] running `Command { std: "docker" "start" "-a" "1aa7136205df6284aa40e82b46c1411c762628b967b9ab182e91b845450f9d40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1aa7136205df6284aa40e82b46c1411c762628b967b9ab182e91b845450f9d40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1aa7136205df6284aa40e82b46c1411c762628b967b9ab182e91b845450f9d40", kill_on_drop: false }`
[INFO] [stdout] 1aa7136205df6284aa40e82b46c1411c762628b967b9ab182e91b845450f9d40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a44a8bf1b868cccf50b893d49d90180997fab46a17ac45c69e4d18cd084427cc
[INFO] running `Command { std: "docker" "start" "-a" "a44a8bf1b868cccf50b893d49d90180997fab46a17ac45c69e4d18cd084427cc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling futures-sink v0.3.16
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.6
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling cpufeatures v0.1.5
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling pin-project-internal v0.4.28
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling protobuf v2.25.1
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling futures-io v0.3.16
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling prometheus v0.9.0
[INFO] [stderr]    Compiling httpdate v0.3.2
[INFO] [stderr]    Compiling urlencoding v1.3.3
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling http v0.2.4
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling tinyvec v1.3.1
[INFO] [stderr]    Compiling tracing-core v0.1.19
[INFO] [stderr]    Compiling libflate_lz77 v1.1.0
[INFO] [stderr]    Compiling buf_redux v0.8.4
[INFO] [stderr]    Compiling twoway v0.1.8
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling libflate v1.1.0
[INFO] [stderr]    Compiling input_buffer v0.3.1
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling procfs v0.7.9
[INFO] [stderr]    Compiling nix v0.22.1
[INFO] [stderr]    Compiling headers-core v0.2.0
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling sha-1 v0.9.7
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling headers v0.3.4
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling futures v0.3.16
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling tungstenite v0.11.1
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling multipart v0.17.1
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling tracing-futures v0.2.5
[INFO] [stderr]    Compiling pin-project v0.4.28
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-tungstenite v0.11.0
[INFO] [stderr]    Compiling h2 v0.2.7
[INFO] [stderr]    Compiling hyper v0.13.10
[INFO] [stderr]    Compiling warp v0.2.5
[INFO] [stderr]    Compiling prometheus-linux-nfsdv4-exporter v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | /     match matches.subcommand() {
[INFO] [stdout] 82 | |         ("set", Some(m)) => start_prometheus(m),
[INFO] [stdout] 83 | |         _ => Ok(help()),
[INFO] [stdout] 84 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.85s
[INFO] running `Command { std: "docker" "inspect" "a44a8bf1b868cccf50b893d49d90180997fab46a17ac45c69e4d18cd084427cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a44a8bf1b868cccf50b893d49d90180997fab46a17ac45c69e4d18cd084427cc", kill_on_drop: false }`
[INFO] [stdout] a44a8bf1b868cccf50b893d49d90180997fab46a17ac45c69e4d18cd084427cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0de90e8d109aee4c8464ba70b5494f30a0ca96aa714d710809f1b1d9522b949c
[INFO] running `Command { std: "docker" "start" "-a" "0de90e8d109aee4c8464ba70b5494f30a0ca96aa714d710809f1b1d9522b949c", kill_on_drop: false }`
[INFO] [stderr]    Compiling prometheus-linux-nfsdv4-exporter v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | /     match matches.subcommand() {
[INFO] [stdout] 82 | |         ("set", Some(m)) => start_prometheus(m),
[INFO] [stdout] 83 | |         _ => Ok(help()),
[INFO] [stdout] 84 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "0de90e8d109aee4c8464ba70b5494f30a0ca96aa714d710809f1b1d9522b949c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0de90e8d109aee4c8464ba70b5494f30a0ca96aa714d710809f1b1d9522b949c", kill_on_drop: false }`
[INFO] [stdout] 0de90e8d109aee4c8464ba70b5494f30a0ca96aa714d710809f1b1d9522b949c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d67baa22604d65cde0ce67c8c4017e9ebdaa9cb07d2b4039b683baa492f581db
[INFO] running `Command { std: "docker" "start" "-a" "d67baa22604d65cde0ce67c8c4017e9ebdaa9cb07d2b4039b683baa492f581db", kill_on_drop: false }`
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 | /     match matches.subcommand() {
[INFO] [stderr] 82 | |         ("set", Some(m)) => start_prometheus(m),
[INFO] [stderr] 83 | |         _ => Ok(help()),
[INFO] [stderr] 84 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `prometheus-linux-nfsdv4-exporter` (bin "prometheus-linux-nfsdv4-exporter" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/prometheus_linux_nfsdv4_exporter-f49e81e23097683f)
[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" "d67baa22604d65cde0ce67c8c4017e9ebdaa9cb07d2b4039b683baa492f581db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d67baa22604d65cde0ce67c8c4017e9ebdaa9cb07d2b4039b683baa492f581db", kill_on_drop: false }`
[INFO] [stdout] d67baa22604d65cde0ce67c8c4017e9ebdaa9cb07d2b4039b683baa492f581db