[INFO] fetching crate prometheus-linux-nfsdv4-exporter 1.0.1...
[INFO] checking prometheus-linux-nfsdv4-exporter-1.0.1 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate prometheus-linux-nfsdv4-exporter 1.0.1 into /workspace/builds/worker-115/source
[INFO] validating manifest of crates.io crate prometheus-linux-nfsdv4-exporter 1.0.1 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "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-115/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" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-tungstenite v0.11.0
[INFO] [stderr]   Downloaded tracing-core v0.1.19
[INFO] [stderr]   Downloaded tungstenite v0.11.1
[INFO] [stderr]   Downloaded libflate v1.1.0
[INFO] [stderr]   Downloaded serde v1.0.129
[INFO] [stderr]   Downloaded libflate_lz77 v1.1.0
[INFO] [stderr]   Downloaded multipart v0.17.1
[INFO] [stderr]   Downloaded prometheus v0.9.0
[INFO] [stderr]   Downloaded warp v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28f3e432d3b06a4386ab43863c65b8c1942aa72b95129b848e5ccc7e0cecdc95
[INFO] running `Command { std: "docker" "start" "-a" "28f3e432d3b06a4386ab43863c65b8c1942aa72b95129b848e5ccc7e0cecdc95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28f3e432d3b06a4386ab43863c65b8c1942aa72b95129b848e5ccc7e0cecdc95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28f3e432d3b06a4386ab43863c65b8c1942aa72b95129b848e5ccc7e0cecdc95", kill_on_drop: false }`
[INFO] [stdout] 28f3e432d3b06a4386ab43863c65b8c1942aa72b95129b848e5ccc7e0cecdc95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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=forbid" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cef9a7d777dce07808ee91777d3946ecacccd1bd10470079f6e5ab1e06bcc31b
[INFO] running `Command { std: "docker" "start" "-a" "cef9a7d777dce07808ee91777d3946ecacccd1bd10470079f6e5ab1e06bcc31b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]     Checking futures-sink v0.3.16
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[INFO] [stderr]    Compiling bitflags v1.2.1
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[INFO] [stderr]     Checking cpufeatures v0.1.5
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]     Checking byteorder v1.4.3
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[INFO] [stderr]    Compiling prometheus v0.9.0
[INFO] [stderr]     Checking httpdate v0.3.2
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[INFO] [stderr]    Compiling pin-project-internal v0.4.28
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[INFO] [stderr]    Compiling futures-util v0.3.16
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[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking tracing v0.1.26
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[INFO] [stderr]     Checking rand v0.8.4
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[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[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]     Checking tungstenite v0.11.1
[INFO] [stderr]     Checking multipart v0.17.1
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking pin-project v0.4.28
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tungstenite v0.11.0
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking hyper v0.13.10
[INFO] [stderr]     Checking warp v0.2.5
[INFO] [stderr]     Checking 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: 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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.85s
[INFO] running `Command { std: "docker" "inspect" "cef9a7d777dce07808ee91777d3946ecacccd1bd10470079f6e5ab1e06bcc31b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cef9a7d777dce07808ee91777d3946ecacccd1bd10470079f6e5ab1e06bcc31b", kill_on_drop: false }`
[INFO] [stdout] cef9a7d777dce07808ee91777d3946ecacccd1bd10470079f6e5ab1e06bcc31b