[INFO] fetching crate prometheus-linux-nfsdv4-exporter 1.1.3...
[INFO] checking prometheus-linux-nfsdv4-exporter-1.1.3 against master#16b569057e4d1591b4bee05f10df34000308dedc for pr-127827
[INFO] extracting crate prometheus-linux-nfsdv4-exporter 1.1.3 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate prometheus-linux-nfsdv4-exporter 1.1.3 on toolchain 16b569057e4d1591b4bee05f10df34000308dedc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16b569057e4d1591b4bee05f10df34000308dedc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prometheus-linux-nfsdv4-exporter 1.1.3
[INFO] finished tweaking crates.io crate prometheus-linux-nfsdv4-exporter 1.1.3
[INFO] tweaked toml for crates.io crate prometheus-linux-nfsdv4-exporter 1.1.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate prometheus-linux-nfsdv4-exporter 1.1.3 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" "+16b569057e4d1591b4bee05f10df34000308dedc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tungstenite v0.11.1
[INFO] [stderr]   Downloaded quote v1.0.17
[INFO] [stderr]   Downloaded semver v1.0.7
[INFO] [stderr]   Downloaded libflate v1.2.0
[INFO] [stderr]   Downloaded pin-project v0.4.29
[INFO] [stderr]   Downloaded urlencoding v1.3.3
[INFO] [stderr]   Downloaded protobuf v2.27.1
[INFO] [stderr]   Downloaded libflate_lz77 v1.1.0
[INFO] [stderr]   Downloaded crypto-common v0.1.3
[INFO] [stderr]   Downloaded procfs v0.7.9
[INFO] [stderr]   Downloaded warp v0.2.5
[INFO] [stderr]   Downloaded redox_syscall v0.2.12
[INFO] [stderr]   Downloaded pin-project-internal v0.4.29
[INFO] [stderr]   Downloaded multipart v0.17.1
[INFO] [stderr]   Downloaded tinyvec v1.5.1
[INFO] [stderr]   Downloaded tokio-tungstenite v0.11.0
[INFO] [stderr]   Downloaded syn v1.0.90
[INFO] [stderr]   Downloaded input_buffer v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+16b569057e4d1591b4bee05f10df34000308dedc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] add0b3b8e86be3a111137fb9292bcd04dba12264eb10bc29583cd038860e5c36
[INFO] running `Command { std: "docker" "start" "-a" "add0b3b8e86be3a111137fb9292bcd04dba12264eb10bc29583cd038860e5c36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "add0b3b8e86be3a111137fb9292bcd04dba12264eb10bc29583cd038860e5c36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "add0b3b8e86be3a111137fb9292bcd04dba12264eb10bc29583cd038860e5c36", kill_on_drop: false }`
[INFO] [stdout] add0b3b8e86be3a111137fb9292bcd04dba12264eb10bc29583cd038860e5c36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+16b569057e4d1591b4bee05f10df34000308dedc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3566527f1ec3459d6da6ee407e8414eacd19d59222dde4d7c0daed29be7654fc
[INFO] running `Command { std: "docker" "start" "-a" "3566527f1ec3459d6da6ee407e8414eacd19d59222dde4d7c0daed29be7654fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking tracing-core v0.1.23
[INFO] [stderr]    Compiling pin-project-internal v0.4.29
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking crypto-common v0.1.3
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking rle-decode-fast v1.0.3
[INFO] [stderr]     Checking digest v0.10.3
[INFO] [stderr]     Checking libflate_lz77 v1.1.0
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling protobuf v2.27.1
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[INFO] [stderr]     Checking futures-io v0.3.21
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[INFO] [stderr]    Compiling prometheus v0.9.0
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[INFO] [stderr]     Checking twoway v0.1.8
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[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]    Compiling quote v1.0.17
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[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking multipart v0.17.1
[INFO] [stderr]     Checking tungstenite v0.11.1
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[INFO] [stderr]    Compiling thiserror-impl v1.0.30
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[INFO] [stderr]     Checking warp v0.2.5
[INFO] [stderr]     Checking prometheus-linux-nfsdv4-exporter v1.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `clientid` is never read
[INFO] [stdout]   --> src/nfs/nfsv4.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Nfsv4Client {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 36 |     pub clientid: String,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Nfsv4Client` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_type_of` is never used
[INFO] [stdout]   --> src/utils/helper.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn print_type_of<T>(_: &T) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `clientid` is never read
[INFO] [stdout]   --> src/nfs/nfsv4.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Nfsv4Client {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 36 |     pub clientid: String,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Nfsv4Client` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_type_of` is never used
[INFO] [stdout]   --> src/utils/helper.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn print_type_of<T>(_: &T) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[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: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let _ = match matches.subcommand() {
[INFO] [stdout]    |     +++++++
[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: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let _ = match matches.subcommand() {
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.99s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: buf_redux v0.8.4, multipart v0.17.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "3566527f1ec3459d6da6ee407e8414eacd19d59222dde4d7c0daed29be7654fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3566527f1ec3459d6da6ee407e8414eacd19d59222dde4d7c0daed29be7654fc", kill_on_drop: false }`
[INFO] [stdout] 3566527f1ec3459d6da6ee407e8414eacd19d59222dde4d7c0daed29be7654fc