[INFO] fetching crate prometrics 0.1.13...
[INFO] testing prometrics-0.1.13 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate prometrics 0.1.13 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate prometrics 0.1.13 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prometrics 0.1.13
[INFO] finished tweaking crates.io crate prometrics 0.1.13
[INFO] tweaked toml for crates.io crate prometrics 0.1.13 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate prometrics 0.1.13 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trackable_derive v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 764b5c4168b7d1d9a3619d140dbbbde484db0989db75fc8422ad890043551fb8
[INFO] running `Command { std: "docker" "start" "-a" "764b5c4168b7d1d9a3619d140dbbbde484db0989db75fc8422ad890043551fb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "764b5c4168b7d1d9a3619d140dbbbde484db0989db75fc8422ad890043551fb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "764b5c4168b7d1d9a3619d140dbbbde484db0989db75fc8422ad890043551fb8", kill_on_drop: false }`
[INFO] [stdout] 764b5c4168b7d1d9a3619d140dbbbde484db0989db75fc8422ad890043551fb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62d62a2291d50b894aaf2314fe2fe70e1de75bb2abde4d2dc2cbdd66078abd94
[INFO] running `Command { std: "docker" "start" "-a" "62d62a2291d50b894aaf2314fe2fe70e1de75bb2abde4d2dc2cbdd66078abd94", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling nom v2.2.1
[INFO] [stderr]    Compiling atomic_immut v0.1.4
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling trackable_derive v0.1.3
[INFO] [stderr]    Compiling trackable v0.2.23
[INFO] [stderr]    Compiling prometrics v0.1.13 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/metrics/process.rs:17:31
[INFO] [stdout]    |
[INFO] [stdout] 17 |     static ref CLK_TCK: f64 = { unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 } };
[INFO] [stdout]    |                               ^^                                                  ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 17 -     static ref CLK_TCK: f64 = { unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 } };
[INFO] [stdout] 17 +     static ref CLK_TCK: f64 = unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 };
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/metrics/process.rs:18:34
[INFO] [stdout]    |
[INFO] [stdout] 18 |     static ref PAGESIZE: usize = { unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize } };
[INFO] [stdout]    |                                  ^^                                                     ^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 18 -     static ref PAGESIZE: usize = { unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize } };
[INFO] [stdout] 18 +     static ref PAGESIZE: usize = unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize };
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `labels`
[INFO] [stdout]    --> src/label.rs:210:5
[INFO] [stdout]     |
[INFO] [stdout] 210 |     labels: std::sync::Arc<Vec<Label>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Iter` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/label.rs:208:10
[INFO] [stdout]     |
[INFO] [stdout] 208 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `count`
[INFO] [stdout]    --> src/metrics/histogram.rs:321:5
[INFO] [stdout]     |
[INFO] [stdout] 321 |     count: AtomicU64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `Inner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/metrics/histogram.rs:314:10
[INFO] [stdout]     |
[INFO] [stdout] 314 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.87s
[INFO] running `Command { std: "docker" "inspect" "62d62a2291d50b894aaf2314fe2fe70e1de75bb2abde4d2dc2cbdd66078abd94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62d62a2291d50b894aaf2314fe2fe70e1de75bb2abde4d2dc2cbdd66078abd94", kill_on_drop: false }`
[INFO] [stdout] 62d62a2291d50b894aaf2314fe2fe70e1de75bb2abde4d2dc2cbdd66078abd94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dadc0b31fa77359614b12238cadf4c4e6cc09b86333edb4573cede90da506a93
[INFO] running `Command { std: "docker" "start" "-a" "dadc0b31fa77359614b12238cadf4c4e6cc09b86333edb4573cede90da506a93", kill_on_drop: false }`
[INFO] [stderr]    Compiling prometrics v0.1.13 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/metrics/process.rs:17:31
[INFO] [stdout]    |
[INFO] [stdout] 17 |     static ref CLK_TCK: f64 = { unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 } };
[INFO] [stdout]    |                               ^^                                                  ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 17 -     static ref CLK_TCK: f64 = { unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 } };
[INFO] [stdout] 17 +     static ref CLK_TCK: f64 = unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 };
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/metrics/process.rs:18:34
[INFO] [stdout]    |
[INFO] [stdout] 18 |     static ref PAGESIZE: usize = { unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize } };
[INFO] [stdout]    |                                  ^^                                                     ^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 18 -     static ref PAGESIZE: usize = { unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize } };
[INFO] [stdout] 18 +     static ref PAGESIZE: usize = unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize };
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `labels`
[INFO] [stdout]    --> src/label.rs:210:5
[INFO] [stdout]     |
[INFO] [stdout] 210 |     labels: std::sync::Arc<Vec<Label>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Iter` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/label.rs:208:10
[INFO] [stdout]     |
[INFO] [stdout] 208 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `count`
[INFO] [stdout]    --> src/metrics/histogram.rs:321:5
[INFO] [stdout]     |
[INFO] [stdout] 321 |     count: AtomicU64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `Inner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/metrics/histogram.rs:314:10
[INFO] [stdout]     |
[INFO] [stdout] 314 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/metrics/process.rs:17:31
[INFO] [stdout]    |
[INFO] [stdout] 17 |     static ref CLK_TCK: f64 = { unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 } };
[INFO] [stdout]    |                               ^^                                                  ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 17 -     static ref CLK_TCK: f64 = { unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 } };
[INFO] [stdout] 17 +     static ref CLK_TCK: f64 = unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 };
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/metrics/process.rs:18:34
[INFO] [stdout]    |
[INFO] [stdout] 18 |     static ref PAGESIZE: usize = { unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize } };
[INFO] [stdout]    |                                  ^^                                                     ^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 18 -     static ref PAGESIZE: usize = { unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize } };
[INFO] [stdout] 18 +     static ref PAGESIZE: usize = unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize };
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `labels`
[INFO] [stdout]    --> src/label.rs:210:5
[INFO] [stdout]     |
[INFO] [stdout] 210 |     labels: std::sync::Arc<Vec<Label>>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Iter` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/label.rs:208:10
[INFO] [stdout]     |
[INFO] [stdout] 208 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `count`
[INFO] [stdout]    --> src/metrics/histogram.rs:321:5
[INFO] [stdout]     |
[INFO] [stdout] 321 |     count: AtomicU64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `Inner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/metrics/histogram.rs:314:10
[INFO] [stdout]     |
[INFO] [stdout] 314 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.01s
[INFO] running `Command { std: "docker" "inspect" "dadc0b31fa77359614b12238cadf4c4e6cc09b86333edb4573cede90da506a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dadc0b31fa77359614b12238cadf4c4e6cc09b86333edb4573cede90da506a93", kill_on_drop: false }`
[INFO] [stdout] dadc0b31fa77359614b12238cadf4c4e6cc09b86333edb4573cede90da506a93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c5fe5a254d376e588f9e2f3ac54526aae2656f6eb3907f523b2815ed85c036ff
[INFO] running `Command { std: "docker" "start" "-a" "c5fe5a254d376e588f9e2f3ac54526aae2656f6eb3907f523b2815ed85c036ff", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/metrics/process.rs:17:31
[INFO] [stderr]    |
[INFO] [stderr] 17 |     static ref CLK_TCK: f64 = { unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 } };
[INFO] [stderr]    |                               ^^                                                  ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr] 17 -     static ref CLK_TCK: f64 = { unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 } };
[INFO] [stderr] 17 +     static ref CLK_TCK: f64 = unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 };
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/metrics/process.rs:18:34
[INFO] [stderr]    |
[INFO] [stderr] 18 |     static ref PAGESIZE: usize = { unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize } };
[INFO] [stderr]    |                                  ^^                                                     ^^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr] 18 -     static ref PAGESIZE: usize = { unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize } };
[INFO] [stderr] 18 +     static ref PAGESIZE: usize = unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize };
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `labels`
[INFO] [stderr]    --> src/label.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 |     labels: std::sync::Arc<Vec<Label>>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Iter` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/label.rs:208:10
[INFO] [stderr]     |
[INFO] [stderr] 208 | #[derive(Debug)]
[INFO] [stderr]     |          ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `count`
[INFO] [stderr]    --> src/metrics/histogram.rs:321:5
[INFO] [stderr]     |
[INFO] [stderr] 321 |     count: AtomicU64,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `Inner` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/metrics/histogram.rs:314:10
[INFO] [stderr]     |
[INFO] [stderr] 314 | #[derive(Debug)]
[INFO] [stderr]     |          ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `prometrics` (lib) generated 4 warnings
[INFO] [stderr] warning: `prometrics` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/prometrics-f6ef391affd99e45)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test atomic::test::atomic_f64_works ... ok
[INFO] [stdout] test metrics::gauge::test::it_works ... ok
[INFO] [stdout] test metrics::counter::test::it_works ... ok
[INFO] [stdout] test metrics::histogram::test::buckets_works ... ok
[INFO] [stdout] test metrics::histogram::test::it_works ... ok
[INFO] [stdout] test metrics::summary::test::it_works ... ok
[INFO] [stdout] test test::it_works ... ok
[INFO] [stdout] test test::aggregation_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests prometrics
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> /opt/rustwide/workdir/src/metrics/process.rs:17:31
[INFO] [stderr]    |
[INFO] [stderr] 17 |     static ref CLK_TCK: f64 = { unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 } };
[INFO] [stderr]    |                               ^^                                                  ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr] 17 -     static ref CLK_TCK: f64 = { unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 } };
[INFO] [stderr] 17 +     static ref CLK_TCK: f64 = unsafe { libc::sysconf(libc::_SC_CLK_TCK) as f64 };
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> /opt/rustwide/workdir/src/metrics/process.rs:18:34
[INFO] [stderr]    |
[INFO] [stderr] 18 |     static ref PAGESIZE: usize = { unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize } };
[INFO] [stderr]    |                                  ^^                                                     ^^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr] 18 -     static ref PAGESIZE: usize = { unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize } };
[INFO] [stderr] 18 +     static ref PAGESIZE: usize = unsafe { libc::sysconf(libc::_SC_PAGESIZE) as usize };
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/label.rs - label::Label::new (line 37) ... ok
[INFO] [stdout] test src/metrics/counter.rs - metrics::counter::Counter (line 19) ... ok
[INFO] [stdout] test src/metrics/gauge.rs - metrics::gauge::Gauge::track_inprogress (line 102) ... ok
[INFO] [stdout] test src/metrics/process.rs - metrics::process::ProcessMetricsCollector (line 33) ... ok
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.43s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c5fe5a254d376e588f9e2f3ac54526aae2656f6eb3907f523b2815ed85c036ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5fe5a254d376e588f9e2f3ac54526aae2656f6eb3907f523b2815ed85c036ff", kill_on_drop: false }`
[INFO] [stdout] c5fe5a254d376e588f9e2f3ac54526aae2656f6eb3907f523b2815ed85c036ff