[INFO] cloning repository https://github.com/fastly/prometheus-utils
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fastly/prometheus-utils" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffastly%2Fprometheus-utils", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffastly%2Fprometheus-utils'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8edc18dc46d7a3173b55f837f47111cb73c15913
[INFO] testing fastly/prometheus-utils against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffastly%2Fprometheus-utils" "/workspace/builds/worker-36/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-36/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fastly/prometheus-utils on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-36/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/fastly/prometheus-utils
[INFO] finished tweaking git repo https://github.com/fastly/prometheus-utils
[INFO] tweaked toml for git repo https://github.com/fastly/prometheus-utils written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] crate git repo https://github.com/fastly/prometheus-utils already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7525998d236152faa2658c4330cc831bd7035995ff42c2e837eb7024685ee00
[INFO] running `Command { std: "docker" "start" "-a" "f7525998d236152faa2658c4330cc831bd7035995ff42c2e837eb7024685ee00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7525998d236152faa2658c4330cc831bd7035995ff42c2e837eb7024685ee00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7525998d236152faa2658c4330cc831bd7035995ff42c2e837eb7024685ee00", kill_on_drop: false }`
[INFO] [stdout] f7525998d236152faa2658c4330cc831bd7035995ff42c2e837eb7024685ee00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1115c3f55af33da876bbd761f530b7b9b9f3b106b8eb8dab66562691a4170f0b
[INFO] running `Command { std: "docker" "start" "-a" "1115c3f55af33da876bbd761f530b7b9b9f3b106b8eb8dab66562691a4170f0b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling protobuf v2.24.1
[INFO] [stderr]    Compiling prometheus v0.12.0
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling prometheus-utils v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/instrumented_future.rs:59:55
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pre_polls: Vec<Box<dyn FnOnce() -> Option<Box<dyn Drop + Send>> + Send>>,
[INFO] [stdout]    |                                                       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dyn_drop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/instrumented_future.rs:71:34
[INFO] [stdout]    |
[INFO] [stdout] 71 |     resource_guards: Vec<Box<dyn Drop + Send>>,
[INFO] [stdout]    |                                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/instrumented_future.rs:132:59
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub fn with_guard<GuardFn: FnOnce() -> Option<Box<dyn Drop + Send>> + Send + 'static>(
[INFO] [stdout]     |                                                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 20s
[INFO] running `Command { std: "docker" "inspect" "1115c3f55af33da876bbd761f530b7b9b9f3b106b8eb8dab66562691a4170f0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1115c3f55af33da876bbd761f530b7b9b9f3b106b8eb8dab66562691a4170f0b", kill_on_drop: false }`
[INFO] [stdout] 1115c3f55af33da876bbd761f530b7b9b9f3b106b8eb8dab66562691a4170f0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed4ea2b2d69229e229193a8a3787e61aa680e2362622dd3c6540bce1adee9628
[INFO] running `Command { std: "docker" "start" "-a" "ed4ea2b2d69229e229193a8a3787e61aa680e2362622dd3c6540bce1adee9628", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/instrumented_future.rs:59:55
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pre_polls: Vec<Box<dyn FnOnce() -> Option<Box<dyn Drop + Send>> + Send>>,
[INFO] [stdout]    |                                                       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dyn_drop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/instrumented_future.rs:71:34
[INFO] [stdout]    |
[INFO] [stdout] 71 |     resource_guards: Vec<Box<dyn Drop + Send>>,
[INFO] [stdout]    |                                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/instrumented_future.rs:132:59
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub fn with_guard<GuardFn: FnOnce() -> Option<Box<dyn Drop + Send>> + Send + 'static>(
[INFO] [stdout]     |                                                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling prometheus-utils v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/instrumented_future.rs:59:55
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pre_polls: Vec<Box<dyn FnOnce() -> Option<Box<dyn Drop + Send>> + Send>>,
[INFO] [stdout]    |                                                       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dyn_drop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/instrumented_future.rs:71:34
[INFO] [stdout]    |
[INFO] [stdout] 71 |     resource_guards: Vec<Box<dyn Drop + Send>>,
[INFO] [stdout]    |                                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]    --> src/instrumented_future.rs:132:59
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub fn with_guard<GuardFn: FnOnce() -> Option<Box<dyn Drop + Send>> + Send + 'static>(
[INFO] [stdout]     |                                                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 44.45s
[INFO] running `Command { std: "docker" "inspect" "ed4ea2b2d69229e229193a8a3787e61aa680e2362622dd3c6540bce1adee9628", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed4ea2b2d69229e229193a8a3787e61aa680e2362622dd3c6540bce1adee9628", kill_on_drop: false }`
[INFO] [stdout] ed4ea2b2d69229e229193a8a3787e61aa680e2362622dd3c6540bce1adee9628
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] adb2e56df32b976caf8f08828cb5ef9e67ffdad76452a15dc8f36de416d672a9
[INFO] running `Command { std: "docker" "start" "-a" "adb2e56df32b976caf8f08828cb5ef9e67ffdad76452a15dc8f36de416d672a9", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout] running 5 tests
[INFO] [stderr]   --> src/instrumented_future.rs:59:55
[INFO] [stdout] test percentile::tests::test_overflow_wraps_writes ... ok
[INFO] [stderr]    |
[INFO] [stdout] test percentile::tests::test_small_sampleset ... ok
[INFO] [stderr] 59 |     pre_polls: Vec<Box<dyn FnOnce() -> Option<Box<dyn Drop + Send>> + Send>>,
[INFO] [stdout] test percentile::tests::test_percentiles_are_reported ... ok
[INFO] [stderr]    |                                                       ^^^^
[INFO] [stdout] test percentile::tests::test_wraps_are_reported ... ok
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dyn_drop)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stderr]   --> src/instrumented_future.rs:71:34
[INFO] [stderr]    |
[INFO] [stderr] 71 |     resource_guards: Vec<Box<dyn Drop + Send>>,
[INFO] [stderr]    |                                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stderr]    --> src/instrumented_future.rs:132:59
[INFO] [stderr]     |
[INFO] [stderr] 132 |     pub fn with_guard<GuardFn: FnOnce() -> Option<Box<dyn Drop + Send>> + Send + 'static>(
[INFO] [stderr]     |                                                           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `prometheus-utils` (lib) generated 3 warnings
[INFO] [stderr] warning: `prometheus-utils` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/prometheus_utils-6a0c6c03e150dd2c)
[INFO] [stdout] test instrumented_future::counters_increment_only_when_futures_run ... ok
[INFO] [stderr]    Doc-tests prometheus-utils
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.26s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - label_enum (line 84) ... ignored
[INFO] [stdout] test src/lib.rs - label_enum (line 97) ... ignored
[INFO] [stdout] test src/instrumented_future.rs - instrumented_future::InstrumentedFuture (line 23) - compile ... ok
[INFO] [stdout] test src/instrumented_future.rs - instrumented_future::InstrumentedFuture<F>::with_guard (line 101) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "adb2e56df32b976caf8f08828cb5ef9e67ffdad76452a15dc8f36de416d672a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adb2e56df32b976caf8f08828cb5ef9e67ffdad76452a15dc8f36de416d672a9", kill_on_drop: false }`
[INFO] [stdout] adb2e56df32b976caf8f08828cb5ef9e67ffdad76452a15dc8f36de416d672a9