[INFO] fetching crate metrix 0.13.8...
[INFO] checking metrix-0.13.8 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate metrix 0.13.8 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate metrix 0.13.8 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metrix 0.13.8
[INFO] finished tweaking crates.io crate metrix 0.13.8
[INFO] tweaked toml for crates.io crate metrix 0.13.8 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate metrix 0.13.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded exponential-decay-histogram v0.1.5
[INFO] [stderr]   Downloaded pin-project-internal v0.4.17
[INFO] [stderr]   Downloaded pin-project v0.4.17
[INFO] [stderr]   Downloaded jemalloc-ctl v0.3.3
[INFO] [stderr]   Downloaded paste v0.1.12
[INFO] [stderr]   Downloaded jemalloc-sys v0.3.2
[INFO] [stderr]   Downloaded syn v1.0.22
[INFO] [stderr]   Downloaded proc-macro2 v1.0.13
[INFO] [stderr]   Downloaded paste-impl v0.1.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fd2b008414fd8f20935f98668f210d0889d51f7d032921032d42ed2a1c51509
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9fd2b008414fd8f20935f98668f210d0889d51f7d032921032d42ed2a1c51509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fd2b008414fd8f20935f98668f210d0889d51f7d032921032d42ed2a1c51509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fd2b008414fd8f20935f98668f210d0889d51f7d032921032d42ed2a1c51509", kill_on_drop: false }`
[INFO] [stdout] 9fd2b008414fd8f20935f98668f210d0889d51f7d032921032d42ed2a1c51509
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67181a473c6e8933d8aef43c520d6a7edafa17f8af579622b7b05babdbe26f91
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "67181a473c6e8933d8aef43c520d6a7edafa17f8af579622b7b05babdbe26f91", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking exponential-decay-histogram v0.1.5
[INFO] [stderr]     Checking metrix v0.13.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]   --> src/instruments/fundamentals/metrics_meter.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Arc,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_at_mut`
[INFO] [stdout]   --> src/instruments/fundamentals/buckets.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn get_at_mut(&mut self, for_when: Instant) -> Option<&mut T> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `offset`
[INFO] [stdout]   --> src/instruments/fundamentals/clock.rs:34:16
[INFO] [stdout]    |
[INFO] [stdout] 34 |         pub fn offset(&self) -> Duration {
[INFO] [stdout]    |                ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reference`
[INFO] [stdout]   --> src/instruments/fundamentals/clock.rs:38:16
[INFO] [stdout]    |
[INFO] [stdout] 38 |         pub fn reference(&self) -> Instant {
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_offset`
[INFO] [stdout]   --> src/instruments/fundamentals/clock.rs:42:16
[INFO] [stdout]    |
[INFO] [stdout] 42 |         pub fn set_offset(&self, offset: Duration) {
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset`
[INFO] [stdout]   --> src/instruments/fundamentals/clock.rs:46:16
[INFO] [stdout]    |
[INFO] [stdout] 46 |         pub fn reset(&self) {
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.39s
[INFO] running `Command { std: "docker" "inspect" "67181a473c6e8933d8aef43c520d6a7edafa17f8af579622b7b05babdbe26f91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67181a473c6e8933d8aef43c520d6a7edafa17f8af579622b7b05babdbe26f91", kill_on_drop: false }`
[INFO] [stdout] 67181a473c6e8933d8aef43c520d6a7edafa17f8af579622b7b05babdbe26f91