[INFO] fetching crate metrix 0.13.9...
[INFO] checking metrix-0.13.9 against master#a874956d940ecb3ed524b6176a171219ac4787ea for pr-76104
[INFO] extracting crate metrix 0.13.9 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate metrix 0.13.9 on toolchain a874956d940ecb3ed524b6176a171219ac4787ea
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metrix 0.13.9
[INFO] finished tweaking crates.io crate metrix 0.13.9
[INFO] tweaked toml for crates.io crate metrix 0.13.9 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate metrix 0.13.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 657fa13e7e06e2a8fb8689bc6bdc8fcdbfa9714f60bc9fc33491134e33ac129c
[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" "657fa13e7e06e2a8fb8689bc6bdc8fcdbfa9714f60bc9fc33491134e33ac129c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "657fa13e7e06e2a8fb8689bc6bdc8fcdbfa9714f60bc9fc33491134e33ac129c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "657fa13e7e06e2a8fb8689bc6bdc8fcdbfa9714f60bc9fc33491134e33ac129c", kill_on_drop: false }`
[INFO] [stdout] 657fa13e7e06e2a8fb8689bc6bdc8fcdbfa9714f60bc9fc33491134e33ac129c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+a874956d940ecb3ed524b6176a171219ac4787ea" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 38b7858c4136959910f72f2dfcfd3e81636fe748409c6b66dad3f69ac03c930e
[INFO] running `Command { std: "docker" "start" "-a" "38b7858c4136959910f72f2dfcfd3e81636fe748409c6b66dad3f69ac03c930e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[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 v0.13.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Duration`, `Instant`
[INFO] [stdout]  --> src/attached_mount.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `attached_mount::AttachedMount`
[INFO] [stdout]   --> src/driver.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 | use crate::{attached_mount::AttachedMount, instruments::*};
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `attached_mount::InternalAttachedMount`
[INFO] [stdout]   --> src/driver.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     attached_mount::InternalAttachedMount,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `processor::ProcessorMount`
[INFO] [stdout]   --> src/driver.rs:27:39
[INFO] [stdout]    |
[INFO] [stdout] 27 | use crate::{instruments::switches::*, processor::ProcessorMount};
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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] 
[INFO] [stdout] warning: unused imports: `Duration`, `Instant`
[INFO] [stdout]  --> src/attached_mount.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                 ^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `attached_mount::AttachedMount`
[INFO] [stdout]   --> src/driver.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 | use crate::{attached_mount::AttachedMount, instruments::*};
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `attached_mount::InternalAttachedMount`
[INFO] [stdout]   --> src/driver.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     attached_mount::InternalAttachedMount,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `processor::ProcessorMount`
[INFO] [stdout]   --> src/driver.rs:27:39
[INFO] [stdout]    |
[INFO] [stdout] 27 | use crate::{instruments::switches::*, processor::ProcessorMount};
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[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: 6 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: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.77s
[INFO] running `Command { std: "docker" "inspect" "38b7858c4136959910f72f2dfcfd3e81636fe748409c6b66dad3f69ac03c930e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38b7858c4136959910f72f2dfcfd3e81636fe748409c6b66dad3f69ac03c930e", kill_on_drop: false }`
[INFO] [stdout] 38b7858c4136959910f72f2dfcfd3e81636fe748409c6b66dad3f69ac03c930e