[INFO] fetching crate dynpool 0.0.2...
[INFO] checking dynpool-0.0.2 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate dynpool 0.0.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate dynpool 0.0.2 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dynpool 0.0.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate dynpool 0.0.2
[INFO] tweaked toml for crates.io crate dynpool 0.0.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate dynpool 0.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", 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] 7c9c2d26527bf8d005a9a8fc931a86dfe5081d9ba55b326bcad10d9eee815c1a
[INFO] running `Command { std: "docker" "start" "-a" "7c9c2d26527bf8d005a9a8fc931a86dfe5081d9ba55b326bcad10d9eee815c1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c9c2d26527bf8d005a9a8fc931a86dfe5081d9ba55b326bcad10d9eee815c1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c9c2d26527bf8d005a9a8fc931a86dfe5081d9ba55b326bcad10d9eee815c1a", kill_on_drop: false }`
[INFO] [stdout] 7c9c2d26527bf8d005a9a8fc931a86dfe5081d9ba55b326bcad10d9eee815c1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94dafd9205c32430aa7a161e030e34d02694c278a555bfc05867b672728bb67a
[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" "94dafd9205c32430aa7a161e030e34d02694c278a555bfc05867b672728bb67a", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking backoff v0.1.2
[INFO] [stderr]     Checking dynpool v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/internal.rs:302:54
[INFO] [stdout]     |
[INFO] [stdout] 302 |                     let previous_count = share.count.compare_and_swap(required_count, count_after, Relaxed);
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/internal.rs:302:54
[INFO] [stdout]     |
[INFO] [stdout] 302 |                     let previous_count = share.count.compare_and_swap(required_count, count_after, Relaxed);
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.35s
[INFO] running `Command { std: "docker" "inspect" "94dafd9205c32430aa7a161e030e34d02694c278a555bfc05867b672728bb67a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94dafd9205c32430aa7a161e030e34d02694c278a555bfc05867b672728bb67a", kill_on_drop: false }`
[INFO] [stdout] 94dafd9205c32430aa7a161e030e34d02694c278a555bfc05867b672728bb67a