[INFO] fetching crate bitcoincore-rpc-async 4.0.1-alpha.2...
[INFO] checking bitcoincore-rpc-async-4.0.1-alpha.2 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate bitcoincore-rpc-async 4.0.1-alpha.2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate bitcoincore-rpc-async 4.0.1-alpha.2
[INFO] finished tweaking crates.io crate bitcoincore-rpc-async 4.0.1-alpha.2
[INFO] tweaked toml for crates.io crate bitcoincore-rpc-async 4.0.1-alpha.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate bitcoincore-rpc-async 4.0.1-alpha.2 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate bitcoincore-rpc-async 4.0.1-alpha.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2f5650dd4cd56909265969cab76fb252257f3cccb3a6a98a7846f7e3f0cb07c
[INFO] running `Command { std: "docker" "start" "-a" "d2f5650dd4cd56909265969cab76fb252257f3cccb3a6a98a7846f7e3f0cb07c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2f5650dd4cd56909265969cab76fb252257f3cccb3a6a98a7846f7e3f0cb07c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2f5650dd4cd56909265969cab76fb252257f3cccb3a6a98a7846f7e3f0cb07c", kill_on_drop: false }`
[INFO] [stdout] d2f5650dd4cd56909265969cab76fb252257f3cccb3a6a98a7846f7e3f0cb07c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1722cd173ef9c2c52e36d8505b6efb9605fc86a6a644148ed74c52fd2dedb302
[INFO] running `Command { std: "docker" "start" "-a" "1722cd173ef9c2c52e36d8505b6efb9605fc86a6a644148ed74c52fd2dedb302", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking smallvec v1.12.0
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking bech32 v0.8.1
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking base64-compat v1.0.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling sapio-secp256k1-sys v0.9.2
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]     Checking tokio v1.35.1
[INFO] [stderr]     Checking sapio-secp256k1 v0.28.1
[INFO] [stderr]     Checking bitcoin_hashes v0.10.0
[INFO] [stderr]     Checking jsonrpc-async v2.0.2
[INFO] [stderr]     Checking sapio-bitcoin v0.28.2
[INFO] [stderr]     Checking bitcoincore-rpc-json-async v4.0.1-alpha.2
[INFO] [stderr]     Checking bitcoincore-rpc-async v4.0.1-alpha.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `RetryClient` is never constructed
[INFO] [stdout]   --> examples/retry_client.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct RetryClient {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bitcoincore-rpc-async` (example "retry_client") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1722cd173ef9c2c52e36d8505b6efb9605fc86a6a644148ed74c52fd2dedb302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1722cd173ef9c2c52e36d8505b6efb9605fc86a6a644148ed74c52fd2dedb302", kill_on_drop: false }`
[INFO] [stdout] 1722cd173ef9c2c52e36d8505b6efb9605fc86a6a644148ed74c52fd2dedb302
