[INFO] fetching crate bitcoincore-rpc-async 3.0.0...
[INFO] checking bitcoincore-rpc-async-3.0.0 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate bitcoincore-rpc-async 3.0.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate bitcoincore-rpc-async 3.0.0 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitcoincore-rpc-async 3.0.0
[INFO] finished tweaking crates.io crate bitcoincore-rpc-async 3.0.0
[INFO] tweaked toml for crates.io crate bitcoincore-rpc-async 3.0.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate bitcoincore-rpc-async 3.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded secp256k1 v0.20.0
[INFO] [stderr]   Downloaded base64-compat v1.0.0
[INFO] [stderr]   Downloaded bitcoincore-rpc-json-async v3.0.0
[INFO] [stderr]   Downloaded jsonrpc-async v2.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cdb61df44a6a33692eae16176b65bde369aec63aa183fda1d19f9881117871d4
[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" "cdb61df44a6a33692eae16176b65bde369aec63aa183fda1d19f9881117871d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cdb61df44a6a33692eae16176b65bde369aec63aa183fda1d19f9881117871d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdb61df44a6a33692eae16176b65bde369aec63aa183fda1d19f9881117871d4", kill_on_drop: false }`
[INFO] [stdout] cdb61df44a6a33692eae16176b65bde369aec63aa183fda1d19f9881117871d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37a4e68bf17c5c55a6487e36e49151d0fba243c6fde596cd5fae10cd43dca45b
[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" "37a4e68bf17c5c55a6487e36e49151d0fba243c6fde596cd5fae10cd43dca45b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.119
[INFO] [stderr]    Compiling serde v1.0.119
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking bech32 v0.7.2
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking log v0.4.13
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking base64-compat v1.0.0
[INFO] [stderr]    Compiling tokio v1.0.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling secp256k1-sys v0.4.0
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]     Checking secp256k1 v0.20.0
[INFO] [stderr]     Checking bitcoin_hashes v0.9.4
[INFO] [stderr]     Checking jsonrpc-async v2.0.1
[INFO] [stderr]     Checking bitcoin v0.26.0
[INFO] [stderr]     Checking bitcoincore-rpc-json-async v3.0.0
[INFO] [stderr]     Checking bitcoincore-rpc-async v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `log`
[INFO] [stdout]   --> src/lib.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | use  log;
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde`
[INFO] [stdout]   --> src/lib.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | use  serde;
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]   --> src/lib.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 | use  serde_json;
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::value::RawValue`
[INFO] [stdout]   --> src/client.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use serde_json::value::RawValue;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log`
[INFO] [stdout]   --> src/lib.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | use  log;
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde`
[INFO] [stdout]   --> src/lib.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | use  serde;
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json`
[INFO] [stdout]   --> src/lib.rs:20:6
[INFO] [stdout]    |
[INFO] [stdout] 20 | use  serde_json;
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::value::RawValue`
[INFO] [stdout]   --> src/client.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use serde_json::value::RawValue;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 09s
[INFO] running `Command { std: "docker" "inspect" "37a4e68bf17c5c55a6487e36e49151d0fba243c6fde596cd5fae10cd43dca45b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37a4e68bf17c5c55a6487e36e49151d0fba243c6fde596cd5fae10cd43dca45b", kill_on_drop: false }`
[INFO] [stdout] 37a4e68bf17c5c55a6487e36e49151d0fba243c6fde596cd5fae10cd43dca45b