[INFO] fetching crate utxorpc 0.5.0...
[INFO] checking utxorpc-0.5.0 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate utxorpc 0.5.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate utxorpc 0.5.0 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate utxorpc 0.5.0
[INFO] finished tweaking crates.io crate utxorpc 0.5.0
[INFO] tweaked toml for crates.io crate utxorpc 0.5.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate utxorpc 0.5.0 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prettyplease v0.2.17
[INFO] [stderr]   Downloaded pbjson v0.6.0
[INFO] [stderr]   Downloaded pbjson-build v0.6.2
[INFO] [stderr]   Downloaded tracing-attributes v0.1.24
[INFO] [stderr]   Downloaded serde_derive v1.0.161
[INFO] [stderr]   Downloaded pbjson-types v0.6.0
[INFO] [stderr]   Downloaded serde v1.0.161
[INFO] [stderr]   Downloaded utxorpc-spec v0.8.0
[INFO] [stderr]   Downloaded ring v0.17.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c44688db7fca58a3face25257001ed88be59b8e0b5b7d658bd1598ffb29907e8
[INFO] running `Command { std: "docker" "start" "-a" "c44688db7fca58a3face25257001ed88be59b8e0b5b7d658bd1598ffb29907e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c44688db7fca58a3face25257001ed88be59b8e0b5b7d658bd1598ffb29907e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c44688db7fca58a3face25257001ed88be59b8e0b5b7d658bd1598ffb29907e8", kill_on_drop: false }`
[INFO] [stdout] c44688db7fca58a3face25257001ed88be59b8e0b5b7d658bd1598ffb29907e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ac73dd7304dbb8e90a6f583e8e3f14c3ee6d8654cd92ad3742839d1f9c5176b
[INFO] running `Command { std: "docker" "start" "-a" "3ac73dd7304dbb8e90a6f583e8e3f14c3ee6d8654cd92ad3742839d1f9c5176b", kill_on_drop: false }`
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[INFO] [stderr]    Compiling pbjson-build v0.6.2
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[INFO] [stderr]     Checking tonic v0.11.0
[INFO] [stderr]     Checking utxorpc-spec v0.8.0
[INFO] [stderr]     Checking utxorpc v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Bytes`
[INFO] [stdout]  --> src/lib.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 |     str::{Bytes, FromStr},
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Bytes`
[INFO] [stdout]  --> src/lib.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 |     str::{Bytes, FromStr},
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `spec::sync::BlockRef`
[INFO] [stdout]  --> examples/follow-tip.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use utxorpc::{spec::sync::BlockRef, CardanoSyncClient, ClientBuilder, Error, TipEvent};
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.06s
[INFO] running `Command { std: "docker" "inspect" "3ac73dd7304dbb8e90a6f583e8e3f14c3ee6d8654cd92ad3742839d1f9c5176b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ac73dd7304dbb8e90a6f583e8e3f14c3ee6d8654cd92ad3742839d1f9c5176b", kill_on_drop: false }`
[INFO] [stdout] 3ac73dd7304dbb8e90a6f583e8e3f14c3ee6d8654cd92ad3742839d1f9c5176b