[INFO] fetching crate zen-engine 0.51.0...
[INFO] checking zen-engine-0.51.0 against try#0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9 for pr-147185
[INFO] extracting crate zen-engine 0.51.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate zen-engine 0.51.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate zen-engine 0.51.0
[INFO] tweaked toml for crates.io crate zen-engine 0.51.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zen-engine 0.51.0 on toolchain 0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zen-engine 0.51.0 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" "+0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6aaa05190f4bbdaf2028f21d83ca84342b3581addc9f20a82cae9cb7ae9988c1
[INFO] running `Command { std: "docker" "start" "-a" "6aaa05190f4bbdaf2028f21d83ca84342b3581addc9f20a82cae9cb7ae9988c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aaa05190f4bbdaf2028f21d83ca84342b3581addc9f20a82cae9cb7ae9988c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aaa05190f4bbdaf2028f21d83ca84342b3581addc9f20a82cae9cb7ae9988c1", kill_on_drop: false }`
[INFO] [stdout] 6aaa05190f4bbdaf2028f21d83ca84342b3581addc9f20a82cae9cb7ae9988c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5edead1ac7876f3469df7a35ac5e6eb038cc73f412e379ce9185c659681411b
[INFO] running `Command { std: "docker" "start" "-a" "b5edead1ac7876f3469df7a35ac5e6eb038cc73f412e379ce9185c659681411b", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.2.36
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[INFO] [stderr]     Checking zen-engine v0.51.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `FunctionResponse` is never constructed
[INFO] [stdout]    --> src/nodes/function/v2/mod.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub struct FunctionResponse {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FunctionResponse` is never constructed
[INFO] [stdout]    --> src/nodes/function/v2/mod.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub struct FunctionResponse {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `zen_engine::nodes::NodeError`
[INFO] [stdout]   --> tests/engine.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use zen_engine::nodes::NodeError;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `output` is never read
[INFO] [stdout]    --> tests/engine.rs:286:9
[INFO] [stdout]     |
[INFO] [stdout] 284 |     struct TestCase {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] 285 |         input: Variable,
[INFO] [stdout] 286 |         output: Variable,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint-dig v0.8.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "b5edead1ac7876f3469df7a35ac5e6eb038cc73f412e379ce9185c659681411b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5edead1ac7876f3469df7a35ac5e6eb038cc73f412e379ce9185c659681411b", kill_on_drop: false }`
[INFO] [stdout] b5edead1ac7876f3469df7a35ac5e6eb038cc73f412e379ce9185c659681411b