[INFO] fetching crate json_to_rust 0.2.0...
[INFO] checking json_to_rust-0.2.0 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate json_to_rust 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate json_to_rust 0.2.0 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json_to_rust 0.2.0
[INFO] finished tweaking crates.io crate json_to_rust 0.2.0
[INFO] tweaked toml for crates.io crate json_to_rust 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate json_to_rust 0.2.0 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pico-args v0.3.4
[INFO] [stderr]   Downloaded anyhow v1.0.33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c48a1b706693041999f4f9aa1459d6dfaaaf471a615b4ad7d49b435698b4f75d
[INFO] running `Command { std: "docker" "start" "-a" "c48a1b706693041999f4f9aa1459d6dfaaaf471a615b4ad7d49b435698b4f75d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c48a1b706693041999f4f9aa1459d6dfaaaf471a615b4ad7d49b435698b4f75d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c48a1b706693041999f4f9aa1459d6dfaaaf471a615b4ad7d49b435698b4f75d", kill_on_drop: false }`
[INFO] [stdout] c48a1b706693041999f4f9aa1459d6dfaaaf471a615b4ad7d49b435698b4f75d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4147fdd9c30e452d88d72d87a7ed8eb45f5d188a5de9275a348b3dfaabcfa966
[INFO] running `Command { std: "docker" "start" "-a" "4147fdd9c30e452d88d72d87a7ed8eb45f5d188a5de9275a348b3dfaabcfa966", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking pico-args v0.3.4
[INFO] [stderr]     Checking inflections v1.1.1
[INFO] [stderr]     Checking json_to_rust v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `WrapperApply` is never used
[INFO] [stdout]   --> src/util.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 | trait WrapperApply {
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NestedWrapper` is never constructed
[INFO] [stdout]   --> src/util.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct NestedWrapper {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NestedWrapper` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `WrapperApply` is never used
[INFO] [stdout]   --> src/util.rs:55:7
[INFO] [stdout]    |
[INFO] [stdout] 55 | trait WrapperApply {
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NestedWrapper` is never constructed
[INFO] [stdout]   --> src/util.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct NestedWrapper {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NestedWrapper` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `Command { std: "docker" "inspect" "4147fdd9c30e452d88d72d87a7ed8eb45f5d188a5de9275a348b3dfaabcfa966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4147fdd9c30e452d88d72d87a7ed8eb45f5d188a5de9275a348b3dfaabcfa966", kill_on_drop: false }`
[INFO] [stdout] 4147fdd9c30e452d88d72d87a7ed8eb45f5d188a5de9275a348b3dfaabcfa966