[INFO] cloning repository https://github.com/museun/json_to_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/museun/json_to_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmuseun%2Fjson_to_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmuseun%2Fjson_to_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a12d95fcb948a8d19ba8fe55566ee0ef4dd99bab
[INFO] checking museun/json_to_rust against master#cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9 for pr-136968
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmuseun%2Fjson_to_rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/museun/json_to_rust on toolchain cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/museun/json_to_rust
[INFO] finished tweaking git repo https://github.com/museun/json_to_rust
[INFO] tweaked toml for git repo https://github.com/museun/json_to_rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/museun/json_to_rust 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" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c7a1bc5b97d1270451d3f250fbb5d4f979618c120836d91c13950c6310449df
[INFO] running `Command { std: "docker" "start" "-a" "4c7a1bc5b97d1270451d3f250fbb5d4f979618c120836d91c13950c6310449df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c7a1bc5b97d1270451d3f250fbb5d4f979618c120836d91c13950c6310449df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c7a1bc5b97d1270451d3f250fbb5d4f979618c120836d91c13950c6310449df", kill_on_drop: false }`
[INFO] [stdout] 4c7a1bc5b97d1270451d3f250fbb5d4f979618c120836d91c13950c6310449df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+cfe9ffcd7c2d63fd3e0fc33a8d23ac4f0d50efe9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90c1b7ba2e92b071b5516e4dc6532730458ae0a97b4eee18021e424e37369970
[INFO] running `Command { std: "docker" "start" "-a" "90c1b7ba2e92b071b5516e4dc6532730458ae0a97b4eee18021e424e37369970", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking inflections v1.1.1
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking pico-args v0.3.4
[INFO] [stderr]    Compiling indexmap v1.6.0
[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: 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "90c1b7ba2e92b071b5516e4dc6532730458ae0a97b4eee18021e424e37369970", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90c1b7ba2e92b071b5516e4dc6532730458ae0a97b4eee18021e424e37369970", kill_on_drop: false }`
[INFO] [stdout] 90c1b7ba2e92b071b5516e4dc6532730458ae0a97b4eee18021e424e37369970