[INFO] fetching crate messy_json 0.2.3...
[INFO] checking messy_json-0.2.3 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate messy_json 0.2.3 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate messy_json 0.2.3 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate messy_json 0.2.3
[INFO] finished tweaking crates.io crate messy_json 0.2.3
[INFO] tweaked toml for crates.io crate messy_json 0.2.3 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate messy_json 0.2.3 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.124
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[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98148c3c47514924bd3c6a1cb23fa81a7da46a3bf055d07be5cfb62ac68348c5
[INFO] running `Command { std: "docker" "start" "-a" "98148c3c47514924bd3c6a1cb23fa81a7da46a3bf055d07be5cfb62ac68348c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98148c3c47514924bd3c6a1cb23fa81a7da46a3bf055d07be5cfb62ac68348c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98148c3c47514924bd3c6a1cb23fa81a7da46a3bf055d07be5cfb62ac68348c5", kill_on_drop: false }`
[INFO] [stdout] 98148c3c47514924bd3c6a1cb23fa81a7da46a3bf055d07be5cfb62ac68348c5
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26a55d306942697a31ab63757fb95e5386d0b0fb19d65cd010c7e5e0e714cc9b
[INFO] running `Command { std: "docker" "start" "-a" "26a55d306942697a31ab63757fb95e5386d0b0fb19d65cd010c7e5e0e714cc9b", kill_on_drop: false }`
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[INFO] [stderr]    Compiling syn v1.0.62
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[INFO] [stdout] warning: field `employment` is never read
[INFO] [stdout]   --> src/raw_value/tests/deserializer.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct DummyStruct {
[INFO] [stdout]    |        ----------- field in this struct
[INFO] [stdout] 35 |     person: DummyPerson,
[INFO] [stdout] 36 |     employment: DummyJob,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DummyStruct` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 21.60s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "26a55d306942697a31ab63757fb95e5386d0b0fb19d65cd010c7e5e0e714cc9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26a55d306942697a31ab63757fb95e5386d0b0fb19d65cd010c7e5e0e714cc9b", kill_on_drop: false }`
[INFO] [stdout] 26a55d306942697a31ab63757fb95e5386d0b0fb19d65cd010c7e5e0e714cc9b