[INFO] fetching crate ron 0.9.0-alpha.0...
[INFO] checking ron-0.9.0-alpha.0 against try#0edd13c68435d50367c79cef43ac2768d2ec4f3d for pr-129422
[INFO] extracting crate ron 0.9.0-alpha.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate ron 0.9.0-alpha.0 on toolchain 0edd13c68435d50367c79cef43ac2768d2ec4f3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ron 0.9.0-alpha.0
[INFO] finished tweaking crates.io crate ron 0.9.0-alpha.0
[INFO] tweaked toml for crates.io crate ron 0.9.0-alpha.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate ron 0.9.0-alpha.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" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34cb2af20e69301b2c776bdb141b95c84751f0b69c8179da4d0c9bf6c7abd482
[INFO] running `Command { std: "docker" "start" "-a" "34cb2af20e69301b2c776bdb141b95c84751f0b69c8179da4d0c9bf6c7abd482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34cb2af20e69301b2c776bdb141b95c84751f0b69c8179da4d0c9bf6c7abd482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34cb2af20e69301b2c776bdb141b95c84751f0b69c8179da4d0c9bf6c7abd482", kill_on_drop: false }`
[INFO] [stdout] 34cb2af20e69301b2c776bdb141b95c84751f0b69c8179da4d0c9bf6c7abd482
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0c34a5cc4ead06f2e6b78ecc376a5f7b823609d5177f997b93e8df5bd371195
[INFO] running `Command { std: "docker" "start" "-a" "f0c34a5cc4ead06f2e6b78ecc376a5f7b823609d5177f997b93e8df5bd371195", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking inventory v0.3.15
[INFO] [stderr]     Checking heck v0.4.1
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling typetag-impl v0.2.16
[INFO] [stderr]     Checking erased-serde v0.4.3
[INFO] [stderr]     Checking bitflags v2.4.2
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking serde_json v1.0.114
[INFO] [stderr]     Checking option_set v0.2.0
[INFO] [stderr]     Checking serde_bytes v0.11.14
[INFO] [stderr]     Checking ron v0.9.0-alpha.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking typetag v0.2.16
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> tests/410_trailing_comma.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Newtype(i32);
[INFO] [stdout]   |        ------- ^^^
[INFO] [stdout]   |        |
[INFO] [stdout]   |        field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> tests/410_trailing_comma.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Tuple(i32, i32);
[INFO] [stdout]    |        ----- ^^^  ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        fields in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing these fields
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.43s
[INFO] running `Command { std: "docker" "inspect" "f0c34a5cc4ead06f2e6b78ecc376a5f7b823609d5177f997b93e8df5bd371195", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0c34a5cc4ead06f2e6b78ecc376a5f7b823609d5177f997b93e8df5bd371195", kill_on_drop: false }`
[INFO] [stdout] f0c34a5cc4ead06f2e6b78ecc376a5f7b823609d5177f997b93e8df5bd371195