[INFO] fetching crate serde-versions-derive 0.0.5...
[INFO] checking serde-versions-derive-0.0.5 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate serde-versions-derive 0.0.5 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate serde-versions-derive 0.0.5 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-versions-derive 0.0.5
[INFO] finished tweaking crates.io crate serde-versions-derive 0.0.5
[INFO] tweaked toml for crates.io crate serde-versions-derive 0.0.5 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5607e4ea6b4056018e244d915031dec04fefd6c524e90dbdf469f8a4bf71137
[INFO] running `Command { std: "docker" "start" "-a" "d5607e4ea6b4056018e244d915031dec04fefd6c524e90dbdf469f8a4bf71137", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5607e4ea6b4056018e244d915031dec04fefd6c524e90dbdf469f8a4bf71137", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5607e4ea6b4056018e244d915031dec04fefd6c524e90dbdf469f8a4bf71137", kill_on_drop: false }`
[INFO] [stdout] d5607e4ea6b4056018e244d915031dec04fefd6c524e90dbdf469f8a4bf71137
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3cb9747e2fc63ebb5d4c229065990ac61822b773c6725953ba5c36bfd49b9f5
[INFO] running `Command { std: "docker" "start" "-a" "d3cb9747e2fc63ebb5d4c229065990ac61822b773c6725953ba5c36bfd49b9f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking proc-macro2 v1.0.27
[INFO] [stderr]    Compiling serde-versions-derive v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking syn v1.0.73
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]  --> tests/test.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[version(3)]
[INFO] [stdout]   | ^^^^^^^^^^^^^
[INFO] [stdout] 5 | #[derive(Clone, Serialize, Deserialize)]
[INFO] [stdout]   |                 --------- the attribute is introduced here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout]   = note: this warning originates in the attribute macro `version` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> tests/test.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[version(33)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^
[INFO] [stdout] 13 | #[derive(Clone, Serialize, Deserialize)]
[INFO] [stdout]    |                 --------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout]    = note: this warning originates in the attribute macro `version` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.72s
[INFO] running `Command { std: "docker" "inspect" "d3cb9747e2fc63ebb5d4c229065990ac61822b773c6725953ba5c36bfd49b9f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3cb9747e2fc63ebb5d4c229065990ac61822b773c6725953ba5c36bfd49b9f5", kill_on_drop: false }`
[INFO] [stdout] d3cb9747e2fc63ebb5d4c229065990ac61822b773c6725953ba5c36bfd49b9f5