[INFO] fetching crate decanter-derive 0.1.6...
[INFO] checking decanter-derive-0.1.6 against master#f167efad2f51088d86180ee89177b3d7c9e7c2f5 for pr-129543
[INFO] extracting crate decanter-derive 0.1.6 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate decanter-derive 0.1.6 on toolchain f167efad2f51088d86180ee89177b3d7c9e7c2f5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate decanter-derive 0.1.6
[INFO] finished tweaking crates.io crate decanter-derive 0.1.6
[INFO] tweaked toml for crates.io crate decanter-derive 0.1.6 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ef1b2bde9db009707fc612031e2f0d8a6b5788e6c108fd7a7873356c41da1fd
[INFO] running `Command { std: "docker" "start" "-a" "1ef1b2bde9db009707fc612031e2f0d8a6b5788e6c108fd7a7873356c41da1fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ef1b2bde9db009707fc612031e2f0d8a6b5788e6c108fd7a7873356c41da1fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ef1b2bde9db009707fc612031e2f0d8a6b5788e6c108fd7a7873356c41da1fd", kill_on_drop: false }`
[INFO] [stdout] 1ef1b2bde9db009707fc612031e2f0d8a6b5788e6c108fd7a7873356c41da1fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+f167efad2f51088d86180ee89177b3d7c9e7c2f5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e659806466a8f7506b48810bb352b0c38bc98fc3d97ad7a5f011b21e61af6b1
[INFO] running `Command { std: "docker" "start" "-a" "4e659806466a8f7506b48810bb352b0c38bc98fc3d97ad7a5f011b21e61af6b1", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]    Compiling serde_json v1.0.127
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stderr]     Checking serde v1.0.209
[INFO] [stderr]     Checking decanter-derive v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `non_exhaustive` is never read
[INFO] [stdout]   --> src/internal/attr/container.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Container {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 36 |     pub non_exhaustive: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Container` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `non_exhaustive` is never read
[INFO] [stdout]   --> src/internal/attr/container.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Container {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 36 |     pub non_exhaustive: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Container` has a derived impl for the trait `Clone`, but this is 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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.99s
[INFO] running `Command { std: "docker" "inspect" "4e659806466a8f7506b48810bb352b0c38bc98fc3d97ad7a5f011b21e61af6b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e659806466a8f7506b48810bb352b0c38bc98fc3d97ad7a5f011b21e61af6b1", kill_on_drop: false }`
[INFO] [stdout] 4e659806466a8f7506b48810bb352b0c38bc98fc3d97ad7a5f011b21e61af6b1