[INFO] fetching crate sp-variant 3.5.3...
[INFO] building sp-variant-3.5.3 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate sp-variant 3.5.3 into /workspace/builds/worker-4-tc1/source
[INFO] removed /workspace/builds/worker-4-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate sp-variant 3.5.3
[INFO] finished tweaking crates.io crate sp-variant 3.5.3
[INFO] tweaked toml for crates.io crate sp-variant 3.5.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sp-variant 3.5.3 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sp-variant 3.5.3 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.10
[INFO] [stderr]   Downloaded ryu v1.0.14
[INFO] [stderr]   Downloaded enum-iterator-derive v1.2.1
[INFO] [stderr]   Downloaded enum-iterator v1.4.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.63
[INFO] [stderr]   Downloaded is-terminal v0.4.8
[INFO] [stderr]   Downloaded serde_derive v1.0.166
[INFO] [stderr]   Downloaded bitflags v2.3.3
[INFO] [stderr]   Downloaded quote v1.0.29
[INFO] [stderr]   Downloaded rustix v0.37.22
[INFO] [stderr]   Downloaded serde v1.0.166
[INFO] [stderr]   Downloaded syn v2.0.23
[INFO] [stderr]   Downloaded rustix v0.38.2
[INFO] [stderr]   Downloaded linux-raw-sys v0.4.3
[INFO] [stderr]   Downloaded itoa v1.0.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d41ff6e94216c70cc9b9acd3867756d1fe162892bbb2e46a0e6abc500c4dffa3
[INFO] running `Command { std: "docker" "start" "-a" "d41ff6e94216c70cc9b9acd3867756d1fe162892bbb2e46a0e6abc500c4dffa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d41ff6e94216c70cc9b9acd3867756d1fe162892bbb2e46a0e6abc500c4dffa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d41ff6e94216c70cc9b9acd3867756d1fe162892bbb2e46a0e6abc500c4dffa3", kill_on_drop: false }`
[INFO] [stdout] d41ff6e94216c70cc9b9acd3867756d1fe162892bbb2e46a0e6abc500c4dffa3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97ca279f0fbbe856e885165b0f37784779464e51648410e2b6a03ce5bd8c726a
[INFO] running `Command { std: "docker" "start" "-a" "97ca279f0fbbe856e885165b0f37784779464e51648410e2b6a03ce5bd8c726a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.63
[INFO] [stderr]    Compiling unicode-ident v1.0.10
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling rustix v0.38.2
[INFO] [stderr]    Compiling linux-raw-sys v0.4.3
[INFO] [stderr]    Compiling bitflags v2.3.3
[INFO] [stderr]    Compiling serde v1.0.166
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling anstyle-parse v0.2.1
[INFO] [stderr]    Compiling rustix v0.37.22
[INFO] [stderr]    Compiling serde_json v1.0.99
[INFO] [stderr]    Compiling aho-corasick v1.0.2
[INFO] [stderr]    Compiling ryu v1.0.14
[INFO] [stderr]    Compiling regex-syntax v0.7.2
[INFO] [stderr]    Compiling itoa v1.0.8
[INFO] [stderr]    Compiling syn v2.0.23
[INFO] [stderr]    Compiling is-terminal v0.4.8
[INFO] [stderr]    Compiling anstream v0.3.2
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling nix v0.26.2
[INFO] [stderr]    Compiling clap_builder v4.3.10
[INFO] [stderr]    Compiling regex v1.8.4
[INFO] [stderr]    Compiling clap v4.3.10
[INFO] [stderr]    Compiling tempfile v3.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling enum-iterator-derive v1.2.1
[INFO] [stderr]    Compiling clap_derive v4.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.166
[INFO] [stderr]    Compiling enum-iterator v1.4.1
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling sp-variant v3.5.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `VariantFormatTop` is never constructed
[INFO] [stdout]   --> rust/lib.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | struct VariantFormatTop {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.99s
[INFO] running `Command { std: "docker" "inspect" "97ca279f0fbbe856e885165b0f37784779464e51648410e2b6a03ce5bd8c726a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97ca279f0fbbe856e885165b0f37784779464e51648410e2b6a03ce5bd8c726a", kill_on_drop: false }`
[INFO] [stdout] 97ca279f0fbbe856e885165b0f37784779464e51648410e2b6a03ce5bd8c726a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be965c90031bd6d788c3b16245534677e245572170e23570a10ad003acd5998d
[INFO] running `Command { std: "docker" "start" "-a" "be965c90031bd6d788c3b16245534677e245572170e23570a10ad003acd5998d", kill_on_drop: false }`
[INFO] [stderr]    Compiling sp-variant v3.5.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `VariantFormatTop` is never constructed
[INFO] [stdout]   --> rust/lib.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | struct VariantFormatTop {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VariantFormatTop` is never constructed
[INFO] [stdout]   --> rust/lib.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | struct VariantFormatTop {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a module
[INFO] [stdout]   --> rust/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub mod tests;
[INFO] [stdout]    | ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> rust/lib.rs:7:9
[INFO] [stdout]    |
[INFO] [stdout]  7 | #![warn(missing_docs)]
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.98s
[INFO] running `Command { std: "docker" "inspect" "be965c90031bd6d788c3b16245534677e245572170e23570a10ad003acd5998d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be965c90031bd6d788c3b16245534677e245572170e23570a10ad003acd5998d", kill_on_drop: false }`
[INFO] [stdout] be965c90031bd6d788c3b16245534677e245572170e23570a10ad003acd5998d