[INFO] cloning repository https://github.com/ycysdf/variant_enum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ycysdf/variant_enum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fycysdf%2Fvariant_enum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fycysdf%2Fvariant_enum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 188243cd07c7c949e8d6a4b2ba32697967fe274a
[INFO] checking ycysdf/variant_enum against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fycysdf%2Fvariant_enum" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ycysdf/variant_enum on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ycysdf/variant_enum
[INFO] finished tweaking git repo https://github.com/ycysdf/variant_enum
[INFO] tweaked toml for git repo https://github.com/ycysdf/variant_enum written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ycysdf/variant_enum 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3cfeaaf8e80708fdc4bb267e81f1a7ef5223decffefff0548ffb59c2ff1d261
[INFO] running `Command { std: "docker" "start" "-a" "c3cfeaaf8e80708fdc4bb267e81f1a7ef5223decffefff0548ffb59c2ff1d261", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3cfeaaf8e80708fdc4bb267e81f1a7ef5223decffefff0548ffb59c2ff1d261", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3cfeaaf8e80708fdc4bb267e81f1a7ef5223decffefff0548ffb59c2ff1d261", kill_on_drop: false }`
[INFO] [stdout] c3cfeaaf8e80708fdc4bb267e81f1a7ef5223decffefff0548ffb59c2ff1d261
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 032eb7ae80778e6a6fefcc87b1b74b3302bd0c3e4b810841090f186d4bbd6552
[INFO] running `Command { std: "docker" "start" "-a" "032eb7ae80778e6a6fefcc87b1b74b3302bd0c3e4b810841090f186d4bbd6552", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking quote v1.0.36
[INFO] [stderr]     Checking syn v2.0.68
[INFO] [stderr]     Checking variant_enum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `parse_quote_spanned`
[INFO] [stdout]  --> src/lib.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 | use syn::{parse_macro_input, parse_quote, parse_quote_spanned, Expr, Field, FieldMutability, Fields, FieldsUnnamed, ItemEnum, Visibility};
[INFO] [stdout]   |                                           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling derive_more v0.99.18
[INFO] [stdout] warning: unused import: `parse_quote_spanned`
[INFO] [stdout]  --> src/lib.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 | use syn::{parse_macro_input, parse_quote, parse_quote_spanned, Expr, Field, FieldMutability, Fields, FieldsUnnamed, ItemEnum, Visibility};
[INFO] [stdout]   |                                           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parse_quote_spanned`
[INFO] [stdout]  --> src/lib.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 | use syn::{parse_macro_input, parse_quote, parse_quote_spanned, Expr, Field, FieldMutability, Fields, FieldsUnnamed, ItemEnum, Visibility};
[INFO] [stdout]   |                                           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `b`, `c`, and `d` are never read
[INFO] [stdout]   --> examples/readme.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout] 7  |     A {
[INFO] [stdout]    |     - fields in this struct
[INFO] [stdout] 8  |         pub a: u32,
[INFO] [stdout] 9  |         b: f32,
[INFO] [stdout]    |         ^
[INFO] [stdout] 10 |         c: usize,
[INFO] [stdout]    |         ^
[INFO] [stdout] 11 |         d: String,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `A` has derived impls for the traits `Clone` and `Debug`, 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: field `foo` is never read
[INFO] [stdout]   --> examples/readme.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     B {
[INFO] [stdout]    |     - field in this struct
[INFO] [stdout] 14 |         foo: String,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `B` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bar` is never read
[INFO] [stdout]   --> examples/readme.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     C {
[INFO] [stdout]    |     - field in this struct
[INFO] [stdout] 17 |         bar: bool,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `C` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings 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 5.51s
[INFO] running `Command { std: "docker" "inspect" "032eb7ae80778e6a6fefcc87b1b74b3302bd0c3e4b810841090f186d4bbd6552", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "032eb7ae80778e6a6fefcc87b1b74b3302bd0c3e4b810841090f186d4bbd6552", kill_on_drop: false }`
[INFO] [stdout] 032eb7ae80778e6a6fefcc87b1b74b3302bd0c3e4b810841090f186d4bbd6552