[INFO] fetching crate variantly 0.4.0...
[INFO] building variantly-0.4.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate variantly 0.4.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate variantly 0.4.0
[INFO] finished tweaking crates.io crate variantly 0.4.0
[INFO] tweaked toml for crates.io crate variantly 0.4.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate variantly 0.4.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 22 packages to latest compatible versions
[INFO] [stderr]       Adding darling v0.11.0 (available: v0.21.3)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[INFO] [stderr]       Adding uuid v0.8.2 (available: v1.18.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32425776c8918ad2886206c41199305ce3fd95d4b58b1a8d8f93750a2647aee0
[INFO] running `Command { std: "docker" "start" "-a" "32425776c8918ad2886206c41199305ce3fd95d4b58b1a8d8f93750a2647aee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32425776c8918ad2886206c41199305ce3fd95d4b58b1a8d8f93750a2647aee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32425776c8918ad2886206c41199305ce3fd95d4b58b1a8d8f93750a2647aee0", kill_on_drop: false }`
[INFO] [stdout] 32425776c8918ad2886206c41199305ce3fd95d4b58b1a8d8f93750a2647aee0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4474d28fcceb50bc72f7f49866e646f79b02b8bb8226ebe119dd96e4cf928c3
[INFO] running `Command { std: "docker" "start" "-a" "d4474d28fcceb50bc72f7f49866e646f79b02b8bb8226ebe119dd96e4cf928c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling regex-syntax v0.8.6
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling darling_core v0.11.0
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling darling_macro v0.11.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling darling v0.11.0
[INFO] [stderr]    Compiling variantly v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `ident`, `attrs`, and `vis` are never read
[INFO] [stdout]   --> src/input.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct FieldParsed {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 21 |     pub ident: Option<Ident>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 22 |     pub ty: Type,
[INFO] [stdout] 23 |     pub attrs: Vec<Attribute>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 24 |     pub vis: Visibility,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FieldParsed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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 16.93s
[INFO] running `Command { std: "docker" "inspect" "d4474d28fcceb50bc72f7f49866e646f79b02b8bb8226ebe119dd96e4cf928c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4474d28fcceb50bc72f7f49866e646f79b02b8bb8226ebe119dd96e4cf928c3", kill_on_drop: false }`
[INFO] [stdout] d4474d28fcceb50bc72f7f49866e646f79b02b8bb8226ebe119dd96e4cf928c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bbcbd54c4078b543ddf84f1fbbbe86c1d34487a03e3299582887977e370fcbb
[INFO] running `Command { std: "docker" "start" "-a" "8bbcbd54c4078b543ddf84f1fbbbe86c1d34487a03e3299582887977e370fcbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling darling_core v0.11.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling darling_macro v0.11.0
[INFO] [stderr]    Compiling darling v0.11.0
[INFO] [stderr]    Compiling variantly v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `ident`, `attrs`, and `vis` are never read
[INFO] [stdout]   --> src/input.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct FieldParsed {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 21 |     pub ident: Option<Ident>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 22 |     pub ty: Type,
[INFO] [stdout] 23 |     pub attrs: Vec<Attribute>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 24 |     pub vis: Visibility,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FieldParsed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ident`, `attrs`, and `vis` are never read
[INFO] [stdout]   --> src/input.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct FieldParsed {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 21 |     pub ident: Option<Ident>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 22 |     pub ty: Type,
[INFO] [stdout] 23 |     pub attrs: Vec<Attribute>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 24 |     pub vis: Visibility,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FieldParsed` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 22.75s
[INFO] running `Command { std: "docker" "inspect" "8bbcbd54c4078b543ddf84f1fbbbe86c1d34487a03e3299582887977e370fcbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bbcbd54c4078b543ddf84f1fbbbe86c1d34487a03e3299582887977e370fcbb", kill_on_drop: false }`
[INFO] [stdout] 8bbcbd54c4078b543ddf84f1fbbbe86c1d34487a03e3299582887977e370fcbb