[INFO] fetching crate argopt-impl 0.3.0...
[INFO] checking argopt-impl-0.3.0 against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] extracting crate argopt-impl 0.3.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate argopt-impl 0.3.0
[INFO] finished tweaking crates.io crate argopt-impl 0.3.0
[INFO] tweaked toml for crates.io crate argopt-impl 0.3.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate argopt-impl 0.3.0 on toolchain 52995a223f2919dd3e2e427231db90a257350ded
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "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" "+52995a223f2919dd3e2e427231db90a257350ded" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to highest compatible versions
[INFO] [stderr]       Adding convert_case v0.5.0 (available: v0.12.0)
[INFO] [stderr]       Adding darling v0.13.4 (available: v0.24.1)
[INFO] [stderr]       Adding syn v1.0.109 (available: v3.0.9)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:c0af3998e971868164375a7dfb646c9933ddd1a3bdb00fa2041266763dc1eeab" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] bdf7ac538bebf1cc81ce1a49d3f3e03c3c04a0155dd369a7a9b60608857f8abc
[INFO] running `Command { std: "docker" "start" "bdf7ac538bebf1cc81ce1a49d3f3e03c3c04a0155dd369a7a9b60608857f8abc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdf7ac538bebf1cc81ce1a49d3f3e03c3c04a0155dd369a7a9b60608857f8abc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "bdf7ac538bebf1cc81ce1a49d3f3e03c3c04a0155dd369a7a9b60608857f8abc" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdf7ac538bebf1cc81ce1a49d3f3e03c3c04a0155dd369a7a9b60608857f8abc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "bdf7ac538bebf1cc81ce1a49d3f3e03c3c04a0155dd369a7a9b60608857f8abc" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.27
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking convert_case v0.5.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking proc-macro2 v1.0.107
[INFO] [stderr]     Checking quote v1.0.47
[INFO] [stderr]     Checking darling_core v0.13.4
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking darling v0.13.4
[INFO] [stderr]     Checking argopt-impl v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `SubCmdAttr` is never constructed
[INFO] [stdout]    --> src/lib.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 | struct SubCmdAttr {}
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/lib.rs:223:18
[INFO] [stdout]     |
[INFO] [stdout] 223 |               arg: quote! {
[INFO] [stdout]     |  __________________^
[INFO] [stdout] 224 | |                 #[clap(short, long, parse(from_occurrences), global = true)]
[INFO] [stdout] 225 | |                 #[doc = "Verbose mode (-v, -vv, -vvv, etc.)"]
[INFO] [stdout] 226 | |                 pub verbose: usize,
[INFO] [stdout] 227 | |             }
[INFO] [stdout] 228 | |             .into(),
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SubCmdAttr` is never constructed
[INFO] [stdout]    --> src/lib.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 | struct SubCmdAttr {}
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/lib.rs:223:18
[INFO] [stdout]     |
[INFO] [stdout] 223 |               arg: quote! {
[INFO] [stdout]     |  __________________^
[INFO] [stdout] 224 | |                 #[clap(short, long, parse(from_occurrences), global = true)]
[INFO] [stdout] 225 | |                 #[doc = "Verbose mode (-v, -vv, -vvv, etc.)"]
[INFO] [stdout] 226 | |                 pub verbose: usize,
[INFO] [stdout] 227 | |             }
[INFO] [stdout] 228 | |             .into(),
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `argopt-impl` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `argopt-impl` (lib test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "bdf7ac538bebf1cc81ce1a49d3f3e03c3c04a0155dd369a7a9b60608857f8abc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdf7ac538bebf1cc81ce1a49d3f3e03c3c04a0155dd369a7a9b60608857f8abc", kill_on_drop: false }`
[INFO] [stdout] bdf7ac538bebf1cc81ce1a49d3f3e03c3c04a0155dd369a7a9b60608857f8abc
