[INFO] fetching crate stateful_macro_rules 0.2.0...
[INFO] checking stateful_macro_rules-0.2.0 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate stateful_macro_rules 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate stateful_macro_rules 0.2.0
[INFO] finished tweaking crates.io crate stateful_macro_rules 0.2.0
[INFO] tweaked toml for crates.io crate stateful_macro_rules 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stateful_macro_rules 0.2.0 on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "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" "+a5689b034ad287112f709693384a37f1377eb9cc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to highest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 946e53d89d964f42cbe81cf1b5a8bf09c8a8d3866d32088e75a28f730c051039
[INFO] running `Command { std: "docker" "start" "946e53d89d964f42cbe81cf1b5a8bf09c8a8d3866d32088e75a28f730c051039", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "946e53d89d964f42cbe81cf1b5a8bf09c8a8d3866d32088e75a28f730c051039", 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" "946e53d89d964f42cbe81cf1b5a8bf09c8a8d3866d32088e75a28f730c051039" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "946e53d89d964f42cbe81cf1b5a8bf09c8a8d3866d32088e75a28f730c051039", 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" "946e53d89d964f42cbe81cf1b5a8bf09c8a8d3866d32088e75a28f730c051039" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking stateful_macro_rules v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/util.rs:64:7
[INFO] [stdout]    |
[INFO] [stdout] 64 |     L(&'a Literal),
[INFO] [stdout]    |     - ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 64 -     L(&'a Literal),
[INFO] [stdout] 64 +     L(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `delimiter_right` is never used
[INFO] [stdout]    --> src/util.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | trait GroupExt {
[INFO] [stdout]     |       -------- method in this trait
[INFO] [stdout] 102 |     fn delimiter_left(&self) -> char;
[INFO] [stdout] 103 |     fn delimiter_right(&self) -> char;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::Span`
[INFO] [stdout]   --> src/error.rs:34:16
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let span = span.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] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 34 -     let span = span.into();
[INFO] [stdout] 34 +     let span = span;
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 34 -     let span = span.into();
[INFO] [stdout] 34 +     let span = <proc_macro2::Span as Into<_>>::into(span);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stateful_macro_rules` (lib) due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/util.rs:64:7
[INFO] [stdout]    |
[INFO] [stdout] 64 |     L(&'a Literal),
[INFO] [stdout]    |     - ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 64 -     L(&'a Literal),
[INFO] [stdout] 64 +     L(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::Span`
[INFO] [stdout]   --> src/error.rs:34:16
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let span = span.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] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 34 -     let span = span.into();
[INFO] [stdout] 34 +     let span = span;
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 34 -     let span = span.into();
[INFO] [stdout] 34 +     let span = <proc_macro2::Span as Into<_>>::into(span);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stateful_macro_rules` (lib test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "946e53d89d964f42cbe81cf1b5a8bf09c8a8d3866d32088e75a28f730c051039", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "946e53d89d964f42cbe81cf1b5a8bf09c8a8d3866d32088e75a28f730c051039", kill_on_drop: false }`
[INFO] [stdout] 946e53d89d964f42cbe81cf1b5a8bf09c8a8d3866d32088e75a28f730c051039
