[INFO] fetching crate core_extensions_proc_macros 1.5.4...
[INFO] checking core_extensions_proc_macros-1.5.4 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate core_extensions_proc_macros 1.5.4 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate core_extensions_proc_macros 1.5.4
[INFO] finished tweaking crates.io crate core_extensions_proc_macros 1.5.4
[INFO] tweaked toml for crates.io crate core_extensions_proc_macros 1.5.4 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate core_extensions_proc_macros 1.5.4 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] crate crates.io crate core_extensions_proc_macros 1.5.4 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" "+a5689b034ad287112f709693384a37f1377eb9cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3d6a80d5dfa448a9e6e0b2e66fd2a085194c5cb38e42d0374828bfc98f3fc86c
[INFO] running `Command { std: "docker" "start" "3d6a80d5dfa448a9e6e0b2e66fd2a085194c5cb38e42d0374828bfc98f3fc86c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d6a80d5dfa448a9e6e0b2e66fd2a085194c5cb38e42d0374828bfc98f3fc86c", 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" "3d6a80d5dfa448a9e6e0b2e66fd2a085194c5cb38e42d0374828bfc98f3fc86c" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d6a80d5dfa448a9e6e0b2e66fd2a085194c5cb38e42d0374828bfc98f3fc86c", 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" "3d6a80d5dfa448a9e6e0b2e66fd2a085194c5cb38e42d0374828bfc98f3fc86c" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]     Checking core_extensions_proc_macros v1.5.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking proc-macro2 v1.0.101
[INFO] [stdout] warning: method `into_token_stream` is never used
[INFO] [stdout]    --> src/parsing_shared.rs:110:19
[INFO] [stdout]     |
[INFO] [stdout] 109 | impl MacroInvocation {
[INFO] [stdout]     | -------------------- method in this implementation
[INFO] [stdout] 110 |     pub(crate) fn into_token_stream(mut self) -> TokenStream {
[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: `TokenStream`
[INFO] [stdout]   --> src/lib.rs:95:37
[INFO] [stdout]    |
[INFO] [stdout] 95 |     let input_tokens: TokenStream = input_tokens.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] 95 -     let input_tokens: TokenStream = input_tokens.into();
[INFO] [stdout] 95 +     let input_tokens: TokenStream = input_tokens;
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 95 -     let input_tokens: TokenStream = input_tokens.into();
[INFO] [stdout] 95 +     let input_tokens: TokenStream = <TokenStream as Into<_>>::into(input_tokens);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `TokenStream`
[INFO] [stdout]    --> src/lib.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 | /     parsing_shared::parse_path_and_args("__priv_unwrap_bound", &mut iter, args, |args| {
[INFO] [stdout] 122 | |         args.extend(once(TokenTree::Group(Group::new(Delimiter::Parenthesis, ty))));
[INFO] [stdout] 123 | |     }).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] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 123 -     }).into()
[INFO] [stdout] 123 +     })
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 121 ~     <TokenStream as Into<_>>::into(parsing_shared::parse_path_and_args("__priv_unwrap_bound", &mut iter, args, |args| {
[INFO] [stdout] 122 |         args.extend(once(TokenTree::Group(Group::new(Delimiter::Parenthesis, ty))));
[INFO] [stdout] 123 ~     }))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `TokenStream`
[INFO] [stdout]    --> src/lib.rs:168:20
[INFO] [stdout]     |
[INFO] [stdout] 168 |     split_generics(input_tokens.into()).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] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 168 -     split_generics(input_tokens.into()).into()
[INFO] [stdout] 168 +     split_generics(input_tokens).into()
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 168 -     split_generics(input_tokens.into()).into()
[INFO] [stdout] 168 +     split_generics(<TokenStream as Into<_>>::into(input_tokens)).into()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `TokenStream`
[INFO] [stdout]    --> src/lib.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 |     split_generics(input_tokens.into()).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] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 168 -     split_generics(input_tokens.into()).into()
[INFO] [stdout] 168 +     split_generics(input_tokens.into())
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 168 -     split_generics(input_tokens.into()).into()
[INFO] [stdout] 168 +     <TokenStream as Into<_>>::into(split_generics(input_tokens.into()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `core_extensions_proc_macros` (lib) due to 4 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3d6a80d5dfa448a9e6e0b2e66fd2a085194c5cb38e42d0374828bfc98f3fc86c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d6a80d5dfa448a9e6e0b2e66fd2a085194c5cb38e42d0374828bfc98f3fc86c", kill_on_drop: false }`
[INFO] [stdout] 3d6a80d5dfa448a9e6e0b2e66fd2a085194c5cb38e42d0374828bfc98f3fc86c
