[INFO] fetching crate ff-derive-arcium-fork 0.13.2...
[INFO] checking ff-derive-arcium-fork-0.13.2 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate ff-derive-arcium-fork 0.13.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate ff-derive-arcium-fork 0.13.2
[INFO] finished tweaking crates.io crate ff-derive-arcium-fork 0.13.2
[INFO] tweaked toml for crates.io crate ff-derive-arcium-fork 0.13.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ff-derive-arcium-fork 0.13.2 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 10 packages to highest compatible versions
[INFO] [stderr]       Adding num-bigint v0.3.3 (available: v0.5.1)
[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" "+a5689b034ad287112f709693384a37f1377eb9cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 46fdb5cf026738ddbb8e0737ce3e67225b93a2e1f8abd3f7ac70c1dcb7ab9509
[INFO] running `Command { std: "docker" "start" "46fdb5cf026738ddbb8e0737ce3e67225b93a2e1f8abd3f7ac70c1dcb7ab9509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46fdb5cf026738ddbb8e0737ce3e67225b93a2e1f8abd3f7ac70c1dcb7ab9509", 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" "46fdb5cf026738ddbb8e0737ce3e67225b93a2e1f8abd3f7ac70c1dcb7ab9509" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46fdb5cf026738ddbb8e0737ce3e67225b93a2e1f8abd3f7ac70c1dcb7ab9509", 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" "46fdb5cf026738ddbb8e0737ce3e67225b93a2e1f8abd3f7ac70c1dcb7ab9509" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking cfg-if v1.0.5
[INFO] [stderr]     Checking num-integer v0.1.47
[INFO] [stderr]     Checking addchain-arcium-fork v0.2.1
[INFO] [stderr]     Checking ff-derive-arcium-fork v0.13.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/lib.rs:160:16
[INFO] [stdout]     |
[INFO] [stdout] 160 |         return err.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] 160 -         return err.into();
[INFO] [stdout] 160 +         return err;
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 160 -         return err.into();
[INFO] [stdout] 160 +         return <proc_macro2::TokenStream as Into<_>>::into(err);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/lib.rs:186:5
[INFO] [stdout]     |
[INFO] [stdout] 186 |     gen.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] 186 -     gen.into()
[INFO] [stdout] 186 +     gen
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 186 -     gen.into()
[INFO] [stdout] 186 +     <proc_macro2::TokenStream as Into<_>>::into(gen)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]     --> src/lib.rs:1421:13
[INFO] [stdout]      |
[INFO] [stdout] 1421 |         let y = prime_field_2(blabla);
[INFO] [stdout]      |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` (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:160:16
[INFO] [stdout]     |
[INFO] [stdout] 160 |         return err.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] 160 -         return err.into();
[INFO] [stdout] 160 +         return err;
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 160 -         return err.into();
[INFO] [stdout] 160 +         return <proc_macro2::TokenStream as Into<_>>::into(err);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/lib.rs:186:5
[INFO] [stdout]     |
[INFO] [stdout] 186 |     gen.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] 186 -     gen.into()
[INFO] [stdout] 186 +     gen
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 186 -     gen.into()
[INFO] [stdout] 186 +     <proc_macro2::TokenStream as Into<_>>::into(gen)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ff-derive-arcium-fork` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `ff-derive-arcium-fork` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "46fdb5cf026738ddbb8e0737ce3e67225b93a2e1f8abd3f7ac70c1dcb7ab9509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46fdb5cf026738ddbb8e0737ce3e67225b93a2e1f8abd3f7ac70c1dcb7ab9509", kill_on_drop: false }`
[INFO] [stdout] 46fdb5cf026738ddbb8e0737ce3e67225b93a2e1f8abd3f7ac70c1dcb7ab9509
