[INFO] fetching crate crossflow_derive 0.0.6...
[INFO] checking crossflow_derive-0.0.6 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate crossflow_derive 0.0.6 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate crossflow_derive 0.0.6
[INFO] finished tweaking crates.io crate crossflow_derive 0.0.6
[INFO] tweaked toml for crates.io crate crossflow_derive 0.0.6 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate crossflow_derive 0.0.6 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 crossflow_derive 0.0.6 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-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] ee440662f790bd1b2f8b59f7e516e1eeebdd172a2a844f4e9d5bdeaf7b6b0136
[INFO] running `Command { std: "docker" "start" "ee440662f790bd1b2f8b59f7e516e1eeebdd172a2a844f4e9d5bdeaf7b6b0136", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee440662f790bd1b2f8b59f7e516e1eeebdd172a2a844f4e9d5bdeaf7b6b0136", 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" "ee440662f790bd1b2f8b59f7e516e1eeebdd172a2a844f4e9d5bdeaf7b6b0136" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee440662f790bd1b2f8b59f7e516e1eeebdd172a2a844f4e9d5bdeaf7b6b0136", 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" "ee440662f790bd1b2f8b59f7e516e1eeebdd172a2a844f4e9d5bdeaf7b6b0136" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.104
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]     Checking unicode-ident v1.0.22
[INFO] [stderr]     Checking syn v2.0.111
[INFO] [stderr]     Checking crossflow_derive v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]   --> src/derive_buffer.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 |     Ok(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] 75 -     Ok(tokens.into())
[INFO] [stdout] 75 +     Ok(tokens)
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 75 -     Ok(tokens.into())
[INFO] [stdout] 75 +     Ok(<proc_macro2::TokenStream as Into<_>>::into(tokens))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/derive_buffer.rs:140:8
[INFO] [stdout]     |
[INFO] [stdout] 140 |     Ok(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] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 140 -     Ok(tokens.into())
[INFO] [stdout] 140 +     Ok(tokens)
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 140 -     Ok(tokens.into())
[INFO] [stdout] 140 +     Ok(<proc_macro2::TokenStream as Into<_>>::into(tokens))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/derive_buffer.rs:311:5
[INFO] [stdout]     |
[INFO] [stdout] 311 | /     quote! {
[INFO] [stdout] 312 | |         impl #impl_generics #struct_ident #ty_generics #where_clause {
[INFO] [stdout] 313 | |             #buffer_struct_vis fn select_buffers(
[INFO] [stdout] 314 | |                 #(
[INFO] [stdout] ...   |
[INFO] [stdout] 326 | |     .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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/derive_buffer.rs:378:8
[INFO] [stdout]     |
[INFO] [stdout] 378 |       Ok(quote! {
[INFO] [stdout]     |  ________^
[INFO] [stdout] 379 | |         impl #impl_generics ::crossflow::BufferMapLayout for #struct_ident #ty_generics #where_clause {
[INFO] [stdout] 380 | |             fn try_from_buffer_map(buffers: &::crossflow::BufferMap) -> Result<Self, ::crossflow::IncompatibleLayout> {
[INFO] [stdout] 381 | |                 let mut compatibility = ::crossflow::IncompatibleLayout::default();
[INFO] [stdout] ...   |
[INFO] [stdout] 422 | |     .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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/derive_buffer.rs:437:8
[INFO] [stdout]     |
[INFO] [stdout] 437 |       Ok(quote! {
[INFO] [stdout]     |  ________^
[INFO] [stdout] 438 | |         impl #impl_generics ::crossflow::Joining for #struct_ident #ty_generics #where_clause {
[INFO] [stdout] 439 | |             type Item = #item_struct_ident #ty_generics;
[INFO] [stdout] ...   |
[INFO] [stdout] 456 | |     .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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/derive_buffer.rs:469:8
[INFO] [stdout]     |
[INFO] [stdout] 469 |       Ok(quote! {
[INFO] [stdout]     |  ________^
[INFO] [stdout] 470 | |         impl #impl_generics ::crossflow::Accessing for #struct_ident #ty_generics #where_clause {
[INFO] [stdout] 471 | |             type Key = #key_struct_ident #ty_generics;
[INFO] [stdout] ...   |
[INFO] [stdout] 507 | |     }.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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]   --> src/derive_buffer.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 |     Ok(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] 75 -     Ok(tokens.into())
[INFO] [stdout] 75 +     Ok(tokens)
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 75 -     Ok(tokens.into())
[INFO] [stdout] 75 +     Ok(<proc_macro2::TokenStream as Into<_>>::into(tokens))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/derive_buffer.rs:140:8
[INFO] [stdout]     |
[INFO] [stdout] 140 |     Ok(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] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 140 -     Ok(tokens.into())
[INFO] [stdout] 140 +     Ok(tokens)
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 140 -     Ok(tokens.into())
[INFO] [stdout] 140 +     Ok(<proc_macro2::TokenStream as Into<_>>::into(tokens))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/derive_buffer.rs:311:5
[INFO] [stdout]     |
[INFO] [stdout] 311 | /     quote! {
[INFO] [stdout] 312 | |         impl #impl_generics #struct_ident #ty_generics #where_clause {
[INFO] [stdout] 313 | |             #buffer_struct_vis fn select_buffers(
[INFO] [stdout] 314 | |                 #(
[INFO] [stdout] ...   |
[INFO] [stdout] 326 | |     .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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/derive_buffer.rs:378:8
[INFO] [stdout]     |
[INFO] [stdout] 378 |       Ok(quote! {
[INFO] [stdout]     |  ________^
[INFO] [stdout] 379 | |         impl #impl_generics ::crossflow::BufferMapLayout for #struct_ident #ty_generics #where_clause {
[INFO] [stdout] 380 | |             fn try_from_buffer_map(buffers: &::crossflow::BufferMap) -> Result<Self, ::crossflow::IncompatibleLayout> {
[INFO] [stdout] 381 | |                 let mut compatibility = ::crossflow::IncompatibleLayout::default();
[INFO] [stdout] ...   |
[INFO] [stdout] 422 | |     .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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/derive_buffer.rs:437:8
[INFO] [stdout]     |
[INFO] [stdout] 437 |       Ok(quote! {
[INFO] [stdout]     |  ________^
[INFO] [stdout] 438 | |         impl #impl_generics ::crossflow::Joining for #struct_ident #ty_generics #where_clause {
[INFO] [stdout] 439 | |             type Item = #item_struct_ident #ty_generics;
[INFO] [stdout] ...   |
[INFO] [stdout] 456 | |     .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] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/derive_buffer.rs:469:8
[INFO] [stdout]     |
[INFO] [stdout] 469 |       Ok(quote! {
[INFO] [stdout]     |  ________^
[INFO] [stdout] 470 | |         impl #impl_generics ::crossflow::Accessing for #struct_ident #ty_generics #where_clause {
[INFO] [stdout] 471 | |             type Key = #key_struct_ident #ty_generics;
[INFO] [stdout] ...   |
[INFO] [stdout] 507 | |     }.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] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crossflow_derive` (lib test) due to 6 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `crossflow_derive` (lib) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "ee440662f790bd1b2f8b59f7e516e1eeebdd172a2a844f4e9d5bdeaf7b6b0136", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee440662f790bd1b2f8b59f7e516e1eeebdd172a2a844f4e9d5bdeaf7b6b0136", kill_on_drop: false }`
[INFO] [stdout] ee440662f790bd1b2f8b59f7e516e1eeebdd172a2a844f4e9d5bdeaf7b6b0136
