[INFO] fetching crate serry-derive 0.1.0...
[INFO] checking serry-derive-0.1.0 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate serry-derive 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate serry-derive 0.1.0
[INFO] finished tweaking crates.io crate serry-derive 0.1.0
[INFO] tweaked toml for crates.io crate serry-derive 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serry-derive 0.1.0 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 4 packages to highest compatible versions
[INFO] [stderr]       Adding syn v2.0.119 (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-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] 1d2432ef8479f8ba26345a34398674855a833c5a374fbc8956d7e237e305b849
[INFO] running `Command { std: "docker" "start" "1d2432ef8479f8ba26345a34398674855a833c5a374fbc8956d7e237e305b849", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d2432ef8479f8ba26345a34398674855a833c5a374fbc8956d7e237e305b849", 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" "1d2432ef8479f8ba26345a34398674855a833c5a374fbc8956d7e237e305b849" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d2432ef8479f8ba26345a34398674855a833c5a374fbc8956d7e237e305b849", 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" "1d2432ef8479f8ba26345a34398674855a833c5a374fbc8956d7e237e305b849" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v2.0.119
[INFO] [stderr]     Checking serry-derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `all` is never used
[INFO] [stdout]   --> src/sized.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     impl Predict {
[INFO] [stdout]    |     ------------ associated function in this implementation
[INFO] [stdout] 29 |         fn all(v: impl ToTokens) -> Self {
[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/read.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 106 | /                 (quote! {
[INFO] [stdout] 107 | |                     #(#reading)*;
[INFO] [stdout] 108 | |                     Ok(#target_type {
[INFO] [stdout] 109 | |                         #(#identifiers),*
[INFO] [stdout] 110 | |                     })
[INFO] [stdout] 111 | |                 })
[INFO] [stdout] 112 | |                 .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] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/read.rs:242:8
[INFO] [stdout]     |
[INFO] [stdout] 242 |       Ok(quote! {
[INFO] [stdout]     |  ________^
[INFO] [stdout] 243 | |         const _: () = {
[INFO] [stdout] 244 | |             use ::serry::SerryError as _Error;
[INFO] [stdout] 245 | |             #[automatically_derived]
[INFO] [stdout] ...   |
[INFO] [stdout] 251 | |         };
[INFO] [stdout] 252 | |     }.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/sized.rs:238:8
[INFO] [stdout]     |
[INFO] [stdout] 238 |       Ok(quote! {
[INFO] [stdout]     |  ________^
[INFO] [stdout] 239 | |         const _: () = {
[INFO] [stdout] 240 | |             #[automatically_derived]
[INFO] [stdout] 241 | |             impl #impl_generics ::serry::repr::SerrySized for #ident #ty_generics #where_clause {
[INFO] [stdout] ...   |
[INFO] [stdout] 259 | |     .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/write.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 139 |       Ok(quote! {
[INFO] [stdout]     |  ________^
[INFO] [stdout] 140 | |         const _: () = {
[INFO] [stdout] 141 | |             #[automatically_derived]
[INFO] [stdout] 142 | |             impl #impl_generics ::serry::write::SerryWrite for #ident #ty_generics #where_clause {
[INFO] [stdout] ...   |
[INFO] [stdout] 148 | |         };
[INFO] [stdout] 149 | |     }.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] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:51:27
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn process_fields(fields: &Fields, field_order: FieldOrder) -> Option<ProcessedFields> {
[INFO] [stdout]    |                           ^^^^^^^ the lifetime is elided here         ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn process_fields(fields: &Fields, field_order: FieldOrder) -> Option<ProcessedFields<'_>> {
[INFO] [stdout]    |                                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:302:27
[INFO] [stdout]     |
[INFO] [stdout] 302 | fn parse_serry_attr(attr: &Attribute, fields: SerryAttrFields) -> Result<SerryAttr, Error> {
[INFO] [stdout]     |                           ^^^^^^^^^^ the lifetime is elided here         ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 302 | fn parse_serry_attr(attr: &Attribute, fields: SerryAttrFields) -> Result<SerryAttr<'_>, Error> {
[INFO] [stdout]     |                                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:410:12
[INFO] [stdout]     |
[INFO] [stdout] 410 |     attrs: &Vec<Attribute>,
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 411 |     fields: SerryAttrFields,
[INFO] [stdout] 412 | ) -> Result<SerryAttr, Error> {
[INFO] [stdout]     |             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 412 | ) -> Result<SerryAttr<'_>, Error> {
[INFO] [stdout]     |                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serry-derive` (lib test) due to 4 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: associated function `all` is never used
[INFO] [stdout]   --> src/sized.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     impl Predict {
[INFO] [stdout]    |     ------------ associated function in this implementation
[INFO] [stdout] 29 |         fn all(v: impl ToTokens) -> Self {
[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/read.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 106 | /                 (quote! {
[INFO] [stdout] 107 | |                     #(#reading)*;
[INFO] [stdout] 108 | |                     Ok(#target_type {
[INFO] [stdout] 109 | |                         #(#identifiers),*
[INFO] [stdout] 110 | |                     })
[INFO] [stdout] 111 | |                 })
[INFO] [stdout] 112 | |                 .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] error: useless conversion to the same type: `proc_macro2::TokenStream`
[INFO] [stdout]    --> src/read.rs:242:8
[INFO] [stdout]     |
[INFO] [stdout] 242 |       Ok(quote! {
[INFO] [stdout]     |  ________^
[INFO] [stdout] 243 | |         const _: () = {
[INFO] [stdout] 244 | |             use ::serry::SerryError as _Error;
[INFO] [stdout] 245 | |             #[automatically_derived]
[INFO] [stdout] ...   |
[INFO] [stdout] 251 | |         };
[INFO] [stdout] 252 | |     }.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/sized.rs:238:8
[INFO] [stdout]     |
[INFO] [stdout] 238 |       Ok(quote! {
[INFO] [stdout]     |  ________^
[INFO] [stdout] 239 | |         const _: () = {
[INFO] [stdout] 240 | |             #[automatically_derived]
[INFO] [stdout] 241 | |             impl #impl_generics ::serry::repr::SerrySized for #ident #ty_generics #where_clause {
[INFO] [stdout] ...   |
[INFO] [stdout] 259 | |     .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/write.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout] 139 |       Ok(quote! {
[INFO] [stdout]     |  ________^
[INFO] [stdout] 140 | |         const _: () = {
[INFO] [stdout] 141 | |             #[automatically_derived]
[INFO] [stdout] 142 | |             impl #impl_generics ::serry::write::SerryWrite for #ident #ty_generics #where_clause {
[INFO] [stdout] ...   |
[INFO] [stdout] 148 | |         };
[INFO] [stdout] 149 | |     }.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] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lib.rs:51:27
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn process_fields(fields: &Fields, field_order: FieldOrder) -> Option<ProcessedFields> {
[INFO] [stdout]    |                           ^^^^^^^ the lifetime is elided here         ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn process_fields(fields: &Fields, field_order: FieldOrder) -> Option<ProcessedFields<'_>> {
[INFO] [stdout]    |                                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:302:27
[INFO] [stdout]     |
[INFO] [stdout] 302 | fn parse_serry_attr(attr: &Attribute, fields: SerryAttrFields) -> Result<SerryAttr, Error> {
[INFO] [stdout]     |                           ^^^^^^^^^^ the lifetime is elided here         ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 302 | fn parse_serry_attr(attr: &Attribute, fields: SerryAttrFields) -> Result<SerryAttr<'_>, Error> {
[INFO] [stdout]     |                                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:410:12
[INFO] [stdout]     |
[INFO] [stdout] 410 |     attrs: &Vec<Attribute>,
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 411 |     fields: SerryAttrFields,
[INFO] [stdout] 412 | ) -> Result<SerryAttr, Error> {
[INFO] [stdout]     |             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 412 | ) -> Result<SerryAttr<'_>, Error> {
[INFO] [stdout]     |                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serry-derive` (lib) due to 4 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1d2432ef8479f8ba26345a34398674855a833c5a374fbc8956d7e237e305b849", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d2432ef8479f8ba26345a34398674855a833c5a374fbc8956d7e237e305b849", kill_on_drop: false }`
[INFO] [stdout] 1d2432ef8479f8ba26345a34398674855a833c5a374fbc8956d7e237e305b849
