[INFO] fetching crate redbook 0.4.0...
[INFO] checking redbook-0.4.0 against 8773d2c75a8e90130dcce745a7ec4e66bb9963db+rustflags=-Aunfulfilled-lint-expectations for pr-163637
[INFO] extracting crate redbook 0.4.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate redbook 0.4.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate redbook 0.4.0
[INFO] tweaked toml for crates.io crate redbook 0.4.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate redbook 0.4.0 on toolchain 8773d2c75a8e90130dcce745a7ec4e66bb9963db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8773d2c75a8e90130dcce745a7ec4e66bb9963db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate redbook 0.4.0 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" "+8773d2c75a8e90130dcce745a7ec4e66bb9963db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] b255a2d510dc972036346d08cea966275afcaba7baa2c7fd11ee641e60cf59ac
[INFO] running `Command { std: "docker" "start" "b255a2d510dc972036346d08cea966275afcaba7baa2c7fd11ee641e60cf59ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b255a2d510dc972036346d08cea966275afcaba7baa2c7fd11ee641e60cf59ac", 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" "b255a2d510dc972036346d08cea966275afcaba7baa2c7fd11ee641e60cf59ac" "/opt/rustwide/cargo-home/bin/cargo" "+8773d2c75a8e90130dcce745a7ec4e66bb9963db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b255a2d510dc972036346d08cea966275afcaba7baa2c7fd11ee641e60cf59ac", 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 -Aunfulfilled-lint-expectations" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b255a2d510dc972036346d08cea966275afcaba7baa2c7fd11ee641e60cf59ac" "/opt/rustwide/cargo-home/bin/cargo" "+8773d2c75a8e90130dcce745a7ec4e66bb9963db" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] error[E0277]: the trait bound `proc_macro2_diagnostic::DiagnosticResult<&DataEnum>: ops::try_trait_old::Try` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:23:36
[INFO] [stdout]    |
[INFO] [stdout] 23 |            let enum_data: &DataEnum = match &ast.data {
[INFO] [stdout]    |   ____________________________________^
[INFO] [stdout]    |  |____________________________________|
[INFO] [stdout] 24 | ||             Data::Enum(enum_data) => Ok(enum_data),
[INFO] [stdout] 25 | ||             Data::Struct(struct_data) => error("Try can only be derived for an enum")
[INFO] [stdout] 26 | ||                 .add_help(struct_data.struct_token.span(), "not an enum"),
[INFO] [stdout] 27 | ||             Data::Union(union_data) => error("Try can only be derived for an enum")
[INFO] [stdout] 28 | ||                 .add_help(union_data.union_token.span(), "not an enum"),
[INFO] [stdout] 29 | ||         }?;
[INFO] [stdout]    | ||_________^- required by a bound introduced by this call
[INFO] [stdout]    | |__________|
[INFO] [stdout]    |            the trait `ops::try_trait_old::Try` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<&DataEnum>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `proc_macro2_diagnostic::DiagnosticResult<&DataEnum>` implements similarly named trait `std::ops::Try`, but not `ops::try_trait_old::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `proc_macro2_diagnostic::DiagnosticResult<&DataEnum>: ops::try_trait_old::FromResidual<_>` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:23:36
[INFO] [stdout]    |
[INFO] [stdout] 23 |            let enum_data: &DataEnum = match &ast.data {
[INFO] [stdout]    |   ____________________________________^
[INFO] [stdout]    |  |____________________________________|
[INFO] [stdout] 24 | ||             Data::Enum(enum_data) => Ok(enum_data),
[INFO] [stdout] 25 | ||             Data::Struct(struct_data) => error("Try can only be derived for an enum")
[INFO] [stdout] 26 | ||                 .add_help(struct_data.struct_token.span(), "not an enum"),
[INFO] [stdout] 27 | ||             Data::Union(union_data) => error("Try can only be derived for an enum")
[INFO] [stdout] 28 | ||                 .add_help(union_data.union_token.span(), "not an enum"),
[INFO] [stdout] 29 | ||         }?;
[INFO] [stdout]    | ||_________^- required by a bound introduced by this call
[INFO] [stdout]    | |__________|
[INFO] [stdout]    |            the trait `ops::try_trait_old::FromResidual<_>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<&DataEnum>`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `ops::try_trait_old::Try::branch`
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:54:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a method that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub(crate) fn parse(ast: &'ast DeriveInput) -> DiagnosticResult<Self> {
[INFO] [stdout]    |     --------------------------------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 29 |         }?;
[INFO] [stdout]    |          ^ cannot use the `?` operator in a method that returns `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::FromResidual<_>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `proc_macro2_diagnostic::DiagnosticResult<&Variant>: ops::try_trait_old::Try` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:33:30
[INFO] [stdout]    |
[INFO] [stdout] 33 |            let output_variant = enum_data
[INFO] [stdout]    |   ______________________________^
[INFO] [stdout]    |  |______________________________|
[INFO] [stdout] 34 | ||             .variants
[INFO] [stdout] 35 | ||             .first()
[INFO] [stdout] 36 | ||             .or_error("Try cannot be derived for a zero-field enum")
[INFO] [stdout] ...  ||
[INFO] [stdout] 39 | ||                 "add at least two variants here...",
[INFO] [stdout] 40 | ||             )?;
[INFO] [stdout]    | ||_____________^- required by a bound introduced by this call
[INFO] [stdout]    | |______________|
[INFO] [stdout]    |                the trait `ops::try_trait_old::Try` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<&Variant>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `proc_macro2_diagnostic::DiagnosticResult<&Variant>` implements similarly named trait `std::ops::Try`, but not `ops::try_trait_old::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `proc_macro2_diagnostic::DiagnosticResult<&Variant>: ops::try_trait_old::FromResidual<_>` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:33:30
[INFO] [stdout]    |
[INFO] [stdout] 33 |            let output_variant = enum_data
[INFO] [stdout]    |   ______________________________^
[INFO] [stdout]    |  |______________________________|
[INFO] [stdout] 34 | ||             .variants
[INFO] [stdout] 35 | ||             .first()
[INFO] [stdout] 36 | ||             .or_error("Try cannot be derived for a zero-field enum")
[INFO] [stdout] ...  ||
[INFO] [stdout] 39 | ||                 "add at least two variants here...",
[INFO] [stdout] 40 | ||             )?;
[INFO] [stdout]    | ||_____________^- required by a bound introduced by this call
[INFO] [stdout]    | |______________|
[INFO] [stdout]    |                the trait `ops::try_trait_old::FromResidual<_>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<&Variant>`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `ops::try_trait_old::Try::branch`
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:54:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a method that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:40:14
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub(crate) fn parse(ast: &'ast DeriveInput) -> DiagnosticResult<Self> {
[INFO] [stdout]    |     --------------------------------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 40 |             )?;
[INFO] [stdout]    |              ^ cannot use the `?` operator in a method that returns `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::FromResidual<_>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `proc_macro2_diagnostic::DiagnosticResult<&proc_macro2::Ident>: ops::try_trait_old::Try` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:43:42
[INFO] [stdout]    |
[INFO] [stdout] 43 |            let first_generic_type: &Ident = ast
[INFO] [stdout]    |   __________________________________________^
[INFO] [stdout]    |  |__________________________________________|
[INFO] [stdout] 44 | ||             .generics
[INFO] [stdout] 45 | ||             .type_params()
[INFO] [stdout] 46 | ||             .map(|ty| &ty.ident)
[INFO] [stdout] 47 | ||             .next()
[INFO] [stdout] 48 | ||             .or_error("Try requires a generic type for `Output`")
[INFO] [stdout] 49 | ||             .add_help(name.span(), "Add <T> after this...")?;
[INFO] [stdout]    | ||___________________________________________________________^- required by a bound introduced by this call
[INFO] [stdout]    | |____________________________________________________________|
[INFO] [stdout]    |                                                              the trait `ops::try_trait_old::Try` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<&proc_macro2::Ident>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `proc_macro2_diagnostic::DiagnosticResult<&proc_macro2::Ident>` implements similarly named trait `std::ops::Try`, but not `ops::try_trait_old::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `DiagnosticResult<&Ident>: FromResidual<_>` is not satisfied
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:43:42
[INFO] [stdout]    |
[INFO] [stdout] 43 |            let first_generic_type: &Ident = ast
[INFO] [stdout]    |   __________________________________________^
[INFO] [stdout]    |  |__________________________________________|
[INFO] [stdout] 44 | ||             .generics
[INFO] [stdout] 45 | ||             .type_params()
[INFO] [stdout] 46 | ||             .map(|ty| &ty.ident)
[INFO] [stdout] 47 | ||             .next()
[INFO] [stdout] 48 | ||             .or_error("Try requires a generic type for `Output`")
[INFO] [stdout] 49 | ||             .add_help(name.span(), "Add <T> after this...")?;
[INFO] [stdout]    | ||___________________________________________________________^- required by a bound introduced by this call
[INFO] [stdout]    | |____________________________________________________________|
[INFO] [stdout]    |                                                              the trait `ops::try_trait_old::FromResidual<_>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<&proc_macro2::Ident>`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `ops::try_trait_old::Try::branch`
[INFO] [stdout]   --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:54:4
[INFO] [stdout]    = note: the full name for the type has been written to '/opt/rustwide/target/debug/build/try_v2_derive/fbec910acf8ced96/out/try_v2_derive-fbec910acf8ced96.long-type-1782608877506424180.txt'
[INFO] [stdout]    = note: consider using `--verbose` to print the full type name to the console
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a method that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:49:60
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub(crate) fn parse(ast: &'ast DeriveInput) -> DiagnosticResult<Self> {
[INFO] [stdout]    |     --------------------------------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 49 |             .add_help(name.span(), "Add <T> after this...")?;
[INFO] [stdout]    |                                                            ^ cannot use the `?` operator in a method that returns `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::FromResidual<_>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a method that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:95:82
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub(crate) fn parse(ast: &'ast DeriveInput) -> DiagnosticResult<Self> {
[INFO] [stdout]    |     --------------------------------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 95 |         let output_type = OutputType::try_from((output_type, first_generic_type))?;
[INFO] [stdout]    |                                                                                  ^ cannot use the `?` operator in a method that returns `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::FromResidual<Result<!, proc_macro2_diagnostic::Diagnostic>>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>`
[INFO] [stdout]    = note: `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>` implements similarly named trait `FromResidual`, but not `ops::try_trait_old::FromResidual<Result<!, proc_macro2_diagnostic::Diagnostic>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `ops::try_trait_old::Try`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:23:36
[INFO] [stdout]    |
[INFO] [stdout] 23 |           let enum_data: &DataEnum = match &ast.data {
[INFO] [stdout]    |  ____________________________________^
[INFO] [stdout] 24 | |             Data::Enum(enum_data) => Ok(enum_data),
[INFO] [stdout] 25 | |             Data::Struct(struct_data) => error("Try can only be derived for an enum")
[INFO] [stdout] 26 | |                 .add_help(struct_data.struct_token.span(), "not an enum"),
[INFO] [stdout] 27 | |             Data::Union(union_data) => error("Try can only be derived for an enum")
[INFO] [stdout] 28 | |                 .add_help(union_data.union_token.span(), "not an enum"),
[INFO] [stdout] 29 | |         }?;
[INFO] [stdout]    | |__________^ the `?` operator cannot be applied to type `proc_macro2_diagnostic::DiagnosticResult<&DataEnum>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::Try` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<&DataEnum>`
[INFO] [stdout]    = note: `proc_macro2_diagnostic::DiagnosticResult<&DataEnum>` implements similarly named trait `std::ops::Try`, but not `ops::try_trait_old::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `ops::try_trait_old::Try`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:33:30
[INFO] [stdout]    |
[INFO] [stdout] 33 |           let output_variant = enum_data
[INFO] [stdout]    |  ______________________________^
[INFO] [stdout] 34 | |             .variants
[INFO] [stdout] 35 | |             .first()
[INFO] [stdout] 36 | |             .or_error("Try cannot be derived for a zero-field enum")
[INFO] [stdout] ...  |
[INFO] [stdout] 39 | |                 "add at least two variants here...",
[INFO] [stdout] 40 | |             )?;
[INFO] [stdout]    | |______________^ the `?` operator cannot be applied to type `proc_macro2_diagnostic::DiagnosticResult<&Variant>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::Try` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<&Variant>`
[INFO] [stdout]    = note: `proc_macro2_diagnostic::DiagnosticResult<&Variant>` implements similarly named trait `std::ops::Try`, but not `ops::try_trait_old::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `ops::try_trait_old::Try`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/parse.rs:43:42
[INFO] [stdout]    |
[INFO] [stdout] 43 |           let first_generic_type: &Ident = ast
[INFO] [stdout]    |  __________________________________________^
[INFO] [stdout] 44 | |             .generics
[INFO] [stdout] 45 | |             .type_params()
[INFO] [stdout] 46 | |             .map(|ty| &ty.ident)
[INFO] [stdout] 47 | |             .next()
[INFO] [stdout] 48 | |             .or_error("Try requires a generic type for `Output`")
[INFO] [stdout] 49 | |             .add_help(name.span(), "Add <T> after this...")?;
[INFO] [stdout]    | |____________________________________________________________^ the `?` operator cannot be applied to type `proc_macro2_diagnostic::DiagnosticResult<&proc_macro2::Ident>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `ops::try_trait_old::Try` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<&proc_macro2::Ident>`
[INFO] [stdout]    = note: `proc_macro2_diagnostic::DiagnosticResult<&proc_macro2::Ident>` implements similarly named trait `std::ops::Try`, but not `ops::try_trait_old::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>: ops::try_trait_old::Try` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:194:19
[INFO] [stdout]     |
[INFO] [stdout] 194 |     let tryenum = TryEnum::parse(&ast)?;
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^-
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the trait `ops::try_trait_old::Try` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>`
[INFO] [stdout]     |                   required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>` implements similarly named trait `std::ops::Try`, but not `ops::try_trait_old::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>: ops::try_trait_old::FromResidual<_>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:194:19
[INFO] [stdout]     |
[INFO] [stdout] 194 |     let tryenum = TryEnum::parse(&ast)?;
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^-
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   the trait `ops::try_trait_old::FromResidual<_>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>`
[INFO] [stdout]     |                   required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout] note: required by a bound in `ops::try_trait_old::Try::branch`
[INFO] [stdout]    --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:54:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:194:39
[INFO] [stdout]     |
[INFO] [stdout] 191 | fn derive_try_trait_v2(input: TokenStream2) -> DiagnosticStream {
[INFO] [stdout]     | --------------------------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 194 |     let tryenum = TryEnum::parse(&ast)?;
[INFO] [stdout]     |                                       ^ cannot use the `?` operator in a function that returns `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `ops::try_trait_old::FromResidual<_>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `split_for_impl` found for type `!` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:204:17
[INFO] [stdout]     |
[INFO] [stdout] 204 |     ) = tryenum.split_for_impl();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ method not found in `!`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `proc_macro2_diagnostic::DiagnosticResult<()>: ops::try_trait_old::Try` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:211:9
[INFO] [stdout]     |
[INFO] [stdout] 211 | //         warn_spanned(
[INFO] [stdout] 212 | ||             (),
[INFO] [stdout] 213 | ||             ast.span(),
[INFO] [stdout] 214 | ||             "it is recommended to annotate try-types as `#[must_use]`",
[INFO] [stdout] 215 | ||         )?
[INFO] [stdout]     | ||_________^- required by a bound introduced by this call
[INFO] [stdout]     | |__________|
[INFO] [stdout]     |            the trait `ops::try_trait_old::Try` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<()>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `proc_macro2_diagnostic::DiagnosticResult<()>` implements similarly named trait `std::ops::Try`, but not `ops::try_trait_old::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `proc_macro2_diagnostic::DiagnosticResult<()>: ops::try_trait_old::FromResidual<_>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:211:9
[INFO] [stdout]     |
[INFO] [stdout] 211 | //         warn_spanned(
[INFO] [stdout] 212 | ||             (),
[INFO] [stdout] 213 | ||             ast.span(),
[INFO] [stdout] 214 | ||             "it is recommended to annotate try-types as `#[must_use]`",
[INFO] [stdout] 215 | ||         )?
[INFO] [stdout]     | ||_________^- required by a bound introduced by this call
[INFO] [stdout]     | |__________|
[INFO] [stdout]     |            the trait `ops::try_trait_old::FromResidual<_>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<()>`
[INFO] [stdout]     |
[INFO] [stdout] note: required by a bound in `ops::try_trait_old::Try::branch`
[INFO] [stdout]    --> /rustc/8773d2c75a8e90130dcce745a7ec4e66bb9963db/library/core/src/ops/try_trait_old.rs:54:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:215:10
[INFO] [stdout]     |
[INFO] [stdout] 191 | fn derive_try_trait_v2(input: TokenStream2) -> DiagnosticStream {
[INFO] [stdout]     | --------------------------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 215 |         )?
[INFO] [stdout]     |          ^ cannot use the `?` operator in a function that returns `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `ops::try_trait_old::FromResidual<_>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `generate_arms` found for type `!` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:218:48
[INFO] [stdout]     |
[INFO] [stdout] 218 |     let (branch_arms, residual_arms) = tryenum.generate_arms();
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^ method not found in `!`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:259:78
[INFO] [stdout]     |
[INFO] [stdout] 191 | fn derive_try_trait_v2(input: TokenStream2) -> DiagnosticStream {
[INFO] [stdout]     | --------------------------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 259 |             .parse_args_with(Punctuated::<Path, Token![,]>::parse_terminated)?
[INFO] [stdout]     |                                                                              ^ cannot use the `?` operator in a function that returns `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `ops::try_trait_old::FromResidual<Result<!, syn::Error>>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>`
[INFO] [stdout]     = note: `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>` implements similarly named trait `FromResidual`, but not `ops::try_trait_old::FromResidual<Result<!, syn::Error>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:420:76
[INFO] [stdout]     |
[INFO] [stdout] 191 | fn derive_try_trait_v2(input: TokenStream2) -> DiagnosticStream {
[INFO] [stdout]     | --------------------------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 420 |                     attribute.parse_args_with(Punctuated::parse_terminated)?;
[INFO] [stdout]     |                                                                            ^ cannot use the `?` operator in a function that returns `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `ops::try_trait_old::FromResidual<Result<!, syn::Error>>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>`
[INFO] [stdout]     = note: `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>` implements similarly named trait `FromResidual`, but not `ops::try_trait_old::FromResidual<Result<!, syn::Error>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `ops::try_trait_old::Try`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:194:19
[INFO] [stdout]     |
[INFO] [stdout] 194 |     let tryenum = TryEnum::parse(&ast)?;
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^ the `?` operator cannot be applied to type `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `ops::try_trait_old::Try` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>`
[INFO] [stdout]     = note: `proc_macro2_diagnostic::DiagnosticResult<TryEnum<'_>>` implements similarly named trait `std::ops::Try`, but not `ops::try_trait_old::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `ops::try_trait_old::Try`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:211:9
[INFO] [stdout]     |
[INFO] [stdout] 211 | /         warn_spanned(
[INFO] [stdout] 212 | |             (),
[INFO] [stdout] 213 | |             ast.span(),
[INFO] [stdout] 214 | |             "it is recommended to annotate try-types as `#[must_use]`",
[INFO] [stdout] 215 | |         )?
[INFO] [stdout]     | |__________^ the `?` operator cannot be applied to type `proc_macro2_diagnostic::DiagnosticResult<()>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `ops::try_trait_old::Try` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<()>`
[INFO] [stdout]     = note: `proc_macro2_diagnostic::DiagnosticResult<()>` implements similarly named trait `std::ops::Try`, but not `ops::try_trait_old::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `ops::try_trait_old::FromResidual`)
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/try_v2_derive-0.11.0/src/lib.rs:507:64
[INFO] [stdout]     |
[INFO] [stdout] 493 | fn derive_from_residual(input: TokenStream2) -> DiagnosticStream {
[INFO] [stdout]     | ---------------------------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 507 |         attribute.parse_args_with(Punctuated::parse_terminated)?;
[INFO] [stdout]     |                                                                ^ cannot use the `?` operator in a function that returns `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `ops::try_trait_old::FromResidual<Result<!, syn::Error>>` is not implemented for `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>`
[INFO] [stdout]     = note: `proc_macro2_diagnostic::DiagnosticResult<proc_macro2::TokenStream>` implements similarly named trait `FromResidual`, but not `ops::try_trait_old::FromResidual<Result<!, syn::Error>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `try_v2_derive` (lib) due to 26 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b255a2d510dc972036346d08cea966275afcaba7baa2c7fd11ee641e60cf59ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b255a2d510dc972036346d08cea966275afcaba7baa2c7fd11ee641e60cf59ac", kill_on_drop: false }`
[INFO] [stdout] b255a2d510dc972036346d08cea966275afcaba7baa2c7fd11ee641e60cf59ac
