[INFO] fetching crate try_v2 0.11.1...
[INFO] testing try_v2-0.11.1 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate try_v2 0.11.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate try_v2 0.11.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate try_v2 0.11.1
[INFO] tweaked toml for crates.io crate try_v2 0.11.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate try_v2 0.11.1 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate try_v2 0.11.1 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] 81fbd06579cc7b9d950e6dcf49bab6407c33a4bb96d315514fe18a08c8b9a1b5
[INFO] running `Command { std: "docker" "start" "81fbd06579cc7b9d950e6dcf49bab6407c33a4bb96d315514fe18a08c8b9a1b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81fbd06579cc7b9d950e6dcf49bab6407c33a4bb96d315514fe18a08c8b9a1b5", 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" "81fbd06579cc7b9d950e6dcf49bab6407c33a4bb96d315514fe18a08c8b9a1b5" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81fbd06579cc7b9d950e6dcf49bab6407c33a4bb96d315514fe18a08c8b9a1b5", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "81fbd06579cc7b9d950e6dcf49bab6407c33a4bb96d315514fe18a08c8b9a1b5" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling syn v3.0.9
[INFO] [stderr]    Compiling strum_macros v0.28.0
[INFO] [stderr]    Compiling strum v0.28.0
[INFO] [stderr]    Compiling build_safely v0.6.1
[INFO] [stderr]    Compiling try_v2_traits v0.11.1
[INFO] [stderr]    Compiling proc_macro2_diagnostic v0.8.1
[INFO] [stderr]    Compiling try_v2_derive v0.11.1
[INFO] [stderr]    Compiling try_v2 v0.11.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused dependency `try_v2_derive`
[INFO] [stderr]  --> Cargo.toml:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | [dependencies.try_v2_derive]
[INFO] [stderr]   |               ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `try_v2_derive`
[INFO] [stderr] warning: unused dependency `try_v2_traits`
[INFO] [stderr]  --> Cargo.toml:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | [dependencies.try_v2_traits]
[INFO] [stderr]   |               ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: consider removing the dependency on `try_v2_traits`
[INFO] [stderr] warning: `try_v2` (manifest) generated 2 warnings
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 6.62s
[INFO] running `Command { std: "docker" "inspect" "81fbd06579cc7b9d950e6dcf49bab6407c33a4bb96d315514fe18a08c8b9a1b5", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "81fbd06579cc7b9d950e6dcf49bab6407c33a4bb96d315514fe18a08c8b9a1b5" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling try_v2 v0.11.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]   --> examples/basic_expanded.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     type Output = T;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]   --> examples/basic_expanded.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     type Residual = Exit<!>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]   --> examples/basic_expanded.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn from_output(output: Self::Output) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]   --> examples/basic_expanded.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn branch(self) -> std::ops::ControlFlow<Self::Residual, Self::Output> {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]   --> examples/basic_expanded.rs:18:22
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T: Termination> std::ops::Try for Exit<T> {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]   --> examples/basic_expanded.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn from_residual(residual: Exit<!>) -> Self {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]   --> examples/basic_expanded.rs:37:22
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl<T: Termination> std::ops::FromResidual<Exit<!>> for Exit<T> {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2_residual`
[INFO] [stdout]   --> examples/basic_expanded.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 49 |     type TryType = Exit<T>;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #91285 <https://github.com/rust-lang/rust/issues/91285> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2_residual`
[INFO] [stdout]   --> examples/basic_expanded.rs:48:22
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl<T: Termination> std::ops::Residual<T> for Exit<!> {
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #91285 <https://github.com/rust-lang/rust/issues/91285> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/Transpose.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait_v2)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]   --> examples/basic_expanded.rs:23:28
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn from_output(output: Self::Output) -> Self {
[INFO] [stdout]    |                            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]   --> examples/basic_expanded.rs:28:46
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn branch(self) -> std::ops::ControlFlow<Self::Residual, Self::Output> {
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `try_trait_v2`
[INFO] [stdout]   --> examples/basic_expanded.rs:28:62
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn branch(self) -> std::ops::ControlFlow<Self::Residual, Self::Output> {
[INFO] [stdout]    |                                                              ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/Unwrap.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait_v2)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `try_v2` (example "Unwrap") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/chaining.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait_v2)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `try_v2` (example "Transpose") due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `try_v2` (example "basic_expanded") due to 12 previous errors
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/doubleQ.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(try_trait_v2)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/signatures.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait_v2)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `try_v2` (example "chaining") due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `try_v2` (example "signatures") due to 1 previous error
[INFO] [stdout] error[E0432]: unresolved import `try_v2::Try`
[INFO] [stdout]  --> examples/basic.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use try_v2::Try;
[INFO] [stdout]   |     ^^^^^^^^---
[INFO] [stdout]   |             |
[INFO] [stdout]   |             no `Try` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `try_v2_derive::Try`
[INFO] [stdout]  --> examples/Nested_Try.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use try_v2_derive::Try;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^---
[INFO] [stdout]   |                    |
[INFO] [stdout]   |                    no `Try` in the root
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this trait instead
[INFO] [stdout]   |
[INFO] [stdout] 8 - use try_v2_derive::Try;
[INFO] [stdout] 8 + use std::ops::Try;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/Nested_Try.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(try_trait_v2)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `Try`
[INFO] [stdout]   --> examples/Nested_Try.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let baz = foo? + 1;
[INFO] [stdout]    |                   ^^^^ the `?` operator cannot be applied to type `DuplicateData<i32>`
[INFO] [stdout]    |
[INFO] [stdout] help: the nightly-only, unstable trait `Try` is not implemented for `DuplicateData<i32>`
[INFO] [stdout]   --> examples/Nested_Try.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum DuplicateData<T> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[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 `FromResidual`)
[INFO] [stdout]   --> examples/Nested_Try.rs:24:22
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn process(foo: DuplicateData<i32>) -> DuplicateData<i32> {
[INFO] [stdout]    |     --------------------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 24 |         let baz = foo? + 1;
[INFO] [stdout]    |                      ^ cannot use the `?` operator in a function that returns `DuplicateData<i32>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432, E0554.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `try_v2` (example "doubleQ") due to 1 previous error
[INFO] [stderr] error: could not compile `try_v2` (example "basic") due to 1 previous error
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `try_v2` (example "Nested_Try") due to 4 previous errors
[INFO] [stdout] error[E0432]: unresolved import `try_v2_derive::Try`
[INFO] [stdout]  --> examples/TryFrom2.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use try_v2_derive::Try;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^---
[INFO] [stdout]   |                    |
[INFO] [stdout]   |                    no `Try` in the root
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this trait instead
[INFO] [stdout]   |
[INFO] [stdout] 6 - use try_v2_derive::Try;
[INFO] [stdout] 6 + use std::ops::Try;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `FromResidual` in this scope
[INFO] [stdout]   --> examples/TryFrom2.rs:20:3
[INFO] [stdout]    |
[INFO] [stdout] 20 | #[FromResidual(Result<_, Self::Residual>)]
[INFO] [stdout]    |   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/TryFrom2.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(try_trait_v2)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `try_v2_derive::Try`
[INFO] [stdout]  --> examples/nested_residual.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use try_v2_derive::Try;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^---
[INFO] [stdout]   |                    |
[INFO] [stdout]   |                    no `Try` in the root
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this trait instead
[INFO] [stdout]   |
[INFO] [stdout] 8 - use try_v2_derive::Try;
[INFO] [stdout] 8 + use std::ops::Try;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> examples/nested_residual.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(try_trait_v2)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Eightball<Even, Odd>: Try` is not satisfied
[INFO] [stdout]   --> examples/TryFrom2.rs:33:19
[INFO] [stdout]    |
[INFO] [stdout] 33 |     type Return = Eightball<Self, Odd>;
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]    |
[INFO] [stdout] help: the nightly-only, unstable trait `Try` is not implemented for `Eightball<Even, Odd>`
[INFO] [stdout]   --> examples/TryFrom2.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum Eightball<Y, N> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `Try`
[INFO] [stdout]   --> examples/nested_residual.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     wibble()??
[INFO] [stdout]    |     ^^^^^^^^^ the `?` operator cannot be applied to type `Known<Good<!, i32>>`
[INFO] [stdout]    |
[INFO] [stdout] help: the nightly-only, unstable trait `Try` is not implemented for `Known<Good<!, i32>>`
[INFO] [stdout]   --> examples/nested_residual.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Known<T> {
[INFO] [stdout]    | ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `Try`
[INFO] [stdout]   --> examples/TryFrom2.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let n = <Even as TryFrom<i32>>::try_from(num)?;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `?` operator cannot be applied to type `Eightball<Even, Odd>`
[INFO] [stdout]    |
[INFO] [stdout] help: the nightly-only, unstable trait `Try` is not implemented for `Eightball<Even, Odd>`
[INFO] [stdout]   --> examples/TryFrom2.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | enum Eightball<Y, N> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^
[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 `FromResidual`)
[INFO] [stdout]   --> examples/TryFrom2.rs:77:50
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn even_string_own_try_type(num: i32) -> Eightball<String, Odd> {
[INFO] [stdout]    | --------------------------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 77 |     let n = <Even as TryFrom<i32>>::try_from(num)?;
[INFO] [stdout]    |                                                  ^ cannot use the `?` operator in a function that returns `Eightball<String, Odd>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[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 `FromResidual`)
[INFO] [stdout]   --> examples/TryFrom2.rs:85:51
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn even_string_via_result(num: i32) -> Eightball<String, Odd> {
[INFO] [stdout]    | ------------------------------------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 85 |     let n = <Even2 as TryFrom<i32>>::try_from(num)?;
[INFO] [stdout]    |                                                   ^ cannot use the `?` operator in a function that returns `Eightball<String, Odd>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `try_v2` (example "nested_residual") due to 3 previous errors
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `try_v2` (example "TryFrom2") due to 7 previous errors
[INFO] [stderr] warning: unused dependency `try_v2_derive`
[INFO] [stderr]  --> Cargo.toml:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | [dependencies.try_v2_derive]
[INFO] [stderr]   |               ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `try_v2_derive`
[INFO] [stderr] help: to still use for development builds, move to `dev-dependencies`
[INFO] [stderr] warning: unused dependency `try_v2_traits`
[INFO] [stderr]  --> Cargo.toml:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | [dependencies.try_v2_traits]
[INFO] [stderr]   |               ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] help: consider removing the dependency on `try_v2_traits`
[INFO] [stderr] warning: `try_v2` (manifest) generated 2 warnings
[INFO] running `Command { std: "docker" "inspect" "81fbd06579cc7b9d950e6dcf49bab6407c33a4bb96d315514fe18a08c8b9a1b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81fbd06579cc7b9d950e6dcf49bab6407c33a4bb96d315514fe18a08c8b9a1b5", kill_on_drop: false }`
[INFO] [stdout] 81fbd06579cc7b9d950e6dcf49bab6407c33a4bb96d315514fe18a08c8b9a1b5
