[INFO] cloning repository https://github.com/carrotflakes/fnum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carrotflakes/fnum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarrotflakes%2Ffnum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarrotflakes%2Ffnum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2a8e86b91911f5022a2d9154f19e7e25f89efe4d
[INFO] testing carrotflakes/fnum against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarrotflakes%2Ffnum" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/carrotflakes/fnum on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/carrotflakes/fnum
[INFO] finished tweaking git repo https://github.com/carrotflakes/fnum
[INFO] tweaked toml for git repo https://github.com/carrotflakes/fnum written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/carrotflakes/fnum 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fnum-derive v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf28f297fcc244490a37e7375ae9b5ad087d5ae699e9727bebd62be009836295
[INFO] running `Command { std: "docker" "start" "-a" "bf28f297fcc244490a37e7375ae9b5ad087d5ae699e9727bebd62be009836295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf28f297fcc244490a37e7375ae9b5ad087d5ae699e9727bebd62be009836295", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf28f297fcc244490a37e7375ae9b5ad087d5ae699e9727bebd62be009836295", kill_on_drop: false }`
[INFO] [stdout] bf28f297fcc244490a37e7375ae9b5ad087d5ae699e9727bebd62be009836295
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c6426a458865c6b5d659d73c50d0baf2c84eab515cc315b5053fdfa092bb86e
[INFO] running `Command { std: "docker" "start" "-a" "5c6426a458865c6b5d659d73c50d0baf2c84eab515cc315b5053fdfa092bb86e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling fnum-derive v0.0.1
[INFO] [stderr]    Compiling fnum v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.63s
[INFO] running `Command { std: "docker" "inspect" "5c6426a458865c6b5d659d73c50d0baf2c84eab515cc315b5053fdfa092bb86e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c6426a458865c6b5d659d73c50d0baf2c84eab515cc315b5053fdfa092bb86e", kill_on_drop: false }`
[INFO] [stdout] 5c6426a458865c6b5d659d73c50d0baf2c84eab515cc315b5053fdfa092bb86e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2d26de963cd5aab1a8b7d6b8db5cdb32323c9a1dcf867efd4b77914831e1391
[INFO] running `Command { std: "docker" "start" "-a" "a2d26de963cd5aab1a8b7d6b8db5cdb32323c9a1dcf867efd4b77914831e1391", kill_on_drop: false }`
[INFO] [stderr]    Compiling fnum v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the type `u64` does not permit being left uninitialized
[INFO] [stdout]   --> examples/impl.rs:27:26
[INFO] [stdout]    |
[INFO] [stdout] 27 |             0 => Enum::A(std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this code causes undefined behavior when executed
[INFO] [stdout]    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u32` does not permit being left uninitialized
[INFO] [stdout]   --> examples/impl.rs:28:26
[INFO] [stdout]    |
[INFO] [stdout] 28 |             1 => Enum::B(std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this code causes undefined behavior when executed
[INFO] [stdout]    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u32` does not permit being left uninitialized
[INFO] [stdout]   --> examples/impl.rs:29:26
[INFO] [stdout]    |
[INFO] [stdout] 29 |             2 => Enum::C(std::mem::MaybeUninit::uninit().assume_init(), std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this code causes undefined behavior when executed
[INFO] [stdout]    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u64` does not permit being left uninitialized
[INFO] [stdout]   --> examples/impl.rs:29:73
[INFO] [stdout]    |
[INFO] [stdout] 29 |             2 => Enum::C(std::mem::MaybeUninit::uninit().assume_init(), std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                         |
[INFO] [stdout]    |                                                                         this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                         help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u64` does not permit being left uninitialized
[INFO] [stdout]   --> examples/impl.rs:30:26
[INFO] [stdout]    |
[INFO] [stdout] 30 |             3 => Enum::D(std::mem::MaybeUninit::uninit().assume_init(), std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this code causes undefined behavior when executed
[INFO] [stdout]    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the type `u32` does not permit being left uninitialized
[INFO] [stdout]   --> examples/impl.rs:30:73
[INFO] [stdout]    |
[INFO] [stdout] 30 |             3 => Enum::D(std::mem::MaybeUninit::uninit().assume_init(), std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stdout]    |                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                                                         |
[INFO] [stdout]    |                                                                         this code causes undefined behavior when executed
[INFO] [stdout]    |                                                                         help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout]    |
[INFO] [stdout]    = note: integers must be initialized
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "a2d26de963cd5aab1a8b7d6b8db5cdb32323c9a1dcf867efd4b77914831e1391", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2d26de963cd5aab1a8b7d6b8db5cdb32323c9a1dcf867efd4b77914831e1391", kill_on_drop: false }`
[INFO] [stdout] a2d26de963cd5aab1a8b7d6b8db5cdb32323c9a1dcf867efd4b77914831e1391
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9c56479d373b0025a2b43926ac9248bc85bfdb2c9588676ba4dcbbcdedaa3185
[INFO] running `Command { std: "docker" "start" "-a" "9c56479d373b0025a2b43926ac9248bc85bfdb2c9588676ba4dcbbcdedaa3185", kill_on_drop: false }`
[INFO] [stderr] warning: the type `u64` does not permit being left uninitialized
[INFO] [stderr]   --> examples/impl.rs:27:26
[INFO] [stderr]    |
[INFO] [stderr] 27 |             0 => Enum::A(std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          this code causes undefined behavior when executed
[INFO] [stderr]    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: integers must be initialized
[INFO] [stderr]    = note: `#[warn(invalid_value)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the type `u32` does not permit being left uninitialized
[INFO] [stderr]   --> examples/impl.rs:28:26
[INFO] [stderr]    |
[INFO] [stderr] 28 |             1 => Enum::B(std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          this code causes undefined behavior when executed
[INFO] [stderr]    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: integers must be initialized
[INFO] [stderr] 
[INFO] [stderr] warning: the type `u32` does not permit being left uninitialized
[INFO] [stderr]   --> examples/impl.rs:29:26
[INFO] [stderr]    |
[INFO] [stderr] 29 |             2 => Enum::C(std::mem::MaybeUninit::uninit().assume_init(), std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          this code causes undefined behavior when executed
[INFO] [stderr]    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: integers must be initialized
[INFO] [stderr] 
[INFO] [stderr] warning: the type `u64` does not permit being left uninitialized
[INFO] [stderr]   --> examples/impl.rs:29:73
[INFO] [stderr]    |
[INFO] [stderr] 29 |             2 => Enum::C(std::mem::MaybeUninit::uninit().assume_init(), std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stderr]    |                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                                         |
[INFO] [stderr]    |                                                                         this code causes undefined behavior when executed
[INFO] [stderr]    |                                                                         help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: integers must be initialized
[INFO] [stderr] 
[INFO] [stderr] warning: the type `u64` does not permit being left uninitialized
[INFO] [stderr]   --> examples/impl.rs:30:26
[INFO] [stderr]    |
[INFO] [stderr] 30 |             3 => Enum::D(std::mem::MaybeUninit::uninit().assume_init(), std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          this code causes undefined behavior when executed
[INFO] [stderr]    |                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: integers must be initialized
[INFO] [stderr] 
[INFO] [stderr] warning: the type `u32` does not permit being left uninitialized
[INFO] [stderr]   --> examples/impl.rs:30:73
[INFO] [stderr]    |
[INFO] [stderr] 30 |             3 => Enum::D(std::mem::MaybeUninit::uninit().assume_init(), std::mem::MaybeUninit::uninit().assume_init()),
[INFO] [stderr]    |                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |                                                                         |
[INFO] [stderr]    |                                                                         this code causes undefined behavior when executed
[INFO] [stderr]    |                                                                         help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stderr]    |
[INFO] [stderr]    = note: integers must be initialized
[INFO] [stderr] 
[INFO] [stderr] warning: `fnum` (example "impl") generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fnum-7dafcd1216ca9467)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fnum
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - Fnum::variant_index (line 37) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Fnum::variant_index (line 37) stdout ----
[INFO] [stdout] error: cannot find derive macro `Fnum` in this scope
[INFO] [stdout]  --> src/lib.rs:38:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(Fnum)]
[INFO] [stdout]   |          ^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 2 + use fnum::Fnum;
[INFO] [stdout]   |
[INFO] [stdout] 2 + use fnum_derive::Fnum;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `First` found for enum `MyEnum` in the current scope
[INFO] [stdout]  --> src/lib.rs:44:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum MyEnum {
[INFO] [stdout]   | ----------- variant or associated item `First` not found for this enum
[INFO] [stdout] ...
[INFO] [stdout] 9 | assert_eq!(MyEnum::First.variant_index(), 0);
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout]   |                    |
[INFO] [stdout]   |                    variant or associated item not found in `MyEnum`
[INFO] [stdout]   |                    help: there is a variant with a similar name (notice the capitalization): `FIrst`
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `variant_index` found for enum `MyEnum` in the current scope
[INFO] [stdout]   --> src/lib.rs:45:27
[INFO] [stdout]    |
[INFO] [stdout] 4  | enum MyEnum {
[INFO] [stdout]    | ----------- method `variant_index` not found for this enum
[INFO] [stdout] ...
[INFO] [stdout] 10 | assert_eq!(MyEnum::Second.variant_index(), 1);
[INFO] [stdout]    |                           ^^^^^^^^^^^^^ method not found in `MyEnum`
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is implemented and in scope
[INFO] [stdout]    = note: the following trait defines an item `variant_index`, perhaps you need to implement it:
[INFO] [stdout]            candidate #1: `fnum::Fnum`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Fnum::variant_index (line 37)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "9c56479d373b0025a2b43926ac9248bc85bfdb2c9588676ba4dcbbcdedaa3185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c56479d373b0025a2b43926ac9248bc85bfdb2c9588676ba4dcbbcdedaa3185", kill_on_drop: false }`
[INFO] [stdout] 9c56479d373b0025a2b43926ac9248bc85bfdb2c9588676ba4dcbbcdedaa3185
