[INFO] fetching crate enumx_derive 0.4.2...
[INFO] testing enumx_derive-0.4.2 against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] extracting crate enumx_derive 0.4.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate enumx_derive 0.4.2
[INFO] finished tweaking crates.io crate enumx_derive 0.4.2
[INFO] tweaked toml for crates.io crate enumx_derive 0.4.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate enumx_derive 0.4.2 on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.12.1)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.114)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "inspect" "d50f3dd445bd7bfcbce14f7702a1624b3c3388ded4ef2771bcdcf16d453b0454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d50f3dd445bd7bfcbce14f7702a1624b3c3388ded4ef2771bcdcf16d453b0454", kill_on_drop: false }`
[INFO] [stdout] d50f3dd445bd7bfcbce14f7702a1624b3c3388ded4ef2771bcdcf16d453b0454
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec95bfd706c8c074f48ca8298afdd28bd7fa07913e00b71567c14efa95e31cf7
[INFO] running `Command { std: "docker" "start" "-a" "ec95bfd706c8c074f48ca8298afdd28bd7fa07913e00b71567c14efa95e31cf7", kill_on_drop: false }`
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling enumx_derive v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.11s
[INFO] running `Command { std: "docker" "inspect" "ec95bfd706c8c074f48ca8298afdd28bd7fa07913e00b71567c14efa95e31cf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec95bfd706c8c074f48ca8298afdd28bd7fa07913e00b71567c14efa95e31cf7", kill_on_drop: false }`
[INFO] [stdout] ec95bfd706c8c074f48ca8298afdd28bd7fa07913e00b71567c14efa95e31cf7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7eab2490080031831cd62352dcd85ac91b128f9cc896394712d76bc70e038370
[INFO] running `Command { std: "docker" "start" "-a" "7eab2490080031831cd62352dcd85ac91b128f9cc896394712d76bc70e038370", kill_on_drop: false }`
[INFO] [stderr]    Compiling enumx_derive v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `Command { std: "docker" "inspect" "7eab2490080031831cd62352dcd85ac91b128f9cc896394712d76bc70e038370", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7eab2490080031831cd62352dcd85ac91b128f9cc896394712d76bc70e038370", kill_on_drop: false }`
[INFO] [stdout] 7eab2490080031831cd62352dcd85ac91b128f9cc896394712d76bc70e038370
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 71e4e57fd104796c403fcdb3949f11ca7de85dadf65a8c3f2c1e2618dd5d5354
[INFO] running `Command { std: "docker" "start" "-a" "71e4e57fd104796c403fcdb3949f11ca7de85dadf65a8c3f2c1e2618dd5d5354", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/enumx_derive-52c19a774d536725)
[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 enumx_derive
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - Enum (line 94) ... FAILED
[INFO] [stdout] test src/lib.rs - def_impls (line 310) - compile ... FAILED
[INFO] [stdout] test src/lib.rs - derive_exchange (line 546) - compile ... FAILED
[INFO] [stdout] test src/lib.rs - Enum (line 107) ... ok
[INFO] [stdout] test src/lib.rs - sum (line 1456) - compile ... FAILED
[INFO] [stdout] test src/lib.rs - sum_err (line 1574) ... FAILED
[INFO] [stdout] test src/lib.rs - sum_err (line 1586) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Enum (line 94) stdout ----
[INFO] [stdout] error[E0425]: cannot find type `Type0` in this scope
[INFO] [stdout]   --> src/lib.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |     _0( Type0 ),
[INFO] [stdout]    |         ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Type1` in this scope
[INFO] [stdout]   --> src/lib.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 |     _1( Type1 ),
[INFO] [stdout]    |         ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `TypeM` in this scope
[INFO] [stdout]   --> src/lib.rs:99:9
[INFO] [stdout]    |
[INFO] [stdout] 99 |     _M( TypeM ),
[INFO] [stdout]    |         ^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - def_impls (line 310) stdout ----
[INFO] [stdout] error: cannot find macro `def_impls` in this scope
[INFO] [stdout]    --> src/lib.rs:311:1
[INFO] [stdout]     |
[INFO] [stdout] 311 | def_impls! {
[INFO] [stdout]     | ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]     |
[INFO] [stdout] 310 + use enumx_derive::def_impls;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - derive_exchange (line 546) stdout ----
[INFO] [stdout] error: cannot find derive macro `Exchange` in this scope
[INFO] [stdout]    --> src/lib.rs:547:11
[INFO] [stdout]     |
[INFO] [stdout] 547 | #[derive( Exchange )]
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this derive macro
[INFO] [stdout]     |
[INFO] [stdout] 546 + use enumx_derive::Exchange;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - sum (line 1456) stdout ----
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]     --> src/lib.rs:1460:9
[INFO] [stdout]      |
[INFO] [stdout] 1460 |         #[variant] 1_i32
[INFO] [stdout]      |         ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout]      = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-01-05; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]     --> src/lib.rs:1462:9
[INFO] [stdout]      |
[INFO] [stdout] 1462 |         #[variant] "false"
[INFO] [stdout]      |         ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout]      = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-01-05; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `sum` in this scope
[INFO] [stdout]     --> src/lib.rs:1457:3
[INFO] [stdout]      |
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] 1457 | #[sum]
[INFO] [stdout]      |   ^^^
[INFO] [stdout]      |
[INFO] [stdout] help: consider importing this attribute macro
[INFO] [stdout]      |
[INFO] [stdout] 1456 + use enumx_derive::sum;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `variant` in this scope
[INFO] [stdout]     --> src/lib.rs:1460:11
[INFO] [stdout]      |
[INFO] [stdout] 1460 |         #[variant] 1_i32
[INFO] [stdout]      |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `variant` in this scope
[INFO] [stdout]     --> src/lib.rs:1462:11
[INFO] [stdout]      |
[INFO] [stdout] 1462 |         #[variant] "false"
[INFO] [stdout]      |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `if` and `else` have incompatible types
[INFO] [stdout]     --> src/lib.rs:1462:20
[INFO] [stdout]      |
[INFO] [stdout] 1459 | /     if cond {
[INFO] [stdout] 1460 | |         #[variant] 1_i32
[INFO] [stdout]      | |                    ----- expected because of this
[INFO] [stdout] 1461 | |     } else {
[INFO] [stdout] 1462 | |         #[variant] "false"
[INFO] [stdout]      | |                    ^^^^^^^ expected `i32`, found `&str`
[INFO] [stdout] 1463 | |     }
[INFO] [stdout]      | |_____- `if` and `else` have incompatible types
[INFO] [stdout]      |
[INFO] [stdout] help: you could change the return type to be a boxed trait object
[INFO] [stdout]      |
[INFO] [stdout] 1458 - fn f( cond: bool ) -> impl Clone {
[INFO] [stdout] 1458 + fn f( cond: bool ) -> Box<dyn Clone> {
[INFO] [stdout]      |
[INFO] [stdout] help: if you change the return type to expect trait objects, box the returned expressions
[INFO] [stdout]      |
[INFO] [stdout] 1460 ~         #[variant] Box::new(1_i32)
[INFO] [stdout] 1461 |     } else {
[INFO] [stdout] 1462 ~         #[variant] Box::new("false")
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0658.
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - sum_err (line 1574) stdout ----
[INFO] [stdout] error[E0658]: attributes on expressions are experimental
[INFO] [stdout]     --> src/lib.rs:1577:33
[INFO] [stdout]      |
[INFO] [stdout] 1577 |     Err( error ) => return Err( #[variant] error ),
[INFO] [stdout]      |                                 ^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
[INFO] [stdout]      = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable
[INFO] [stdout]      = note: this compiler was built on 2026-01-05; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `variant` in this scope
[INFO] [stdout]     --> src/lib.rs:1577:35
[INFO] [stdout]      |
[INFO] [stdout] 1577 |     Err( error ) => return Err( #[variant] error ),
[INFO] [stdout]      |                                   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `expr` in this scope
[INFO] [stdout]     --> src/lib.rs:1575:7
[INFO] [stdout]      |
[INFO] [stdout] 1575 | match expr {
[INFO] [stdout]      |       ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]     --> src/lib.rs:1577:28
[INFO] [stdout]      |
[INFO] [stdout] 1574 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_1574_0() {
[INFO] [stdout]      |                                                                          - help: a return type might be missing here: `-> _`
[INFO] [stdout] ...
[INFO] [stdout] 1577 |     Err( error ) => return Err( #[variant] error ),
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^^^^^^^^^^ expected `()`, found `Result<_, _>`
[INFO] [stdout]      |
[INFO] [stdout]      = note: expected unit type `()`
[INFO] [stdout]                      found enum `Result<_, _>`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0425, E0658.
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - sum_err (line 1586) stdout ----
[INFO] [stdout] error: cannot find attribute `sum_err` in this scope
[INFO] [stdout]     --> src/lib.rs:1587:3
[INFO] [stdout]      |
[INFO] [stdout] 1587 | #[sum_err]
[INFO] [stdout]      |   ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] help: consider importing this attribute macro
[INFO] [stdout]      |
[INFO] [stdout] 1586 + use enumx_derive::sum_err;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `sum` in this scope
[INFO] [stdout]     --> src/lib.rs:1588:3
[INFO] [stdout]      |
[INFO] [stdout] 1588 | #[sum( impl Clone )]
[INFO] [stdout]      |   ^^^
[INFO] [stdout]      |
[INFO] [stdout] help: consider importing this attribute macro
[INFO] [stdout]      |
[INFO] [stdout] 1586 + use enumx_derive::sum;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> src/lib.rs:1591:14
[INFO] [stdout]      |
[INFO] [stdout] 1591 |         0 => Ok(()),
[INFO] [stdout]      |              ^^ cannot infer type of the type parameter `E` declared on the enum `Result`
[INFO] [stdout]      |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]      |
[INFO] [stdout] 1591 |         0 => Ok::<(), E>(()),
[INFO] [stdout]      |                +++++++++
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]     --> src/lib.rs:1591:14
[INFO] [stdout]      |
[INFO] [stdout] 1591 |         0 => Ok(()),
[INFO] [stdout]      |              ^^ cannot infer type of the type parameter `E` declared on the enum `Result`
[INFO] [stdout] 1592 |         1 => Ok( Err( 0 )? ),
[INFO] [stdout]      |                          - type must be known at this point
[INFO] [stdout]      |
[INFO] [stdout]      = note: multiple `impl`s satisfying `_: From<i32>` found in the following crates: `core`, `std`:
[INFO] [stdout]              - impl From<i32> for AtomicI32;
[INFO] [stdout]              - impl From<i32> for f128;
[INFO] [stdout]              - impl From<i32> for f64;
[INFO] [stdout]              - impl From<i32> for i128;
[INFO] [stdout]              - impl From<i32> for i64;
[INFO] [stdout]              - impl From<i32> for std::sys::process::unix::unix::ExitStatus;
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]      |
[INFO] [stdout] 1591 |         0 => Ok::<(), E>(()),
[INFO] [stdout]      |                +++++++++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0283.
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Enum (line 94)
[INFO] [stdout]     src/lib.rs - def_impls (line 310)
[INFO] [stdout]     src/lib.rs - derive_exchange (line 546)
[INFO] [stdout]     src/lib.rs - sum (line 1456)
[INFO] [stdout]     src/lib.rs - sum_err (line 1574)
[INFO] [stdout]     src/lib.rs - sum_err (line 1586)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 6 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.03s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "71e4e57fd104796c403fcdb3949f11ca7de85dadf65a8c3f2c1e2618dd5d5354", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71e4e57fd104796c403fcdb3949f11ca7de85dadf65a8c3f2c1e2618dd5d5354", kill_on_drop: false }`
[INFO] [stdout] 71e4e57fd104796c403fcdb3949f11ca7de85dadf65a8c3f2c1e2618dd5d5354
