[INFO] fetching crate merfolk 0.1.4...
[INFO] testing merfolk-0.1.4 against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] extracting crate merfolk 0.1.4 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate merfolk 0.1.4
[INFO] finished tweaking crates.io crate merfolk 0.1.4
[INFO] tweaked toml for crates.io crate merfolk 0.1.4 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate merfolk 0.1.4 on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "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" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 80 packages to latest compatible versions
[INFO] [stderr]       Adding derive_builder v0.10.2 (available: v0.20.2)
[INFO] [stderr]       Adding hyper v0.14.32 (available: v1.8.1)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding spin v0.7.1 (available: v0.10.0)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded darling_macro v0.12.4
[INFO] [stderr]   Downloaded derive_builder_macro v0.10.2
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[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling anyhow v1.0.100
[INFO] [stderr]    Compiling spin v0.7.1
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stderr]    Compiling darling_macro v0.12.4
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[INFO] [stderr]    Compiling derive_builder_macro v0.10.2
[INFO] [stderr]    Compiling derive_builder v0.10.2
[INFO] [stderr]    Compiling merfolk v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.13s
[INFO] running `Command { std: "docker" "inspect" "c9514a9d69af5c3e6fecda1194b30549450a1b99e3aacbfa76f01511370983d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9514a9d69af5c3e6fecda1194b30549450a1b99e3aacbfa76f01511370983d2", kill_on_drop: false }`
[INFO] [stdout] c9514a9d69af5c3e6fecda1194b30549450a1b99e3aacbfa76f01511370983d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afa3b1063335f2fca8d96f879a4cd1fe6b963455e98cf2bde87588b1d06f7ddb
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[INFO] [stderr]    Compiling merfolk v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 7.76s
[INFO] running `Command { std: "docker" "inspect" "afa3b1063335f2fca8d96f879a4cd1fe6b963455e98cf2bde87588b1d06f7ddb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afa3b1063335f2fca8d96f879a4cd1fe6b963455e98cf2bde87588b1d06f7ddb", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7bc0362425687a05929d75f8c2fa25f4aa163ddf7a2a903f0abbeb82ffc5d133
[INFO] running `Command { std: "docker" "start" "-a" "7bc0362425687a05929d75f8c2fa25f4aa163ddf7a2a903f0abbeb82ffc5d133", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/merfolk-0087640824c46fc1)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::init ... ok
[INFO] [stdout] test test::frontend ... ok
[INFO] [stdout] test test::backend ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests merfolk
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - (line 76) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 32) ... FAILED
[INFO] [stdout] test src/lib.rs - Mer<B,F>::backend (line 364) - compile ... FAILED
[INFO] [stdout] test src/lib.rs - Mer<B,F>::middlewares (line 388) - compile ... FAILED
[INFO] [stdout] test src/lib.rs - (line 103) - compile ... FAILED
[INFO] [stdout] test src/lib.rs - Mer<B,F>::frontend (line 340) - compile ... FAILED
[INFO] [stdout] test src/helpers/smart_lock.rs - helpers::smart_lock (line 7) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 76) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `merfolk_backend_http`
[INFO] [stdout]   --> src/lib.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | use merfolk_backend_http::Http;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_backend_http`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `merfolk_backend_http`, use `cargo add merfolk_backend_http` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `merfolk_frontend_register`
[INFO] [stdout]   --> src/lib.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 | use merfolk_frontend_register::Register;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_frontend_register`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `merfolk_frontend_register`, use `cargo add merfolk_frontend_register` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:98:49
[INFO] [stdout]    |
[INFO] [stdout] 98 | let result_add: Result<i32> = merfolk.frontend(|f| f.call("add", &(1, 2))).unwrap();
[INFO] [stdout]    |                                                 ^  - type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]    |
[INFO] [stdout] 98 | let result_add: Result<i32> = merfolk.frontend(|f: /* Type */| f.call("add", &(1, 2))).unwrap();
[INFO] [stdout]    |                                                  ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:99:54
[INFO] [stdout]    |
[INFO] [stdout] 99 | let result_subtract: Result<i32> = merfolk.frontend(|f| f.call("subtract", &(1, 2))).unwrap();
[INFO] [stdout]    |                                                      ^  - type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]    |
[INFO] [stdout] 99 | let result_subtract: Result<i32> = merfolk.frontend(|f: /* Type */| f.call("subtract", &(1, 2))).unwrap();
[INFO] [stdout]    |                                                       ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0432.
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 32) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `merfolk_backend_http`
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | use merfolk_backend_http::Http;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_backend_http`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `merfolk_backend_http`, use `cargo add merfolk_backend_http` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `merfolk_frontend_register`
[INFO] [stdout]   --> src/lib.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use merfolk_frontend_register::Register;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_frontend_register`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `merfolk_frontend_register`, use `cargo add merfolk_frontend_register` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Mer<B,F>::backend (line 364) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `merfolk_backend_http`
[INFO] [stdout]    --> src/lib.rs:369:14
[INFO] [stdout]     |
[INFO] [stdout] 369 |     .backend(merfolk_backend_http::Http::builder().build().unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_backend_http`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_backend_http`, use `cargo add merfolk_backend_http` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `merfolk_frontend_register`
[INFO] [stdout]    --> src/lib.rs:370:15
[INFO] [stdout]     |
[INFO] [stdout] 370 |     .frontend(merfolk_frontend_register::Register::builder().build().unwrap())
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_frontend_register`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_frontend_register`, use `cargo add merfolk_frontend_register` to add it to your `Cargo.toml`
[INFO] [stdout] help: there is an enum variant `merfolk::Error::Register`; try using the variant's enum
[INFO] [stdout]     |
[INFO] [stdout] 370 -     .frontend(merfolk_frontend_register::Register::builder().build().unwrap())
[INFO] [stdout] 370 +     .frontend(merfolk::Error::builder().build().unwrap())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:373:18
[INFO] [stdout]     |
[INFO] [stdout] 373 | merfolk.backend(|b| b.stop().unwrap()).unwrap();
[INFO] [stdout]     |                  ^  - type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 373 | merfolk.backend(|b: /* Type */| b.stop().unwrap()).unwrap();
[INFO] [stdout]     |                   ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Mer<B,F>::middlewares (line 388) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `merfolk_backend_http`
[INFO] [stdout]    --> src/lib.rs:391:5
[INFO] [stdout]     |
[INFO] [stdout] 391 | use merfolk_backend_http::Http;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_backend_http`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_backend_http`, use `cargo add merfolk_backend_http` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `merfolk_middleware_authentication`
[INFO] [stdout]    --> src/lib.rs:392:5
[INFO] [stdout]     |
[INFO] [stdout] 392 | use merfolk_middleware_authentication::Authentication;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_middleware_authentication`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_middleware_authentication`, use `cargo add merfolk_middleware_authentication` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `merfolk_backend_http`
[INFO] [stdout]    --> src/lib.rs:395:14
[INFO] [stdout]     |
[INFO] [stdout] 395 |     .backend(merfolk_backend_http::Http::builder().build().unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_backend_http`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_backend_http`, use `cargo add merfolk_backend_http` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `merfolk_frontend_register`
[INFO] [stdout]    --> src/lib.rs:396:15
[INFO] [stdout]     |
[INFO] [stdout] 396 |     .frontend(merfolk_frontend_register::Register::builder().build().unwrap())
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_frontend_register`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_frontend_register`, use `cargo add merfolk_frontend_register` to add it to your `Cargo.toml`
[INFO] [stdout] help: there is an enum variant `merfolk::Error::Register`; try using the variant's enum
[INFO] [stdout]     |
[INFO] [stdout] 396 -     .frontend(merfolk_frontend_register::Register::builder().build().unwrap())
[INFO] [stdout] 396 +     .frontend(merfolk::Error::builder().build().unwrap())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 103) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `merfolk_backend_http`
[INFO] [stdout]    --> src/lib.rs:107:5
[INFO] [stdout]     |
[INFO] [stdout] 107 | use merfolk_backend_http::Http;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_backend_http`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_backend_http`, use `cargo add merfolk_backend_http` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `merfolk_frontend_register`
[INFO] [stdout]    --> src/lib.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 | use merfolk_frontend_register::Register;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_frontend_register`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_frontend_register`, use `cargo add merfolk_frontend_register` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `merfolk_frontend_derive`
[INFO] [stdout]    --> src/lib.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 109 | use merfolk_frontend_derive::frontend;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_frontend_derive`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_frontend_derive`, use `cargo add merfolk_frontend_derive` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `merfolk_frontend_duplex`
[INFO] [stdout]    --> src/lib.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 110 | use merfolk_frontend_duplex::Duplex;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_frontend_duplex`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_frontend_duplex`, use `cargo add merfolk_frontend_duplex` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `merfolk_middleware_router`
[INFO] [stdout]    --> src/lib.rs:111:5
[INFO] [stdout]     |
[INFO] [stdout] 111 | use merfolk_middleware_router::Router;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_middleware_router`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_middleware_router`, use `cargo add merfolk_middleware_router` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `builder` found for struct `main::Receiver` in the current scope
[INFO] [stdout]    --> src/lib.rs:135:35
[INFO] [stdout]     |
[INFO] [stdout] 115 | struct Receiver {}
[INFO] [stdout]     | --------------- function or associated item `builder` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 135 | let receiver_frontend = Receiver::builder().build().unwrap();
[INFO] [stdout]     |                                   ^^^^^^^ function or associated item not found in `main::Receiver`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Mer<B,F>::frontend (line 340) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `merfolk_backend_http`
[INFO] [stdout]    --> src/lib.rs:345:14
[INFO] [stdout]     |
[INFO] [stdout] 345 |     .backend(merfolk_backend_http::Http::builder().build().unwrap())
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_backend_http`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_backend_http`, use `cargo add merfolk_backend_http` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `merfolk_frontend_register`
[INFO] [stdout]    --> src/lib.rs:346:15
[INFO] [stdout]     |
[INFO] [stdout] 346 |     .frontend(merfolk_frontend_register::Register::builder().build().unwrap())
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `merfolk_frontend_register`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `merfolk_frontend_register`, use `cargo add merfolk_frontend_register` to add it to your `Cargo.toml`
[INFO] [stdout] help: there is an enum variant `merfolk::Error::Register`; try using the variant's enum
[INFO] [stdout]     |
[INFO] [stdout] 346 -     .frontend(merfolk_frontend_register::Register::builder().build().unwrap())
[INFO] [stdout] 346 +     .frontend(merfolk::Error::builder().build().unwrap())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:349:37
[INFO] [stdout]     |
[INFO] [stdout] 349 | let result: i32 = merfolk.frontend(|f| f.call("add", &(1, 2)).unwrap()).unwrap();
[INFO] [stdout]     |                                     ^  - type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 349 | let result: i32 = merfolk.frontend(|f: /* Type */| f.call("add", &(1, 2)).unwrap()).unwrap();
[INFO] [stdout]     |                                      ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0433.
[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 - (line 103)
[INFO] [stdout]     src/lib.rs - (line 32)
[INFO] [stdout]     src/lib.rs - (line 76)
[INFO] [stdout]     src/lib.rs - Mer<B,F>::backend (line 364)
[INFO] [stdout]     src/lib.rs - Mer<B,F>::frontend (line 340)
[INFO] [stdout]     src/lib.rs - Mer<B,F>::middlewares (line 388)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 6 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.45s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "7bc0362425687a05929d75f8c2fa25f4aa163ddf7a2a903f0abbeb82ffc5d133", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bc0362425687a05929d75f8c2fa25f4aa163ddf7a2a903f0abbeb82ffc5d133", kill_on_drop: false }`
[INFO] [stdout] 7bc0362425687a05929d75f8c2fa25f4aa163ddf7a2a903f0abbeb82ffc5d133
