[INFO] fetching crate overloading 0.1.2...
[INFO] testing overloading-0.1.2 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate overloading 0.1.2 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate overloading 0.1.2
[INFO] finished tweaking crates.io crate overloading 0.1.2
[INFO] tweaked toml for crates.io crate overloading 0.1.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate overloading 0.1.2 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25bcc01fc08067b27cf6cd7189bf21ddb58fbb10fcb5eb7e298ac42523d32699
[INFO] running `Command { std: "docker" "start" "-a" "25bcc01fc08067b27cf6cd7189bf21ddb58fbb10fcb5eb7e298ac42523d32699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25bcc01fc08067b27cf6cd7189bf21ddb58fbb10fcb5eb7e298ac42523d32699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25bcc01fc08067b27cf6cd7189bf21ddb58fbb10fcb5eb7e298ac42523d32699", kill_on_drop: false }`
[INFO] [stdout] 25bcc01fc08067b27cf6cd7189bf21ddb58fbb10fcb5eb7e298ac42523d32699
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3638856211fcdcb47d16827f4861be9a7351bc32f939ec76701c3020de170964
[INFO] running `Command { std: "docker" "start" "-a" "3638856211fcdcb47d16827f4861be9a7351bc32f939ec76701c3020de170964", kill_on_drop: false }`
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling overloading v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "3638856211fcdcb47d16827f4861be9a7351bc32f939ec76701c3020de170964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3638856211fcdcb47d16827f4861be9a7351bc32f939ec76701c3020de170964", kill_on_drop: false }`
[INFO] [stdout] 3638856211fcdcb47d16827f4861be9a7351bc32f939ec76701c3020de170964
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f405cedee3ac6f1aec254c94e73af75114c57a4d99afd261bfc39d01c084101
[INFO] running `Command { std: "docker" "start" "-a" "4f405cedee3ac6f1aec254c94e73af75114c57a4d99afd261bfc39d01c084101", kill_on_drop: false }`
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling overloading v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "4f405cedee3ac6f1aec254c94e73af75114c57a4d99afd261bfc39d01c084101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f405cedee3ac6f1aec254c94e73af75114c57a4d99afd261bfc39d01c084101", kill_on_drop: false }`
[INFO] [stdout] 4f405cedee3ac6f1aec254c94e73af75114c57a4d99afd261bfc39d01c084101
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2217603da9c7190e8a8acd52d1189fbab02b50ea803858f5fbbb004b7de641b6
[INFO] running `Command { std: "docker" "start" "-a" "2217603da9c7190e8a8acd52d1189fbab02b50ea803858f5fbbb004b7de641b6", 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/overloading-920bf16b13e39322)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_overloading.rs (/opt/rustwide/target/debug/deps/test_overloading-046a4adb24baceb5)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test ... ok
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests overloading
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 39) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 11) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 39) stdout ----
[INFO] [stdout] error[E0658]: the extern "rust-call" ABI is experimental and subject to change
[INFO] [stdout]  --> src/lib.rs:44:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     extern "rust-call" fn call_once(self, (abc,): (String,)) -> Self::Output {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]   = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the extern "rust-call" ABI is experimental and subject to change
[INFO] [stdout]   --> src/lib.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     extern "rust-call" fn call_mut(&mut self, (abc,): (String,)) -> Self::Output {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the extern "rust-call" ABI is experimental and subject to change
[INFO] [stdout]   --> src/lib.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     extern "rust-call" fn call(&self, (abc,): (String,)) -> Self::Output {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the extern "rust-call" ABI is experimental and subject to change
[INFO] [stdout]   --> src/lib.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     extern "rust-call" fn call_once(self, _: ()) -> Self::Output {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the extern "rust-call" ABI is experimental and subject to change
[INFO] [stdout]   --> src/lib.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 28 |     extern "rust-call" fn call_mut(&mut self, _: ()) -> Self::Output {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the extern "rust-call" ABI is experimental and subject to change
[INFO] [stdout]   --> src/lib.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     extern "rust-call" fn call(&self, _: ()) -> Self::Output {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `fn_traits`
[INFO] [stdout]  --> src/lib.rs:44:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     extern "rust-call" fn call_once(self, (abc,): (String,)) -> Self::Output {
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]   = help: add `#![feature(fn_traits)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `fn_traits`
[INFO] [stdout]   --> src/lib.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     extern "rust-call" fn call_mut(&mut self, (abc,): (String,)) -> Self::Output {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(fn_traits)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `fn_traits`
[INFO] [stdout]   --> src/lib.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     extern "rust-call" fn call(&self, (abc,): (String,)) -> Self::Output {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(fn_traits)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `fn_traits`
[INFO] [stdout]   --> src/lib.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     extern "rust-call" fn call_once(self, _: ()) -> Self::Output {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(fn_traits)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `fn_traits`
[INFO] [stdout]   --> src/lib.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     extern "rust-call" fn call_mut(&mut self, _: ()) -> Self::Output {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(fn_traits)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature `fn_traits`
[INFO] [stdout]   --> src/lib.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     extern "rust-call" fn call(&self, _: ()) -> Self::Output {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(fn_traits)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
[INFO] [stdout]  --> src/lib.rs:42:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl std::ops::FnOnce<(String,)> for overloaded {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]   = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0183]: manual implementations of `FnOnce` are experimental
[INFO] [stdout]  --> src/lib.rs:42:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl std::ops::FnOnce<(String,)> for overloaded {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ manual implementations of `FnOnce` are experimental
[INFO] [stdout]   |
[INFO] [stdout]   = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
[INFO] [stdout]   --> src/lib.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl std::ops::FnOnce<()> for overloaded {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0183]: manual implementations of `FnOnce` are experimental
[INFO] [stdout]   --> src/lib.rs:58:6
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl std::ops::FnOnce<()> for overloaded {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^ manual implementations of `FnOnce` are experimental
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
[INFO] [stdout]   --> src/lib.rs:48:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl std::ops::FnMut<(String,)> for overloaded {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0183]: manual implementations of `FnMut` are experimental
[INFO] [stdout]   --> src/lib.rs:48:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl std::ops::FnMut<(String,)> for overloaded {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^ manual implementations of `FnMut` are experimental
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
[INFO] [stdout]   --> src/lib.rs:64:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl std::ops::FnMut<()> for overloaded {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0183]: manual implementations of `FnMut` are experimental
[INFO] [stdout]   --> src/lib.rs:64:6
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl std::ops::FnMut<()> for overloaded {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^ manual implementations of `FnMut` are experimental
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
[INFO] [stdout]   --> src/lib.rs:53:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl std::ops::Fn<(String,)> for overloaded {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0183]: manual implementations of `Fn` are experimental
[INFO] [stdout]   --> src/lib.rs:53:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl std::ops::Fn<(String,)> for overloaded {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^ manual implementations of `Fn` are experimental
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
[INFO] [stdout]   --> src/lib.rs:69:6
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl std::ops::Fn<()> for overloaded {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2025-08-13; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] error[E0183]: manual implementations of `Fn` are experimental
[INFO] [stdout]   --> src/lib.rs:69:6
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl std::ops::Fn<()> for overloaded {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^ manual implementations of `Fn` are experimental
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 24 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0183, E0658.
[INFO] [stdout] For more information about an error, try `rustc --explain E0183`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 39)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.34s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "2217603da9c7190e8a8acd52d1189fbab02b50ea803858f5fbbb004b7de641b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2217603da9c7190e8a8acd52d1189fbab02b50ea803858f5fbbb004b7de641b6", kill_on_drop: false }`
[INFO] [stdout] 2217603da9c7190e8a8acd52d1189fbab02b50ea803858f5fbbb004b7de641b6