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Pyo3 fails to compile in a fresh project using the exact readme example code for Using python from rust on multiple systems (Windows, Linux, macOS) with: error[E0119]: conflicting implementations of trait python::IntoPyDictPointer for type (_, _)
The full error message, code as well as steps are below.
🌍 Environment
I tried on three systems: Windows 10 Pro, WSL Ubuntu, OSX 10.11.6 and Linux Mint 19
Your python version: probably irrelevant, because compilation failed. I use both Python2.7 and 3.6
How did you install python (e.g. apt or pyenv)? Did you use a virtualenv?: probably irrelevant
Your rust version (rustc --version): rustc 1.30.0-nightly (f2302daef 2018-09-12)
💥 Reproducing
New Project cargo new pyotest && cd pyotest
Add pyo3 = "0.3" to dependencies in Cargo.toml¹ as shown in README.md
Copy the example code from the README.md² to src/main.rs
Install nightly with rustup install nightly
Set toolchain to nightly echo "nightly" >> rust-toolchain
Check version with rustc --version
Execute cargo run
See my output of cargo run
Compiling version_check v0.1.4
Compiling proc-macro2 v0.4.19
Compiling libc v0.2.43
Compiling unicode-xid v0.1.0
Compiling ucd-util v0.1.1
Compiling regex v1.0.5
Compiling cfg-if v0.1.5
Compiling proc-macro-hack-impl v0.4.1
Compiling utf8-ranges v1.0.1
Compiling num-traits v0.2.5
Compiling spin v0.4.9
Compiling log v0.4.5
Compiling regex-syntax v0.6.2
Compiling lazy_static v1.1.0
Compiling memchr v2.0.2
Compiling proc-macro-hack v0.4.1
Compiling aho-corasick v0.6.8
Compiling quote v0.6.8
Compiling mashup-impl v0.1.7
Compiling thread_local v0.3.6
Compiling syn v0.14.9
Compiling mashup v0.1.7
Compiling pyo3-derive-backend v0.3.2
Compiling pyo3 v0.3.2
Compiling pyo3cls v0.3.2
error[E0119]: conflicting implementations of trait `python::IntoPyDictPointer` for type `(_, _)`:
--> /home/d0/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.3.2/src/objects/dict.rs:246:1
|
231 | / impl <K, V, I> IntoPyDictPointer for I
232 | | where
233 | | K: ToPyObject,
234 | | V: ToPyObject,
... |
243 | | }
244 | | }
| |_- first implementation here
245 |
246 | impl<K: ToPyObject, V: ToPyObject> IntoPyDictPointer for (K, V) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `(_, _)`
|
= note: upstream crates may add new impl of trait `std::iter::Iterator` for type `(_, _)` in future versions
error[E0119]: conflicting implementations of trait `python::IntoPyDictPointer` for type `()`:
--> /home/d0/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.3.2/src/noargs.rs:66:1
|
66 | impl IntoPyDictPointer for () {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `()`
|
::: /home/d0/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.3.2/src/objects/dict.rs:231:1
|
231 | / impl <K, V, I> IntoPyDictPointer for I
232 | | where
233 | | K: ToPyObject,
234 | | V: ToPyObject,
... |
243 | | }
244 | | }
| |_- first implementation here
|
= note: upstream crates may add new impl of trait `std::iter::Iterator` for type `()` in future versions
error[E0119]: conflicting implementations of trait `python::IntoPyDictPointer` for type `((_, _),)`:
--> /home/d0/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.3.2/src/objects/dict.rs:255:5
|
231 | / impl <K, V, I> IntoPyDictPointer for I
232 | | where
233 | | K: ToPyObject,
234 | | V: ToPyObject,
... |
243 | | }
244 | | }
| |_- first implementation here
...
255 | impl<$($T1: ToPyObject, $T2: ToPyObject),+> IntoPyDictPointer for ($(($T1,$T2),)+) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `((_, _),)`
...
264 | dict_conversion!(1, (ref0, 0, A1, A2));
| --------------------------------------- in this macro invocation
|
= note: upstream crates may add new impl of trait `std::iter::Iterator` for type `((_, _),)` in future versions
error[E0119]: conflicting implementations of trait `python::IntoPyDictPointer` for type `((_, _), (_, _))`:
--> /home/d0/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.3.2/src/objects/dict.rs:255:5
|
231 | / impl <K, V, I> IntoPyDictPointer for I
232 | | where
233 | | K: ToPyObject,
234 | | V: ToPyObject,
... |
243 | | }
244 | | }
| |_- first implementation here
...
255 | impl<$($T1: ToPyObject, $T2: ToPyObject),+> IntoPyDictPointer for ($(($T1,$T2),)+) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `((_, _), (_, _))`
...
265 | dict_conversion!(2, (ref0, 0, A1, A2), (ref1, 1, B1, B2));
| ---------------------------------------------------------- in this macro invocation
|
= note: upstream crates may add new impl of trait `std::iter::Iterator` for type `((_, _), (_, _))` in future versions
error[E0119]: conflicting implementations of trait `python::IntoPyDictPointer` for type `((_, _), (_, _), (_, _))`:
--> /home/d0/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.3.2/src/objects/dict.rs:255:5
|
231 | / impl <K, V, I> IntoPyDictPointer for I
232 | | where
233 | | K: ToPyObject,
234 | | V: ToPyObject,
... |
243 | | }
244 | | }
| |_- first implementation here
...
255 | impl<$($T1: ToPyObject, $T2: ToPyObject),+> IntoPyDictPointer for ($(($T1,$T2),)+) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `((_, _), (_, _), (_, _))`
...
266 | dict_conversion!(3, (ref0, 0, A1, A2), (ref1, 1, B1, B2), (ref2, 2, C1, C2));
| ----------------------------------------------------------------------------- in this macro invocation
|
= note: upstream crates may add new impl of trait `std::iter::Iterator` for type `((_, _), (_, _), (_, _))` in future versions
error[E0119]: conflicting implementations of trait `python::IntoPyDictPointer` for type `((_, _), (_, _), (_, _), (_, _))`:
--> /home/d0/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.3.2/src/objects/dict.rs:255:5
|
231 | / impl <K, V, I> IntoPyDictPointer for I
232 | | where
233 | | K: ToPyObject,
234 | | V: ToPyObject,
... |
243 | | }
244 | | }
| |_- first implementation here
...
255 | impl<$($T1: ToPyObject, $T2: ToPyObject),+> IntoPyDictPointer for ($(($T1,$T2),)+) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `((_, _), (_, _), (_, _), (_, _))`
...
267 | / dict_conversion!(4, (ref0, 0, A1, A2), (ref1, 1, B1, B2), (ref2, 2, C1, C2),
268 | | (ref3, 3, D1, D2));
| |____________________________________- in this macro invocation
|
= note: upstream crates may add new impl of trait `std::iter::Iterator` for type `((_, _), (_, _), (_, _), (_, _))` in future versions
error[E0119]: conflicting implementations of trait `python::IntoPyDictPointer` for type `((_, _), (_, _), (_, _), (_, _), (_, _))`:
--> /home/d0/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.3.2/src/objects/dict.rs:255:5
|
231 | / impl <K, V, I> IntoPyDictPointer for I
232 | | where
233 | | K: ToPyObject,
234 | | V: ToPyObject,
... |
243 | | }
244 | | }
| |_- first implementation here
...
255 | impl<$($T1: ToPyObject, $T2: ToPyObject),+> IntoPyDictPointer for ($(($T1,$T2),)+) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `((_, _), (_, _), (_, _), (_, _), (_, _))`
...
269 | / dict_conversion!(5, (ref0, 0, A1, A2), (ref1, 1, B1, B2), (ref2, 2, C1, C2),
270 | | (ref3, 3, D1, D2), (ref4, 4, E1, E2));
| |_______________________________________________________- in this macro invocation
|
= note: upstream crates may add new impl of trait `std::iter::Iterator` for type `((_, _), (_, _), (_, _), (_, _), (_, _))` in future versions
error[E0119]: conflicting implementations of trait `python::IntoPyDictPointer` for type `((_, _), (_, _), (_, _), (_, _), (_, _), (_, _))`:
--> /home/d0/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.3.2/src/objects/dict.rs:255:5
|
231 | / impl <K, V, I> IntoPyDictPointer for I
232 | | where
233 | | K: ToPyObject,
234 | | V: ToPyObject,
... |
243 | | }
244 | | }
| |_- first implementation here
...
255 | impl<$($T1: ToPyObject, $T2: ToPyObject),+> IntoPyDictPointer for ($(($T1,$T2),)+) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `((_, _), (_, _), (_, _), (_, _), (_, _), (_, _))`
...
271 | / dict_conversion!(6, (ref0, 0, A1, A2), (ref1, 1, B1, B2), (ref2, 2, C1, C2),
272 | | (ref3, 3, D1, D2), (ref4, 4, E1, E2), (ref5, 5, F1, F2));
| |__________________________________________________________________________- in this macro invocation
|
= note: upstream crates may add new impl of trait `std::iter::Iterator` for type `((_, _), (_, _), (_, _), (_, _), (_, _), (_, _))` in future versions
error[E0119]: conflicting implementations of trait `python::IntoPyDictPointer` for type `((_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _))`:
--> /home/d0/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.3.2/src/objects/dict.rs:255:5
|
231 | / impl <K, V, I> IntoPyDictPointer for I
232 | | where
233 | | K: ToPyObject,
234 | | V: ToPyObject,
... |
243 | | }
244 | | }
| |_- first implementation here
...
255 | impl<$($T1: ToPyObject, $T2: ToPyObject),+> IntoPyDictPointer for ($(($T1,$T2),)+) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `((_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _))`
...
273 | / dict_conversion!(7, (ref0, 0, A1, A2), (ref1, 1, B1, B2), (ref2, 2, C1, C2),
274 | | (ref3, 3, D1, D2), (ref4, 4, E1, E2), (ref5, 5, F1, F2), (ref6, 6, G1, G2));
| |_____________________________________________________________________________________________- in this macro invocation
|
= note: upstream crates may add new impl of trait `std::iter::Iterator` for type `((_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _))` in future versions
error[E0119]: conflicting implementations of trait `python::IntoPyDictPointer` for type `((_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _))`:
--> /home/d0/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.3.2/src/objects/dict.rs:255:5
|
231 | / impl <K, V, I> IntoPyDictPointer for I
232 | | where
233 | | K: ToPyObject,
234 | | V: ToPyObject,
... |
243 | | }
244 | | }
| |_- first implementation here
...
255 | impl<$($T1: ToPyObject, $T2: ToPyObject),+> IntoPyDictPointer for ($(($T1,$T2),)+) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `((_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _))`
...
275 | / dict_conversion!(8, (ref0, 0, A1, A2), (ref1, 1, B1, B2), (ref2, 2, C1, C2),
276 | | (ref3, 3, D1, D2), (ref4, 4, E1, E2), (ref5, 5, F1, F2), (ref6, 6, G1, G2),
277 | | (ref7, 7, H1, H2));
| |____________________________________- in this macro invocation
|
= note: upstream crates may add new impl of trait `std::iter::Iterator` for type `((_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _))` in future versions
error[E0119]: conflicting implementations of trait `python::IntoPyDictPointer` for type `((_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _))`:
--> /home/d0/.cargo/registry/src/github.com-1ecc6299db9ec823/pyo3-0.3.2/src/objects/dict.rs:255:5
|
231 | / impl <K, V, I> IntoPyDictPointer for I
232 | | where
233 | | K: ToPyObject,
234 | | V: ToPyObject,
... |
243 | | }
244 | | }
| |_- first implementation here
...
255 | impl<$($T1: ToPyObject, $T2: ToPyObject),+> IntoPyDictPointer for ($(($T1,$T2),)+) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `((_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _))`
...
278 | / dict_conversion!(9, (ref0, 0, A1, A2), (ref1, 1, B1, B2), (ref2, 2, C1, C2),
279 | | (ref3, 3, D1, D2), (ref4, 4, E1, E2), (ref5, 5, F1, F2), (ref6, 6, G1, G2),
280 | | (ref7, 7, H1, H2), (ref8, 8, I1, I2));
| |_______________________________________________________- in this macro invocation
|
= note: upstream crates may add new impl of trait `std::iter::Iterator` for type `((_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _), (_, _))` in future versions
error: aborting due to 11 previous errors
For more information about this error, try `rustc --explain E0119`.
error: Could not compile `pyo3`.
To learn more, run the command again with --verbose.
¹ My Cargo.toml:
[package]
name = "pyotest"
version = "0.1.0"
authors = ["atoav <[email protected]>"]
[dependencies]
pyo3 = "0.3"
² A exact copy of the code I used:
#![feature(specialization)]
extern crate pyo3;
use pyo3::prelude::*;
fn main() -> PyResult<()> {
let gil = Python::acquire_gil();
let py = gil.python();
let sys = py.import("sys")?;
let version: String = sys.get("version")?.extract()?;
let locals = PyDict::new(py);
locals.set_item("os", py.import("os")?)?;
let user: String = py.eval("os.getenv('USER') or os.getenv('USERNAME')", None, Some(&locals))?.extract()?;
println!("Hello {}, I'm Python {}", user, version);
Ok(())
}
The text was updated successfully, but these errors were encountered:
🐛 Bug Reports
Pyo3 fails to compile in a fresh project using the exact readme example code for Using python from rust on multiple systems (Windows, Linux, macOS) with:
error[E0119]: conflicting implementations of trait
python::IntoPyDictPointerfor type(_, _)The full error message, code as well as steps are below.
🌍 Environment
rustc --version): rustc 1.30.0-nightly (f2302daef 2018-09-12)💥 Reproducing
cargo new pyotest && cd pyotestpyo3 = "0.3"to dependencies in Cargo.toml¹ as shown in README.mdrustup install nightlyecho "nightly" >> rust-toolchainrustc --versioncargo runSee my output of
cargo run¹ My Cargo.toml:
² A exact copy of the code I used:
The text was updated successfully, but these errors were encountered: