[Regression] v1.100.0 fails to install via poetry with rust build error

[inducer]

Description

Update via steps below, see build error in log.

Steps to reproduce

• git fetch
• git checkout v1.100.0
• poetry install -E postgres -E url-preview -v
• Observe error below

Homeserver

(self-hosted, tiker.net)

Synapse Version

1.100.0

Installation Method

Other (please mention below)

Database

postgres

Workers

Single process

Platform

Debian testing

Configuration

No.

Relevant log output

Compiling regex v1.10.3                                                                      
             Running `rustc --crate-name regex --edition=2021 /var/lib/matrix-synapse/.cargo/registry/src/github.heygears.com-1ecc6299db9ec823/regex-1.10.3/src/lib.rs --error-format=json --json=diagnostic-rendered-ans
i,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="perf"' --cfg 'feature="perf-backtrack"' --cfg 'feature="
perf-cache"' --cfg 'feature="perf-dfa"' --cfg 'feature="perf-inline"' --cfg 'feature="perf-literal"' --cfg 'feature="perf-onepass"' --cfg 'feature="std"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"
' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=5
faec55560279597 -C extra-filename=-5faec55560279597 --out-dir /var/lib/matrix-synapse/pack/synapse/target/release/deps -L dependency=/var/lib/matrix-synapse/pack/synapse/target/release/deps --extern aho_coras
ick=/var/lib/matrix-synapse/pack/synapse/target/release/deps/libaho_corasick-3c5f9e24fb6393b3.rmeta --extern memchr=/var/lib/matrix-synapse/pack/synapse/target/release/deps/libmemchr-7b552a2161c2dd84.rmeta --
extern regex_automata=/var/lib/matrix-synapse/pack/synapse/target/release/deps/libregex_automata-b0e45c92bfe0eced.rmeta --extern regex_syntax=/var/lib/matrix-synapse/pack/synapse/target/release/deps/libregex_
syntax-473b04fffb71230f.rmeta --cap-lints allow`                                                        
        error[E0519]: the current crate is indistinguishable from one of its dependencies: it has the same crate-name `once_cell` and was compiled with the same `-C metadata` arguments. This will result in sy
mbol conflicts between the two.                                                                                                                                                                                 
          --> /var/lib/matrix-synapse/.cargo/registry/src/github.heygears.com-1ecc6299db9ec823/pyo3-build-config-0.20.2/src/lib.rs:22:5
           |                                                                                                                                                                                                    
        22 | use once_cell::sync::OnceCell;                                                             
           |     ^^^^^^^^^                                                                                                                                                                                      
                                                                                                        
           Compiling syn v2.0.48                                                                                                                                                                                
             Running `rustc --crate-name syn --edition=2021 /var/lib/matrix-synapse/.cargo/registry/src/github.heygears.com-1ecc6299db9ec823/syn-2.0.48/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,ar
tifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debug-assertions=off --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'featu
re="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' -C metadata=960da81079025a69 -C extra-filename=-960da8107902
5a69 --out-dir /var/lib/matrix-synapse/pack/synapse/target/release/deps -L dependency=/var/lib/matrix-synapse/pack/synapse/target/release/deps --extern proc_macro2=/var/lib/matrix-synapse/pack/synapse/target/
release/deps/libproc_macro2-c885d1610088d5d0.rmeta --extern quote=/var/lib/matrix-synapse/pack/synapse/target/release/deps/libquote-f65546044231e129.rmeta --extern unicode_ident=/var/lib/matrix-synapse/pack/s
ynapse/target/release/deps/libunicode_ident-2a373d9e07b879c3.rmeta --cap-lints allow`                   
        For more information about this error, try `rustc --explain E0519`.                                                                                                                                     
        error: could not compile `pyo3-build-config` due to previous error

Anything else that would be useful to know?

Rust toolchain:

• cargo 1.69.1
• rustc 1.70.0

Both installed via apt from Debian.

[inducer]

Nvm, if the rust toolchain is installed via rustup, this does not occur, so this may be Debian-specific nonsense. Sorry for the noise.