Hi, I encountered the following error while building pgvectorscale and am trying to understand what caused it and how to fix it. Any insights would be greatly appreciated.
error: `proc-macro` crate types currently cannot export any items other than functions tagged with `#[proc_macro]`, `#[proc_macro_derive]`, or `#[proc_macro_attribute]`
--> /home/xingxue/.cargo/registry/src/index.crates.io-7f555b6b8ccf4919/paste-impl-0.1.18/src/lib.rs:25:1
|
25 | pub fn expr(input: TokenStream) -> TokenStream {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0463]: can't find crate for `proc_macro_hack`
--> /home/xingxue/.cargo/registry/src/index.crates.io-7f555b6b8ccf4919/paste-impl-0.1.18/src/lib.rs:10:5
|
10 | use proc_macro_hack::proc_macro_hack;
| ^^^^^^^^^^^^^^^ can't find crate
The cargo tree is something like the following:
|-- pgrx v0.12.9
| |-- atomic-traits v0.3.0
| | `-- cfg-if v1.0.1
....
| |-- proc-macro2 v1.0.95 (*)
| |-- quote v1.0.40 (*)
| `-- syn v2.0.103 (*)
`-- simdeez v1.0.8
|-- cfg-if v0.1.10
`-- paste v0.1.18
|-- paste-impl v0.1.18 (proc-macro)
| `-- proc-macro-hack v0.5.20+deprecated (proc-macro)
`-- proc-macro-hack v0.5.20+deprecated (proc-macro)
kpreid
June 25, 2025, 12:17am
2
This may indicate some corrupted build files or sources. Try this to rule that out:
Run cargo clean
Delete /home/xingxue/.cargo/registry/src/index.crates.io-7f555b6b8ccf4919/
Try to build again.
Cargo will re-download and rebuild everything.
1 Like
Thanks. I executed these steps but am still getting the same error somehow. I didn't hit this error early last week. Wonder if anything has changed in crates involved.
kpreid
June 25, 2025, 1:08am
4
Can you post the complete output of cargo build? When troubleshooting problems like this one, it's very important to look at the details and, particularly, what error appears first .
Yeah, this is the output from cargo build.
Updating crates.io index
Downloading crates ...
Downloaded ciborium-io v0.2.2
Downloaded byteorder v1.5.0
Downloaded crunchy v0.2.3
Downloaded criterion-plot v0.5.0
Downloaded equivalent v1.0.2
Downloaded convert_case v0.6.0
Downloaded siphasher v1.0.1
Downloaded sptr v0.3.2
Downloaded hermit-abi v0.5.2
Downloaded idna_adapter v1.2.1
Downloaded synstructure v0.13.2
Downloaded serial_test v3.2.0
Downloaded windows-targets v0.52.6
Downloaded atomic-traits v0.3.0
Downloaded ptr_meta_derive v0.1.4
Downloaded unescape v0.1.0
Downloaded phf_shared v0.11.3
Downloaded subtle v2.6.1
Downloaded winapi-util v0.1.9
Downloaded pathsearch v0.2.0
Downloaded scopeguard v1.2.0
Downloaded serial_test_derive v3.2.0
Downloaded base64 v0.22.1
Downloaded whoami v1.6.0
Downloaded plotters-backend v0.3.7
Downloaded semver-parser v0.10.3
Downloaded rend v0.4.2
Downloaded rand_chacha v0.3.1
Downloaded pgrx-tests v0.12.9
Downloaded is_ci v1.2.0
Downloaded rand_xorshift v0.4.0
Downloaded paste v0.1.18
Downloaded oorandom v11.1.5
Downloaded owo-colors v4.2.2
Downloaded paste v1.0.15
Downloaded parking_lot_core v0.9.11
Downloaded zerovec-derive v0.11.1
Downloaded js-sys v0.3.77
Downloaded parking_lot v0.12.4
Downloaded rayon-core v1.12.1
Downloaded miniz_oxide v0.8.9
Downloaded zerotrie v0.2.2
Downloaded rand v0.9.1
Downloaded mio v1.0.4
Downloaded scc v2.3.4
Downloaded itertools v0.10.5
Downloaded pgrx v0.12.9
Downloaded proptest v1.7.0
Downloaded nom v7.1.3
Downloaded zerovec v0.11.2
Downloaded gimli v0.31.1
Downloaded winnow v0.7.11
Downloaded itertools v0.13.0
Downloaded sysinfo v0.30.13
Downloaded unicode-normalization v0.1.24
Downloaded syn v1.0.109
Downloaded rayon v1.10.0
Downloaded regex-syntax v0.8.5
Downloaded syn v2.0.104
Downloaded rustix v1.0.7
Downloaded bitvec v1.0.1
Downloaded zerocopy v0.8.26
Downloaded bindgen v0.70.1
Downloaded aho-corasick v1.1.3
Downloaded unicode-width v0.1.14
Downloaded regex v1.11.1
Downloaded serde_json v1.0.140
Downloaded plotters v0.3.7
Downloaded wasi v0.14.2+wasi-0.2.4
Downloaded object v0.36.7
Downloaded regex-automata v0.4.9
Downloaded minimal-lexical v0.2.1
Downloaded rkyv v0.7.45
Downloaded ntapi v0.4.1
Downloaded pest v2.8.1
Downloaded petgraph v0.6.5
Downloaded libc v0.2.174
Downloaded icu_properties_data v2.0.1
Downloaded windows_x86_64_gnullvm v0.52.6
Downloaded windows_i686_gnullvm v0.52.6
Downloaded futures-util v0.3.31
Downloaded windows_aarch64_gnullvm v0.52.6
Downloaded clap_builder v4.5.40
Downloaded rand v0.8.5
Downloaded tokio-util v0.7.15
Downloaded unicode-segmentation v1.12.0
Downloaded hashbrown v0.15.4
Downloaded serde_derive v1.0.219
Downloaded typenum v1.18.0
Downloaded serde v1.0.219
Downloaded idna v1.0.3
Downloaded memchr v2.7.5
Downloaded zerocopy-derive v0.8.26
Downloaded tokio-postgres v0.7.13
Downloaded redox_syscall v0.5.13
Downloaded web-sys v0.3.77
Downloaded postgres v0.19.10
Downloaded url v2.5.4
Downloaded toml_edit v0.22.27
Downloaded rand_core v0.9.3
Downloaded num-traits v0.2.19
Downloaded pgrx-sql-entity-graph v0.12.9
Downloaded indexmap v2.9.0
Downloaded unicode-bidi v0.3.18
Downloaded thiserror v2.0.12
Downloaded criterion v0.5.1
Downloaded cc v1.2.27
Downloaded windows_x86_64_gnullvm v0.53.0
Downloaded windows_aarch64_msvc v0.53.0
Downloaded windows_aarch64_gnullvm v0.53.0
Downloaded windows_x86_64_gnu v0.52.6
Downloaded windows_x86_64_msvc v0.52.6
Downloaded windows_x86_64_msvc v0.53.0
Downloaded windows_i686_msvc v0.52.6
Downloaded windows_i686_msvc v0.53.0
Downloaded windows_x86_64_gnu v0.53.0
Downloaded windows_i686_gnu v0.52.6
Downloaded windows_i686_gnu v0.53.0
Downloaded windows_i686_gnullvm v0.53.0
Downloaded windows_aarch64_msvc v0.52.6
Downloaded tokio v1.45.1
Downloaded postgres-types v0.2.9
Downloaded serde_cbor v0.11.2
Downloaded wasm-bindgen v0.2.100
Downloaded hashbrown v0.12.3
Downloaded ppv-lite86 v0.2.21
Downloaded ryu v1.0.20
Downloaded r-efi v5.3.0
Downloaded simdeez v1.0.8
Downloaded pgrx-pg-sys v0.12.9
Downloaded memoffset v0.9.1
Downloaded itoa v1.0.15
Downloaded winapi v0.3.9
Downloaded once_cell v1.21.3
Downloaded uuid v1.17.0
Downloaded icu_collections v2.0.0
Downloaded rand_core v0.6.4
Downloaded rand_chacha v0.9.0
Downloaded rkyv_derive v0.7.45
Downloaded proc-macro-hack v0.5.20+deprecated
Downloaded potential_utf v0.1.2
Downloaded postgres-protocol v0.6.8
Downloaded rustc-demangle v0.1.25
Downloaded quote v1.0.40
Downloaded proc-macro2 v1.0.95
Downloaded wyz v0.5.1
Downloaded socket2 v0.5.10
Downloaded seahash v4.1.0
Downloaded sdd v3.0.8
Downloaded unicode-properties v0.1.3
Downloaded plotters-svg v0.3.7
Downloaded paste-impl v0.1.18
Downloaded unicode-ident v1.0.18
Downloaded tinyvec v1.9.0
Downloaded tempfile v3.20.0
Downloaded icu_locale_core v2.0.0
Downloaded half v2.6.0
Downloaded bumpalo v3.19.0
Downloaded windows-core v0.52.0
Downloaded wasm-bindgen-backend v0.2.100
Downloaded wasi v0.11.1+wasi-snapshot-preview1
Downloaded ucd-trie v0.1.7
Downloaded linux-raw-sys v0.9.4
Downloaded heapless v0.8.0
Downloaded backtrace v0.3.75
Downloaded semver v1.0.26
Downloaded pin-project-lite v0.2.16
Downloaded yoke v0.8.0
Downloaded writeable v0.6.1
Downloaded pgrx-pg-config v0.12.9
Downloaded pgrx-macros v0.12.9
Downloaded percent-encoding v2.3.1
Downloaded same-file v1.0.6
Downloaded rustc_version v0.3.3
Downloaded rustc-hash v1.1.0
Downloaded log v0.4.27
Downloaded walkdir v2.5.0
Downloaded toml v0.8.23
Downloaded tap v1.0.1
Downloaded clap v4.5.40
Downloaded bytes v1.10.1
Downloaded wasm-bindgen-shared v0.2.100
Downloaded wasm-bindgen-macro-support v0.2.100
Downloaded version_check v0.9.5
Downloaded tinytemplate v1.2.1
Downloaded tinystr v0.8.1
Downloaded icu_properties v2.0.1
Downloaded icu_normalizer_data v2.0.0
Downloaded icu_normalizer v2.0.0
Downloaded getrandom v0.3.3
Downloaded eyre v0.6.12
Downloaded crossbeam-epoch v0.9.18
Downloaded semver v0.11.0
Downloaded windows-sys v0.59.0
Downloaded rusty-fork v0.3.0
Downloaded rustversion v1.0.21
Downloaded pgrx-bindgen v0.12.9
Downloaded windows-sys v0.60.2
Downloaded yoke-derive v0.8.0
Downloaded toml_write v0.1.2
Downloaded toml_datetime v0.6.11
Downloaded thiserror-impl v2.0.12
Downloaded radium v0.7.0
Downloaded windows-sys v0.52.0
Downloaded quick-error v1.2.3
Downloaded pin-utils v0.1.0
Downloaded md-5 v0.10.6
Downloaded lock_api v0.4.13
Downloaded litemap v0.8.0
Downloaded zerofrom-derive v0.1.6
Downloaded yansi-term v0.1.2
Downloaded wit-bindgen-rt v0.39.0
Downloaded smallvec v1.15.1
Downloaded simdutf8 v0.1.5
Downloaded wasm-bindgen-macro v0.2.100
Downloaded wait-timeout v0.2.1
Downloaded utf8_iter v1.0.4
Downloaded thiserror v1.0.69
Downloaded slab v0.4.10
Downloaded icu_provider v2.0.0
Downloaded hmac v0.12.1
Downloaded half v1.8.3
Downloaded winapi-i686-pc-windows-gnu v0.4.0
Downloaded futures v0.3.31
Downloaded getrandom v0.2.16
Downloaded ciborium v0.2.2
Downloaded camino v1.1.10
Downloaded phf v0.11.3
Downloaded libloading v0.8.8
Downloaded unarray v0.1.4
Downloaded winapi-x86_64-pc-windows-gnu v0.4.0
Downloaded core-foundation-sys v0.8.7
Downloaded anyhow v1.0.98
Downloaded ptr_meta v0.1.4
Downloaded lazy_static v1.5.0
Downloaded is-terminal v0.4.16
Downloaded serde_spanned v0.6.9
Downloaded zerofrom v0.1.6
Downloaded thiserror-impl v1.0.69
Downloaded stringprep v0.1.5
Downloaded stable_deref_trait v1.2.0
Downloaded shlex v1.3.0
Downloaded crossbeam-utils v0.8.21
Downloaded clang-sys v1.8.1
Downloaded wasite v0.1.0
Downloaded glob v0.3.2
Downloaded futures-sink v0.3.31
Downloaded futures-channel v0.3.31
Downloaded displaydoc v0.2.5
Downloaded windows-targets v0.53.2
Downloaded tinyvec_macros v0.1.1
Downloaded supports-color v2.1.0
Downloaded bitflags v2.9.1
Downloaded supports-color v3.0.2
Downloaded indenter v0.3.3
Downloaded annotate-snippets v0.9.2
Downloaded home v0.5.11
Downloaded enum-map-derive v0.17.0
Downloaded clap_derive v4.5.40
Downloaded cargo_metadata v0.18.1
Downloaded async-trait v0.1.88
Downloaded heck v0.5.0
Downloaded generic-array v0.14.7
Downloaded futures-executor v0.3.31
Downloaded futures-core v0.3.31
Downloaded funty v2.0.0
Downloaded form_urlencoded v1.2.1
Downloaded fallible-iterator v0.2.0
Downloaded enum-map v2.7.3
Downloaded either v1.15.0
Downloaded crypto-common v0.1.6
Downloaded futures-task v0.3.31
Downloaded futures-macro v0.3.31
Downloaded futures-io v0.3.31
Downloaded fnv v1.0.7
Downloaded fixedbitset v0.4.2
Downloaded fastrand v2.3.0
Downloaded errno v0.3.13
Downloaded digest v0.10.7
Downloaded crossbeam-deque v0.8.6
Downloaded cee-scape v0.2.0
Downloaded anstyle v1.0.11
Downloaded anes v0.1.6
Downloaded ahash v0.7.8
Downloaded sha2 v0.10.9
Downloaded hash32 v0.3.1
Downloaded cpufeatures v0.2.17
Downloaded clap_lex v0.7.5
Downloaded cast v0.3.0
Downloaded cargo_toml v0.19.2
Downloaded bit-vec v0.8.0
Downloaded cfg-if v0.1.10
Downloaded cexpr v0.6.0
Downloaded bytecheck v0.6.12
Downloaded bit-set v0.8.0
Downloaded clap-cargo v0.14.1
Downloaded ciborium-ll v0.2.2
Downloaded cfg-if v1.0.1
Downloaded cargo-platform v0.1.9
Downloaded block-buffer v0.10.4
Downloaded adler2 v2.0.1
Downloaded addr2line v0.24.2
Downloaded autocfg v1.5.0
Downloaded bytecheck_derive v0.6.12
Downloaded windows v0.52.0
Updating crates.io index
Downloading crates ...
Downloaded cargo-pgrx v0.12.9
Installing cargo-pgrx v0.12.9
Updating crates.io index
Updating crates.io index
Downloading crates ...
Downloaded foreign-types v0.3.2
Downloaded adler v1.0.2
Downloaded colorchoice v1.0.0
Downloaded concolor-control v0.0.7
Downloaded concolor-query v0.0.4
Downloaded atty v0.2.14
Downloaded thread_local v1.1.7
Downloaded clap-cargo v0.14.0
Downloaded camino v1.1.6
Downloaded lazy_static v1.4.0
Downloaded itoa v1.0.11
Downloaded tracing-error v0.2.0
Downloaded strsim v0.10.0
Downloaded semver v1.0.21
Downloaded serde-xml-rs v0.6.0
Downloaded sct v0.7.1
Downloaded tracing-attributes v0.1.27
Downloaded serde_derive v1.0.202
Downloaded unicode-bidi v0.3.15
Downloaded serde v1.0.202
Downloaded unicode-segmentation v1.10.1
Downloaded unicode-normalization v0.1.22
Downloaded ureq v2.8.0
Downloaded winnow v0.6.5
Downloaded winnow v0.5.40
Downloaded tracing-subscriber v0.3.18
Downloaded hashbrown v0.14.3
Downloaded vcpkg v0.2.15
Downloaded webpki-roots v0.25.3
Downloaded syn v2.0.65
Downloaded color-spantrace v0.2.1
Downloaded rustls-webpki v0.101.7
Downloaded git2 v0.17.2
Downloaded regex v1.10.3
Downloaded petgraph v0.6.4
Downloaded idna v0.5.0
Downloaded rustls v0.21.10
Downloaded regex-syntax v0.6.29
Downloaded openssl v0.10.63
Downloaded object v0.32.2
Downloaded regex-syntax v0.8.2
Downloaded rustix v0.38.30
Downloaded gimli v0.28.1
Downloaded clap_builder v4.4.18
Downloaded rayon v1.8.1
Downloaded aho-corasick v1.1.2
Downloaded serde_json v1.0.117
Downloaded regex-automata v0.1.10
Downloaded libssh2-sys v0.3.0
Downloaded toml_edit v0.19.15
Downloaded toml_edit v0.22.12
Downloaded memchr v2.7.1
Downloaded flate2 v1.0.28
Downloaded base64 v0.21.7
Downloaded regex-automata v0.4.5
Downloaded color-eyre v0.6.2
Downloaded bzip2-sys v0.1.11+1.0.8
Downloaded url v2.5.0
Downloaded tracing v0.1.40
Downloaded toml v0.8.10
Downloaded tinyvec v1.6.0
Downloaded libc v0.2.155
Downloaded tar v0.4.40
Downloaded backtrace v0.3.69
Downloaded tracing-core v0.1.32
Downloaded sharded-slab v0.1.7
Downloaded xml-rs v0.8.19
Downloaded unicode-ident v1.0.12
Downloaded toml v0.7.8
Downloaded thiserror v1.0.56
Downloaded subprocess v0.2.9
Downloaded ryu v1.0.18
Downloaded rustls-native-certs v0.6.3
Downloaded proc-macro2 v1.0.83
Downloaded openssl-sys v0.9.99
Downloaded cc v1.0.83
Downloaded anyhow v1.0.79
Downloaded tracing-log v0.2.0
Downloaded tempfile v3.9.0
Downloaded socks v0.3.4
Downloaded once_cell v1.19.0
Downloaded miniz_oxide v0.7.1
Downloaded indexmap v2.1.0
Downloaded indexmap v1.9.3
Downloaded crossbeam-utils v0.8.19
Downloaded cargo-edit v0.12.2
Downloaded bitflags v2.4.2
Downloaded untrusted v0.9.0
Downloaded toml_datetime v0.6.5
Downloaded thiserror-impl v1.0.56
Downloaded terminal_size v0.3.0
Downloaded termcolor v1.4.1
Downloaded smol_str v0.2.1
Downloaded serde_spanned v0.6.5
Downloaded rustc-demangle v0.1.23
Downloaded owo-colors v3.5.0
Downloaded getrandom v0.2.12
Downloaded xattr v1.3.1
Downloaded utf8parse v0.2.1
Downloaded smallvec v1.13.1
Downloaded quote v1.0.36
Downloaded owo-colors v4.0.0
Downloaded overload v0.1.1
Downloaded nu-ansi-term v0.46.0
Downloaded native-tls v0.2.11
Downloaded log v0.4.20
Downloaded jobslot v0.2.14
Downloaded jobserver v0.1.31
Downloaded filetime v0.2.23
Downloaded addr2line v0.21.0
Downloaded rustls-pemfile v1.0.4
Downloaded crc32fast v1.3.2
Downloaded clap_derive v4.4.7
Downloaded anstyle-parse v0.2.3
Downloaded libgit2-sys v0.15.2+1.6.4
Downloaded pkg-config v0.3.29
Downloaded pin-project-lite v0.2.13
Downloaded crates-index v0.19.13
Downloaded errno v0.3.8
Downloaded env_proxy v0.4.1
Downloaded clap v4.4.18
Downloaded home v0.5.9
Downloaded hex v0.4.3
Downloaded heck v0.4.1
Downloaded fastrand v2.0.1
Downloaded either v1.9.0
Downloaded dunce v1.0.4
Downloaded crossbeam-deque v0.8.5
Downloaded cargo_toml v0.19.1
Downloaded bzip2 v0.4.4
Downloaded autocfg v1.1.0
Downloaded anstyle-query v1.0.2
Downloaded bitflags v1.3.2
Downloaded anstyle v1.0.4
Downloaded clap-cargo v0.12.0
Downloaded cfg-if v1.0.0
Downloaded cargo_metadata v0.15.4
Downloaded pathdiff v0.2.1
Downloaded openssl-probe v0.1.5
Downloaded openssl-macros v0.1.1
Downloaded matchers v0.1.0
Downloaded is_ci v1.1.1
Downloaded is-terminal v0.4.12
Downloaded foreign-types-shared v0.1.1
Downloaded equivalent v1.0.1
Downloaded clap_lex v0.6.0
Downloaded cargo-platform v0.1.6
Downloaded anstream v0.6.11
Downloaded libz-sys v1.1.16
Downloaded ring v0.17.7
Compiling proc-macro2 v1.0.83
Compiling libc v0.2.155
Compiling unicode-ident v1.0.12
Compiling pkg-config v0.3.29
Compiling serde v1.0.202
Compiling cfg-if v1.0.0
Compiling vcpkg v0.2.15
Compiling once_cell v1.19.0
Compiling log v0.4.20
Compiling bitflags v2.4.2
Compiling equivalent v1.0.1
Compiling hashbrown v0.14.3
Compiling memchr v2.7.1
Compiling rustix v0.38.30
Compiling tinyvec_macros v0.1.1
Compiling serde_json v1.0.117
Compiling thiserror v1.0.56
Compiling unicode-bidi v0.3.15
Compiling crossbeam-utils v0.8.19
Compiling itoa v1.0.11
Compiling percent-encoding v2.3.1
Compiling ryu v1.0.18
Compiling regex-syntax v0.8.2
Compiling utf8parse v0.2.1
Compiling semver v1.0.21
Compiling openssl-probe v0.1.5
Compiling anstyle-query v1.0.2
Compiling adler v1.0.2
Compiling colorchoice v1.0.0
Compiling regex-syntax v0.6.29
Compiling camino v1.1.6
Compiling anstyle v1.0.4
Compiling untrusted v0.9.0
Compiling strsim v0.10.0
Compiling clap_lex v0.6.0
Compiling openssl v0.10.63
Compiling pin-project-lite v0.2.13
Compiling eyre v0.6.12
Compiling crc32fast v1.3.2
Compiling foreign-types-shared v0.1.1
Compiling overload v0.1.1
Compiling anyhow v1.0.79
Compiling lazy_static v1.4.0
Compiling rayon-core v1.12.1
Compiling heck v0.4.1
Compiling smallvec v1.13.1
Compiling winnow v0.5.40
Compiling native-tls v0.2.11
Compiling indenter v0.3.3
Compiling autocfg v1.1.0
Compiling bitflags v1.3.2
Compiling rustls v0.21.10
Compiling winnow v0.6.5
Compiling base64 v0.21.7
Compiling gimli v0.28.1
Compiling is_ci v1.1.1
Compiling home v0.5.9
Compiling either v1.9.0
Compiling byteorder v1.5.0
Compiling concolor-query v0.0.4
Compiling fixedbitset v0.4.2
Compiling hashbrown v0.12.3
Compiling rustc-demangle v0.1.23
Compiling webpki-roots v0.25.3
Compiling rustc-hash v1.1.0
Compiling unicode-segmentation v1.10.1
Compiling owo-colors v3.5.0
Compiling cargo-pgrx v0.12.9
Compiling fastrand v2.0.1
Compiling unescape v0.1.0
Compiling xml-rs v0.8.19
Compiling termcolor v1.4.1
Compiling scopeguard v1.2.0
Compiling dunce v1.0.4
Compiling pathdiff v0.2.1
Compiling tinyvec v1.6.0
Compiling foreign-types v0.3.2
Compiling nu-ansi-term v0.46.0
Compiling anstyle-parse v0.2.3
Compiling tracing-core v0.1.32
Compiling thread_local v1.1.7
Compiling sharded-slab v0.1.7
Compiling miniz_oxide v0.7.1
Compiling form_urlencoded v1.2.1
Compiling anstream v0.6.11
Compiling indexmap v1.9.3
Compiling rustls-pemfile v1.0.4
Compiling aho-corasick v1.1.2
Compiling object v0.32.2
Compiling convert_case v0.6.0
Compiling jobserver v0.1.31
Compiling rustls-native-certs v0.6.3
Compiling tracing-log v0.2.0
Compiling flate2 v1.0.28
Compiling quote v1.0.36
Compiling cc v1.0.83
Compiling crossbeam-epoch v0.9.18
Compiling indexmap v2.1.0
Compiling syn v2.0.65
Compiling crossbeam-deque v0.8.5
Compiling errno v0.3.8
Compiling getrandom v0.2.12
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error: `proc-macro` crate types currently cannot export any items other than functions tagged with `#[proc_macro]`, `#[proc_macro_derive]`, or `#[proc_macro_attribute]`
--> /home/xingxue/.cargo/registry/src/index.crates.io-7f555b6b8ccf4919/paste-impl-0.1.18/src/lib.rs:25:1
|
25 | pub fn expr(input: TokenStream) -> TokenStream {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0463]: can't find crate for `proc_macro_hack`
--> /home/xingxue/.cargo/registry/src/index.crates.io-7f555b6b8ccf4919/paste-impl-0.1.18/src/lib.rs:10:5
|
10 | use proc_macro_hack::proc_macro_hack;
| ^^^^^^^^^^^^^^^ can't find crate
For more information about this error, try `rustc --explain E0463`.
error: could not compile `paste-impl` (lib) due to 2 previous errors
warning: build failed, waiting for other jobs to finish...
Could you try trimming your dependencies to a minimal set which still reproduces the error, then do cargo check --verbose and post the output? It would show the exact arguments passed to rustc - the error seems to be somewhere here.
That's a good idea! It turns out that -C link-arg=-lpq in RUSTFLAGS is the problem. libpg is library from RPM postgresql15-libs-15.10-1. Thanks so much!
That's strange, actually, since the error is before any linking ever starts.
Yeah, it's a bit odd! That's why I didn't really expect it to be the cause of the problem.
each proc-macro crate is built as a shared library individually, which needs to be linked.
if you don't want to pass RUSTFLAGS to build scripts or procedural macros, use the --target command line option and pass the host triple to --target when running cargo build, e.g.:
$ RUSTFLAGS='-C link-arg=-lpq' cargo build --target x86_64-unknown-linux-gnu
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