cargo check not rebuilding dependency that has changed

[ehuss]

Originally posted by @robojumper in #8868 (comment)

I'm hitting a similar error in a workspace of mine, although the problem is different in that a workspace dependency is not rebuilt when running cargo check and shows errors based on outdated versions of workspace crates, even though I have successfully ran cargo run --release often in the meantime. For reference, I'm running cargo check on https://github.com/robojumper/uc-analyzer/commit/a2c5c14b4b9d05f8a05bec5f24d9edb102b1a3f4 and I'm getting

error[E0004]: non-exhaustive patterns: `&DelegateCallExpr { .. }` not covered
    --> uc_ast_lowering\src\body.rs:1291:32
     |
1291 |         let (kind, ty) = match &expr.kind {
     |                                ^^^^^^^^^^ pattern `&DelegateCallExpr { .. }` not covered
     |
     = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
     = note: the matched value is of type `&uc_ast::ExprKind`

even though the variant had been removed in https://github.com/robojumper/uc-analyzer/commit/8f11b9adfe246aa3793b7ab92040c2f6a3eef51b, 14 hours/4 commits earlier. Changes to uc_ast_lowering\src\body.rs do not make the error go away.

This is despite cargo run --release working fine. I rarely run cargo check, most often just cargo run --release, and rust-analyzer invokes cargo clippy quite often.

I can't reproduce this from a fresh checkout, but I have a zipped copy of the project + target directory that I can use to reproduce this in a different folder.

Console transcript with fingerprint trace

PS D:\uc-analyzer-cargo-repro> cargo check
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\uc_analysis-eb1e76bd7a2d4720\lib-uc_analysis
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "%USERPROFILE%\\.cargo\\registry\\src\\github.com-1ecc6299db9ec823\\bitflags-1.3.2" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libbitflags-28f01af37b1a99ce.rmeta" 13283115752.935253200s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] all paths up-to-date relative to "D:\\uc-analyzer-cargo-repro\\target\\debug\\.fingerprint\\bitflags-28f01af37b1a99ce\\dep-lib-bitflags" mtime=13283115752.899244300s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] filesystem up-to-date "%USERPROFILE%\\.cargo\\registry\\src\\github.com-1ecc6299db9ec823\\bitflags-1.3.2"
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "D:\\uc-analyzer-cargo-repro\\uc_def" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_def-4ce00a45497c9d27.rmeta" 13283115753.266326400s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_def" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libbitflags-28f01af37b1a99ce.rmeta" 13283115752.935253200s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] all paths up-to-date relative to "D:\\uc-analyzer-cargo-repro\\target\\debug\\.fingerprint\\uc_def-4ce00a45497c9d27\\dep-lib-uc_def" mtime=13283115752.954256800s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] filesystem up-to-date "D:\\uc-analyzer-cargo-repro\\uc_def"
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "%USERPROFILE%\\.cargo\\registry\\src\\github.com-1ecc6299db9ec823\\unicode-width-0.1.9" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libunicode_width-f4e6b3a70c924064.rmeta" 13283115752.973261600s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] all paths up-to-date relative to "D:\\uc-analyzer-cargo-repro\\target\\debug\\.fingerprint\\unicode-width-f4e6b3a70c924064\\dep-lib-unicode-width" mtime=13283115752.899244300s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] filesystem up-to-date "%USERPROFILE%\\.cargo\\registry\\src\\github.com-1ecc6299db9ec823\\unicode-width-0.1.9"
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "%USERPROFILE%\\.cargo\\registry\\src\\github.com-1ecc6299db9ec823\\annotate-snippets-0.9.1" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libannotate_snippets-dcc78df68929311e.rmeta" 13283115753.223318100s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "%USERPROFILE%\\.cargo\\registry\\src\\github.com-1ecc6299db9ec823\\annotate-snippets-0.9.1" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libunicode_width-f4e6b3a70c924064.rmeta" 13283115752.973261600s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] all paths up-to-date relative to "D:\\uc-analyzer-cargo-repro\\target\\debug\\.fingerprint\\annotate-snippets-dcc78df68929311e\\dep-lib-annotate-snippets" mtime=13283115752.996266000s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] filesystem up-to-date "%USERPROFILE%\\.cargo\\registry\\src\\github.com-1ecc6299db9ec823\\annotate-snippets-0.9.1"
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "D:\\uc-analyzer-cargo-repro\\uc_files" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_files-90bb204d732db203.rmeta" 13283115753.396514900s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_files" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libannotate_snippets-dcc78df68929311e.rmeta" 13283115753.223318100s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] all paths up-to-date relative to "D:\\uc-analyzer-cargo-repro\\target\\debug\\.fingerprint\\uc_files-90bb204d732db203\\dep-lib-uc_files" mtime=13283253705.595419700s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] filesystem up-to-date "D:\\uc-analyzer-cargo-repro\\uc_files"
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "D:\\uc-analyzer-cargo-repro\\uc_name" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_name-5963a663708fb94a.rmeta" 13283115753.018270600s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] all paths up-to-date relative to "D:\\uc-analyzer-cargo-repro\\target\\debug\\.fingerprint\\uc_name-5963a663708fb94a\\dep-lib-uc_name" mtime=13283115752.901244900s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] filesystem up-to-date "D:\\uc-analyzer-cargo-repro\\uc_name"
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "D:\\uc-analyzer-cargo-repro\\uc_ast" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_ast-ce7e3156c9b4e0c9.rmeta" 13283190022.552755500s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_ast" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_name-5963a663708fb94a.rmeta" 13283115753.018270600s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_ast" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_files-90bb204d732db203.rmeta" 13283115753.396514900s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_ast" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_def-4ce00a45497c9d27.rmeta" 13283115753.266326400s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] all paths up-to-date relative to "D:\\uc-analyzer-cargo-repro\\target\\debug\\.fingerprint\\uc_ast-ce7e3156c9b4e0c9\\dep-lib-uc_ast" mtime=13283253705.615761200s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] filesystem up-to-date "D:\\uc-analyzer-cargo-repro\\uc_ast"
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "D:\\uc-analyzer-cargo-repro\\uc_middle" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_middle-6156bd68ae4de83f.rmeta" 13283258684.014062100s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_middle" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_name-5963a663708fb94a.rmeta" 13283115753.018270600s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_middle" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_files-90bb204d732db203.rmeta" 13283115753.396514900s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_middle" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_def-4ce00a45497c9d27.rmeta" 13283115753.266326400s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] all paths up-to-date relative to "D:\\uc-analyzer-cargo-repro\\target\\debug\\.fingerprint\\uc_middle-6156bd68ae4de83f\\dep-lib-uc_middle" mtime=13283258683.775811000s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] filesystem up-to-date "D:\\uc-analyzer-cargo-repro\\uc_middle"
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "D:\\uc-analyzer-cargo-repro\\uc_ast_lowering" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_ast_lowering-c6bfe594fbf62aa1.rmeta" 13283206508.707530100s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_ast_lowering" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_ast-ce7e3156c9b4e0c9.rmeta" 13283190022.552755500s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_ast_lowering" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_name-5963a663708fb94a.rmeta" 13283115753.018270600s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_ast_lowering" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_files-90bb204d732db203.rmeta" 13283115753.396514900s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_ast_lowering" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_middle-6156bd68ae4de83f.rmeta" 13283258684.014062100s
[2021-12-06T10:38:59Z INFO  cargo::core::compiler::fingerprint] dependency on `uc_middle` is newer than we are 13283258684.014062100s > 13283206508.707530100s "D:\\uc-analyzer-cargo-repro\\uc_ast_lowering"
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "%USERPROFILE%\\.cargo\\registry\\src\\github.com-1ecc6299db9ec823\\once_cell-1.8.0" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libonce_cell-db71b4746cfb1f2e.rmeta" 13283115753.060280400s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] all paths up-to-date relative to "D:\\uc-analyzer-cargo-repro\\target\\debug\\.fingerprint\\once_cell-db71b4746cfb1f2e\\dep-lib-once_cell" mtime=13283115752.902244900s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] filesystem up-to-date "%USERPROFILE%\\.cargo\\registry\\src\\github.com-1ecc6299db9ec823\\once_cell-1.8.0"
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "D:\\uc-analyzer-cargo-repro\\uc_parser" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_parser-5ac8b7eaf86eb177.rmeta" 13283206261.876985600s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_parser" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_ast-ce7e3156c9b4e0c9.rmeta" 13283190022.552755500s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_parser" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_name-5963a663708fb94a.rmeta" 13283115753.018270600s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_parser" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_files-90bb204d732db203.rmeta" 13283115753.396514900s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_parser" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libonce_cell-db71b4746cfb1f2e.rmeta" 13283115753.060280400s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_parser" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libbitflags-28f01af37b1a99ce.rmeta" 13283115752.935253200s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_parser" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_def-4ce00a45497c9d27.rmeta" 13283115753.266326400s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] all paths up-to-date relative to "D:\\uc-analyzer-cargo-repro\\target\\debug\\.fingerprint\\uc_parser-5ac8b7eaf86eb177\\dep-lib-uc_parser" mtime=13283253705.644766500s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] filesystem up-to-date "D:\\uc-analyzer-cargo-repro\\uc_parser"
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "D:\\uc-analyzer-cargo-repro\\uc_analysis" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_analysis-eb1e76bd7a2d4720.rmeta" 13283206508.839941400s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_analysis" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_ast-ce7e3156c9b4e0c9.rmeta" 13283190022.552755500s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_analysis" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_name-5963a663708fb94a.rmeta" 13283115753.018270600s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_analysis" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_parser-5ac8b7eaf86eb177.rmeta" 13283206261.876985600s
[2021-12-06T10:38:59Z INFO  cargo::core::compiler::fingerprint] fingerprint error for uc_analysis v0.1.0 (D:\uc-analyzer-cargo-repro\uc_analysis)/Check { test: false }/TargetInner { ..: lib_target("uc_analysis", ["lib"], "D:\\uc-analyzer-cargo-repro\\uc_analysis\\src\\lib.rs", Edition2021) }
[2021-12-06T10:38:59Z INFO  cargo::core::compiler::fingerprint]     err: current filesystem status shows we're outdated
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\uc_ast-ce7e3156c9b4e0c9\lib-uc_ast
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\uc_def-4ce00a45497c9d27\lib-uc_def
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\bitflags-28f01af37b1a99ce\lib-bitflags
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\uc_files-90bb204d732db203\lib-uc_files
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\annotate-snippets-dcc78df68929311e\lib-annotate-snippets
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\unicode-width-f4e6b3a70c924064\lib-unicode-width
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\uc_name-5963a663708fb94a\lib-uc_name
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\uc_ast_lowering-c6bfe594fbf62aa1\lib-uc_ast_lowering
[2021-12-06T10:38:59Z INFO  cargo::core::compiler::fingerprint] fingerprint error for uc_ast_lowering v0.1.0 (D:\uc-analyzer-cargo-repro\uc_ast_lowering)/Check { test: false }/TargetInner { ..: lib_target("uc_ast_lowering", ["lib"], "D:\\uc-analyzer-cargo-repro\\uc_ast_lowering\\src\\lib.rs", Edition2021) }
[2021-12-06T10:38:59Z INFO  cargo::core::compiler::fingerprint]     err: current filesystem status shows we're outdated
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\uc_middle-6156bd68ae4de83f\lib-uc_middle
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\uc_parser-5ac8b7eaf86eb177\lib-uc_parser
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\once_cell-db71b4746cfb1f2e\lib-once_cell
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] fingerprint at: D:\uc-analyzer-cargo-repro\target\debug\.fingerprint\uc_analyzer-a1c8b642603088d1\bin-uc_analyzer
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max output mtime for "D:\\uc-analyzer-cargo-repro\\uc_analyzer" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_analyzer-a1c8b642603088d1.rmeta" 13283206508.950518200s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_analyzer" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_ast-ce7e3156c9b4e0c9.rmeta" 13283190022.552755500s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_analyzer" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_name-5963a663708fb94a.rmeta" 13283115753.018270600s
[2021-12-06T10:38:59Z DEBUG cargo::core::compiler::fingerprint] max dep mtime for "D:\\uc-analyzer-cargo-repro\\uc_analyzer" is "D:\\uc-analyzer-cargo-repro\\target\\debug\\deps\\libuc_parser-5ac8b7eaf86eb177.rmeta" 13283206261.876985600s
[2021-12-06T10:38:59Z INFO  cargo::core::compiler::fingerprint] fingerprint error for uc_analyzer v0.1.0 (D:\uc-analyzer-cargo-repro\uc_analyzer)/Check { test: false }/TargetInner { name: "uc_analyzer", doc: true, ..: with_path("D:\\uc-analyzer-cargo-repro\\uc_analyzer\\src\\main.rs", Edition2021) }
[2021-12-06T10:38:59Z INFO  cargo::core::compiler::fingerprint]     err: current filesystem status shows we're outdated
    Checking uc_ast_lowering v0.1.0 (D:\uc-analyzer-cargo-repro\uc_ast_lowering)
error[E0004]: non-exhaustive patterns: `&DelegateCallExpr { .. }` not covered
    --> uc_ast_lowering\src\body.rs:1291:32
     |
1291 |         let (kind, ty) = match &expr.kind {
     |                                ^^^^^^^^^^ pattern `&DelegateCallExpr { .. }` not covered
     |
     = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
     = note: the matched value is of type `&uc_ast::ExprKind`

warning: unused variable: `ops`
   --> uc_ast_lowering\src\lib.rs:928:9
    |
928 |         ops: &HashMap<DefId, &'hir uc_ast::FuncDef>,
    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ops`
    |
    = note: `#[warn(unused_variables)]` on by default

warning: unused variable: `name`
   --> uc_ast_lowering\src\body.rs:339:44
    |
339 |             uc_ast::StatementKind::Label { name } => {
    |                                            ^^^^ help: try ignoring the field: `name: _`

warning: unused variable: `receiver`
   --> uc_ast_lowering\src\body.rs:624:38
    |
624 |             NativeIteratorKind::Func(receiver, func_id) => {
    |                                      ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_receiver`

warning: unused variable: `truncation`
    --> uc_ast_lowering\src\body.rs:1742:67
     |
1742 |                     ty::ConversionClassification::Allowed { auto, truncation } => {
     |                                                                   ^^^^^^^^^^ help: try ignoring the field: `truncation: _`

For more information about this error, try `rustc --explain E0004`.
warning: `uc_ast_lowering` (lib) generated 4 warnings
error: could not compile `uc_ast_lowering` due to previous error; 4 warnings emitted

[ehuss]

@robojumper Can you share the ZIP file you have?

Can you reproduce it if you delete the target/debug/incremental directory?

[robojumper]

Deleting the target/debug/incremental directory has no effect on this error.

[robojumper]

I should've thought to add: This is on cargo 1.58.0-nightly (294967c53 2021-11-29), and I'm quite certain this has happened at least once before, when working on this project a few days earlier with the same nightly. Back then I ran cargo clean, which expectedly fixed it. That's why I took the zip snapshot and decided to report the issue.