> ## Documentation Index > Fetch the complete documentation index at: https://docs.sifr.sh/llms.txt > Use this file to discover all available pages before exploring further. # Diagnostic Codes > Complete list of active and reserved Sifr diagnostic codes with links to per-code reference pages. Sifr diagnostic codes use `SIFR--dddd`, with local numbers scoped to each family. Some interop families use hyphenated names such as `RUST-CONFIG`. Tooling metadata defaults: `tool_actions` is empty, `fix_all_eligible` is `false`, and machine-applicable suggestion availability is derived from emitted suggestions rather than authored registry metadata. ## Families | Family | Reserved base | Summary | | -------------- | ------------------------ | --------------------------------------------------------------------------------------- | | `PARSE` | `SIFR-PARSE-0000` | Parsing and source syntax diagnostics. | | `NAME` | `SIFR-NAME-0000` | Name binding and resolution diagnostics. | | `IMPORT` | `SIFR-IMPORT-0000` | Module import and path resolution diagnostics. | | `TYPE` | `SIFR-TYPE-0000` | Static type compatibility and inference diagnostics. | | `META` | `SIFR-META-0000` | Deterministic package metaprogramming and const-specialization diagnostics. | | `ASYNC` | `SIFR-ASYNC-0000` | Async effect, awaitability, and blocking-offload diagnostics. | | `PYENV` | `SIFR-PYENV-0000` | Embedded CPython environment selection, probing, and ABI diagnostics. | | `PYIMP` | `SIFR-PYIMP-0000` | Embedded Python import and module-loading diagnostics. | | `PYCALL` | `SIFR-PYCALL-0000` | Embedded Python callable, attribute, item, and coroutine diagnostics. | | `PYCONV` | `SIFR-PYCONV-0000` | Sifr/Python primitive and structured conversion diagnostics. | | `PYRES` | `SIFR-PYRES-0000` | Embedded Python resource cleanup and leak diagnostics. | | `PYASYNC` | `SIFR-PYASYNC-0000` | Embedded Python loop ownership, awaitable, cancellation, and async-cleanup diagnostics. | | `PYCTX` | `SIFR-PYCTX-0000` | Embedded Python context entry, exit, suppression, and cause-mapping diagnostics. | | `PYZC` | `SIFR-PYZC-0000` | Embedded Python zero-copy buffer, Arrow, DLPack, and array-interface diagnostics. | | `PYCB` | `SIFR-PYCB-0000` | Python-to-Sifr callback lifetime, dispatch, and closure diagnostics. | | `PYTRUST` | `SIFR-PYTRUST-0000` | Embedded Python import and native-extension trust diagnostics. | | `RUST-CONFIG` | `SIFR-RUST-CONFIG-0000` | Rust interop declaration and manifest-configuration diagnostics. | | `RUST-RESOLVE` | `SIFR-RUST-RESOLVE-0000` | Rust interop target and Cargo item resolution diagnostics. | | `RUST-TRUST` | `SIFR-RUST-TRUST-0000` | Rust interop trust-policy diagnostics. | | `RUST-TYPE` | `SIFR-RUST-TYPE-0000` | Rust bridge type-contract diagnostics. | | `RUST-HANDLE` | `SIFR-RUST-HANDLE-0000` | Rust opaque-handle and resource-lifetime diagnostics. | | `RUST-ASYNC` | `SIFR-RUST-ASYNC-0000` | Rust async, blocking, and runtime-affinity diagnostics. | | `RUST-ZC` | `SIFR-RUST-ZC-0000` | Rust zero-copy and borrowed-view diagnostics. | | `RUST-CB` | `SIFR-RUST-CB-0000` | Rust callback lifetime, threading, and backpressure diagnostics. | | `RUST-PANIC` | `SIFR-RUST-PANIC-0000` | Rust panic strategy, mapping, and poisoned-handle diagnostics. | | `RUST-CARGO` | `SIFR-RUST-CARGO-0000` | Rust interop Cargo metadata, lockfile, and profile diagnostics. | | `DECIMAL` | `SIFR-DECIMAL-0000` | Decimal literal and fixed-point arithmetic diagnostics. | | `INT` | `SIFR-INT-0000` | Exact and fixed-width integer model diagnostics. | | `IO` | `SIFR-IO-0000` | File and stream text/binary boundary diagnostics. | | `ENCODING` | `SIFR-ENCODING-0000` | Text encoding and error-handler diagnostics. | | `CALL` | `SIFR-CALL-0000` | Function, method, constructor, and overload call diagnostics. | | `OWN` | `SIFR-OWN-0000` | Ownership, borrow, move, and lifetime diagnostics. | | `FLOW` | `SIFR-FLOW-0000` | Control-flow, reachability, and narrowing diagnostics. | | `FMT` | `SIFR-FMT-0000` | Source formatting diagnostics. | | `LINT` | `SIFR-LINT-0000` | Suppressible policy-rule diagnostics. | | `MATCH` | `SIFR-MATCH-0000` | Pattern matching and exhaustiveness diagnostics. | | `PROTO` | `SIFR-PROTO-0000` | Protocol and structural conformance diagnostics. | | `CLASS` | `SIFR-CLASS-0000` | Class declaration, constructor, field, and method diagnostics. | | `RESULT` | `SIFR-RESULT-0000` | Result, Option, and checked error-flow diagnostics. | | `STDLIB` | `SIFR-STDLIB-0000` | Standard-library surface and intrinsic rule diagnostics. | | `WORKSPACE` | `SIFR-WORKSPACE-0000` | Workspace, package, manifest, and project discovery diagnostics. | | `PACKAGE` | `SIFR-PACKAGE-0000` | Cargo-backed Sifr package coordination diagnostics. | | `CODEGEN` | `SIFR-CODEGEN-0000` | Rust lowering and backend code-generation diagnostics. | | `BUILD` | `SIFR-BUILD-0000` | Build orchestration, rustc, linker, and artifact diagnostics. | | `INTERNAL` | `SIFR-INTERNAL-0000` | Compiler invariant and internal failure diagnostics. | ## Active Codes | Code | Severity | Summary | | ---------------------------------------------------------- | -------- | ------------------------------------------------------------------------------------------------------------------------ | | [`SIFR-PARSE-0002`](/errors/SIFR-PARSE-0002) | Error | Expected token or generic parser recovery failure. | | [`SIFR-PARSE-0003`](/errors/SIFR-PARSE-0003) | Error | Lexical or interpolated string parser failure. | | [`SIFR-PARSE-0004`](/errors/SIFR-PARSE-0004) | Error | Indentation or same-line statement layout parser failure. | | [`SIFR-PARSE-0005`](/errors/SIFR-PARSE-0005) | Error | Invalid assignment, delete, starred, or named-expression target syntax. | | [`SIFR-PARSE-0006`](/errors/SIFR-PARSE-0006) | Error | Invalid call argument order or unpacking syntax. | | [`SIFR-PARSE-0007`](/errors/SIFR-PARSE-0007) | Error | Empty or malformed declaration list syntax. | | [`SIFR-PARSE-0008`](/errors/SIFR-PARSE-0008) | Error | Invalid match-pattern syntax. | | [`SIFR-PARSE-0009`](/errors/SIFR-PARSE-0009) | Error | Unsupported parser syntax or interactive-only syntax. | | [`SIFR-NAME-0001`](/errors/SIFR-NAME-0001) | Error | Undefined variable. | | [`SIFR-NAME-0002`](/errors/SIFR-NAME-0002) | Error | Undefined function or callable. | | [`SIFR-NAME-0003`](/errors/SIFR-NAME-0003) | Error | Unknown type or generic type name. | | [`SIFR-NAME-0004`](/errors/SIFR-NAME-0004) | Error | Missing module or class member. | | [`SIFR-NAME-0005`](/errors/SIFR-NAME-0005) | Error | Duplicate function definition in a module. | | [`SIFR-NAME-0006`](/errors/SIFR-NAME-0006) | Error | Variable declaration lacks a required initializer. | | [`SIFR-IMPORT-0001`](/errors/SIFR-IMPORT-0001) | Error | Forbidden private sysroot declaration import. | | [`SIFR-IMPORT-0002`](/errors/SIFR-IMPORT-0002) | Error | Unknown source module import target. | | [`SIFR-IMPORT-0003`](/errors/SIFR-IMPORT-0003) | Error | Unsupported import statement form. | | [`SIFR-IMPORT-0004`](/errors/SIFR-IMPORT-0004) | Error | Private module member import. | | [`SIFR-IMPORT-0005`](/errors/SIFR-IMPORT-0005) | Error | Ambiguous source module import target. | | [`SIFR-IMPORT-0006`](/errors/SIFR-IMPORT-0006) | Error | Source module namespace and file import collision. | | [`SIFR-IMPORT-0007`](/errors/SIFR-IMPORT-0007) | Error | Circular source module import graph. | | [`SIFR-IMPORT-0008`](/errors/SIFR-IMPORT-0008) | Error | Bare CPython-style stdlib import attempt. | | [`SIFR-IMPORT-0009`](/errors/SIFR-IMPORT-0009) | Error | Unsupported legacy Sifr stdlib module import. | | [`SIFR-TYPE-0002`](/errors/SIFR-TYPE-0002) | Error | Expected and actual types are incompatible. | | [`SIFR-TYPE-0003`](/errors/SIFR-TYPE-0003) | Error | If-expression or conditional branches have incompatible types. | | [`SIFR-TYPE-0004`](/errors/SIFR-TYPE-0004) | Error | A required type annotation is missing. | | [`SIFR-TYPE-0005`](/errors/SIFR-TYPE-0005) | Error | Unsupported operator or operand types. | | [`SIFR-TYPE-0006`](/errors/SIFR-TYPE-0006) | Error | Int and bigint are mixed without an explicit conversion. | | [`SIFR-TYPE-0007`](/errors/SIFR-TYPE-0007) | Error | Invalid type annotation shape. | | [`SIFR-TYPE-0008`](/errors/SIFR-TYPE-0008) | Error | Container literal elements, keys, or values have conflicting types. | | [`SIFR-TYPE-0009`](/errors/SIFR-TYPE-0009) | Error | Tuple or list unpacking shape mismatch. | | [`SIFR-TYPE-0010`](/errors/SIFR-TYPE-0010) | Error | TypeVar constraints are not satisfied by the inferred concrete type. | | [`SIFR-TYPE-0011`](/errors/SIFR-TYPE-0011) | Error | Unsupported default argument expression. | | [`SIFR-TYPE-0012`](/errors/SIFR-TYPE-0012) | Error | Unsupported expression form. | | [`SIFR-TYPE-0901`](/errors/SIFR-TYPE-0901) | Warning | Integer arithmetic may overflow at runtime. | | [`SIFR-TYPE-0902`](/errors/SIFR-TYPE-0902) | Note | Reveal the inferred static type of an expression. | | [`SIFR-ASYNC-0001`](/errors/SIFR-ASYNC-0001) | Error | Async function body has no real suspension effect. | | [`SIFR-ASYNC-0002`](/errors/SIFR-ASYNC-0002) | Error | Awaited same-task coroutine has no real suspension effect. | | [`SIFR-ASYNC-0003`](/errors/SIFR-ASYNC-0003) | Error | Blocking I/O function called directly from async context. | | [`SIFR-ASYNC-0004`](/errors/SIFR-ASYNC-0004) | Error | CPU-heavy function called directly from async context. | | [`SIFR-ASYNC-0005`](/errors/SIFR-ASYNC-0005) | Error | Blocking offload target is not classified as blocking I/O or CPU-heavy work. | | [`SIFR-ASYNC-0006`](/errors/SIFR-ASYNC-0006) | Error | Synchronous workload annotation applied to async function. | | [`SIFR-ASYNC-0007`](/errors/SIFR-ASYNC-0007) | Error | Shell execution function called directly from async context. | | [`SIFR-DECIMAL-0001`](/errors/SIFR-DECIMAL-0001) | Error | Invalid Decimal exact literal. | | [`SIFR-DECIMAL-0002`](/errors/SIFR-DECIMAL-0002) | Error | Invalid BigDecimal exact literal. | | [`SIFR-DECIMAL-0003`](/errors/SIFR-DECIMAL-0003) | Error | Float mixed with a decimal numeric type. | | [`SIFR-DECIMAL-0004`](/errors/SIFR-DECIMAL-0004) | Error | Decimal and BigDecimal mixed in one operation. | | [`SIFR-DECIMAL-0005`](/errors/SIFR-DECIMAL-0005) | Error | Decimal float construction or conversion is forbidden. | | [`SIFR-DECIMAL-0006`](/errors/SIFR-DECIMAL-0006) | Error | BigDecimal float construction or conversion is forbidden. | | [`SIFR-DECIMAL-0007`](/errors/SIFR-DECIMAL-0007) | Error | Decimal scale argument is invalid. | | [`SIFR-DECIMAL-0008`](/errors/SIFR-DECIMAL-0008) | Error | BigDecimal scale or context argument is invalid. | | [`SIFR-INT-0001`](/errors/SIFR-INT-0001) | Error | Fixed-width integer literal or const expression is out of range. | | [`SIFR-INT-0003`](/errors/SIFR-INT-0003) | Error | Reserved integer width name used before support lands. | | [`SIFR-INT-0004`](/errors/SIFR-INT-0004) | Error | Compile-time integer evaluation budget exceeded. | | [`SIFR-INT-0005`](/errors/SIFR-INT-0005) | Error | Integer division, modulo, or exponentiation requires handling a typed failure. | | [`SIFR-INT-0006`](/errors/SIFR-INT-0006) | Error | Exact integer to float conversion requires handling precision loss. | | [`SIFR-INT-0007`](/errors/SIFR-INT-0007) | Error | Bool and integer comparison requires explicit conversion. | | [`SIFR-INT-0009`](/errors/SIFR-INT-0009) | Error | JSON or web-safe integer serialization boundary is missing or unsafe. | | [`SIFR-INT-0011`](/errors/SIFR-INT-0011) | Warning | Temporary bigint transition alias used. | | [`SIFR-META-0001`](/errors/SIFR-META-0001) | Error | Package const specialization reported a fatal issue. | | [`SIFR-META-0002`](/errors/SIFR-META-0002) | Warning | Package const specialization reported a hard warning. | | [`SIFR-META-0003`](/errors/SIFR-META-0003) | Error | Package const-specialization issue declaration is malformed. | | [`SIFR-CALL-0001`](/errors/SIFR-CALL-0001) | Error | Wrong positional argument count. | | [`SIFR-CALL-0002`](/errors/SIFR-CALL-0002) | Error | Unexpected keyword argument. | | [`SIFR-CALL-0003`](/errors/SIFR-CALL-0003) | Error | Duplicate argument from positional and keyword overlap. | | [`SIFR-CALL-0004`](/errors/SIFR-CALL-0004) | Error | Missing required argument. | | [`SIFR-CALL-0005`](/errors/SIFR-CALL-0005) | Error | Callable arity failure or expression is not callable. | | [`SIFR-OWN-0001`](/errors/SIFR-OWN-0001) | Error | Use after move. | | [`SIFR-OWN-0002`](/errors/SIFR-OWN-0002) | Error | Conflicting borrow. | | [`SIFR-OWN-0003`](/errors/SIFR-OWN-0003) | Error | Borrowed parameter escapes by return or store. | | [`SIFR-OWN-0004`](/errors/SIFR-OWN-0004) | Error | Moved value is reused across loop iterations. | | [`SIFR-OWN-0005`](/errors/SIFR-OWN-0005) | Error | Immutable parameter is mutated. | | [`SIFR-OWN-0006`](/errors/SIFR-OWN-0006) | Error | Immutable parameter is reassigned. | | [`SIFR-OWN-0007`](/errors/SIFR-OWN-0007) | Error | Immutable bytes value is mutated. | | [`SIFR-OWN-0008`](/errors/SIFR-OWN-0008) | Error | Immutable bytes value is mutated by augmented assignment. | | [`SIFR-OWN-0009`](/errors/SIFR-OWN-0009) | Error | Mutable borrow remains live across an await point. | | [`SIFR-OWN-0010`](/errors/SIFR-OWN-0010) | Error | Non-sendable value crosses a spawned task boundary. | | [`SIFR-OWN-0011`](/errors/SIFR-OWN-0011) | Error | Non-sendable value is sent through a channel. | | [`SIFR-OWN-0012`](/errors/SIFR-OWN-0012) | Error | Non-share-safe value is wrapped in sync.Shared. | | [`SIFR-OWN-0013`](/errors/SIFR-OWN-0013) | Error | Non-IPC-serializable value is used as a typed IPC payload. | | [`SIFR-OWN-0014`](/errors/SIFR-OWN-0014) | Error | Unsupported mutable receiver place. | | [`SIFR-FLOW-0001`](/errors/SIFR-FLOW-0001) | Error | Break outside a loop. | | [`SIFR-FLOW-0002`](/errors/SIFR-FLOW-0002) | Error | Continue outside a loop. | | [`SIFR-FLOW-0003`](/errors/SIFR-FLOW-0003) | Error | Invalid nonlocal or nested-function flow. | | [`SIFR-FLOW-0004`](/errors/SIFR-FLOW-0004) | Error | Function may finish without returning a required value. | | [`SIFR-FLOW-0005`](/errors/SIFR-FLOW-0005) | Error | Control-flow condition has an unsupported type. | | [`SIFR-FLOW-0006`](/errors/SIFR-FLOW-0006) | Error | Statement form is unsupported by HIR lowering. | | [`SIFR-FLOW-0007`](/errors/SIFR-FLOW-0007) | Error | Assignment target form is unsupported by HIR lowering. | | [`SIFR-FLOW-0008`](/errors/SIFR-FLOW-0008) | Error | For-loop iteration form or source is invalid. | | [`SIFR-FLOW-0901`](/errors/SIFR-FLOW-0901) | Warning | Unreachable statement ignored during lowering. | | [`SIFR-MATCH-0001`](/errors/SIFR-MATCH-0001) | Error | Non-exhaustive match. | | [`SIFR-MATCH-0002`](/errors/SIFR-MATCH-0002) | Error | Match guard must be bool. | | [`SIFR-MATCH-0003`](/errors/SIFR-MATCH-0003) | Error | Invalid class pattern field. | | [`SIFR-MATCH-0004`](/errors/SIFR-MATCH-0004) | Error | Invalid or unsupported match pattern form. | | [`SIFR-PROTO-0001`](/errors/SIFR-PROTO-0001) | Error | Protocol bound or conformance failure. | | [`SIFR-PROTO-0002`](/errors/SIFR-PROTO-0002) | Error | Invalid iterator or reversible protocol signature. | | [`SIFR-PROTO-0003`](/errors/SIFR-PROTO-0003) | Error | Context-manager protocol is missing. | | [`SIFR-PROTO-0004`](/errors/SIFR-PROTO-0004) | Error | Hashable or comparable protocol is required. | | [`SIFR-PROTO-0005`](/errors/SIFR-PROTO-0005) | Error | Protocol receiver convention mismatch. | | [`SIFR-PROTO-0006`](/errors/SIFR-PROTO-0006) | Error | Fixed Rust trait receiver mutation is unsupported. | | [`SIFR-CLASS-0001`](/errors/SIFR-CLASS-0001) | Error | Class fields require an initializer or super initializer. | | [`SIFR-CLASS-0002`](/errors/SIFR-CLASS-0002) | Error | Required field declared after a defaulted field. | | [`SIFR-CLASS-0003`](/errors/SIFR-CLASS-0003) | Error | Duplicate enum or class value, or invalid variant. | | [`SIFR-CLASS-0004`](/errors/SIFR-CLASS-0004) | Error | Missing class field. | | [`SIFR-CLASS-0005`](/errors/SIFR-CLASS-0005) | Error | Invalid class base. | | [`SIFR-CLASS-0006`](/errors/SIFR-CLASS-0006) | Error | Unsupported class declaration. | | [`SIFR-RESULT-0001`](/errors/SIFR-RESULT-0001) | Error | Unused Result value. | | [`SIFR-RESULT-0002`](/errors/SIFR-RESULT-0002) | Error | Invalid Result error type. | | [`SIFR-RESULT-0003`](/errors/SIFR-RESULT-0003) | Error | Invalid raise expression. | | [`SIFR-RESULT-0004`](/errors/SIFR-RESULT-0004) | Error | Except arm references an unknown error type. | | [`SIFR-RESULT-0005`](/errors/SIFR-RESULT-0005) | Error | Try body error types are not fully covered by except arms. | | [`SIFR-RESULT-0006`](/errors/SIFR-RESULT-0006) | Error | Except arm type expression has an unsupported form. | | [`SIFR-STDLIB-0001`](/errors/SIFR-STDLIB-0001) | Error | Unsupported standard-library constructor, method, or surface. | | [`SIFR-STDLIB-0003`](/errors/SIFR-STDLIB-0003) | Error | Embedded standard-library bootstrap failure. | | [`SIFR-STDLIB-0004`](/errors/SIFR-STDLIB-0004) | Error | Standard-library cache build or reuse failure. | | [`SIFR-IO-0801`](/errors/SIFR-IO-0801) | Error | Text-mode open requires an explicit encoding. | | [`SIFR-IO-0802`](/errors/SIFR-IO-0802) | Error | Open mode must be statically known. | | [`SIFR-ENCODING-0803`](/errors/SIFR-ENCODING-0803) | Error | Encoding error handler must be statically known. | | [`SIFR-WORKSPACE-0001`](/errors/SIFR-WORKSPACE-0001) | Error | Malformed workspace manifest. | | [`SIFR-WORKSPACE-0002`](/errors/SIFR-WORKSPACE-0002) | Error | Workspace source root escapes the workspace root. | | [`SIFR-WORKSPACE-0003`](/errors/SIFR-WORKSPACE-0003) | Error | Workspace source root is not a directory. | | [`SIFR-WORKSPACE-0004`](/errors/SIFR-WORKSPACE-0004) | Error | Workspace source root entry has an invalid shape or path. | | [`SIFR-WORKSPACE-0101`](/errors/SIFR-WORKSPACE-0101) | Error | Legacy workspace import target could not be resolved; source imports use [`SIFR-IMPORT-0002`](/errors/SIFR-IMPORT-0002). | | [`SIFR-WORKSPACE-0102`](/errors/SIFR-WORKSPACE-0102) | Error | Legacy workspace import target is ambiguous; source imports use [`SIFR-IMPORT-0005`](/errors/SIFR-IMPORT-0005). | | [`SIFR-WORKSPACE-0103`](/errors/SIFR-WORKSPACE-0103) | Error | Legacy workspace namespace package collision; source imports use [`SIFR-IMPORT-0006`](/errors/SIFR-IMPORT-0006). | | [`SIFR-WORKSPACE-0104`](/errors/SIFR-WORKSPACE-0104) | Error | Legacy workspace import graph cycle; source imports use [`SIFR-IMPORT-0007`](/errors/SIFR-IMPORT-0007). | | [`SIFR-BUILD-0002`](/errors/SIFR-BUILD-0002) | Error | Build file materialization failed. | | [`SIFR-BUILD-0003`](/errors/SIFR-BUILD-0003) | Error | Temporary build workspace creation failed. | | [`SIFR-BUILD-0004`](/errors/SIFR-BUILD-0004) | Error | Cargo manifest generation failed. | | [`SIFR-BUILD-0005`](/errors/SIFR-BUILD-0005) | Error | Rustc or Cargo execution failed. | | [`SIFR-BUILD-0006`](/errors/SIFR-BUILD-0006) | Error | Expected build artifact was not produced. | | [`SIFR-BUILD-0901`](/errors/SIFR-BUILD-0901) | Error | Standalone install receipt is missing or outside the self-update install rules. | | [`SIFR-INTERNAL-0001`](/errors/SIFR-INTERNAL-0001) | Error | Unclassified compiler panic after a panic boundary. | | [`SIFR-INTERNAL-0002`](/errors/SIFR-INTERNAL-0002) | Note | Structured recovery-cap omission summary. | | [`SIFR-FMT-0001`](/errors/SIFR-FMT-0001) | Error | Source formatting drift detected by sifr fmt --check. | | [`SIFR-LINT-0001`](/errors/SIFR-LINT-0001) | Warning | Suppression references an unknown policy rule id. | | [`SIFR-LINT-0002`](/errors/SIFR-LINT-0002) | Warning | Suppression did not suppress any diagnostic. | | [`SIFR-LINT-0003`](/errors/SIFR-LINT-0003) | Warning | Suppression must list explicit Sifr policy rule ids. | | [`SIFR-LINT-0004`](/errors/SIFR-LINT-0004) | Warning | Line ends with trailing horizontal whitespace. | | [`SIFR-LINT-0005`](/errors/SIFR-LINT-0005) | Warning | Comment contains a tracked TODO or FIXME marker. | | [`SIFR-LINT-0006`](/errors/SIFR-LINT-0006) | Warning | Call passes a boolean literal positionally. | | [`SIFR-LINT-0007`](/errors/SIFR-LINT-0007) | Warning | Function has more parameters than the policy limit. | | [`SIFR-LINT-0008`](/errors/SIFR-LINT-0008) | Warning | Import duplicates a module/name pair already imported in the same source file. | | [`SIFR-PACKAGE-0001`](/errors/SIFR-PACKAGE-0001) | Error | Missing or invalid Cargo Sifr discovery metadata. | | [`SIFR-PACKAGE-0002`](/errors/SIFR-PACKAGE-0002) | Error | Missing or invalid sifr.toml package manifest. | | [`SIFR-PACKAGE-0003`](/errors/SIFR-PACKAGE-0003) | Error | Unsupported Sifr compiler metadata appears in Cargo metadata. | | [`SIFR-PACKAGE-0103`](/errors/SIFR-PACKAGE-0103) | Error | Cargo metadata parsing or normalization failed. | | [`SIFR-PACKAGE-0101`](/errors/SIFR-PACKAGE-0101) | Error | Cargo command invocation failed; Sifr reports the redacted Cargo excerpt and safe Sifr-owned recovery context. | | [`SIFR-PACKAGE-0102`](/errors/SIFR-PACKAGE-0102) | Error | A selected Cargo package is Rust-only. | | [`SIFR-PACKAGE-0104`](/errors/SIFR-PACKAGE-0104) | Error | Package source is unavailable in offline or frozen mode. | | [`SIFR-PACKAGE-0106`](/errors/SIFR-PACKAGE-0106) | Error | Rust-only package depends directly on a Sifr source package. | | [`SIFR-PACKAGE-0201`](/errors/SIFR-PACKAGE-0201) | Error | Direct package import root resolves to multiple package instances. | | [`SIFR-PACKAGE-0202`](/errors/SIFR-PACKAGE-0202) | Error | Package imports a module outside its direct dependency scope. | | [`SIFR-PACKAGE-0203`](/errors/SIFR-PACKAGE-0203) | Error | Package imports a private module from another package. | | [`SIFR-PACKAGE-0204`](/errors/SIFR-PACKAGE-0204) | Error | Type identity crosses resolved package instances. | | [`SIFR-PACKAGE-0301`](/errors/SIFR-PACKAGE-0301) | Error | Backend Rust crate is not allowed by the Sifr trust policy. | | [`SIFR-PACKAGE-0305`](/errors/SIFR-PACKAGE-0305) | Error | Trust policy names a backend crate that is not a direct dependency. | | [`SIFR-PACKAGE-0401`](/errors/SIFR-PACKAGE-0401) | Error | Cargo package archive is missing required Sifr source. | | [`SIFR-PACKAGE-0402`](/errors/SIFR-PACKAGE-0402) | Error | Package publish or archive validation failed. | | [`SIFR-PACKAGE-0403`](/errors/SIFR-PACKAGE-0403) | Error | Cargo include/exclude rules omit required Sifr files. | | [`SIFR-PACKAGE-0404`](/errors/SIFR-PACKAGE-0404) | Error | Cargo package archive contains an unsafe path. | | [`SIFR-PACKAGE-0501`](/errors/SIFR-PACKAGE-0501) | Error | Pure Sifr Rust marker contains implementation. | | [`SIFR-PACKAGE-0601`](/errors/SIFR-PACKAGE-0601) | Error | Package selector is ambiguous or invalid. | | [`SIFR-PACKAGE-0602`](/errors/SIFR-PACKAGE-0602) | Error | Workspace selection contains duplicate import roots. | | [`SIFR-PACKAGE-0603`](/errors/SIFR-PACKAGE-0603) | Error | Changed file could not be mapped to a package. | | [`SIFR-PACKAGE-0604`](/errors/SIFR-PACKAGE-0604) | Error | Outdated query cannot inspect this Cargo source. | | [`SIFR-PACKAGE-0605`](/errors/SIFR-PACKAGE-0605) | Error | Runnable package target or script selection is missing or ambiguous. | | [`SIFR-PACKAGE-0606`](/errors/SIFR-PACKAGE-0606) | Error | Discovered app target name is invalid. | | [`SIFR-PACKAGE-0607`](/errors/SIFR-PACKAGE-0607) | Error | Selected workspace members use the same Sifr package name. | | [`SIFR-PACKAGE-0701`](/errors/SIFR-PACKAGE-0701) | Error | Production sifr.toml uses manifest-level exports. | | [`SIFR-PACKAGE-0703`](/errors/SIFR-PACKAGE-0703) | Error | Sifr-managed Cargo projection manifest pointer drift. | | [`SIFR-PACKAGE-0704`](/errors/SIFR-PACKAGE-0704) | Error | Sifr-managed Cargo projection include rules omit required package files. | | [`SIFR-PACKAGE-0709`](/errors/SIFR-PACKAGE-0709) | Error | Pure package marker is missing from Sifr-managed projection. | | [`SIFR-PACKAGE-0710`](/errors/SIFR-PACKAGE-0710) | Error | Explicit Sifr file target is outside the package source root. | | [`SIFR-PACKAGE-0711`](/errors/SIFR-PACKAGE-0711) | Error | Production sifr.toml uses manifest binary target tables. | | [`SIFR-PACKAGE-0713`](/errors/SIFR-PACKAGE-0713) | Error | Public API symbol is exported more than once. | | [`SIFR-PACKAGE-0714`](/errors/SIFR-PACKAGE-0714) | Error | Package script expansion attempted to invoke another script. | | [`SIFR-PYENV-0001`](/errors/SIFR-PYENV-0001) | Error | Python environment configuration is malformed. | | [`SIFR-PYENV-0002`](/errors/SIFR-PYENV-0002) | Error | Package graph selects more than one Python virtual environment. | | [`SIFR-PYENV-0003`](/errors/SIFR-PYENV-0003) | Error | A package graph requires Python but no root environment is selected. | | [`SIFR-PYENV-0004`](/errors/SIFR-PYENV-0004) | Error | Selected Python interpreter probe failed or returned invalid JSON. | | [`SIFR-PYENV-0005`](/errors/SIFR-PYENV-0005) | Error | Selected Python interpreter is not supported CPython. | | [`SIFR-PYENV-0006`](/errors/SIFR-PYENV-0006) | Error | Selected interpreter does not belong to the configured virtual environment. | | [`SIFR-PYENV-0007`](/errors/SIFR-PYENV-0007) | Error | Selected Python environment has no site-packages path. | | [`SIFR-PYENV-0008`](/errors/SIFR-PYENV-0008) | Error | Declared Python import root is missing from the selected environment. | | [`SIFR-PYENV-0009`](/errors/SIFR-PYENV-0009) | Error | Trusted native Python import root failed to load. | | [`SIFR-PYENV-0010`](/errors/SIFR-PYENV-0010) | Error | Free-threaded CPython is not supported for embedded interop. | | [`SIFR-PYENV-0011`](/errors/SIFR-PYENV-0011) | Error | Configured Python project or lockfile is missing or stale. | | [`SIFR-PYTRUST-0001`](/errors/SIFR-PYTRUST-0001) | Error | Dependency package declares a wildcard Python trust root. | | [`SIFR-PYTRUST-0003`](/errors/SIFR-PYTRUST-0003) | Error | Native Python import root is trusted but not required. | | [`SIFR-PYTRUST-0004`](/errors/SIFR-PYTRUST-0004) | Error | Dynamic Python import requires an explicit trust annotation. | | [`SIFR-PYTRUST-0005`](/errors/SIFR-PYTRUST-0005) | Error | Required Python import root is not authorized by the root application. | | [`SIFR-PYIMP-0001`](/errors/SIFR-PYIMP-0001) | Error | A declaration-first Python target path is invalid or unresolved. | | [`SIFR-PYIMP-0002`](/errors/SIFR-PYIMP-0002) | Error | A package-local Python bridge source or import inventory is invalid. | | [`SIFR-PYIMP-0003`](/errors/SIFR-PYIMP-0003) | Error | The reserved embedded Python bridge namespace was already populated. | | [`SIFR-PYCALL-0001`](/errors/SIFR-PYCALL-0001) | Error | A Python declaration or call shape is unsupported or incompatible. | | [`SIFR-PYCONV-0001`](/errors/SIFR-PYCONV-0001) | Error | A Sifr type has no active declaration-first Python conversion. | | [`SIFR-PYRES-0002`](/errors/SIFR-PYRES-0002) | Error | A Python resource declaration uses an unsupported ownership or target shape. | | [`SIFR-PYCTX-0001`](/errors/SIFR-PYCTX-0001) | Error | A Python context-manager entry, exit, or entered-value declaration is invalid. | | [`SIFR-PYCB-0001`](/errors/SIFR-PYCB-0001) | Error | A Python callback lifetime, dispatch, concurrency, or owner declaration is invalid. | | [`SIFR-PYZC-0001`](/errors/SIFR-PYZC-0001) | Error | An advanced-data ownership, buffer layout, or hidden-copy declaration is invalid. | | [`SIFR-RUST-CONFIG-0001`](/errors/SIFR-RUST-CONFIG-0001) | Error | Rust interop decorator syntax is malformed. | | [`SIFR-RUST-RESOLVE-0001`](/errors/SIFR-RUST-RESOLVE-0001) | Error | Rust interop target root cannot be resolved. | | [`SIFR-RUST-TRUST-0001`](/errors/SIFR-RUST-TRUST-0001) | Error | Rust interop trust declaration is missing. | | [`SIFR-RUST-TYPE-0001`](/errors/SIFR-RUST-TYPE-0001) | Error | Rust bridge probe failed type-contract validation. | | [`SIFR-RUST-HANDLE-0001`](/errors/SIFR-RUST-HANDLE-0001) | Error | Rust opaque handle contract is invalid. | | [`SIFR-RUST-ASYNC-0001`](/errors/SIFR-RUST-ASYNC-0001) | Error | Rust async interop contract is invalid. | | [`SIFR-RUST-ZC-0001`](/errors/SIFR-RUST-ZC-0001) | Error | Rust zero-copy or borrowed-view contract is invalid. | | [`SIFR-RUST-CB-0001`](/errors/SIFR-RUST-CB-0001) | Error | Rust callback lifetime, threading, or policy contract is invalid. | | [`SIFR-RUST-PANIC-0001`](/errors/SIFR-RUST-PANIC-0001) | Error | Rust panic boundary contract is invalid. | | [`SIFR-RUST-CARGO-0001`](/errors/SIFR-RUST-CARGO-0001) | Error | Rust interop Cargo metadata is unavailable or inconsistent. | ## Reserved Codes | Code | Family | Summary | | ---------------------------------------------------- | -------------- | ------------------------------------------------------------------------------------------------------------- | | [`SIFR-PARSE-0000`](/errors/diagnostic-codes) | `PARSE` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-NAME-0000`](/errors/diagnostic-codes) | `NAME` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-IMPORT-0000`](/errors/diagnostic-codes) | `IMPORT` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-TYPE-0000`](/errors/diagnostic-codes) | `TYPE` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-META-0000`](/errors/diagnostic-codes) | `META` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-ASYNC-0000`](/errors/diagnostic-codes) | `ASYNC` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PYENV-0000`](/errors/diagnostic-codes) | `PYENV` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PYIMP-0000`](/errors/diagnostic-codes) | `PYIMP` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PYCALL-0000`](/errors/diagnostic-codes) | `PYCALL` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PYCONV-0000`](/errors/diagnostic-codes) | `PYCONV` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PYRES-0000`](/errors/diagnostic-codes) | `PYRES` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PYASYNC-0000`](/errors/diagnostic-codes) | `PYASYNC` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PYCTX-0000`](/errors/diagnostic-codes) | `PYCTX` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PYZC-0000`](/errors/diagnostic-codes) | `PYZC` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PYCB-0000`](/errors/diagnostic-codes) | `PYCB` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PYTRUST-0000`](/errors/diagnostic-codes) | `PYTRUST` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PYTRUST-0002`](/errors/diagnostic-codes) | `PYTRUST` | Retired: import requirements and root authorization now use [`SIFR-PYTRUST-0005`](/errors/SIFR-PYTRUST-0005). | | [`SIFR-RUST-CONFIG-0000`](/errors/diagnostic-codes) | `RUST-CONFIG` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-RUST-RESOLVE-0000`](/errors/diagnostic-codes) | `RUST-RESOLVE` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-RUST-TRUST-0000`](/errors/diagnostic-codes) | `RUST-TRUST` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-RUST-TYPE-0000`](/errors/diagnostic-codes) | `RUST-TYPE` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-RUST-HANDLE-0000`](/errors/diagnostic-codes) | `RUST-HANDLE` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-RUST-ASYNC-0000`](/errors/diagnostic-codes) | `RUST-ASYNC` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-RUST-ZC-0000`](/errors/diagnostic-codes) | `RUST-ZC` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-RUST-CB-0000`](/errors/diagnostic-codes) | `RUST-CB` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-RUST-PANIC-0000`](/errors/diagnostic-codes) | `RUST-PANIC` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-RUST-CARGO-0000`](/errors/diagnostic-codes) | `RUST-CARGO` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-DECIMAL-0000`](/errors/diagnostic-codes) | `DECIMAL` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-INT-0000`](/errors/diagnostic-codes) | `INT` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-IO-0000`](/errors/diagnostic-codes) | `IO` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-ENCODING-0000`](/errors/diagnostic-codes) | `ENCODING` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PYRES-0001`](/errors/diagnostic-codes) | `PYRES` | Reserved for an invalid Python opaque cleanup or ownership policy. | | [`SIFR-PYASYNC-0001`](/errors/diagnostic-codes) | `PYASYNC` | Reserved for an invalid Python awaitable, cancellation, or loop-ownership declaration. | | [`SIFR-INT-0002`](/errors/diagnostic-codes) | `INT` | Reserved for implicit narrowing from exact or fixed-width integer sources to narrower fixed-width targets. | | [`SIFR-INT-0008`](/errors/diagnostic-codes) | `INT` | Reserved for fixed-width array, tensor, or dataframe arithmetic without an explicit overflow policy. | | [`SIFR-INT-0010`](/errors/diagnostic-codes) | `INT` | Reserved for bytes or bytearray construction and mutation values that do not fit uint8. | | [`SIFR-TYPE-0903`](/errors/diagnostic-codes) | `TYPE` | Retired: direct annotated workload calls from async code are now ASYNC-family errors. | | [`SIFR-CALL-0000`](/errors/diagnostic-codes) | `CALL` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-OWN-0000`](/errors/diagnostic-codes) | `OWN` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-FLOW-0000`](/errors/diagnostic-codes) | `FLOW` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-FMT-0000`](/errors/diagnostic-codes) | `FMT` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-LINT-0000`](/errors/diagnostic-codes) | `LINT` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-MATCH-0000`](/errors/diagnostic-codes) | `MATCH` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PROTO-0000`](/errors/diagnostic-codes) | `PROTO` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-CLASS-0000`](/errors/diagnostic-codes) | `CLASS` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-RESULT-0000`](/errors/diagnostic-codes) | `RESULT` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-STDLIB-0000`](/errors/diagnostic-codes) | `STDLIB` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-WORKSPACE-0000`](/errors/diagnostic-codes) | `WORKSPACE` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PACKAGE-0000`](/errors/diagnostic-codes) | `PACKAGE` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-PACKAGE-0105`](/errors/diagnostic-codes) | `PACKAGE` | Retired: Cargo credential failures are wrapped by [`SIFR-PACKAGE-0101`](/errors/SIFR-PACKAGE-0101). | | [`SIFR-PACKAGE-0302`](/errors/diagnostic-codes) | `PACKAGE` | Reserved for future backend trust diagnostics. | | [`SIFR-PACKAGE-0306`](/errors/diagnostic-codes) | `PACKAGE` | Reserved for future backend trust and feature diagnostics. | | [`SIFR-PACKAGE-0307`](/errors/diagnostic-codes) | `PACKAGE` | Reserved for future backend trust and feature diagnostics. | | [`SIFR-PACKAGE-0308`](/errors/diagnostic-codes) | `PACKAGE` | Reserved for future backend trust and feature diagnostics. | | [`SIFR-PACKAGE-0309`](/errors/diagnostic-codes) | `PACKAGE` | Reserved for future backend trust and feature diagnostics. | | [`SIFR-CODEGEN-0000`](/errors/diagnostic-codes) | `CODEGEN` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-BUILD-0000`](/errors/diagnostic-codes) | `BUILD` | Reserved family base; not emitted as a diagnostic. | | [`SIFR-INTERNAL-0000`](/errors/diagnostic-codes) | `INTERNAL` | Reserved family base; not emitted as a diagnostic. |