ErrLookup › diesel-rs/diesel

diesel-rs/diesel

A safe, extensible ORM and Query Builder for Rust · Rust · 420 source files

Analyzed at 6fa6ed01b2 on 2026-09-07. 99 documented errors.

Code / Message	Type	Severity	Tags
Failed to create embedded migrations instance	panic	error	rust, proc-macro, compile-time, diesel, migrations
warning: = help	console	warning	rust, diesel, deprecation, proc-macro, diagnostics
#[ ] attribute form is deprecated	console	warning	rust, diesel, deprecation, proc-macro, attributes
, the correct format is `generate_return_type_helpers =…	exception	error
got invalid case identifier	exception	error
Unknown case: , expected one of: `PascalCase`…	exception	error
references are not supported in `Queryable` types consider…	exception	error	rust, proc-macro, diesel, compile-time
Unable to perform MySQL global initialization	panic	critical	mysql, initialization, panic, diesel
Only enums are supported as multiconnection type	panic	error
Can't get file name from path	panic	error	compile-time, proc-macro, migrations, path
Failed to convert BigDecimal to PgNumeric	panic	error
DIESEL_MAX_COLUMN_COUNT is a number that fits into a u16	panic	error	compile-time, env-var, build-configuration, diesel
expected `foreign_key`	validation	error	rust, proc-macro, diesel-derive, attribute-syntax
Maximal supported month interval size is 32 bit	panic	error
unsupported literal for auto_type, please provide a type…	exception	error
expected `oid` and `array_oid` attribute or `name`…	exception	error
Field not found	panic	error
unexpected end of input, expected parentheses help: the…	exception	error	rust, proc-macro, diesel, syntax
unsupported expression for auto_type, please provide a type…	exception	error	rust, proc-macro, type-inference, compile-time
overflow adding money amounts	panic	error
Error closing SQLite connection	panic	error	sqlite, drop-panic, resource-cleanup, diesel
Invalid `#[sql_name = ]` attribute	exception	error
`#[diesel(embed)]` cannot be combined with…	exception	error	diesel, derive-macro, rust, orm
expected `disable`, but got	exception	error
Expected `#[ ]` to have no arguments	exception	error
, the correct format is `#[window]	exception	error	rust, proc-macro, diesel, attributes, window-function
unexpected `oid` when `name` is present help	exception	error
expected attribute `name` help: the correct format looks…	exception	error
, the correct format is `#[variadic(last_arguments = 3)]`…	exception	error	proc-macro, rust, attribute-parsing, diesel
Invalid config	exception	error
expected `treat_none_as_null`	exception	error	rust, proc-macro, diesel-derive, attribute-syntax
expect `skip_zero_argument_variant`	exception	error	proc-macro, rust, attribute-parsing, diesel
Tuples should never implement `ToSql` directly	panic	error	types, to-sql, tuples, compile-time-panic
underflow subtracting money amounts	panic	error
Hit a type that should be unsupported in libmysqlclient. If…	panic	error	mysql, type-mapping, unsupported-type, panics
Using window functions in WHERE clauses is not supported	panic	error	compile-time, sql, window-functions, diesel
You've reached an impossible internal state. If you ever…	panic	critical	mysql, internal-bug, iterator, unreachable
` ` must be in the form `#[ ="something"]	panic	error	compile-time, proc-macro, attributes, syntax
foreign_derive requires at least one field	exception	error
Invalid migration directory: the directory's name should be	panic	error	compile-time, migrations, naming, proc-macro
unexpected `array_oid` when `name` is present help	exception	error
Function return type should be explicitly specified as `->…	validation	error	rust, proc-macro, return-type, compile-time
cannot find argument corresponding to the generic	exception	error	rust, proc-macro, diesel, generics, sql-function
last statement should be an expression for auto_type	validation	error	rust, proc-macro, statements, compile-time
, the correct format is `#[variadic(3)]	exception	error	proc-macro, rust, attribute-parsing, diesel
Error closing SQLite blob	panic	error	sqlite, blob, drop-panic, resource-cleanup, diesel
at least one `sql_type` is needed for deriving…	exception	error	diesel, derive-macro, rust, sql-types
foreign_derive can only be used with structs	exception	error
all fields of tuple structs must be annotated with…	exception	error	proc-macro, derive, column-name, tuple-struct, compile-time
type_name and type_case are mutually exclusive	exception	error	rust, proc-macro, attribute-options, compile-time
this derive can only be used on non-unit structs	exception	error	proc-macro, derive, unit-struct, compile-time
expected `name` to be also present help: make sure `name`…	exception	error
out of range integral type conversion attempted	exception	error	rust, sqlite, integer-overflow, blob-io
invalid variadic argument count: not enough function…	exception	error	rust, proc-macro, diesel, compile-time, sql-function
Sqlite's documentation state that this case	panic	critical	sqlite, ffi, internal-bug, unreachable
auto_type: unexpected double type ascription	exception	error	rust, proc-macro, patterns, compile-time
, the correct format is `#[aggregate]	exception	error	rust, proc-macro, diesel, attributes, sql-function
Maximal supported day interval size is 32 bit	panic	critical	diesel, postgres, interval, overflow, panic
function body should not be empty for auto_type	validation	error	rust, proc-macro, empty-body, compile-time
`embed` and `treat_none_as_default_value` are mutually…	exception	error	proc-macro, derive, insertable, attribute-conflict, compile-time
deriving `AsChangeset` on a structure that only contains…	exception	error	rust, diesel, proc-macro, as-changeset
unexpected token after positional `#[variadic(..)]`	exception	error	rust, proc-macro, diesel, attributes, syntax
no field with column name	exception	error	proc-macro, derive, associations, belongs-to, compile-time
auto_type: tuple let assignment and its type ascription…	exception	error	rust, proc-macro, patterns, compile-time
only the `env!` macro is expected here	exception	error	diesel, proc-macro, rust, macro-syntax
at least one `belongs_to` is needed for deriving…	exception	error	diesel, derive-macro, rust, orm-associations
Error finalizing SQLite prepared statement	panic	error
expected valid identifier, found	exception	error	rust, diesel-derive, identifier, naming
expected `treat_none_as_null` field to be of type `Option	exception	error	rust, diesel, proc-macro, type-mismatch
unknown attribute, expected	exception	error	rust, proc-macro, diesel, attribute-parsing
expect `last_arguments`	exception	error	rust, proc-macro, diesel, attributes, syntax
type_alias and no_type_alias are mutually exclusive	exception	error	rust, proc-macro, attribute-options, compile-time
expected a integer literal expression, but got something…	exception	error	proc-macro, derive, literal-parsing, compile-time
SQLite while reading a value as	panic	error
only `mysql_backend`, `mariadb_backend`, `postgres_backend`…	exception	error	proc-macro, rust, feature-flags, cfg, diesel
this derive can only be used on enums with exclusively…	exception	error	diesel, derive-macro, rust, enums, generics
expected a literal expression, but got something else	exception	error	diesel, derive-macro, rust, enums, literals
expected type	exception	error	rust, proc-macro, diesel, type-syntax
no `#[diesel(sql_type = ...)]` attribute provided	exception	error	proc-macro, derive, missing-attribute, compile-time
expected a single table name attribute note: remove this…	exception	error	proc-macro, derive, duplicate-attribute, compile-time
unexpected end of input, expected `=` help: the correct…	exception	error	rust, proc-macro, diesel, syntax
Expected ` ` to be set as environment variable	exception	error	diesel, proc-macro, rust, environment-variable, build-time
, the correct format is `#[skip_return_type_helper]	exception	error	rust, proc-macro, diesel, attributes, sql-function
Only enums with one field per variant are supported	panic	error
expect `SQL` function blocks to be safe	exception	error	rust, proc-macro, diesel, sql-function, unsafety
only single feature `cfg_attr` attributes are supported. Got	exception	error	proc-macro, rust, cfg, attribute-parsing, diesel
Expected ` ` to be a u16 integer value	exception	error	diesel, proc-macro, rust, environment-variable, integer-parsing
not implemented	panic	critical	rust, diesel, panic, todo-unimplemented, query-inference
unsupported binary operator for auto_type	exception	error
unexpected end of input, expected parentheses	exception	error	rust, proc-macro, diesel-derive, attribute-syntax
expect `SQL` as ABI	exception	error	rust, proc-macro, diesel, sql-function, abi
Expected `require_order` but got	exception	error	proc-macro, rust, attribute-parsing, diesel
auto_type: tuple type and its expression have different…	exception	error
Failed to receive migrations dir from	panic	error
unexpected option	exception	error	proc-macro, rust, attribute-parsing, diesel
Failed to read migration literals	panic	error
only `true` is accepted in this position. If you want to…	exception	error
expected valid identifier, found	exception	error
Failed to create trigger	panic	error