lint: advise that warnings may not become errors

[ee7]

We set a deadline of October 2021 for turning these warnings into errors, but we didn't act on it. Quite a few tracks still have some work to do.

Let's give tracks a little more time to address these warnings.

---

At the time of writing, there are 10 tracks for which configlet lint produces a warning:

csharp

The lint command is under development.
Please re-run this command regularly to see if your track passes the latest linting rules.

Warning: The following concepts exist in the `practices` array of a Practice Exercise in `./csharp/config.json`, but do not exist in the top-level `concepts` array
linq
queues
stacks
multi-dimensional-arrays
streams
lazy-evaluation
recursion
yield
generic-methods
foreach
immutability
higher-order-functions
parallellism
comparing
generic-constraints
globalization
concurrency
big-integers
events

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./csharp/config.json`, but are not in the `concepts` array of any user-facing Concept Exercise
math-operators
integers
bit-manipulation
enumerables
queues
stacks
multi-dimensional-arrays
streams
generic-methods
lambdas
foreach
immutability
higher-order-functions
parallellism
lazy-evaluation
comparing
generic-constraints
globalization
observables
big-integers
events

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./csharp/config.json`, but do not exist in the top-level `concepts` array
integers
queues
stacks
multi-dimensional-arrays
streams
generic-methods
foreach
immutability
higher-order-functions
parallellism
lazy-evaluation
comparing
generic-constraints
globalization
observables
big-integers
events

Basic linting finished successfully:
- config.json exists and is valid JSON
- config.json has these valid fields:
language, slug, active, blurb, version, status, online_editor, key_features, tags
- Every concept has the required .md files
- Every concept has a valid links.json file
- Every concept has a valid .meta/config.json file
- Every concept exercise has the required .md files
- Every concept exercise has a valid .meta/config.json file
- Every practice exercise has the required .md files
- Every practice exercise has a valid .meta/config.json file
- Required track docs are present
- Required shared exercise docs are present

Warning: Configlet produced at least one warning.
These warnings will become errors in a future configlet release (at the end of October 2021).
For more information, please see the documentation:
https://github.com/exercism/docs/blob/main/building/configlet/lint.md

factor

The lint command is under development.
Please re-run this command regularly to see if your track passes the latest linting rules.

Warning: The following concepts exist in the `practices` array of a Practice Exercise in `./factor/config.json`, but do not exist in the top-level `concepts` array
word-definition
stack-effect
strings
quotations
conditionals
math
collections
combinators

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./factor/config.json`, but are not in the `concepts` array of any user-facing Concept Exercise
word-definition
stack-effect
strings
quotations
logical-operators
combinators
collections

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./factor/config.json`, but do not exist in the top-level `concepts` array
word-definition
stack-effect
strings
quotations
logical-operators
combinators
collections

Basic linting finished successfully:
- config.json exists and is valid JSON
- config.json has these valid fields:
language, slug, active, blurb, version, status, online_editor, key_features, tags
- Every concept has the required .md files
- Every concept has a valid links.json file
- Every concept has a valid .meta/config.json file
- Every concept exercise has the required .md files
- Every concept exercise has a valid .meta/config.json file
- Every practice exercise has the required .md files
- Every practice exercise has a valid .meta/config.json file
- Required track docs are present
- Required shared exercise docs are present

Warning: Configlet produced at least one warning.
These warnings will become errors in a future configlet release (at the end of October 2021).
For more information, please see the documentation:
https://github.com/exercism/docs/blob/main/building/configlet/lint.md

fortran

The lint command is under development.
Please re-run this command regularly to see if your track passes the latest linting rules.

Warning: The following concepts exist in the `practices` array of a Practice Exercise in `./fortran/config.json`, but do not exist in the top-level `concepts` array
equality
conditionals

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./fortran/config.json`, but are not in the `concepts` array of any user-facing Concept Exercise
equality
conditionals

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./fortran/config.json`, but do not exist in the top-level `concepts` array
equality
conditionals

Basic linting finished successfully:
- config.json exists and is valid JSON
- config.json has these valid fields:
language, slug, active, blurb, version, status, online_editor, key_features, tags
- Every concept has the required .md files
- Every concept has a valid links.json file
- Every concept has a valid .meta/config.json file
- Every concept exercise has the required .md files
- Every concept exercise has a valid .meta/config.json file
- Every practice exercise has the required .md files
- Every practice exercise has a valid .meta/config.json file
- Required track docs are present
- Required shared exercise docs are present

Warning: Configlet produced at least one warning.
These warnings will become errors in a future configlet release (at the end of October 2021).
For more information, please see the documentation:
https://github.com/exercism/docs/blob/main/building/configlet/lint.md

fsharp

The lint command is under development.
Please re-run this command regularly to see if your track passes the latest linting rules.

Warning: The following concepts exist in the `practices` array of a Practice Exercise in `./fsharp/config.json`, but do not exist in the top-level `concepts` array
string-formatting
generic-functions
ordering
equality
ranges
bit-manipulation
flag-discriminated-unions
regular-expressions
collection-processing
sets
result
members
concurrency
constructors
generic-types
immutability
integral-numbers
math-operators
while-loops
extension-methods
structs
yield
lazy-evaluation
operator-overloading
big-integers
randomness
exceptions
generic-methods
nullability
switch-statements
switch-expressions
globalization
parameters
casting
resource-cleanup
multi-dimensional-arrays
interfaces
parallellism
optional-parameters
for-loops
streams
string-builder
stacks
queues
comparing
generic-constraints
inheritance
events

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./fsharp/config.json`, but are not in the `concepts` array of any user-facing Concept Exercise
options
generic-functions
higher-order-functions
integral-numbers
ordering
equality
string-formatting
ranges
chars
bit-manipulation
for-loops
result
constructors
members
classes
generic-types
math-operators
while-loops
extension-methods
immutability
structs
operator-overloading
big-integers
randomness
sets
exceptions
generic-methods
nullability
maps
flag-discriminated-unions
globalization
parameters
casting
resource-cleanup
multi-dimensional-arrays
interfaces
parallellism
optional-parameters
collection-processing
streams
stacks
queues
lazy-evaluation
comparing
generic-constraints
observables
inheritance
events

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./fsharp/config.json`, but do not exist in the top-level `concepts` array
options
generic-functions
integral-numbers
ordering
equality
string-formatting
ranges
chars
bit-manipulation
for-loops
result
constructors
members
generic-types
math-operators
while-loops
extension-methods
immutability
structs
operator-overloading
big-integers
randomness
sets
exceptions
generic-methods
nullability
maps
flag-discriminated-unions
globalization
parameters
casting
resource-cleanup
multi-dimensional-arrays
interfaces
parallellism
optional-parameters
collection-processing
streams
stacks
queues
lazy-evaluation
comparing
generic-constraints
observables
inheritance
events

Basic linting finished successfully:
- config.json exists and is valid JSON
- config.json has these valid fields:
language, slug, active, blurb, version, status, online_editor, key_features, tags
- Every concept has the required .md files
- Every concept has a valid links.json file
- Every concept has a valid .meta/config.json file
- Every concept exercise has the required .md files
- Every concept exercise has a valid .meta/config.json file
- Every practice exercise has the required .md files
- Every practice exercise has a valid .meta/config.json file
- Required track docs are present
- Required shared exercise docs are present

Warning: Configlet produced at least one warning.
These warnings will become errors in a future configlet release (at the end of October 2021).
For more information, please see the documentation:
https://github.com/exercism/docs/blob/main/building/configlet/lint.md

java

The lint command is under development.
Please re-run this command regularly to see if your track passes the latest linting rules.

Warning: The following concepts exist in the `practices` array of a Practice Exercise in `./java/config.json`, but do not exist in the top-level `concepts` array
enums
switch-statements

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./java/config.json`, but are not in the `concepts` array of any user-facing Concept Exercise
enums
if-statements

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./java/config.json`, but do not exist in the top-level `concepts` array
enums
if-statements

Basic linting finished successfully:
- config.json exists and is valid JSON
- config.json has these valid fields:
language, slug, active, blurb, version, status, online_editor, key_features, tags
- Every concept has the required .md files
- Every concept has a valid links.json file
- Every concept has a valid .meta/config.json file
- Every concept exercise has the required .md files
- Every concept exercise has a valid .meta/config.json file
- Every practice exercise has the required .md files
- Every practice exercise has a valid .meta/config.json file
- Required track docs are present
- Required shared exercise docs are present

Warning: Configlet produced at least one warning.
These warnings will become errors in a future configlet release (at the end of October 2021).
For more information, please see the documentation:
https://github.com/exercism/docs/blob/main/building/configlet/lint.md

javascript

The lint command is under development.
Please re-run this command regularly to see if your track passes the latest linting rules.

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./javascript/config.json`, but are not in the `concepts` array of any user-facing Concept Exercise
dates
array-transformations
classes
regular-expressions
recursion
codepoints
randomness
bit-manipulation
math
maps

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./javascript/config.json`, but do not exist in the top-level `concepts` array
dates
array-transformations
classes
regular-expressions
codepoints
randomness
bit-manipulation
math
maps

Basic linting finished successfully:
- config.json exists and is valid JSON
- config.json has these valid fields:
language, slug, active, blurb, version, status, online_editor, key_features, tags
- Every concept has the required .md files
- Every concept has a valid links.json file
- Every concept has a valid .meta/config.json file
- Every concept exercise has the required .md files
- Every concept exercise has a valid .meta/config.json file
- Every practice exercise has the required .md files
- Every practice exercise has a valid .meta/config.json file
- Required track docs are present
- Required shared exercise docs are present

Warning: Configlet produced at least one warning.
These warnings will become errors in a future configlet release (at the end of October 2021).
For more information, please see the documentation:
https://github.com/exercism/docs/blob/main/building/configlet/lint.md

red

The lint command is under development.
Please re-run this command regularly to see if your track passes the latest linting rules.

Warning: The following concepts exist in the `practices` array of a Practice Exercise in `./red/config.json`, but do not exist in the top-level `concepts` array
series

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./red/config.json`, but are not in the `concepts` array of any user-facing Concept Exercise
basics
blocks
maths
strings
errors

Basic linting finished successfully:
- config.json exists and is valid JSON
- config.json has these valid fields:
language, slug, active, blurb, version, status, online_editor, key_features, tags
- Every concept has the required .md files
- Every concept has a valid links.json file
- Every concept has a valid .meta/config.json file
- Every concept exercise has the required .md files
- Every concept exercise has a valid .meta/config.json file
- Every practice exercise has the required .md files
- Every practice exercise has a valid .meta/config.json file
- Required track docs are present
- Required shared exercise docs are present

Warning: Configlet produced at least one warning.
These warnings will become errors in a future configlet release (at the end of October 2021).
For more information, please see the documentation:
https://github.com/exercism/docs/blob/main/building/configlet/lint.md

ruby

The lint command is under development.
Please re-run this command regularly to see if your track passes the latest linting rules.

Warning: The following concepts exist in the `practices` array of a Practice Exercise in `./ruby/config.json`, but do not exist in the top-level `concepts` array
regular-expressions
ordering
classes
hashes
casting
sets
equality
time
math-operators
enumerable
recursion
integral-numbers
constructors
lambdas
higher-order-functions
lazy-evaluation
stacks
bit-manipulation
symbols
parameters
randomness
queues
immutability
structs
dates
string-formatting

Warning: The Concept `strings` appears 21 times in the `practices` arrays of user-facing Practice Exercises, but can only appear at most 10 times:
./ruby/config.json

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./ruby/config.json`, but are not in the `concepts` array of any user-facing Concept Exercise
constructors
ordering
classes
hashes
casting
equality
time
integers
math-operators
enumerable
integral-numbers
generic-methods
lambdas
higher-order-functions
symbols
lazy-evaluation
stacks
bit-manipulation
parameters
randomness
queues
immutability
sets
structs
dates
string-formatting

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./ruby/config.json`, but do not exist in the top-level `concepts` array
constructors
ordering
classes
hashes
casting
equality
time
integers
math-operators
enumerable
integral-numbers
generic-methods
lambdas
higher-order-functions
symbols
lazy-evaluation
stacks
bit-manipulation
parameters
randomness
queues
immutability
sets
structs
dates
string-formatting

Basic linting finished successfully:
- config.json exists and is valid JSON
- config.json has these valid fields:
language, slug, active, blurb, version, status, online_editor, key_features, tags
- Every concept has the required .md files
- Every concept has a valid links.json file
- Every concept has a valid .meta/config.json file
- Every concept exercise has the required .md files
- Every concept exercise has a valid .meta/config.json file
- Every practice exercise has the required .md files
- Every practice exercise has a valid .meta/config.json file
- Required track docs are present
- Required shared exercise docs are present

Warning: Configlet produced at least one warning.
These warnings will become errors in a future configlet release (at the end of October 2021).
For more information, please see the documentation:
https://github.com/exercism/docs/blob/main/building/configlet/lint.md

vbnet

The lint command is under development.
Please re-run this command regularly to see if your track passes the latest linting rules.

Warning: The following concepts exist in the `practices` array of a Practice Exercise in `./vbnet/config.json`, but do not exist in the top-level `concepts` array
optional-parameters
string-interpolation
yield
lambdas
foreach
arrays
linq
if-statements
for-loops
lists
ordering
stacks
numbers

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./vbnet/config.json`, but are not in the `concepts` array of any user-facing Concept Exercise
optional-parameters
string-interpolation
lambdas
extension-methods
generic-types
enumerables
foreach
arrays
strings
integers
if-statements
for-loops
numbers
lists
constructors
ordering
chars
stacks
booleans
exceptions
enums

Warning: The following concepts exist in the `prerequisites` array of a Practice Exercise in `./vbnet/config.json`, but do not exist in the top-level `concepts` array
optional-parameters
string-interpolation
lambdas
extension-methods
generic-types
enumerables
foreach
arrays
strings
integers
if-statements
for-loops
numbers
lists
constructors
ordering
chars
stacks
booleans
exceptions
enums

Basic linting finished successfully:
- config.json exists and is valid JSON
- config.json has these valid fields:
language, slug, active, blurb, version, status, online_editor, key_features, tags
- Every concept has the required .md files
- Every concept has a valid links.json file
- Every concept has a valid .meta/config.json file
- Every concept exercise has the required .md files
- Every concept exercise has a valid .meta/config.json file
- Every practice exercise has the required .md files
- Every practice exercise has a valid .meta/config.json file
- Required track docs are present
- Required shared exercise docs are present

Warning: Configlet produced at least one warning.
These warnings will become errors in a future configlet release (at the end of October 2021).
For more information, please see the documentation:
https://github.com/exercism/docs/blob/main/building/configlet/lint.md

wren

The lint command is under development.
Please re-run this command regularly to see if your track passes the latest linting rules.

Warning: The following concepts exist in the `practices` array of a Practice Exercise in `./wren/config.json`, but do not exist in the top-level `concepts` array
strings
text-formatting
optional-values
lists
maps
enumeration
exceptions
numbers
loops
recursion
getters
fields
classes
sequences
operator-overloading
match
math

Warning: The Concept `strings` appears 20 times in the `practices` arrays of user-facing Practice Exercises, but can only appear at most 10 times:
./wren/config.json

Basic linting finished successfully:
- config.json exists and is valid JSON
- config.json has these valid fields:
language, slug, active, blurb, version, status, online_editor, key_features, tags
- Every concept has the required .md files
- Every concept has a valid links.json file
- Every concept has a valid .meta/config.json file
- Every concept exercise has the required .md files
- Every concept exercise has a valid .meta/config.json file
- Every practice exercise has the required .md files
- Every practice exercise has a valid .meta/config.json file
- Required track docs are present
- Required shared exercise docs are present

Warning: Configlet produced at least one warning.
These warnings will become errors in a future configlet release (at the end of October 2021).
For more information, please see the documentation:
https://github.com/exercism/docs/blob/main/building/configlet/lint.md

[ErikSchierboom]

We've updated the website to gracefully handle these cases, so there is no need to rush right now. It should still be a warning, but I'm not sure it needs to become an error anymore. 🤷