• using R version 4.6.1 RC (2026-06-18 r90186)
• using platform: x86_64-pc-linux-gnu
• R was compiled by     gcc-15 (Debian 15.3.0-1) 15.3.0     GNU Fortran (Debian 15.3.0-1) 15.3.0
• running under: Debian GNU/Linux forky/sid
• using session charset: UTF-8 * current time: 2026-06-24 16:08:45 UTC
• checking for file ‘muttest/DESCRIPTION’ ... OK
• checking extension type ... Package
• this is package ‘muttest’ version ‘0.2.0’
• package encoding: UTF-8
• checking package namespace information ... OK
• checking package dependencies ... OK
• checking if this is a source package ... OK
• checking if there is a namespace ... OK
• checking for executable files ... OK
• checking for hidden files and directories ... OK
• checking for portable file names ... OK
• checking for sufficient/correct file permissions ... OK
• checking whether package ‘muttest’ can be installed ... OK See the install log for details.
• checking package directory ... OK
• checking for future file timestamps ... OK
• checking ‘build’ directory ... OK
• checking DESCRIPTION meta-information ... OK
• checking top-level files ... OK
• checking for left-over files ... OK
• checking index information ... OK
• checking package subdirectories ... OK
• checking code files for non-ASCII characters ... OK
• checking R files for syntax errors ... OK
• checking whether the package can be loaded ... [1s/1s] OK
• checking whether the package can be loaded with stated dependencies ... [0s/1s] OK
• checking whether the package can be unloaded cleanly ... [0s/1s] OK
• checking whether the namespace can be loaded with stated dependencies ... [0s/1s] OK
• checking whether the namespace can be unloaded cleanly ... [1s/1s] OK
• checking loading without being on the library search path ... [0s/1s] OK
• checking use of S3 registration ... OK
• checking dependencies in R code ... OK
• checking S3 generic/method consistency ... OK
• checking replacement functions ... OK
• checking foreign function calls ... OK
• checking R code for possible problems ... [5s/7s] OK
• checking Rd files ... [1s/1s] OK
• checking Rd metadata ... OK
• checking Rd line widths ... OK
• checking Rd cross-references ... OK
• checking for missing documentation entries ... OK
• checking for code/documentation mismatches ... OK
• checking Rd \usage sections ... OK
• checking Rd contents ... OK
• checking for unstated dependencies in examples ... OK
• checking installed files from ‘inst/doc’ ... OK
• checking files in ‘vignettes’ ... OK
• checking examples ... [1s/1s] OK
• checking for unstated dependencies in ‘tests’ ... OK
• checking tests ... [10s/30s] ERROR   Running ‘testthat.R’ [9s/30s] Running the tests in ‘tests/testthat.R’ failed. Complete output:   > # This file is part of the standard setup for testthat.   > # It is recommended that you do not modify it.   > #   > # Where should you do additional test configuration?   > # Learn more about the roles of various files in:   > # * https://r-pkgs.org/testing-design.html#sec-tests-files-overview   > # * https://testthat.r-lib.org/articles/special-files.html   >   > library(testthat)   > library(muttest)      Attaching package: 'muttest'      The following object is masked from 'package:testthat':          default_reporter      >   > test_check("muttest")   Saving _problems/test-mutator-return-8.R   Saving _problems/test-mutator-return-13.R   Saving _problems/test-mutator-return-22.R   Saving _problems/test-mutator-return-31.R   Saving _problems/test-mutator-return-37.R   Saving _problems/test-mutator-return-46.R   Saving _problems/test-mutator-return-53.R   Saving _problems/test-mutator-return-58.R   Saving _problems/test-mutator-return-87.R   Saving _problems/test-mutator-return-92.R   Saving _problems/test-mutator-return-103.R   Saving _problems/test-mutator-return-108.R   Saving _problems/test-mutator-return-117.R   Saving _problems/test-mutator-return-122.R   [ FAIL 14 | WARN 0 | SKIP 13 | PASS 220 ]      ══ Skipped tests (13) ══════════════════════════════════════════════════════════   • On CRAN (6): 'test-muttest.R:9:3', 'test-muttest.R:51:5',     'test-parallel.R:2:3', 'test-test_reporter-progress.R:1:1',     'test-test_reporter-progress.R:17:1', 'test-test_reporter-progress.R:33:1'   • TODO: Currently matches on !!!. (2): 'test-mutator-condition.R:137:5',     'test-mutator-unary.R:55:5'   • TODO: Currently matches on !!. (2): 'test-mutator-condition.R:133:5',     'test-mutator-unary.R:51:5'   • TODO: Implement implicit return mutation. (2): 'test-mutator-return.R:64:5',     'test-mutator-return.R:70:5'   • covr::in_covr() is not TRUE (1): 'test-acceptance.R:2:1'      ══ Failed tests ════════════════════════════════════════════════════════════════   ── Error ('test-mutator-return.R:4:5'): replace_return_value default (NULL) / should replace the return value with NULL ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─muttest:::expect_mutates_to(mutator, c("return(x)"), list(c("return(NULL)"))) at test-mutator-return.R:4:5    2. └─mutator$mutate(input) at ./setup-expect.R:2:3    3. └─muttest:::mutate_code(code, self)    4. └─treesitter::query(language, mutator$query)    5. └─treesitter:::query_error(pointer, source)    6. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:13:5'): replace_return_value default (NULL) / should not mutate return(NULL) when replacement is NULL ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─muttest:::expect_no_mutations(mutator, c("return(NULL)")) at test-mutator-return.R:13:5    2. ├─testthat::expect_null(mutator$mutate(input)) at ./setup-expect.R:7:3    3. │ └─testthat::quasi_label(enquo(object), label)    4. │ └─rlang::eval_bare(expr, quo_get_env(quo))    5. └─mutator$mutate(input)    6. └─muttest:::mutate_code(code, self)    7. └─treesitter::query(language, mutator$query)    8. └─treesitter:::query_error(pointer, source)    9. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:18:5'): replace_return_value default (NULL) / should replace a complex return expression ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─muttest:::expect_mutates_to(mutator, c("return(x + 1)"), list(c("return(NULL)"))) at test-mutator-return.R:18:5    2. └─mutator$mutate(input) at ./setup-expect.R:2:3    3. └─muttest:::mutate_code(code, self)    4. └─treesitter::query(language, mutator$query)    5. └─treesitter:::query_error(pointer, source)    6. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:27:5'): replace_return_value default (NULL) / should replace a nested call return expression ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─muttest:::expect_mutates_to(...) at test-mutator-return.R:27:5    2. └─mutator$mutate(input) at ./setup-expect.R:2:3    3. └─muttest:::mutate_code(code, self)    4. └─treesitter::query(language, mutator$query)    5. └─treesitter:::query_error(pointer, source)    6. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:37:5'): replace_return_value default (NULL) / should generate one mutation per return call ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─mutator$mutate(code) at test-mutator-return.R:37:5    2. └─muttest:::mutate_code(code, self)    3. └─treesitter::query(language, mutator$query)    4. └─treesitter:::query_error(pointer, source)    5. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:46:5'): replace_return_value default (NULL) / should work across multiple lines ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─mutator$mutate(code) at test-mutator-return.R:46:5    2. └─muttest:::mutate_code(code, self)    3. └─treesitter::query(language, mutator$query)    4. └─treesitter:::query_error(pointer, source)    5. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:53:5'): replace_return_value default (NULL) / should return NULL when no return() calls are present ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─muttest:::expect_no_mutations(mutator, c("x + 1")) at test-mutator-return.R:53:5    2. ├─testthat::expect_null(mutator$mutate(input)) at ./setup-expect.R:7:3    3. │ └─testthat::quasi_label(enquo(object), label)    4. │ └─rlang::eval_bare(expr, quo_get_env(quo))    5. └─mutator$mutate(input)    6. └─muttest:::mutate_code(code, self)    7. └─treesitter::query(language, mutator$query)    8. └─treesitter:::query_error(pointer, source)    9. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:58:5'): replace_return_value default (NULL) / should not match return() with no argument ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─muttest:::expect_no_mutations(mutator, c("return()")) at test-mutator-return.R:58:5    2. ├─testthat::expect_null(mutator$mutate(input)) at ./setup-expect.R:7:3    3. │ └─testthat::quasi_label(enquo(object), label)    4. │ └─rlang::eval_bare(expr, quo_get_env(quo))    5. └─mutator$mutate(input)    6. └─muttest:::mutate_code(code, self)    7. └─treesitter::query(language, mutator$query)    8. └─treesitter:::query_error(pointer, source)    9. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:83:5'): replace_return_value with NA replacement / should replace the return value with NA ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─muttest:::expect_mutates_to(mutator, c("return(x)"), list(c("return(NA)"))) at test-mutator-return.R:83:5    2. └─mutator$mutate(input) at ./setup-expect.R:2:3    3. └─muttest:::mutate_code(code, self)    4. └─treesitter::query(language, mutator$query)    5. └─treesitter:::query_error(pointer, source)    6. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:92:5'): replace_return_value with NA replacement / should not mutate return(NA) when replacement is NA ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─muttest:::expect_no_mutations(mutator, c("return(NA)")) at test-mutator-return.R:92:5    2. ├─testthat::expect_null(mutator$mutate(input)) at ./setup-expect.R:7:3    3. │ └─testthat::quasi_label(enquo(object), label)    4. │ └─rlang::eval_bare(expr, quo_get_env(quo))    5. └─mutator$mutate(input)    6. └─muttest:::mutate_code(code, self)    7. └─treesitter::query(language, mutator$query)    8. └─treesitter:::query_error(pointer, source)    9. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:99:5'): replace_return_value with string replacements / should insert the string "NULL" when replacement is '"NULL"' ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─muttest:::expect_mutates_to(mutator, c("return(x)"), list(c("return(\"NULL\")"))) at test-mutator-return.R:99:5    2. └─mutator$mutate(input) at ./setup-expect.R:2:3    3. └─muttest:::mutate_code(code, self)    4. └─treesitter::query(language, mutator$query)    5. └─treesitter:::query_error(pointer, source)    6. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:108:5'): replace_return_value with string replacements / should not mutate return("NULL") when replacement is '"NULL"' ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─muttest:::expect_no_mutations(mutator, c("return(\"NULL\")")) at test-mutator-return.R:108:5    2. ├─testthat::expect_null(mutator$mutate(input)) at ./setup-expect.R:7:3    3. │ └─testthat::quasi_label(enquo(object), label)    4. │ └─rlang::eval_bare(expr, quo_get_env(quo))    5. └─mutator$mutate(input)    6. └─muttest:::mutate_code(code, self)    7. └─treesitter::query(language, mutator$query)    8. └─treesitter:::query_error(pointer, source)    9. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:113:5'): replace_return_value with string replacements / should insert the string "NA" when replacement is '"NA"' ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─muttest:::expect_mutates_to(mutator, c("return(x)"), list(c("return(\"NA\")"))) at test-mutator-return.R:113:5    2. └─mutator$mutate(input) at ./setup-expect.R:2:3    3. └─muttest:::mutate_code(code, self)    4. └─treesitter::query(language, mutator$query)    5. └─treesitter:::query_error(pointer, source)    6. └─rlang::abort(message, call = call)   ── Error ('test-mutator-return.R:122:5'): replace_return_value with string replacements / should not mutate return("NA") when replacement is '"NA"' ──   Error in `treesitter::query(language, mutator$query)`: Can't initialize this query.   i Node type error at offset 18 in `source`.      ```   (call function: (<HERE>return) arguments: (arguments (argument value: (_) @value)))   ```   Backtrace:       ▆    1. └─muttest:::expect_no_mutations(mutator, c("return(\"NA\")")) at test-mutator-return.R:122:5    2. ├─testthat::expect_null(mutator$mutate(input)) at ./setup-expect.R:7:3    3. │ └─testthat::quasi_label(enquo(object), label)    4. │ └─rlang::eval_bare(expr, quo_get_env(quo))    5. └─mutator$mutate(input)    6. └─muttest:::mutate_code(code, self)    7. └─treesitter::query(language, mutator$query)    8. └─treesitter:::query_error(pointer, source)    9. └─rlang::abort(message, call = call)      [ FAIL 14 | WARN 0 | SKIP 13 | PASS 220 ]   Error:   ! Test failures.   Execution halted
• checking for unstated dependencies in vignettes ... OK
• checking package vignettes ... OK
• checking re-building of vignette outputs ... [11s/62s] OK
• checking PDF version of manual ... [7s/10s] OK
• checking HTML version of manual ... [4s/6s] OK
• checking for non-standard things in the check directory ... OK
• DONE

Status: 1 ERROR