Nov 07 04:36:44.303 INFO checking Hoverbear/rust-rosetta against master#24e66c28980442a48d9458f1a4f9b76cc722dc8a for pr-55687
Nov 07 04:36:44.303 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55687/worker-2/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55687/master#24e66c28980442a48d9458f1a4f9b76cc722dc8a:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +24e66c28980442a48d9458f1a4f9b76cc722dc8a-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 07 04:36:44.748 INFO blam! 96e5e37def4353b7b6d6cf5fd190e45b6f1cf8ad4a5c8ef3c31c0f3736ece240
Nov 07 04:36:44.760 INFO running `"docker" "start" "-a" "96e5e37def4353b7b6d6cf5fd190e45b6f1cf8ad4a5c8ef3c31c0f3736ece240"`
Nov 07 04:36:45.788 INFO kablam! usermod: no changes
Nov 07 04:36:48.151 INFO kablam!     Checking rand_core v0.2.1
Nov 07 04:36:48.153 INFO kablam!    Compiling regex v1.0.2
Nov 07 04:36:48.154 INFO kablam!     Checking prime-decomposition v0.1.0 (/source/tasks/prime-decomposition)
Nov 07 04:36:48.154 INFO kablam!     Checking bitmap v0.1.0 (/source/tasks/bitmap)
Nov 07 04:36:48.159 INFO kablam!     Checking run-length-encoding v0.1.0 (/source/tasks/run-length-encoding)
Nov 07 04:36:48.159 INFO kablam!     Checking entropy v0.1.0 (/source/tasks/entropy)
Nov 07 04:36:48.160 INFO kablam!     Checking aks-test-for-primes v0.1.0 (/source/tasks/aks-test-for-primes)
Nov 07 04:36:48.160 INFO kablam!     Checking menu v0.1.0 (/source/tasks/menu)
Nov 07 04:36:49.826 INFO kablam!     Checking for-with-a-specified-step v0.1.0 (/source/tasks/loops/for-with-a-specified-step)
Nov 07 04:36:51.171 INFO kablam!     Checking ackermann-function v0.1.0 (/source/tasks/ackermann-function)
Nov 07 04:36:51.209 INFO kablam!     Checking sierpinski-triangle v0.1.0 (/source/tasks/sierpinski-triangle)
Nov 07 04:36:51.800 INFO kablam!     Checking palindrome-detection v0.1.0 (/source/tasks/palindrome-detection)
Nov 07 04:36:51.804 INFO kablam!     Checking zero-to-the-zero-power v0.1.0 (/source/tasks/zero-to-the-zero-power)
Nov 07 04:36:51.812 INFO kablam!     Checking towers-of-hanoi v0.1.0 (/source/tasks/towers-of-hanoi)
Nov 07 04:36:51.828 INFO kablam!     Checking continue v0.1.0 (/source/tasks/loops/continue)
Nov 07 04:36:52.196 INFO kablam! warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Nov 07 04:36:52.196 INFO kablam!  --> tasks/loops/for-with-a-specified-step/src/main.rs:1:12
Nov 07 04:36:52.196 INFO kablam!   |
Nov 07 04:36:52.196 INFO kablam! 1 | #![feature(iterator_step_by)]
Nov 07 04:36:52.196 INFO kablam!   |            ^^^^^^^^^^^^^^^^
Nov 07 04:36:52.196 INFO kablam!   |
Nov 07 04:36:52.196 INFO kablam!   = note: #[warn(stable_features)] on by default
Nov 07 04:36:52.196 INFO kablam! 
Nov 07 04:36:52.232 INFO kablam!     Checking continued-fraction v0.1.0 (/source/tasks/continued-fraction)
Nov 07 04:36:52.873 INFO kablam! warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Nov 07 04:36:52.873 INFO kablam!  --> tasks/sierpinski-triangle/src/main.rs:1:12
Nov 07 04:36:52.873 INFO kablam!   |
Nov 07 04:36:52.884 INFO kablam! 1 | #![feature(iterator_step_by)]
Nov 07 04:36:52.885 INFO kablam!   |            ^^^^^^^^^^^^^^^^
Nov 07 04:36:52.892 INFO kablam!   |
Nov 07 04:36:52.892 INFO kablam!   = note: #[warn(stable_features)] on by default
Nov 07 04:36:52.892 INFO kablam! 
Nov 07 04:36:53.036 INFO kablam!     Checking filter v0.1.0 (/source/tasks/filter)
Nov 07 04:36:53.076 INFO kablam!     Checking middle-three-digits v0.1.0 (/source/tasks/middle-three-digits)
Nov 07 04:36:53.912 INFO kablam!     Checking mutual-recursion v0.1.0 (/source/tasks/mutual-recursion)
Nov 07 04:36:54.134 INFO kablam!     Checking sequence-of-non-squares v0.1.0 (/source/tasks/sequence-of-non-squares)
Nov 07 04:36:54.328 INFO kablam!     Checking proper-divisors v0.1.0 (/source/tasks/proper-divisors)
Nov 07 04:36:54.448 INFO kablam!     Checking hash-join v0.1.0 (/source/tasks/hash-join)
Nov 07 04:36:54.629 INFO kablam!     Checking heapsort v0.1.0 (/source/tasks/sorting-algorithms/heapsort)
Nov 07 04:36:54.836 INFO kablam!     Checking jortsort v0.1.0 (/source/tasks/jortsort)
Nov 07 04:36:54.996 INFO kablam!     Checking obtain-a-y-or-n-response v0.1.0 (/source/tasks/keyboard-input/obtain-a-y-or-n-response)
Nov 07 04:36:55.789 INFO kablam!     Checking amicable-pairs v0.1.0 (/source/tasks/amicable-pairs)
Nov 07 04:36:55.789 INFO kablam!     Checking luhn-test-of-credit-card-numbers v0.1.0 (/source/tasks/luhn-test-of-credit-card-numbers)
Nov 07 04:36:55.836 INFO kablam!     Checking huffman-coding v0.1.0 (/source/tasks/huffman-coding)
Nov 07 04:36:55.949 INFO kablam!     Checking real-constants-and-functions v0.1.0 (/source/tasks/real-constants-and-functions)
Nov 07 04:36:55.963 INFO kablam!     Checking convert-seconds-to-compound-duration v0.1.0 (/source/tasks/convert-seconds-to-compound-duration)
Nov 07 04:36:56.573 INFO kablam!     Checking chat-server v0.1.0 (/source/tasks/chat-server)
Nov 07 04:36:56.614 INFO kablam!     Checking input-loop v0.1.0 (/source/tasks/input-loop)
Nov 07 04:36:56.979 INFO kablam!     Checking n-queens-problem v0.1.0 (/source/tasks/n-queens-problem)
Nov 07 04:36:56.990 INFO kablam!     Checking currying v0.1.0 (/source/tasks/currying)
Nov 07 04:36:57.092 INFO kablam!     Checking animation v0.1.0 (/source/tasks/animation)
Nov 07 04:36:57.944 INFO kablam!     Checking sort-an-array-of-composite-structures v0.1.0 (/source/tasks/sort-an-array-of-composite-structures)
Nov 07 04:36:58.044 INFO kablam!     Checking definition v0.1.0 (/source/tasks/queue/definition)
Nov 07 04:36:58.761 INFO kablam!     Checking metaprogramming v0.1.0 (/source/tasks/metaprogramming)
Nov 07 04:36:59.036 INFO kablam!     Checking sum-of-a-series v0.1.0 (/source/tasks/sum-of-a-series)
Nov 07 04:36:59.386 INFO kablam!     Checking the-twelve-days-of-christmas v0.1.0 (/source/tasks/the-twelve-days-of-christmas)
Nov 07 04:36:59.517 INFO kablam!     Checking truncate-a-file v0.1.0 (/source/tasks/truncate-a-file)
Nov 07 04:36:59.795 INFO kablam!     Checking infinity v0.1.0 (/source/tasks/infinity)
Nov 07 04:36:59.869 INFO kablam!     Checking delete-a-file v0.1.0 (/source/tasks/delete-a-file)
Nov 07 04:36:59.953 INFO kablam!     Checking flatten-a-list v0.1.0 (/source/tasks/flatten-a-list)
Nov 07 04:37:00.619 INFO kablam!     Checking even-or-odd v0.1.0 (/source/tasks/even-or-odd)
Nov 07 04:37:00.836 INFO kablam!     Checking sockets v0.1.0 (/source/tasks/sockets)
Nov 07 04:37:01.512 INFO kablam!     Checking string-matching v0.1.0 (/source/tasks/string-matching)
Nov 07 04:37:01.788 INFO kablam!     Checking generic-swap v0.1.0 (/source/tasks/generic-swap)
Nov 07 04:37:01.869 INFO kablam!     Checking file-input-output v0.1.0 (/source/tasks/file-input-output)
Nov 07 04:37:02.397 INFO kablam!     Checking hello-world-text v0.1.0 (/source/tasks/hello-world/text)
Nov 07 04:37:02.481 INFO kablam!     Checking sleep-sort v0.1.0 (/source/tasks/sorting-algorithms/sleep-sort)
Nov 07 04:37:02.920 INFO kablam!     Checking empty-directory v0.1.0 (/source/tasks/empty-directory)
Nov 07 04:37:02.964 INFO kablam!     Checking echo-server v0.1.0 (/source/tasks/echo-server)
Nov 07 04:37:03.849 INFO kablam!     Checking strip-comments-from-a-string v0.1.0 (/source/tasks/strip-comments-from-a-string)
Nov 07 04:37:03.855 INFO kablam!     Checking dining-philosophers v0.1.0 (/source/tasks/dining-philosophers)
Nov 07 04:37:04.384 INFO kablam!     Checking sort-an-integer-array v0.1.0 (/source/tasks/sort-an-integer-array)
Nov 07 04:37:04.609 INFO kablam!     Checking price-fraction v0.1.0 (/source/tasks/price-fraction)
Nov 07 04:37:04.852 INFO kablam!     Checking hough-transform v0.1.0 (/source/tasks/hough-transform)
Nov 07 04:37:04.968 INFO kablam!     Checking standard-deviation v0.1.0 (/source/tasks/standard-deviation)
Nov 07 04:37:05.348 INFO kablam!     Checking aliquot-sequence-classifications v0.1.0 (/source/tasks/aliquot-sequence-classifications)
Nov 07 04:37:05.435 INFO kablam!     Checking modular-inverse v0.1.0 (/source/tasks/modular-inverse)
Nov 07 04:37:05.691 INFO kablam!     Checking almost-prime v0.1.0 (/source/tasks/almost-prime)
Nov 07 04:37:05.691 INFO kablam!     Checking web-server v0.1.0 (/source/tasks/hello-world/web-server)
Nov 07 04:37:06.420 INFO kablam!     Checking crc-32 v0.1.0 (/source/tasks/crc-32)
Nov 07 04:37:06.660 INFO kablam!     Checking carmichael-3-strong-pseudoprimes v0.1.0 (/source/tasks/carmichael-3-strong-pseudoprimes)
Nov 07 04:37:06.940 INFO kablam!     Checking decode v0.1.0 (/source/tasks/roman-numerals/decode)
Nov 07 04:37:07.101 INFO kablam!     Checking mouse-position v0.1.0 (/source/tasks/mouse-position)
Nov 07 04:37:07.162 INFO kablam!     Checking fasta-format v0.1.0 (/source/tasks/fasta-format)
Nov 07 04:37:07.273 INFO kablam!     Checking catalan-numbers v0.1.0 (/source/tasks/catalan-numbers)
Nov 07 04:37:07.727 INFO kablam!     Checking sha-1 v0.1.0 (/source/tasks/sha-1)
Nov 07 04:37:08.162 INFO kablam!     Checking value-capture v0.1.0 (/source/tasks/closures/value-capture)
Nov 07 04:37:08.188 INFO kablam!     Checking newbie v0.1.0 (/source/tasks/hello-world/newbie)
Nov 07 04:37:08.576 INFO kablam!     Checking sum-and-product-of-an-array v0.1.0 (/source/tasks/sum-and-product-of-an-array)
Nov 07 04:37:09.228 INFO kablam!     Checking function-definition v0.1.0 (/source/tasks/function-definition)
Nov 07 04:37:09.632 INFO kablam!     Checking host-introspection v0.1.0 (/source/tasks/host-introspection)
Nov 07 04:37:09.712 INFO kablam!     Checking with-feedback-player v0.1.0 (/source/tasks/guess-the-number/with-feedback-player)
Nov 07 04:37:09.748 INFO kablam!     Checking greatest-element-of-a-list v0.1.0 (/source/tasks/greatest-element-of-a-list)
Nov 07 04:37:10.047 INFO kablam!     Checking sum-of-squares v0.1.0 (/source/tasks/sum-of-squares)
Nov 07 04:37:10.364 INFO kablam!     Checking count-in-octal v0.1.0 (/source/tasks/count-in-octal)
Nov 07 04:37:10.406 INFO kablam!     Checking infinite v0.1.0 (/source/tasks/loops/infinite)
Nov 07 04:37:10.889 INFO kablam!     Checking ethiopian-multiplication v0.1.0 (/source/tasks/ethiopian-multiplication)
Nov 07 04:37:11.224 INFO kablam!     Checking numerical-integration v0.1.0 (/source/tasks/numerical-integration)
Nov 07 04:37:11.873 INFO kablam!     Checking word-wrap v0.1.0 (/source/tasks/word-wrap)
Nov 07 04:37:12.237 INFO kablam!     Checking null-object v0.1.0 (/source/tasks/null-object)
Nov 07 04:37:12.624 INFO kablam!     Checking standard-error v0.1.0 (/source/tasks/hello-world/standard-error)
Nov 07 04:37:12.921 INFO kablam!     Checking accumulator-factory v0.1.0 (/source/tasks/accumulator-factory)
Nov 07 04:37:12.948 INFO kablam!     Checking hailstone-sequence v0.1.0 (/source/tasks/hailstone-sequence)
Nov 07 04:37:13.636 INFO kablam!     Checking integer-comparison v0.1.0 (/source/tasks/integer-comparison)
Nov 07 04:37:14.160 INFO kablam!     Checking four-bit-adder v0.1.0 (/source/tasks/four-bit-adder)
Nov 07 04:37:14.512 INFO kablam! warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Nov 07 04:37:14.512 INFO kablam!  --> tasks/loops/for-with-a-specified-step/src/main.rs:1:12
Nov 07 04:37:14.512 INFO kablam!   |
Nov 07 04:37:14.512 INFO kablam! 1 | #![feature(iterator_step_by)]
Nov 07 04:37:14.512 INFO kablam!   |            ^^^^^^^^^^^^^^^^
Nov 07 04:37:14.532 INFO kablam!   |
Nov 07 04:37:14.532 INFO kablam!   = note: #[warn(stable_features)] on by default
Nov 07 04:37:14.532 INFO kablam! 
Nov 07 04:37:14.704 INFO kablam!     Checking map-range v0.1.0 (/source/tasks/map-range)
Nov 07 04:37:14.830 INFO kablam!     Checking factors-of-an-integer v0.1.0 (/source/tasks/factors-of-an-integer)
Nov 07 04:37:15.676 INFO kablam!     Checking copy-a-string v0.1.0 (/source/tasks/copy-a-string)
Nov 07 04:37:15.780 INFO kablam!     Checking window-creation v0.1.0 (/source/tasks/window-creation)
Nov 07 04:37:17.170 INFO kablam!     Checking ulam-spiral-for-primes v0.1.0 (/source/tasks/ulam-spiral-for-primes)
Nov 07 04:37:17.749 INFO kablam!     Checking self-describing_numbers v0.1.0 (/source/tasks/self-describing-numbers)
Nov 07 04:37:18.380 INFO kablam!     Checking checkpoint-synchronization v0.1.0 (/source/tasks/checkpoint-synchronization)
Nov 07 04:37:18.556 INFO kablam!     Checking csv-data-manipulation v0.1.0 (/source/tasks/csv-data-manipulation)
Nov 07 04:37:19.881 INFO kablam!     Checking letter-frequency v0.1.0 (/source/tasks/letter-frequency)
Nov 07 04:37:20.387 INFO kablam! warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Nov 07 04:37:20.387 INFO kablam!  --> tasks/ulam-spiral-for-primes/src/main.rs:1:12
Nov 07 04:37:20.387 INFO kablam!   |
Nov 07 04:37:20.387 INFO kablam! 1 | #![feature(iterator_step_by)]
Nov 07 04:37:20.387 INFO kablam!   |            ^^^^^^^^^^^^^^^^
Nov 07 04:37:20.387 INFO kablam!   |
Nov 07 04:37:20.387 INFO kablam!   = note: #[warn(stable_features)] on by default
Nov 07 04:37:20.387 INFO kablam! 
Nov 07 04:37:20.540 INFO kablam!     Checking cocktail-sort v0.1.0 (/source/tasks/sorting-algorithms/cocktail-sort)
Nov 07 04:37:20.784 INFO kablam!     Checking traversal v0.1.0 (/source/tasks/singly-linked-list/traversal)
Nov 07 04:37:20.900 INFO kablam!     Checking call-an-object-method v0.1.0 (/source/tasks/call-an-object-method)
Nov 07 04:37:20.944 INFO kablam!     Checking mean-angle v0.1.0 (/source/tasks/averages/mean-angle)
Nov 07 04:37:21.080 INFO kablam!     Checking conways-game-of-life v0.1.0 (/source/tasks/conways-game-of-life)
Nov 07 04:37:22.087 INFO kablam!     Checking read-config-file v0.1.0 (/source/tasks/read-a-configuration-file)
Nov 07 04:37:22.761 INFO kablam!     Checking file-size v0.1.0 (/source/tasks/file-size)
Nov 07 04:37:22.845 INFO kablam!     Checking catamorphism v0.1.0 (/source/tasks/catamorphism)
Nov 07 04:37:22.897 INFO kablam!     Checking median v0.1.0 (/source/tasks/averages/median)
Nov 07 04:37:23.644 INFO kablam!     Checking search-a-list v0.1.0 (/source/tasks/search-a-list)
Nov 07 04:37:23.819 INFO kablam!     Checking magic-squares-of-odd-order v0.1.0 (/source/tasks/magic-squares-of-odd-order)
Nov 07 04:37:23.837 INFO kablam!     Checking nth v0.1.0 (/source/tasks/nth)
Nov 07 04:37:24.108 INFO kablam!     Checking i-before-e-except-after-c v0.1.0 (/source/tasks/i-before-e-except-after-c)
Nov 07 04:37:24.468 INFO kablam!     Checking remove-duplicate-elements v0.1.0 (/source/tasks/remove-duplicate-elements)
Nov 07 04:37:25.142 INFO kablam!     Checking arrays v0.1.0 (/source/tasks/arrays)
Nov 07 04:37:25.759 INFO kablam!     Checking case-sensitivity-of-identifiers v0.1.0 (/source/tasks/case-sensitivity-of-identifiers)
Nov 07 04:37:25.996 INFO kablam!     Checking zig-zag-matrix v0.1.0 (/source/tasks/zig-zag-matrix)
Nov 07 04:37:26.048 INFO kablam!     Checking bubble-sort v0.1.0 (/source/tasks/sorting-algorithms/bubble-sort)
Nov 07 04:37:26.128 INFO kablam!     Checking collections v0.1.0 (/source/tasks/collections)
Nov 07 04:37:26.697 INFO kablam!     Checking mode v0.1.0 (/source/tasks/averages/mode)
Nov 07 04:37:26.993 INFO kablam!     Checking binary-search v0.1.0 (/source/tasks/binary-search)
Nov 07 04:37:27.519 INFO kablam!     Checking set v0.1.0 (/source/tasks/set)
Nov 07 04:37:28.303 INFO kablam!     Checking vector-products v0.1.0 (/source/tasks/vector-products)
Nov 07 04:37:28.884 INFO kablam!     Checking combinations v0.1.0 (/source/tasks/combinations)
Nov 07 04:37:28.892 INFO kablam!     Checking integer v0.1.0 (/source/tasks/arithmetic/integer)
Nov 07 04:37:29.008 INFO kablam!     Checking for v0.1.0 (/source/tasks/loops/for)
Nov 07 04:37:29.052 INFO kablam!     Checking alignment v0.1.0 (/source/tasks/levenshtein-distance/alignment)
Nov 07 04:37:29.573 INFO kablam!     Checking generate-lower-case-ascii-alphabet v0.1.0 (/source/tasks/generate-lower-case-ascii-alphabet)
Nov 07 04:37:29.772 INFO kablam!     Checking associative-array-creation v0.1.0 (/source/tasks/associative-array/creation)
Nov 07 04:37:30.504 INFO kablam!     Checking array-length v0.1.0 (/source/tasks/array-length)
Nov 07 04:37:30.608 INFO kablam!     Checking command-line-arguments v0.1.0 (/source/tasks/command-line-arguments)
Nov 07 04:37:30.629 INFO kablam!     Checking short-circuit-evaluation v0.1.0 (/source/tasks/short-circuit-evaluation)
Nov 07 04:37:31.756 INFO kablam!     Checking repeat-a-string v0.1.0 (/source/tasks/repeat-a-string)
Nov 07 04:37:32.008 INFO kablam!     Checking merge-sort v0.1.0 (/source/tasks/sorting-algorithms/merge-sort)
Nov 07 04:37:32.920 INFO kablam!     Checking josephus-problem v0.1.0 (/source/tasks/josephus-problem)
Nov 07 04:37:32.957 INFO kablam!     Checking harshad-or-niven-series v0.1.0 (/source/tasks/harshad-or-niven-series)
Nov 07 04:37:33.732 INFO kablam!     Checking anagrams v0.1.0 (/source/tasks/anagrams)
Nov 07 04:37:33.780 INFO kablam!     Checking chinese-remainder-theorem v0.1.0 (/source/tasks/chinese-remainder-theorem)
Nov 07 04:37:33.824 INFO kablam!     Checking cartesian-product-of-two-or-more-lists v0.1.0 (/source/tasks/cartesian-product-of-two-or-more-lists)
Nov 07 04:37:34.204 INFO kablam!     Checking text v0.1.0 (/source/tasks/user-input/text)
Nov 07 04:37:35.144 INFO kablam!     Checking assertions v0.1.0 (/source/tasks/assertions)
Nov 07 04:37:35.160 INFO kablam!     Checking address-of-a-variable v0.1.0 (/source/tasks/address-of-a-variable)
Nov 07 04:37:35.232 INFO kablam!     Checking hash-from-two-arrays v0.1.0 (/source/tasks/hash-from-two-arrays)
Nov 07 04:37:35.584 INFO kablam!     Checking hofstadter-q-sequence v0.1.0 (/source/tasks/hofstadter-q-sequence)
Nov 07 04:37:35.751 INFO kablam!     Checking formatted-numeric-output v0.1.0 (/source/tasks/formatted-numeric-output)
Nov 07 04:37:36.356 INFO kablam!     Checking combinations-with-repetitions v0.1.0 (/source/tasks/combinations-with-repetitions)
Nov 07 04:37:36.984 INFO kablam!     Checking sieve-of-eratosthenes v0.1.0 (/source/tasks/sieve-of-eratosthenes)
Nov 07 04:37:37.312 INFO kablam!     Checking perfect-numbers v0.1.0 (/source/tasks/perfect-numbers)
Nov 07 04:37:37.373 INFO kablam!     Checking n-plus-one-half v0.1.0 (/source/tasks/loops/n-plus-one-half)
Nov 07 04:37:37.536 INFO kablam!     Checking root-mean-square v0.1.0 (/source/tasks/averages/root-mean-square)
Nov 07 04:37:38.032 INFO kablam!     Checking apply-a-callback-to-an-array v0.1.0 (/source/tasks/apply-a-callback-to-an-array)
Nov 07 04:37:38.864 INFO kablam!     Checking selection-sort v0.1.0 (/source/tasks/sorting-algorithms/selection-sort)
Nov 07 04:37:38.988 INFO kablam!     Checking parametric-polymorphism v0.1.0 (/source/tasks/parametric-polymorphism)
Nov 07 04:37:39.094 INFO kablam! warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Nov 07 04:37:39.094 INFO kablam!  --> tasks/sieve-of-eratosthenes/src/main.rs:1:12
Nov 07 04:37:39.094 INFO kablam!   |
Nov 07 04:37:39.094 INFO kablam! 1 | #![feature(iterator_step_by)]
Nov 07 04:37:39.094 INFO kablam!   |            ^^^^^^^^^^^^^^^^
Nov 07 04:37:39.094 INFO kablam!   |
Nov 07 04:37:39.094 INFO kablam!   = note: #[warn(stable_features)] on by default
Nov 07 04:37:39.094 INFO kablam! 
Nov 07 04:37:39.207 INFO kablam!     Checking enforced-immutability v0.1.0 (/source/tasks/enforced-immutability)
Nov 07 04:37:39.272 INFO kablam!     Checking 99-bottles-of-beer v0.1.0 (/source/tasks/99-bottles-of-beer)
Nov 07 04:37:40.108 INFO kablam!     Checking newline-omission v0.1.0 (/source/tasks/hello-world/newline-omission)
Nov 07 04:37:40.657 INFO kablam!     Checking y-combinator v0.1.0 (/source/tasks/y-combinator)
Nov 07 04:37:40.736 INFO kablam!     Checking pascals-triangle v0.1.0 (/source/tasks/pascals-triangle)
Nov 07 04:37:41.320 INFO kablam!     Checking execute-hq9-plus v0.1.0 (/source/tasks/execute-hq9-plus)
Nov 07 04:37:41.708 INFO kablam!     Checking doubly-linked-list-element-definition v0.1.0 (/source/tasks/doubly-linked-list/element-definition)
Nov 07 04:37:41.916 INFO kablam!     Checking eulers-sum-of-powers-conjecture v0.1.0 (/source/tasks/eulers-sum-of-powers-conjecture)
Nov 07 04:37:43.080 INFO kablam!     Checking string-interpolation-included v0.1.0 (/source/tasks/string-interpolation-included)
Nov 07 04:37:43.964 INFO kablam!     Checking factorial v0.1.0 (/source/tasks/factorial)
Nov 07 04:37:44.462 INFO kablam!     Checking arithmetic-geometric-mean v0.1.0 (/source/tasks/arithmetic-geometric-mean)
Nov 07 04:37:44.519 INFO kablam!     Checking s-expressions v0.1.0 (/source/tasks/s-expressions)
Nov 07 04:37:44.785 INFO kablam!     Checking vigenere-cipher v0.1.0 (/source/tasks/vigenere-cipher)
Nov 07 04:37:44.849 INFO kablam!     Checking benfords-law v0.1.0 (/source/tasks/benfords-law)
Nov 07 04:37:45.220 INFO kablam!     Checking comb-sort v0.1.0 (/source/tasks/sorting-algorithms/comb-sort)
Nov 07 04:37:45.406 INFO kablam!     Checking read-a-specific-line-from-a-file v0.1.0 (/source/tasks/read-a-specific-line-from-a-file)
Nov 07 04:37:45.932 INFO kablam!     Checking read-a-file-line-by-line v0.1.0 (/source/tasks/read-a-file-line-by-line)
Nov 07 04:37:46.005 INFO kablam!     Checking abc-problem v0.1.0 (/source/tasks/abc-problem)
Nov 07 04:37:46.533 INFO kablam!     Checking doubly-linked-list-element-insertion v0.1.0 (/source/tasks/doubly-linked-list/element-insertion)
Nov 07 04:37:47.621 INFO kablam!     Checking levenshtein-distance v0.1.0 (/source/tasks/levenshtein-distance)
Nov 07 04:37:47.736 INFO kablam!     Checking quine v0.1.0 (/source/tasks/quine)
Nov 07 04:37:48.536 INFO kablam!     Checking metered-concurrency v0.1.0 (/source/tasks/metered-concurrency)
Nov 07 04:37:48.844 INFO kablam!     Checking 0-1 v0.1.0 (/source/tasks/knapsack-problem/0-1)
Nov 07 04:37:49.849 INFO kablam!     Checking abundant-deficient-and-perfect-number-classifications v0.1.0 (/source/tasks/abundant-deficient-and-perfect-number-classifications)
Nov 07 04:37:49.889 INFO kablam!     Checking fibonacci-sequence v0.1.0 (/source/tasks/fibonacci-sequence)
Nov 07 04:37:50.314 INFO kablam!     Checking boolean-values v0.1.0 (/source/tasks/boolean-values)
Nov 07 04:37:50.904 INFO kablam!     Checking string-concatenation v0.1.0 (/source/tasks/string-concatenation)
Nov 07 04:37:51.459 INFO kablam!     Checking rot-13 v0.1.0 (/source/tasks/rot-13)
Nov 07 04:37:51.709 INFO kablam!     Checking execute-a-markov-algorithm v0.1.0 (/source/tasks/execute-a-markov-algorithm)
Nov 07 04:37:52.849 INFO kablam!     Checking loop-over-multiple-arrays-simultaneously v0.1.0 (/source/tasks/loop-over-multiple-arrays-simultaneously)
Nov 07 04:37:54.048 INFO kablam! error[E0599]: no function or associated item named `new` found for type `arena::TypedArena<_>` in the current scope
Nov 07 04:37:54.048 INFO kablam!    --> tasks/s-expressions/src/main.rs:292:26
Nov 07 04:37:54.048 INFO kablam!     |
Nov 07 04:37:54.048 INFO kablam! 292 |         ctx.arena = Some(TypedArena::new());
Nov 07 04:37:54.048 INFO kablam!     |                          ^^^^^^^^^^^^^^^ function or associated item not found in `arena::TypedArena<_>`
Nov 07 04:37:54.048 INFO kablam! 
Nov 07 04:37:54.091 INFO kablam! error: aborting due to previous error
Nov 07 04:37:54.091 INFO kablam! 
Nov 07 04:37:54.091 INFO kablam! For more information about this error, try `rustc --explain E0599`.
Nov 07 04:37:54.121 INFO kablam! error: Could not compile `s-expressions`.
Nov 07 04:37:54.121 INFO kablam! warning: build failed, waiting for other jobs to finish...
Nov 07 04:37:54.736 INFO kablam! error: build failed
Nov 07 04:37:54.739 INFO kablam! su: No module specific data is present
Nov 07 04:37:55.230 INFO running `"docker" "rm" "-f" "96e5e37def4353b7b6d6cf5fd190e45b6f1cf8ad4a5c8ef3c31c0f3736ece240"`
Nov 07 04:37:55.592 INFO blam! 96e5e37def4353b7b6d6cf5fd190e45b6f1cf8ad4a5c8ef3c31c0f3736ece240