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Fix compiler error with recursive types on recursive templates by using dyn instead of plain generic bounds#726

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GuillaumeGomez merged 2 commits intoaskama-rs:mainfrom
GuillaumeGomez:recursive-template
Apr 11, 2026
Merged

Fix compiler error with recursive types on recursive templates by using dyn instead of plain generic bounds#726
GuillaumeGomez merged 2 commits intoaskama-rs:mainfrom
GuillaumeGomez:recursive-template

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@GuillaumeGomez GuillaumeGomez commented Apr 11, 2026

Fixes #393.

@GuillaumeGomez GuillaumeGomez merged commit 5d38d64 into askama-rs:main Apr 11, 2026
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@GuillaumeGomez GuillaumeGomez deleted the recursive-template branch April 11, 2026 13:42
@Kijewski
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Kijewski commented Apr 11, 2026

Did you benchmark the change? I fear that dynamic method calls could have an extreme impact.

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GuillaumeGomez commented Apr 11, 2026

I didn't. Are you worried about runtime or compile-time?

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GuillaumeGomez commented Apr 11, 2026

So I ran cargo bench with this PR commits first, then again without these commits, here's the output without these commits:

$ cargo bench
   Compiling askama_derive v0.15.6 (/home/imperio/rust/askama/askama_derive)
   Compiling askama_testing v0.0.0 (/home/imperio/rust/askama/testing)
   Compiling askama_macros v0.15.6 (/home/imperio/rust/askama/askama_macros)
   Compiling askama v0.15.6 (/home/imperio/rust/askama/askama)
   Compiling clippy_test v0.0.0 (/home/imperio/rust/askama/testing/tests/clippy_lints)
    Finished `bench` profile [optimized] target(s) in 10.02s
     Running unittests src/lib.rs (target/release/deps/askama-8b9800ead2c7494d)

running 35 tests
test filters::alloc::tests::test_capitalize ... ignored
test filters::alloc::tests::test_lower ... ignored
test filters::alloc::tests::test_title ... ignored
test filters::alloc::tests::test_trim ... ignored
test filters::alloc::tests::test_upper ... ignored
test filters::core::tests::test_center ... ignored
test filters::core::tests::test_join ... ignored
test filters::core::tests::test_linebreaks ... ignored
test filters::core::tests::test_linebreaksbr ... ignored
test filters::core::tests::test_paragraphbreaks ... ignored
test filters::core::tests::test_wordcount ... ignored
test filters::core::tests::test_wordcount_on_partial_input ... ignored
test filters::default::test_default_filterable ... ignored
test filters::escape::test_escape ... ignored
test filters::escape::test_html_safe_marker ... ignored
test filters::humansize::test_filesizeformat_edgecases ... ignored
test filters::humansize::test_filesizeformat_prec2 ... ignored
test filters::humansize::test_filesizeformat_prec3 ... ignored
test filters::indent::tests::test_indent ... ignored
test filters::indent::tests::test_indent_chunked ... ignored
test filters::indent::tests::test_indent_complicated ... ignored
test filters::indent::tests::test_indent_str ... ignored
test filters::json::tests::test_pretty ... ignored
test filters::json::tests::test_ugly ... ignored
test filters::std::test::test_unique ... ignored
test filters::urlencode::test_urlencoding ... ignored
test html::test_simple_html_string_escaping ... ignored
test tests::dyn_template ... ignored
test values::tests::values_deque ... ignored
test values::tests::values_list ... ignored
test values::tests::values_on_btreemap ... ignored
test values::tests::values_on_hashmap ... ignored
test values::tests::values_on_slice ... ignored
test values::tests::values_on_tuple ... ignored
test values::tests::values_vec ... ignored

test result: ok. 0 passed; 0 failed; 35 ignored; 0 measured; 0 filtered out; finished in 0.00s

     Running benches/escape.rs (target/release/deps/escape-ef1e17fcd7853657)
Gnuplot not found, using plotters backend
Escaping                time:   [3.9633 µs 3.9693 µs 3.9766 µs]
                        change: [−1.1444% −0.8467% −0.6025%] (p = 0.00 < 0.05)
                        Change within noise threshold.
Found 9 outliers among 100 measurements (9.00%)
  5 (5.00%) high mild
  4 (4.00%) high severe

     Running benches/to-json.rs (target/release/deps/to_json-614846bccf48ab43)
Gnuplot not found, using plotters backend
escape JSON             time:   [7.8086 µs 7.8135 µs 7.8190 µs]
                        change: [+3.9057% +4.0812% +4.2720%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 8 outliers among 100 measurements (8.00%)
  6 (6.00%) high mild
  2 (2.00%) high severe

escape JSON (pretty)    time:   [7.8522 µs 7.8681 µs 7.8950 µs]
                        change: [−6.9580% −6.6290% −6.3133%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 5 outliers among 100 measurements (5.00%)
  1 (1.00%) high mild
  4 (4.00%) high severe

escape JSON for HTML    time:   [12.845 µs 12.857 µs 12.874 µs]
                        change: [+4.9147% +5.2359% +5.5730%] (p = 0.00 < 0.05)
                        Performance has regressed.
Found 9 outliers among 100 measurements (9.00%)
  4 (4.00%) high mild
  5 (5.00%) high severe

Benchmarking escape JSON for HTML (pretty): Collecting 100 samples in estimated 5.0497 s (404k iterationescape JSON for HTML (pretty)
                        time:   [12.461 µs 12.469 µs 12.480 µs]
                        change: [−1.9126% −0.8235% +1.0241%] (p = 0.34 > 0.05)
                        No change in performance detected.
Found 9 outliers among 100 measurements (9.00%)
  4 (4.00%) high mild
  5 (5.00%) high severe

     Running unittests src/lib.rs (target/release/deps/askama_derive-a51cc54373daf6c8)

running 44 tests
test config::tests::add_syntax ... ignored
test config::tests::add_syntax_two ... ignored
test config::tests::duplicated_syntax_name_on_list - should panic ... ignored
test config::tests::escape_modes ... ignored
test config::tests::find_absolute ... ignored
test config::tests::find_relative ... ignored
test config::tests::find_relative_nonexistent - should panic ... ignored
test config::tests::find_relative_sub ... ignored
test config::tests::illegal_delimiters ... ignored
test config::tests::is_not_exist_default_syntax - should panic ... ignored
test config::tests::longer_delimiters ... ignored
test config::tests::test_config_dirs ... ignored
test config::tests::test_default_config ... ignored
test config::tests::test_whitespace_in_template ... ignored
test config::tests::test_whitespace_parsing ... ignored
test config::tests::use_default_at_syntax_name - should panic ... ignored
test generator::helpers::paths::test_diff_paths ... ignored
test html::test_simple_html_string_escaping ... ignored
test input::get_source ... ignored
test tests::check_bool_conditions ... ignored
test tests::check_escaping_at_compile_time ... ignored
test tests::check_expr_ungrouping ... ignored
test tests::check_if_let ... ignored
test tests::check_if_let_chain ... ignored
test tests::check_includes_only_once ... ignored
test tests::check_is_defined ... ignored
test tests::check_size_hint ... ignored
test tests::extends_with_whitespace_control ... ignored
test tests::fuzzed_0b85 ... ignored
test tests::fuzzed_comparator_chain ... ignored
test tests::regression_tests_span_change ... ignored
test tests::test_bare_cr_doc_comment ... ignored
test tests::test_code_in_comment ... ignored
test tests::test_compound_assignment ... ignored
test tests::test_concat ... ignored
test tests::test_filter_with_path ... ignored
test tests::test_generated_with_error ... ignored
test tests::test_macro_call_raw_prefix_without_data ... ignored
test tests::test_macro_call_reserved_prefix ... ignored
test tests::test_macro_call_valid_raw_cstring ... ignored
test tests::test_macro_calls_need_proper_tokens ... ignored
test tests::test_macro_names_that_need_escaping ... ignored
test tests::test_pluralize ... ignored
test tests::test_with_config ... ignored

test result: ok. 0 passed; 0 failed; 44 ignored; 0 measured; 0 filtered out; finished in 0.00s

     Running benches/complex-expression.rs (target/release/deps/complex_expression-3f68023ac62a523e)
Gnuplot not found, using plotters backend
range ops/x1            time:   [53.537 µs 53.673 µs 53.810 µs]
                        thrpt:  [18.584 Kelem/s 18.631 Kelem/s 18.679 Kelem/s]
                        thrpt:  [471.86 KiB/s 473.06 KiB/s 474.26 KiB/s]
                 change:
                        time:   [+37206% +37543% +37875%] (p = 0.00 < 0.05)
                        thrpt:  [−99.737% −99.734% −99.732%]
                        Performance has regressed.
Found 4 outliers among 100 measurements (4.00%)
  1 (1.00%) high mild
  3 (3.00%) high severe
range ops/x10           time:   [57.470 µs 57.589 µs 57.689 µs]
                        thrpt:  [173.34 Kelem/s 173.64 Kelem/s 174.00 Kelem/s]
                        thrpt:  [1.4052 MiB/s 1.4076 MiB/s 1.4105 MiB/s]
                 change:
                        time:   [+40692% +41486% +42109%] (p = 0.00 < 0.05)
                        thrpt:  [−99.763% −99.760% −99.755%]
                        Performance has regressed.
Found 1 outliers among 100 measurements (1.00%)
  1 (1.00%) high severe
range ops/x100          time:   [67.967 µs 68.275 µs 68.527 µs]
                        thrpt:  [1.4593 Melem/s 1.4647 Melem/s 1.4713 Melem/s]
                        thrpt:  [10.577 MiB/s 10.616 MiB/s 10.664 MiB/s]
                 change:
                        time:   [+43655% +44036% +44380%] (p = 0.00 < 0.05)
                        thrpt:  [−99.775% −99.773% −99.771%]
                        Performance has regressed.
Found 1 outliers among 100 measurements (1.00%)
  1 (1.00%) high mild

mult ops/x1             time:   [55.462 µs 55.586 µs 55.690 µs]
                        thrpt:  [17.956 Kelem/s 17.990 Kelem/s 18.030 Kelem/s]
                        thrpt:  [403.32 KiB/s 404.07 KiB/s 404.98 KiB/s]
                 change:
                        time:   [+38723% +39340% +40217%] (p = 0.00 < 0.05)
                        thrpt:  [−99.752% −99.746% −99.742%]
                        Performance has regressed.
Found 2 outliers among 100 measurements (2.00%)
  2 (2.00%) high severe
mult ops/x10            time:   [57.541 µs 57.922 µs 58.383 µs]
                        thrpt:  [171.28 Kelem/s 172.65 Kelem/s 173.79 Kelem/s]
                        thrpt:  [1.1271 MiB/s 1.1361 MiB/s 1.1436 MiB/s]
                 change:
                        time:   [+41156% +41586% +42065%] (p = 0.00 < 0.05)
                        thrpt:  [−99.763% −99.760% −99.758%]
                        Performance has regressed.
Found 4 outliers among 100 measurements (4.00%)
  3 (3.00%) high mild
  1 (1.00%) high severe
mult ops/x100           time:   [66.935 µs 67.197 µs 67.426 µs]
                        thrpt:  [1.4831 Melem/s 1.4882 Melem/s 1.4940 Melem/s]
                        thrpt:  [8.6278 MiB/s 8.6573 MiB/s 8.6911 MiB/s]
                 change:
                        time:   [+44223% +44585% +44943%] (p = 0.00 < 0.05)
                        thrpt:  [−99.778% −99.776% −99.774%]
                        Performance has regressed.
Found 1 outliers among 100 measurements (1.00%)
  1 (1.00%) high severe

mixed ops/x1            time:   [55.957 µs 56.101 µs 56.234 µs]
                        thrpt:  [17.783 Kelem/s 17.825 Kelem/s 17.871 Kelem/s]
                        thrpt:  [416.79 KiB/s 417.78 KiB/s 418.84 KiB/s]
                 change:
                        time:   [+39257% +39593% +39928%] (p = 0.00 < 0.05)
                        thrpt:  [−99.750% −99.748% −99.746%]
                        Performance has regressed.
Found 2 outliers among 100 measurements (2.00%)
  1 (1.00%) high mild
  1 (1.00%) high severe
mixed ops/x10           time:   [57.169 µs 57.377 µs 57.544 µs]
                        thrpt:  [173.78 Kelem/s 174.29 Kelem/s 174.92 Kelem/s]
                        thrpt:  [1.4253 MiB/s 1.4294 MiB/s 1.4346 MiB/s]
                 change:
                        time:   [+40952% +41332% +41705%] (p = 0.00 < 0.05)
                        thrpt:  [−99.761% −99.759% −99.756%]
                        Performance has regressed.
Found 1 outliers among 100 measurements (1.00%)
  1 (1.00%) high mild
mixed ops/x100          time:   [68.079 µs 68.359 µs 68.589 µs]
                        thrpt:  [1.4580 Melem/s 1.4629 Melem/s 1.4689 Melem/s]
                        thrpt:  [10.206 MiB/s 10.240 MiB/s 10.282 MiB/s]
                 change:
                        time:   [+44126% +44483% +44809%] (p = 0.00 < 0.05)
                        thrpt:  [−99.777% −99.776% −99.774%]
                        Performance has regressed.

     Running benches/derive-template.rs (target/release/deps/derive_template-3d1cd954d98c3e8e)
Gnuplot not found, using plotters backend
synthetic/hello_world   time:   [76.713 µs 76.856 µs 76.986 µs]
                        thrpt:  [646.93 KiB/s 648.03 KiB/s 649.23 KiB/s]
                 change:
                        time:   [+4.3907% +4.8412% +5.2399%] (p = 0.00 < 0.05)
                        thrpt:  [−4.9790% −4.6176% −4.2060%]
                        Performance has regressed.
Found 4 outliers among 100 measurements (4.00%)
  3 (3.00%) high mild
  1 (1.00%) high severe

librustdoc/item_info.html
                        time:   [101.37 µs 101.52 µs 101.70 µs]
                        thrpt:  [1.5473 MiB/s 1.5500 MiB/s 1.5523 MiB/s]
                 change:
                        time:   [+4.3633% +4.6430% +4.9133%] (p = 0.00 < 0.05)
                        thrpt:  [−4.6832% −4.4370% −4.1809%]
                        Performance has regressed.
Found 4 outliers among 100 measurements (4.00%)
  4 (4.00%) high severe
librustdoc/item_union.html
                        time:   [279.28 µs 279.48 µs 279.75 µs]
                        thrpt:  [3.5284 MiB/s 3.5317 MiB/s 3.5343 MiB/s]
                 change:
                        time:   [+1.9027% +2.3031% +2.6239%] (p = 0.00 < 0.05)
                        thrpt:  [−2.5568% −2.2512% −1.8672%]
                        Performance has regressed.
Found 8 outliers among 100 measurements (8.00%)
  1 (1.00%) high mild
  7 (7.00%) high severe
Benchmarking librustdoc/page.html: Warming up for 3.0000 s
Warning: Unable to complete 100 samples in 5.0s. You may wish to increase target time to 6.2s, enable flat sampling, or reduce sample count to 60.
librustdoc/page.html    time:   [1.1290 ms 1.1307 ms 1.1330 ms]
                        thrpt:  [5.4655 MiB/s 5.4762 MiB/s 5.4847 MiB/s]
                 change:
                        time:   [+1.6340% +1.8025% +1.9800%] (p = 0.00 < 0.05)
                        thrpt:  [−1.9415% −1.7706% −1.6077%]
                        Performance has regressed.
Found 9 outliers among 100 measurements (9.00%)
  3 (3.00%) high mild
  6 (6.00%) high severe
librustdoc/print_item.html
                        time:   [228.35 µs 228.71 µs 229.15 µs]
                        thrpt:  [4.1201 MiB/s 4.1281 MiB/s 4.1345 MiB/s]
                 change:
                        time:   [+2.2123% +2.3851% +2.5755%] (p = 0.00 < 0.05)
                        thrpt:  [−2.5109% −2.3296% −2.1644%]
                        Performance has regressed.
Found 14 outliers among 100 measurements (14.00%)
  7 (7.00%) high mild
  7 (7.00%) high severe
Benchmarking librustdoc/short_item_info.html: Collecting 100 samples in estimated 5.1635 s (20k iteratiolibrustdoc/short_item_info.html
                        time:   [231.98 µs 232.20 µs 232.44 µs]
                        thrpt:  [3.8977 MiB/s 3.9018 MiB/s 3.9054 MiB/s]
                 change:
                        time:   [+4.4379% +4.6456% +4.8760%] (p = 0.00 < 0.05)
                        thrpt:  [−4.6493% −4.4394% −4.2493%]
                        Performance has regressed.
Found 6 outliers among 100 measurements (6.00%)
  3 (3.00%) high mild
  3 (3.00%) high severe
librustdoc/sidebar.html time:   [307.10 µs 307.66 µs 308.37 µs]
                        thrpt:  [4.0019 MiB/s 4.0111 MiB/s 4.0185 MiB/s]
                 change:
                        time:   [+2.6322% +3.9088% +5.4986%] (p = 0.00 < 0.05)
                        thrpt:  [−5.2120% −3.7618% −2.5647%]
                        Performance has regressed.
Found 12 outliers among 100 measurements (12.00%)
  8 (8.00%) high mild
  4 (4.00%) high severe
librustdoc/source.html  time:   [179.88 µs 180.14 µs 180.44 µs]
                        thrpt:  [4.0854 MiB/s 4.0923 MiB/s 4.0983 MiB/s]
                 change:
                        time:   [+2.3701% +2.5748% +2.7409%] (p = 0.00 < 0.05)
                        thrpt:  [−2.6678% −2.5102% −2.3152%]
                        Performance has regressed.
Found 3 outliers among 100 measurements (3.00%)
  3 (3.00%) high mild
librustdoc/type_layout.html
                        time:   [235.26 µs 235.88 µs 236.60 µs]
                        thrpt:  [11.379 MiB/s 11.413 MiB/s 11.444 MiB/s]
                 change:
                        time:   [+0.7484% +1.3831% +1.9803%] (p = 0.00 < 0.05)
                        thrpt:  [−1.9418% −1.3642% −0.7428%]
                        Change within noise threshold.
Found 11 outliers among 100 measurements (11.00%)
  3 (3.00%) high mild
  8 (8.00%) high severe
Benchmarking librustdoc/type_layout_size.html: Collecting 100 samples in estimated 5.5072 s (45k iteratilibrustdoc/type_layout_size.html
                        time:   [108.70 µs 108.81 µs 108.94 µs]
                        thrpt:  [2.4861 MiB/s 2.4891 MiB/s 2.4917 MiB/s]
                 change:
                        time:   [−2.1959% −0.6428% +0.7434%] (p = 0.42 > 0.05)
                        thrpt:  [−0.7379% +0.6470% +2.2452%]
                        No change in performance detected.
Found 2 outliers among 100 measurements (2.00%)
  1 (1.00%) high mild
  1 (1.00%) high severe

     Running unittests src/lib.rs (target/release/deps/askama_escape-17be71037f6ee21c)

running 1 test
test tests::test_escape ... ignored

test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s

     Running benches/all.rs (target/release/deps/all-ff41036871fb61b2)
Gnuplot not found, using plotters backend
escape_html             time:   [2.8245 µs 2.8272 µs 2.8302 µs]
                        change: [−0.5286% −0.3692% −0.2049%] (p = 0.00 < 0.05)
                        Change within noise threshold.
Found 6 outliers among 100 measurements (6.00%)
  2 (2.00%) high mild
  4 (4.00%) high severe

all/escape_html         time:   [2.8227 µs 2.8295 µs 2.8415 µs]
                        thrpt:  [1.2707 GiB/s 1.2761 GiB/s 1.2792 GiB/s]
                 change:
                        time:   [−2.0887% −1.6870% −1.2479%] (p = 0.00 < 0.05)
                        thrpt:  [+1.2637% +1.7160% +2.1333%]
                        Performance has improved.
Found 8 outliers among 100 measurements (8.00%)
  4 (4.00%) high mild
  4 (4.00%) high severe

     Running unittests src/lib.rs (target/release/deps/askama_macros-67441f3848b5a14d)

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

     Running unittests src/lib.rs (target/release/deps/askama_parser-3432b9e27d4f1d69)

running 55 tests
test test::test_char_lit ... ignored
test test::test_check_base_digits ... ignored
test test::test_is_rust_keyword ... ignored
test test::test_num_lit ... ignored
test test::test_str_lit ... ignored
test test::test_strip_common ... ignored
test tests::change_delimiters_parse_filter ... ignored
test tests::comparison_operators_cannot_be_chained ... ignored
test tests::extends_with_whitespace_control ... ignored
test tests::fuzzed_comment_depth ... ignored
test tests::fuzzed_deeply_tested_if_let ... ignored
test tests::fuzzed_excessive_filter_block ... ignored
test tests::fuzzed_excessive_syntax_lengths ... ignored
test tests::fuzzed_filter_recursion ... ignored
test tests::fuzzed_macro_no_end ... ignored
test tests::fuzzed_span_is_not_substring_of_source ... ignored
test tests::fuzzed_target_recursion ... ignored
test tests::fuzzed_unary_recursion ... ignored
test tests::fuzzed_unicode_slice ... ignored
test tests::let_set ... ignored
test tests::macro_calls_can_have_raw_prefixes ... ignored
test tests::macro_comments_in_macro_calls ... ignored
test tests::regression_tests_span_change ... ignored
test tests::test_associativity ... ignored
test tests::test_byte_literal_multi_byte ... ignored
test tests::test_excessive_call_depth ... ignored
test tests::test_expr_end_catastrophic_backtracking ... ignored
test tests::test_filter_with_path ... ignored
test tests::test_generics_parsing ... ignored
test tests::test_invalid_block - should panic ... ignored
test tests::test_isolated_cr_in_raw_string ... ignored
test tests::test_macro_call_illegal_raw_identifier ... ignored
test tests::test_macro_call_nested_comments ... ignored
test tests::test_missing_space_after_kw ... ignored
test tests::test_odd_calls ... ignored
test tests::test_parse_array ... ignored
test tests::test_parse_comments ... ignored
test tests::test_parse_const ... ignored
test tests::test_parse_filter ... ignored
test tests::test_parse_numbers ... ignored
test tests::test_parse_path ... ignored
test tests::test_parse_path_call ... ignored
test tests::test_parse_root_path ... ignored
test tests::test_parse_tuple ... ignored
test tests::test_parse_var ... ignored
test tests::test_parse_var_call ... ignored
test tests::test_precedence ... ignored
test tests::test_raw ... ignored
test tests::test_rust_macro ... ignored
test tests::test_try_reserved_raw_identifier ... ignored
test tests::test_unclosed_prefixed_string ... ignored
test tests::test_ws_splitter ... ignored
test tests::there_is_no_digit_two_in_a_binary_integer ... ignored
test tests::underscore_is_an_identifier ... ignored
test tests::unicode_delimiters_in_syntax ... ignored

test result: ok. 0 passed; 0 failed; 55 ignored; 0 measured; 0 filtered out; finished in 0.00s

     Running benches/from_str.rs (target/release/deps/from_str-57304279c211ec4a)
Gnuplot not found, using plotters backend
librustdoc/all          time:   [535.38 µs 535.84 µs 536.41 µs]
                        thrpt:  [26.325 MiB/s 26.353 MiB/s 26.376 MiB/s]
                 change:
                        time:   [−0.5793% −0.2984% −0.0722%] (p = 0.01 < 0.05)
                        thrpt:  [+0.0722% +0.2993% +0.5827%]
                        Change within noise threshold.
Found 9 outliers among 100 measurements (9.00%)
  4 (4.00%) high mild
  5 (5.00%) high severe
librustdoc/item_info    time:   [6.9802 µs 6.9865 µs 6.9934 µs]
                        thrpt:  [22.501 MiB/s 22.523 MiB/s 22.543 MiB/s]
                 change:
                        time:   [+0.1659% +0.3504% +0.5372%] (p = 0.00 < 0.05)
                        thrpt:  [−0.5343% −0.3492% −0.1656%]
                        Change within noise threshold.
Found 3 outliers among 100 measurements (3.00%)
  3 (3.00%) high mild
librustdoc/item_union   time:   [47.586 µs 47.780 µs 48.111 µs]
                        thrpt:  [20.516 MiB/s 20.658 MiB/s 20.743 MiB/s]
                 change:
                        time:   [+0.4259% +0.7254% +1.0823%] (p = 0.00 < 0.05)
                        thrpt:  [−1.0708% −0.7202% −0.4241%]
                        Change within noise threshold.
Found 13 outliers among 100 measurements (13.00%)
  3 (3.00%) high mild
  10 (10.00%) high severe
librustdoc/page         time:   [233.59 µs 234.20 µs 234.99 µs]
                        thrpt:  [26.351 MiB/s 26.440 MiB/s 26.509 MiB/s]
                 change:
                        time:   [−1.3290% −0.6065% +0.1951%] (p = 0.11 > 0.05)
                        thrpt:  [−0.1947% +0.6102% +1.3469%]
                        No change in performance detected.
Found 14 outliers among 100 measurements (14.00%)
  4 (4.00%) high mild
  10 (10.00%) high severe
librustdoc/print_item   time:   [24.369 µs 24.495 µs 24.691 µs]
                        thrpt:  [38.238 MiB/s 38.544 MiB/s 38.744 MiB/s]
                 change:
                        time:   [−1.1346% −0.4047% +0.3654%] (p = 0.31 > 0.05)
                        thrpt:  [−0.3641% +0.4063% +1.1476%]
                        No change in performance detected.
Found 15 outliers among 100 measurements (15.00%)
  5 (5.00%) high mild
  10 (10.00%) high severe
librustdoc/short_item_info
                        time:   [22.882 µs 22.899 µs 22.917 µs]
                        thrpt:  [39.533 MiB/s 39.565 MiB/s 39.594 MiB/s]
                 change:
                        time:   [−0.2338% +0.0946% +0.3448%] (p = 0.58 > 0.05)
                        thrpt:  [−0.3436% −0.0945% +0.2343%]
                        No change in performance detected.
Found 7 outliers among 100 measurements (7.00%)
  6 (6.00%) high mild
  1 (1.00%) high severe
librustdoc/sidebar      time:   [48.366 µs 48.408 µs 48.458 µs]
                        thrpt:  [25.466 MiB/s 25.493 MiB/s 25.515 MiB/s]
                 change:
                        time:   [−1.0961% −0.4972% −0.0836%] (p = 0.04 < 0.05)
                        thrpt:  [+0.0837% +0.4996% +1.1082%]
                        Change within noise threshold.
Found 9 outliers among 100 measurements (9.00%)
  2 (2.00%) low mild
  5 (5.00%) high mild
  2 (2.00%) high severe
librustdoc/source       time:   [17.443 µs 17.590 µs 17.883 µs]
                        thrpt:  [41.224 MiB/s 41.911 MiB/s 42.262 MiB/s]
                 change:
                        time:   [−0.7628% −0.1661% +0.5989%] (p = 0.69 > 0.05)
                        thrpt:  [−0.5954% +0.1664% +0.7686%]
                        No change in performance detected.
Found 13 outliers among 100 measurements (13.00%)
  3 (3.00%) high mild
  10 (10.00%) high severe
librustdoc/type_layout_size
                        time:   [9.5877 µs 9.6074 µs 9.6307 µs]
                        thrpt:  [28.123 MiB/s 28.191 MiB/s 28.249 MiB/s]
                 change:
                        time:   [−1.1551% −0.8192% −0.5381%] (p = 0.00 < 0.05)
                        thrpt:  [+0.5410% +0.8260% +1.1686%]
                        Change within noise threshold.
Found 17 outliers among 100 measurements (17.00%)
  5 (5.00%) high mild
  12 (12.00%) high severe
librustdoc/type_layout  time:   [42.143 µs 42.263 µs 42.495 µs]
                        thrpt:  [63.354 MiB/s 63.701 MiB/s 63.883 MiB/s]
                 change:
                        time:   [+1.3594% +1.8398% +2.6457%] (p = 0.00 < 0.05)
                        thrpt:  [−2.5775% −1.8066% −1.3411%]
                        Performance has regressed.
Found 15 outliers among 100 measurements (15.00%)
  2 (2.00%) low mild
  3 (3.00%) high mild
  10 (10.00%) high severe

     Running benches/parse-complex-expression.rs (target/release/deps/parse_complex_expression-1de733996a3d7e7b)
Gnuplot not found, using plotters backend
range ops/x1            time:   [139.21 ns 139.28 ns 139.38 ns]
                        thrpt:  [7.1748 Melem/s 7.1795 Melem/s 7.1834 Melem/s]
                        thrpt:  [177.90 MiB/s 178.02 MiB/s 178.12 MiB/s]
                 change:
                        time:   [−99.741% −99.739% −99.738%] (p = 0.00 < 0.05)
                        thrpt:  [+38134% +38275% +38444%]
                        Performance has improved.
Found 5 outliers among 100 measurements (5.00%)
  3 (3.00%) high mild
  2 (2.00%) high severe
range ops/x10           time:   [133.49 ns 133.64 ns 133.91 ns]
                        thrpt:  [74.677 Melem/s 74.830 Melem/s 74.912 Melem/s]
                        thrpt:  [605.35 MiB/s 606.59 MiB/s 607.25 MiB/s]
                 change:
                        time:   [−99.768% −99.766% −99.765%] (p = 0.00 < 0.05)
                        thrpt:  [+42477% +42709% +42920%]
                        Performance has improved.
Found 7 outliers among 100 measurements (7.00%)
  3 (3.00%) high mild
  4 (4.00%) high severe
range ops/x100          time:   [149.05 ns 149.28 ns 149.72 ns]
                        thrpt:  [667.91 Melem/s 669.89 Melem/s 670.93 Melem/s]
                        thrpt:  [4.7275 GiB/s 4.7415 GiB/s 4.7488 GiB/s]
                 change:
                        time:   [−99.780% −99.778% −99.777%] (p = 0.00 < 0.05)
                        thrpt:  [+44805% +45038% +45266%]
                        Performance has improved.
Found 4 outliers among 100 measurements (4.00%)
  1 (1.00%) high mild
  3 (3.00%) high severe

mult ops/x1             time:   [137.76 ns 138.24 ns 139.20 ns]
                        thrpt:  [7.1839 Melem/s 7.2338 Melem/s 7.2590 Melem/s]
                        thrpt:  [157.58 MiB/s 158.67 MiB/s 159.22 MiB/s]
                 change:
                        time:   [−99.757% −99.752% −99.749%] (p = 0.00 < 0.05)
                        thrpt:  [+39721% +40249% +41027%]
                        Performance has improved.
Found 8 outliers among 100 measurements (8.00%)
  4 (4.00%) high mild
  4 (4.00%) high severe
mult ops/x10            time:   [133.66 ns 133.83 ns 134.04 ns]
                        thrpt:  [74.605 Melem/s 74.721 Melem/s 74.815 Melem/s]
                        thrpt:  [490.93 MiB/s 491.69 MiB/s 492.31 MiB/s]
                 change:
                        time:   [−99.768% −99.766% −99.764%] (p = 0.00 < 0.05)
                        thrpt:  [+42334% +42600% +42915%]
                        Performance has improved.
Found 13 outliers among 100 measurements (13.00%)
  3 (3.00%) high mild
  10 (10.00%) high severe
mult ops/x100           time:   [147.12 ns 147.22 ns 147.36 ns]
                        thrpt:  [678.63 Melem/s 679.27 Melem/s 679.73 Melem/s]
                        thrpt:  [3.8553 GiB/s 3.8590 GiB/s 3.8616 GiB/s]
                 change:
                        time:   [−99.780% −99.779% −99.778%] (p = 0.00 < 0.05)
                        thrpt:  [+45016% +45176% +45351%]
                        Performance has improved.
Found 8 outliers among 100 measurements (8.00%)
  3 (3.00%) high mild
  5 (5.00%) high severe

mixed ops/x1            time:   [138.04 ns 138.18 ns 138.32 ns]
                        thrpt:  [7.2297 Melem/s 7.2368 Melem/s 7.2442 Melem/s]
                        thrpt:  [165.47 MiB/s 165.64 MiB/s 165.81 MiB/s]
                 change:
                        time:   [−99.753% −99.752% −99.752%] (p = 0.00 < 0.05)
                        thrpt:  [+40151% +40284% +40431%]
                        Performance has improved.
Found 3 outliers among 100 measurements (3.00%)
  2 (2.00%) high mild
  1 (1.00%) high severe
mixed ops/x10           time:   [133.62 ns 133.72 ns 133.86 ns]
                        thrpt:  [74.706 Melem/s 74.782 Melem/s 74.841 Melem/s]
                        thrpt:  [612.71 MiB/s 613.33 MiB/s 613.82 MiB/s]
                 change:
                        time:   [−99.765% −99.764% −99.763%] (p = 0.00 < 0.05)
                        thrpt:  [+42094% +42295% +42507%]
                        Performance has improved.
Found 8 outliers among 100 measurements (8.00%)
  3 (3.00%) high mild
  5 (5.00%) high severe
mixed ops/x100          time:   [149.19 ns 149.25 ns 149.32 ns]
                        thrpt:  [669.70 Melem/s 670.03 Melem/s 670.28 Melem/s]
                        thrpt:  [4.5780 GiB/s 4.5802 GiB/s 4.5820 GiB/s]
                 change:
                        time:   [−99.780% −99.779% −99.778%] (p = 0.00 < 0.05)
                        thrpt:  [+45043% +45179% +45323%]
                        Performance has improved.
Found 5 outliers among 100 measurements (5.00%)
  3 (3.00%) high mild
  2 (2.00%) high severe

     Running benches/all.rs (target/release/deps/all-33d66b703eb8ae3d)
Gnuplot not found, using plotters backend
Big table               time:   [97.103 µs 97.140 µs 97.183 µs]
                        change: [−46.236% −45.700% −45.401%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 12 outliers among 100 measurements (12.00%)
  4 (4.00%) low mild
  2 (2.00%) high mild
  6 (6.00%) high severe

Big table (fmt)         time:   [193.02 µs 193.31 µs 193.64 µs]
                        change: [−0.8056% −0.5790% −0.3152%] (p = 0.00 < 0.05)
                        Change within noise threshold.
Found 10 outliers among 100 measurements (10.00%)
  2 (2.00%) high mild
  8 (8.00%) high severe

Big table (io)          time:   [100.92 µs 100.97 µs 101.02 µs]
                        change: [−57.927% −57.869% −57.815%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 7 outliers among 100 measurements (7.00%)
  1 (1.00%) high mild
  6 (6.00%) high severe

Teams                   time:   [191.90 ns 192.59 ns 193.26 ns]
                        change: [−32.086% −31.888% −31.698%] (p = 0.00 < 0.05)
                        Performance has improved.

Teams (fmt)             time:   [439.34 ns 439.61 ns 439.91 ns]
                        change: [−0.1934% +0.3055% +0.7195%] (p = 0.20 > 0.05)
                        No change in performance detected.
Found 15 outliers among 100 measurements (15.00%)
  2 (2.00%) low mild
  3 (3.00%) high mild
  10 (10.00%) high severe

Teams (io)              time:   [308.25 ns 308.41 ns 308.60 ns]
                        change: [−32.762% −32.384% −32.166%] (p = 0.00 < 0.05)
                        Performance has improved.
Found 2 outliers among 100 measurements (2.00%)
  2 (2.00%) high severe

     Running unittests lib.rs (target/release/deps/clippy_test-16e9b5e55c63a16c)

running 1 test
test elidable_lifetime_names::test_output ... ignored

test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s

@GuillaumeGomez
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GuillaumeGomez commented Apr 11, 2026

Regressions and improvements.

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Recursive templates fail to render when the {{ child }} is escaped

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@GuillaumeGomez @Kijewski