[INFO] fetching crate pidgin 0.4.4...
[INFO] testing pidgin-0.4.4 against master#9e136a30a965bf4e63f03095c57df7257bf96fd6 for pr-134530
[INFO] extracting crate pidgin 0.4.4 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate pidgin 0.4.4 on toolchain 9e136a30a965bf4e63f03095c57df7257bf96fd6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e136a30a965bf4e63f03095c57df7257bf96fd6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pidgin 0.4.4
[INFO] finished tweaking crates.io crate pidgin 0.4.4
[INFO] tweaked toml for crates.io crate pidgin 0.4.4 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e136a30a965bf4e63f03095c57df7257bf96fd6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 85 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.4.0 (available: v0.5.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e136a30a965bf4e63f03095c57df7257bf96fd6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9e136a30a965bf4e63f03095c57df7257bf96fd6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4dc66f956e4e1182bb2c3aed0cd5bc85e26c7ae3337e0a74976656874781ffdc
[INFO] running `Command { std: "docker" "start" "-a" "4dc66f956e4e1182bb2c3aed0cd5bc85e26c7ae3337e0a74976656874781ffdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4dc66f956e4e1182bb2c3aed0cd5bc85e26c7ae3337e0a74976656874781ffdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dc66f956e4e1182bb2c3aed0cd5bc85e26c7ae3337e0a74976656874781ffdc", kill_on_drop: false }`
[INFO] [stdout] 4dc66f956e4e1182bb2c3aed0cd5bc85e26c7ae3337e0a74976656874781ffdc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9e136a30a965bf4e63f03095c57df7257bf96fd6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6417429d79316f8d41dfc414f0c3461bd850c13b6894cd77aa8e0d5d1c48e12
[INFO] running `Command { std: "docker" "start" "-a" "e6417429d79316f8d41dfc414f0c3461bd850c13b6894cd77aa8e0d5d1c48e12", kill_on_drop: false }`
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling serde_derive v1.0.216
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling serde v1.0.216
[INFO] [stderr]    Compiling serde_regex v1.1.0
[INFO] [stderr]    Compiling pidgin v0.4.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pidgin.rs:601:38
[INFO] [stdout]     |
[INFO] [stdout] 601 |     fn find_character_classes(&self, mut phrases: Vec<Vec<Expression>>) -> Vec<Vec<Expression>> {
[INFO] [stdout]     |                                      ----^^^^^^^
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.50s
[INFO] running `Command { std: "docker" "inspect" "e6417429d79316f8d41dfc414f0c3461bd850c13b6894cd77aa8e0d5d1c48e12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6417429d79316f8d41dfc414f0c3461bd850c13b6894cd77aa8e0d5d1c48e12", kill_on_drop: false }`
[INFO] [stdout] e6417429d79316f8d41dfc414f0c3461bd850c13b6894cd77aa8e0d5d1c48e12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9e136a30a965bf4e63f03095c57df7257bf96fd6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a26eb29397aa8ffa0b2207a3961d34cfdcb5e6601bd4ad3002534a18babedc43
[INFO] running `Command { std: "docker" "start" "-a" "a26eb29397aa8ffa0b2207a3961d34cfdcb5e6601bd4ad3002534a18babedc43", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling serde_json v1.0.133
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pidgin.rs:601:38
[INFO] [stdout]     |
[INFO] [stdout] 601 |     fn find_character_classes(&self, mut phrases: Vec<Vec<Expression>>) -> Vec<Vec<Expression>> {
[INFO] [stdout]     |                                      ----^^^^^^^
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling criterion v0.4.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling pidgin v0.4.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/pidgin.rs:601:38
[INFO] [stdout]     |
[INFO] [stdout] 601 |     fn find_character_classes(&self, mut phrases: Vec<Vec<Expression>>) -> Vec<Vec<Expression>> {
[INFO] [stdout]     |                                      ----^^^^^^^
[INFO] [stdout]     |                                      |
[INFO] [stdout]     |                                      help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 17.43s
[INFO] running `Command { std: "docker" "inspect" "a26eb29397aa8ffa0b2207a3961d34cfdcb5e6601bd4ad3002534a18babedc43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a26eb29397aa8ffa0b2207a3961d34cfdcb5e6601bd4ad3002534a18babedc43", kill_on_drop: false }`
[INFO] [stdout] a26eb29397aa8ffa0b2207a3961d34cfdcb5e6601bd4ad3002534a18babedc43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9e136a30a965bf4e63f03095c57df7257bf96fd6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 17d9c989235ac5938f2e819ffa0ff53ec262a1a12b954c247164dc426fe93d20
[INFO] running `Command { std: "docker" "start" "-a" "17d9c989235ac5938f2e819ffa0ff53ec262a1a12b954c247164dc426fe93d20", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/pidgin.rs:601:38
[INFO] [stderr]     |
[INFO] [stderr] 601 |     fn find_character_classes(&self, mut phrases: Vec<Vec<Expression>>) -> Vec<Vec<Expression>> {
[INFO] [stderr]     |                                      ----^^^^^^^
[INFO] [stderr]     |                                      |
[INFO] [stderr]     |                                      help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `pidgin` (lib) generated 1 warning (run `cargo fix --lib -p pidgin` to apply 1 suggestion)
[INFO] [stderr] warning: `pidgin` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/pidgin-72314d9e2ffa38e1)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test util::tests::char_and_p_named_char_class_is_not_atomic ... ok
[INFO] [stdout] test util::tests::group_is_atomic ... ok
[INFO] [stdout] test util::tests::leading_slash_then_char_is_atomic ... ok
[INFO] [stdout] test util::tests::sequence_of_char_class_is_not_atomic ... ok
[INFO] [stdout] test util::tests::one_level_group_nesting ... ok
[INFO] [stdout] test util::tests::one_level_char_class_nesting ... ok
[INFO] [stdout] test util::tests::simple_char_class_is_atomic ... ok
[INFO] [stdout] test util::tests::p_named_char_class_is_atomic ... ok
[INFO] [stdout] test util::tests::sequence_of_groups_is_not_atomic ... ok
[INFO] [stdout] test util::tests::single_characters_are_atomic ... ok
[INFO] [stdout] test util::tests::simple_char_class_with_escape_is_atomic ... ok
[INFO] [stdout] test util::tests::two_chars_where_first_is_not_slash_non_atomic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/macro.rs (/opt/rustwide/target/debug/deps/macro-36c10d741eba4850)
[INFO] [stdout] 
[INFO] [stdout] running 51 tests
[INFO] [stdout] test common_suffix ... ok
[INFO] [stdout] test both_prefix_and_suffix ... ok
[INFO] [stdout] test children ... ok
[INFO] [stdout] test common_prefix ... ok
[INFO] [stdout] test complex_character_class_alternation ... ok
[INFO] [stdout] test complex_character_class ... ok
[INFO] [stdout] test foo_bar ... ok
[INFO] [stdout] test foo_at_2_to_4_bar ... ok
[INFO] [stdout] test foo_bar_foo ... ok
[INFO] [stdout] test complex_repeat ... ok
[INFO] [stdout] test foo_at_least_2_bar ... ok
[INFO] [stdout] test foo_foo ... ok
[INFO] [stdout] test foo_foo2 ... ok
[INFO] [stdout] test deep_name ... ok
[INFO] [stdout] test foo_plus_bar ... ok
[INFO] [stdout] test foo_star_bar ... ok
[INFO] [stdout] test foo_maybe_bar ... ok
[INFO] [stdout] test deep_all_names ... ok
[INFO] [stdout] test long_character_class ... ok
[INFO] [stdout] test matcher_serialization ... ok
[INFO] [stdout] test multiple_definitions ... ok
[INFO] [stdout] test has_test ... ok
[INFO] [stdout] test maybe_space ... ok
[INFO] [stdout] test optional_space ... ok
[INFO] [stdout] test longer_repeat_found ... ok
[INFO] [stdout] test no_unicode ... ok
[INFO] [stdout] test namespace_collision ... ok
[INFO] [stdout] test rule_example ... ok
[INFO] [stdout] test rule_general_and_specific_b_flags ... ok
[INFO] [stdout] test optional_space_with_repetition ... ok
[INFO] [stdout] test regex_rule ... ok
[INFO] [stdout] test rule_specific_flags ... ok
[INFO] [stdout] test rule_general_flags ... ok
[INFO] [stdout] test rule_general_and_specific_flags ... ok
[INFO] [stdout] test rx ... ok
[INFO] [stdout] test short_character_class ... ok
[INFO] [stdout] test simple_alternation ... ok
[INFO] [stdout] test small_repeat_ignored ... ok
[INFO] [stdout] test stinginess ... ok
[INFO] [stdout] test stingy ... ok
[INFO] [stdout] test using_sub_rule ... ok
[INFO] [stdout] test vec_rule_simple ... ok
[INFO] [stdout] test vec_rule_with_repetition ... ok
[INFO] [stdout] test some_space ... ok
[INFO] [stdout] test word_bound_left ... ok
[INFO] [stdout] test word_bound_right ... ok
[INFO] [stdout] test parse_example ... ok
[INFO] [stdout] test foreign_grammar ... ok
[INFO] [stdout] test complex_example ... ok
[INFO] [stdout] test rx_example ... ok
[INFO] [stdout] test messing_about ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 51 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.23s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests pidgin
[INFO] [stdout] 
[INFO] [stdout] running 39 tests
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] test src/grammar.rs - grammar::Grammar::rx (line 221) ... ok
[INFO] [stdout] test src/grammar.rs - grammar::Grammar::rx (line 234) ... ok
[INFO] [stdout] test src/grammar.rs - grammar::Grammar::matcher (line 45) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 107) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 128) ... ok
[INFO] [stdout] test src/grammar.rs - grammar::Grammar::rule (line 171) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 143) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 188) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 174) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 151) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 197) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 207) ... ok
[INFO] [stdout] test src/lib.rs - (line 26) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 233) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 281) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 246) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 262) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 217) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 295) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 310) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 428) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 371) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 389) ... ok
[INFO] [stdout] test src/matching.rs - matching::Match<'t>::all_names (line 391) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 328) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 344) ... ok
[INFO] [stdout] test src/matching.rs - matching::Match<'t>::as_str (line 249) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 402) ... ok
[INFO] [stdout] test src/matching.rs - matching::Match<'t>::children (line 321) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 75) ... ok
[INFO] [stdout] test src/matching.rs - matching::Match<'t>::end (line 285) ... ok
[INFO] [stdout] test src/matching.rs - matching::Match<'t>::rule (line 303) ... ok
[INFO] [stdout] test src/matching.rs - matching::Matcher::parse (line 34) ... ok
[INFO] [stdout] test src/matching.rs - matching::Match<'t>::has (line 418) ... ok
[INFO] [stdout] test src/matching.rs - matching::Match<'t>::name (line 354) ... ok
[INFO] [stdout] test src/matching.rs - matching::Match<'t>::start (line 267) ... ok
[INFO] [stdout] test src/matching.rs - matching::Matcher::is_match (line 115) ... ok
[INFO] [stdout] test src/macros.rs - macros::grammar (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 39 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 10.16s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "17d9c989235ac5938f2e819ffa0ff53ec262a1a12b954c247164dc426fe93d20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17d9c989235ac5938f2e819ffa0ff53ec262a1a12b954c247164dc426fe93d20", kill_on_drop: false }`
[INFO] [stdout] 17d9c989235ac5938f2e819ffa0ff53ec262a1a12b954c247164dc426fe93d20