[INFO] fetching crate pidgin 0.4.3...
[INFO] testing pidgin-0.4.3 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate pidgin 0.4.3 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate pidgin 0.4.3 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pidgin 0.4.3
[INFO] finished tweaking crates.io crate pidgin 0.4.3
[INFO] tweaked toml for crates.io crate pidgin 0.4.3 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c31175d6023ac2795bea33d3d34f9fa923779ae3ee373617d940e032ce68aaa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0c31175d6023ac2795bea33d3d34f9fa923779ae3ee373617d940e032ce68aaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c31175d6023ac2795bea33d3d34f9fa923779ae3ee373617d940e032ce68aaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c31175d6023ac2795bea33d3d34f9fa923779ae3ee373617d940e032ce68aaa", kill_on_drop: false }`
[INFO] [stdout] 0c31175d6023ac2795bea33d3d34f9fa923779ae3ee373617d940e032ce68aaa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 80491c4ea2fcc8353e20bbe5fe249e75fdd6a1d1eaff3d520fb46d6b7336b498
[INFO] running `Command { std: "docker" "start" "-a" "80491c4ea2fcc8353e20bbe5fe249e75fdd6a1d1eaff3d520fb46d6b7336b498", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_regex v1.1.0
[INFO] [stderr]    Compiling pidgin v0.4.3 (/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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.49s
[INFO] running `Command { std: "docker" "inspect" "80491c4ea2fcc8353e20bbe5fe249e75fdd6a1d1eaff3d520fb46d6b7336b498", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80491c4ea2fcc8353e20bbe5fe249e75fdd6a1d1eaff3d520fb46d6b7336b498", kill_on_drop: false }`
[INFO] [stdout] 80491c4ea2fcc8353e20bbe5fe249e75fdd6a1d1eaff3d520fb46d6b7336b498
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0f405504a5a5feb414d8987030d4508d89b48a408af9282703a853277ac2f2b3
[INFO] running `Command { std: "docker" "start" "-a" "0f405504a5a5feb414d8987030d4508d89b48a408af9282703a853277ac2f2b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling pidgin v0.4.3 (/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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 57.74s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/pidgin-70c129109521b828)
[INFO] [stderr]   Executable tests/macro.rs (/opt/rustwide/target/debug/deps/macro-d93962477fd9823c)
[INFO] running `Command { std: "docker" "inspect" "0f405504a5a5feb414d8987030d4508d89b48a408af9282703a853277ac2f2b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f405504a5a5feb414d8987030d4508d89b48a408af9282703a853277ac2f2b3", kill_on_drop: false }`
[INFO] [stdout] 0f405504a5a5feb414d8987030d4508d89b48a408af9282703a853277ac2f2b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5878826a6b87229bcfc08f92f00d4e49e4cee679838c973a30ddc7d49f9336ca
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5878826a6b87229bcfc08f92f00d4e49e4cee679838c973a30ddc7d49f9336ca", 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
[INFO] [stderr] warning: `pidgin` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/pidgin-70c129109521b828)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[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::two_chars_where_first_is_not_slash_non_atomic ... ok
[INFO] [stdout] test util::tests::simple_char_class_with_escape_is_atomic ... ok
[INFO] [stdout] test util::tests::sequence_of_char_class_is_not_atomic ... ok
[INFO] [stdout] test util::tests::simple_char_class_is_atomic ... ok
[INFO] [stdout] test util::tests::single_characters_are_atomic ... ok
[INFO] [stdout] test util::tests::one_level_char_class_nesting ... ok
[INFO] [stdout] test util::tests::p_named_char_class_is_atomic ... ok
[INFO] [stderr]      Running tests/macro.rs (/opt/rustwide/target/debug/deps/macro-d93962477fd9823c)
[INFO] [stdout] test util::tests::char_and_p_named_char_class_is_not_atomic ... ok
[INFO] [stdout] test util::tests::one_level_group_nesting ... ok
[INFO] [stdout] test util::tests::sequence_of_groups_is_not_atomic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 51 tests
[INFO] [stdout] test children ... ok
[INFO] [stdout] test complex_character_class ... ok
[INFO] [stdout] test common_prefix ... ok
[INFO] [stdout] test common_suffix ... ok
[INFO] [stdout] test complex_character_class_alternation ... ok
[INFO] [stdout] test both_prefix_and_suffix ... ok
[INFO] [stdout] test long_character_class ... ok
[INFO] [stdout] test foo_at_2_to_4_bar ... ok
[INFO] [stdout] test has_test ... ok
[INFO] [stdout] test foo_bar ... ok
[INFO] [stdout] test complex_repeat ... ok
[INFO] [stdout] test foo_foo ... ok
[INFO] [stdout] test foo_star_bar ... ok
[INFO] [stdout] test foo_at_least_2_bar ... ok
[INFO] [stdout] test maybe_space ... ok
[INFO] [stdout] test foo_maybe_bar ... ok
[INFO] [stdout] test foo_plus_bar ... ok
[INFO] [stdout] test longer_repeat_found ... ok
[INFO] [stdout] test foo_foo2 ... ok
[INFO] [stdout] test matcher_serialization ... ok
[INFO] [stdout] test no_unicode ... ok
[INFO] [stdout] test multiple_definitions ... ok
[INFO] [stdout] test optional_space ... ok
[INFO] [stdout] test optional_space_with_repetition ... ok
[INFO] [stdout] test rule_example ... ok
[INFO] [stdout] test namespace_collision ... ok
[INFO] [stdout] test rule_general_and_specific_b_flags ... ok
[INFO] [stdout] test rule_general_and_specific_flags ... ok
[INFO] [stdout] test rx ... ok
[INFO] [stdout] test deep_all_names ... ok
[INFO] [stdout] test deep_name ... ok
[INFO] [stdout] test stingy ... ok
[INFO] [stdout] test small_repeat_ignored ... ok
[INFO] [stdout] test regex_rule ... ok
[INFO] [stdout] test stinginess ... ok
[INFO] [stdout] test vec_rule_with_repetition ... ok
[INFO] [stdout] test foreign_grammar ... ok
[INFO] [stdout] test simple_alternation ... ok
[INFO] [stdout] test some_space ... ok
[INFO] [stdout] test short_character_class ... ok
[INFO] [stdout] test word_bound_right ... ok
[INFO] [stdout] test word_bound_left ... ok
[INFO] [stdout] test foo_bar_foo ... ok
[INFO] [stdout] test rule_specific_flags ... ok
[INFO] [stdout] test rule_general_flags ... ok
[INFO] [stdout] test vec_rule_simple ... ok
[INFO] [stdout] test parse_example ... ok
[INFO] [stdout] test using_sub_rule ... ok
[INFO] [stdout] test complex_example ... ok
[INFO] [stdout] test messing_about ... ok
[INFO] [stdout] test rx_example ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 51 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.37s
[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::matcher (line 45) ... ok
[INFO] [stdout] test src/grammar.rs - grammar::Grammar::rx (line 234) ... ok
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name pidgin --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern criterion=/opt/rustwide/target/debug/deps/libcriterion-8b437791ce175174.rlib --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-86422d76b8bd90ed.rlib --extern pidgin=/opt/rustwide/target/debug/deps/libpidgin-9306f4825c1d0796.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-dd0ce798a0219d3a.rlib --extern regex=/opt/rustwide/target/debug/deps/libregex-dc665b958b1337b2.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-ab1c4be75e23004b.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-175bcdf87a041875.rlib --extern serde_regex=/opt/rustwide/target/debug/deps/libserde_regex-1a29c266ceb10b1e.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "5878826a6b87229bcfc08f92f00d4e49e4cee679838c973a30ddc7d49f9336ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5878826a6b87229bcfc08f92f00d4e49e4cee679838c973a30ddc7d49f9336ca", kill_on_drop: false }`
[INFO] [stdout] 5878826a6b87229bcfc08f92f00d4e49e4cee679838c973a30ddc7d49f9336ca