[INFO] fetching crate pidgin 0.4.3...
[INFO] testing pidgin-0.4.3 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate pidgin 0.4.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate pidgin 0.4.3 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "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-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8499d8c30a4fa300b01a45feb069cddc2597ff339a22fc1ea64d15950af3a13d
[INFO] running `Command { std: "docker" "start" "-a" "8499d8c30a4fa300b01a45feb069cddc2597ff339a22fc1ea64d15950af3a13d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8499d8c30a4fa300b01a45feb069cddc2597ff339a22fc1ea64d15950af3a13d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8499d8c30a4fa300b01a45feb069cddc2597ff339a22fc1ea64d15950af3a13d", kill_on_drop: false }`
[INFO] [stdout] 8499d8c30a4fa300b01a45feb069cddc2597ff339a22fc1ea64d15950af3a13d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dbdb253c2313347151241d821ef0c7017a11dec4a585a74ea705da0b4a863d6
[INFO] running `Command { std: "docker" "start" "-a" "8dbdb253c2313347151241d821ef0c7017a11dec4a585a74ea705da0b4a863d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling serde v1.0.126
[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 20.79s
[INFO] running `Command { std: "docker" "inspect" "8dbdb253c2313347151241d821ef0c7017a11dec4a585a74ea705da0b4a863d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dbdb253c2313347151241d821ef0c7017a11dec4a585a74ea705da0b4a863d6", kill_on_drop: false }`
[INFO] [stdout] 8dbdb253c2313347151241d821ef0c7017a11dec4a585a74ea705da0b4a863d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1cd0f0c22e5c15638a07de82284efac3d30539bfc394edc067e2f2cbf22aea1c
[INFO] running `Command { std: "docker" "start" "-a" "1cd0f0c22e5c15638a07de82284efac3d30539bfc394edc067e2f2cbf22aea1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling semver v1.0.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling half v1.7.1
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling clap v2.33.3
[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 walkdir v2.3.2
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling criterion v0.3.4
[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 21.80s
[INFO] running `Command { std: "docker" "inspect" "1cd0f0c22e5c15638a07de82284efac3d30539bfc394edc067e2f2cbf22aea1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cd0f0c22e5c15638a07de82284efac3d30539bfc394edc067e2f2cbf22aea1c", kill_on_drop: false }`
[INFO] [stdout] 1cd0f0c22e5c15638a07de82284efac3d30539bfc394edc067e2f2cbf22aea1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e3d928bef6c1f03bc1542ebcacd9f8860c407d2ddab594b217755c487fd2dda9
[INFO] running `Command { std: "docker" "start" "-a" "e3d928bef6c1f03bc1542ebcacd9f8860c407d2ddab594b217755c487fd2dda9", 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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] running 12 tests
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/pidgin-e288ad61ad8af81b)
[INFO] [stdout] test util::tests::one_level_char_class_nesting ... ok
[INFO] [stdout] test util::tests::char_and_p_named_char_class_is_not_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::single_characters_are_atomic ... ok
[INFO] [stdout] test util::tests::leading_slash_then_char_is_atomic ... ok
[INFO] [stdout] test util::tests::sequence_of_groups_is_not_atomic ... ok
[INFO] [stdout] test util::tests::group_is_atomic ... 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::one_level_group_nesting ... ok
[INFO] [stdout] test util::tests::sequence_of_char_class_is_not_atomic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/macro.rs (/opt/rustwide/target/debug/deps/macro-6595a582dbdb0e57)
[INFO] [stdout] 
[INFO] [stdout] running 51 tests
[INFO] [stdout] test foo_bar ... ok
[INFO] [stdout] test children ... ok
[INFO] [stdout] test namespace_collision ... ok
[INFO] [stdout] test complex_character_class_alternation ... ok
[INFO] [stdout] test common_suffix ... ok
[INFO] [stdout] test rule_example ... ok
[INFO] [stdout] test long_character_class ... ok
[INFO] [stdout] test regex_rule ... ok
[INFO] [stdout] test no_unicode ... ok
[INFO] [stdout] test rx ... ok
[INFO] [stdout] test simple_alternation ... ok
[INFO] [stdout] test common_prefix ... ok
[INFO] [stdout] test complex_character_class ... ok
[INFO] [stdout] test foo_bar_foo ... ok
[INFO] [stdout] test has_test ... ok
[INFO] [stdout] test foo_foo ... ok
[INFO] [stdout] test foo_plus_bar ... ok
[INFO] [stdout] test maybe_space ... ok
[INFO] [stdout] test matcher_serialization ... ok
[INFO] [stdout] test foo_at_least_2_bar ... ok
[INFO] [stdout] test deep_all_names ... ok
[INFO] [stdout] test small_repeat_ignored ... ok
[INFO] [stdout] test deep_name ... ok
[INFO] [stdout] test optional_space ... ok
[INFO] [stdout] test vec_rule_with_repetition ... ok
[INFO] [stdout] test foo_at_2_to_4_bar ... ok
[INFO] [stdout] test stingy ... ok
[INFO] [stdout] test foo_foo2 ... ok
[INFO] [stdout] test vec_rule_simple ... ok
[INFO] [stdout] test using_sub_rule ... ok
[INFO] [stdout] test word_bound_left ... ok
[INFO] [stdout] test rule_general_and_specific_b_flags ... ok
[INFO] [stdout] test foo_maybe_bar ... ok
[INFO] [stdout] test both_prefix_and_suffix ... ok
[INFO] [stdout] test foo_star_bar ... ok
[INFO] [stdout] test word_bound_right ... ok
[INFO] [stdout] test longer_repeat_found ... ok
[INFO] [stdout] test short_character_class ... ok
[INFO] [stdout] test parse_example ... ok
[INFO] [stdout] test multiple_definitions ... ok
[INFO] [stdout] test some_space ... ok
[INFO] [stdout] test rule_specific_flags ... ok
[INFO] [stdout] test rule_general_flags ... ok
[INFO] [stdout] test foreign_grammar ... ok
[INFO] [stdout] test stinginess ... ok
[INFO] [stdout] test rule_general_and_specific_flags ... ok
[INFO] [stdout] test complex_repeat ... ok
[INFO] [stdout] test optional_space_with_repetition ... ok
[INFO] [stderr]    Doc-tests pidgin
[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 0.42s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 39 tests
[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-625a8046bba0d067.rlib --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-f67718dd40129317.rlib --extern pidgin=/opt/rustwide/target/debug/deps/libpidgin-719b10382298c597.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-b12671d5996357d8.rlib --extern regex=/opt/rustwide/target/debug/deps/libregex-14edb7dff9ca13a5.rlib --extern serde=/opt/rustwide/target/debug/deps/libserde-a2d4a17cdfe48e3b.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-2573ec1970a9db3d.rlib --extern serde_regex=/opt/rustwide/target/debug/deps/libserde_regex-9a257bea9a71f54c.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "e3d928bef6c1f03bc1542ebcacd9f8860c407d2ddab594b217755c487fd2dda9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3d928bef6c1f03bc1542ebcacd9f8860c407d2ddab594b217755c487fd2dda9", kill_on_drop: false }`
[INFO] [stdout] e3d928bef6c1f03bc1542ebcacd9f8860c407d2ddab594b217755c487fd2dda9