[INFO] fetching crate regen 0.1.0...
[INFO] testing regen-0.1.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate regen 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate regen 0.1.0 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate regen 0.1.0
[INFO] finished tweaking crates.io crate regen 0.1.0
[INFO] tweaked toml for crates.io crate regen 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate regen 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", 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] a915d7a6891d425312a4f7887d422bac18e5967ba093534f6b86cf80c2732e0d
[INFO] running `Command { std: "docker" "start" "-a" "a915d7a6891d425312a4f7887d422bac18e5967ba093534f6b86cf80c2732e0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a915d7a6891d425312a4f7887d422bac18e5967ba093534f6b86cf80c2732e0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a915d7a6891d425312a4f7887d422bac18e5967ba093534f6b86cf80c2732e0d", kill_on_drop: false }`
[INFO] [stdout] a915d7a6891d425312a4f7887d422bac18e5967ba093534f6b86cf80c2732e0d
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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] 97ba2a17bae414a50bdcdd9bbccf283ab842c04962c641cba9f22a7abea8c777
[INFO] running `Command { std: "docker" "start" "-a" "97ba2a17bae414a50bdcdd9bbccf283ab842c04962c641cba9f22a7abea8c777", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling regen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.33s
[INFO] running `Command { std: "docker" "inspect" "97ba2a17bae414a50bdcdd9bbccf283ab842c04962c641cba9f22a7abea8c777", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97ba2a17bae414a50bdcdd9bbccf283ab842c04962c641cba9f22a7abea8c777", kill_on_drop: false }`
[INFO] [stdout] 97ba2a17bae414a50bdcdd9bbccf283ab842c04962c641cba9f22a7abea8c777
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f16744c8ef5a678a6c1e4b75cff987c1acb4e44fec951948cf8304a2bc86fd36
[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" "f16744c8ef5a678a6c1e4b75cff987c1acb4e44fec951948cf8304a2bc86fd36", kill_on_drop: false }`
[INFO] [stderr]    Compiling regen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `Command { std: "docker" "inspect" "f16744c8ef5a678a6c1e4b75cff987c1acb4e44fec951948cf8304a2bc86fd36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f16744c8ef5a678a6c1e4b75cff987c1acb4e44fec951948cf8304a2bc86fd36", kill_on_drop: false }`
[INFO] [stdout] f16744c8ef5a678a6c1e4b75cff987c1acb4e44fec951948cf8304a2bc86fd36
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", 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] cb83ddd468c91ad0c92d7688268676e3871ab3614407816538cc4926dcf8160f
[INFO] running `Command { std: "docker" "start" "-a" "cb83ddd468c91ad0c92d7688268676e3871ab3614407816538cc4926dcf8160f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/regen-160ac27158b4221a
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/regen-f242870abc733ea1
[INFO] [stdout] running 55 tests
[INFO] [stdout] test appending_iterators::tests::alternation_char_class ... ok
[INFO] [stdout] test appending_iterators::tests::alternation_concatenation ... ok
[INFO] [stdout] test appending_iterators::tests::alternation_resets ... ok
[INFO] [stdout] test appending_iterators::tests::alternation_reports_alt_element_counts ... ok
[INFO] [stdout] test appending_iterators::tests::byte_class_reports_element_count_of_one ... ok
[INFO] [stdout] test appending_iterators::tests::alternation_uses_all_values ... ok
[INFO] [stdout] test appending_iterators::tests::alternation_byte_class ... ok
[INFO] [stdout] test appending_iterators::tests::alternation_reports_alt_min_elements ... ok
[INFO] [stdout] test appending_iterators::tests::byte_literal_returns_element_count_in_bytes ... ok
[INFO] [stdout] test appending_iterators::tests::byte_class_uses_all_values ... ok
[INFO] [stdout] test appending_iterators::tests::byte_class_resets ... ok
[INFO] [stdout] test appending_iterators::tests::byte_literal_returns_min_elements_in_bytes ... ok
[INFO] [stdout] test appending_iterators::tests::char_class_reports_element_count_of_one ... ok
[INFO] [stdout] test appending_iterators::tests::char_class_reports_min_elements_of_one ... ok
[INFO] [stdout] test appending_iterators::tests::char_literal_returns_min_elements_in_chars ... ok
[INFO] [stdout] test appending_iterators::tests::char_class_resets ... ok
[INFO] [stdout] test appending_iterators::tests::char_literal_returns_element_count_in_chars ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_alternation ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_char_class ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_byte_class ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_reports_total_element_count ... ok
[INFO] [stdout] test appending_iterators::tests::empty_byte_class_returns_nothing ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_reports_total_min_elements ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_resets ... ok
[INFO] [stdout] test appending_iterators::tests::empty_char_class_returns_nothing ... ok
[INFO] [stdout] test appending_iterators::tests::empty_concatenation_returns_nothing ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_uses_all_values ... ok
[INFO] [stdout] test appending_iterators::tests::empty_repeat_returns_empty_string ... ok
[INFO] [stdout] test appending_iterators::tests::literal_resets ... ok
[INFO] [stdout] test appending_iterators::tests::literal_returns_one_value ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_char_class ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_alternation ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_reports_min_elements ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_reports_element_count ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_resets ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_uses_all_values ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_respects_max_element_hint ... ok
[INFO] [stdout] test appending_iterators::tests::empty_alternation_returns_nothing ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_with_zero_reports_zero_min_elements ... ok
[INFO] [stdout] test tests::concat ... ok
[INFO] [stdout] test tests::empty_returns_nothing ... ok
[INFO] [stdout] test tests::literal ... ok
[INFO] [stdout] test appending_iterators::tests::char_class_uses_all_values ... ok
[INFO] [stdout] test tests::max_length_with_alternation_branches_of_unequal_length ... ok
[INFO] [stdout] test tests::max_length_with_fixed_parts ... ok
[INFO] [stdout] test tests::repetition_range ... ok
[INFO] [stdout] test tests::repetition_range_exactly ... ok
[INFO] [stdout] test tests::repetition_zero_or_one ... ok
[INFO] [stdout] test tests::unfinished_alternation_branch_is_ignored ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_alternation_respects_max_element_hint ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_byte_class ... ok
[INFO] [stdout] test tests::alternation ... ok
[INFO] [stdout] test tests::byte_dot_all ... ok
[INFO] [stdout] test tests::class ... ok
[INFO] [stdout] test tests::max_length ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 55 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests regen
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - Generator::append_next (line 218) ... ok
[INFO] [stdout] test src/lib.rs - Generator::new_with_options (line 188) ... ok
[INFO] [stdout] test src/lib.rs - (line 30) ... ok
[INFO] [stdout] test src/lib.rs - (line 42) ... ok
[INFO] [stdout] test src/lib.rs - (line 57) ... ok
[INFO] [stdout] test src/lib.rs - Generator::new (line 175) ... ok
[INFO] [stdout] test src/lib.rs - (line 19) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cb83ddd468c91ad0c92d7688268676e3871ab3614407816538cc4926dcf8160f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb83ddd468c91ad0c92d7688268676e3871ab3614407816538cc4926dcf8160f", kill_on_drop: false }`
[INFO] [stdout] cb83ddd468c91ad0c92d7688268676e3871ab3614407816538cc4926dcf8160f