[INFO] fetching crate regen 0.1.0...
[INFO] testing regen-0.1.0 against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] extracting crate regen 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate regen 0.1.0 on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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-2/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d39703fa44932303a1646714afa3821940075b5023475d38a80419d5cf914c7
[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" "9d39703fa44932303a1646714afa3821940075b5023475d38a80419d5cf914c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d39703fa44932303a1646714afa3821940075b5023475d38a80419d5cf914c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d39703fa44932303a1646714afa3821940075b5023475d38a80419d5cf914c7", kill_on_drop: false }`
[INFO] [stdout] 9d39703fa44932303a1646714afa3821940075b5023475d38a80419d5cf914c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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] b96cbb756f5628a6ba366027e5306dc03f187a790b5d7ec6f7ef1a617eb7301a
[INFO] running `Command { std: "docker" "start" "-a" "b96cbb756f5628a6ba366027e5306dc03f187a790b5d7ec6f7ef1a617eb7301a", 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 8.31s
[INFO] running `Command { std: "docker" "inspect" "b96cbb756f5628a6ba366027e5306dc03f187a790b5d7ec6f7ef1a617eb7301a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b96cbb756f5628a6ba366027e5306dc03f187a790b5d7ec6f7ef1a617eb7301a", kill_on_drop: false }`
[INFO] [stdout] b96cbb756f5628a6ba366027e5306dc03f187a790b5d7ec6f7ef1a617eb7301a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 911f9394f9c08b59f205bebd80fa2a90c2e3a4567bd39d06b42c50e7b9e265c0
[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" "911f9394f9c08b59f205bebd80fa2a90c2e3a4567bd39d06b42c50e7b9e265c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling regen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.35s
[INFO] running `Command { std: "docker" "inspect" "911f9394f9c08b59f205bebd80fa2a90c2e3a4567bd39d06b42c50e7b9e265c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "911f9394f9c08b59f205bebd80fa2a90c2e3a4567bd39d06b42c50e7b9e265c0", kill_on_drop: false }`
[INFO] [stdout] 911f9394f9c08b59f205bebd80fa2a90c2e3a4567bd39d06b42c50e7b9e265c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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] 994a0abce62b67ce65f10557fa7eb2c830b9f57d0206aa8f87417723f92809a7
[INFO] running `Command { std: "docker" "start" "-a" "994a0abce62b67ce65f10557fa7eb2c830b9f57d0206aa8f87417723f92809a7", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/regen-160ac27158b4221a
[INFO] [stdout] 
[INFO] [stdout] running 55 tests
[INFO] [stdout] test appending_iterators::tests::char_class_reports_element_count_of_one ... 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_reports_alt_min_elements ... ok
[INFO] [stdout] test appending_iterators::tests::byte_class_resets ... ok
[INFO] [stdout] test appending_iterators::tests::char_class_resets ... ok
[INFO] [stdout] test appending_iterators::tests::char_literal_returns_min_elements_in_chars ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_char_class ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_reports_total_element_count ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_byte_class ... ok
[INFO] [stdout] test appending_iterators::tests::alternation_char_class ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_alternation ... ok
[INFO] [stdout] test appending_iterators::tests::char_class_uses_all_values ... ok
[INFO] [stdout] test appending_iterators::tests::char_literal_returns_element_count_in_chars ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_resets ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_reports_total_min_elements ... ok
[INFO] [stdout] test appending_iterators::tests::concatenation_uses_all_values ... ok
[INFO] [stdout] test appending_iterators::tests::empty_concatenation_returns_nothing ... ok
[INFO] [stdout] test appending_iterators::tests::empty_alternation_returns_nothing ... ok
[INFO] [stdout] test appending_iterators::tests::empty_char_class_returns_nothing ... ok
[INFO] [stdout] test appending_iterators::tests::empty_byte_class_returns_nothing ... ok
[INFO] [stdout] test appending_iterators::tests::byte_literal_returns_element_count_in_bytes ... ok
[INFO] [stdout] test appending_iterators::tests::literal_resets ... ok
[INFO] [stdout] test appending_iterators::tests::alternation_byte_class ... ok
[INFO] [stdout] test appending_iterators::tests::empty_repeat_returns_empty_string ... ok
[INFO] [stdout] test appending_iterators::tests::literal_returns_one_value ... ok
[INFO] [stdout] test appending_iterators::tests::alternation_resets ... ok
[INFO] [stdout] test appending_iterators::tests::byte_class_uses_all_values ... 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_alternation ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_char_class ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_respects_max_element_hint ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_with_zero_reports_zero_min_elements ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_resets ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_alternation_respects_max_element_hint ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_uses_all_values ... ok
[INFO] [stdout] test appending_iterators::tests::byte_literal_returns_min_elements_in_bytes ... ok
[INFO] [stdout] test appending_iterators::tests::repeat_byte_class ... ok
[INFO] [stdout] test appending_iterators::tests::alternation_concatenation ... ok
[INFO] [stdout] test tests::empty_returns_nothing ... ok
[INFO] [stdout] test appending_iterators::tests::alternation_reports_alt_element_counts ... ok
[INFO] [stdout] test tests::alternation ... ok
[INFO] [stdout] test appending_iterators::tests::char_class_reports_min_elements_of_one ... ok
[INFO] [stdout] test tests::literal ... ok
[INFO] [stdout] test tests::unfinished_alternation_branch_is_ignored ... ok
[INFO] [stdout] test tests::max_length_with_alternation_branches_of_unequal_length ... ok
[INFO] [stdout] test tests::repetition_zero_or_one ... ok
[INFO] [stdout] test tests::byte_dot_all ... ok
[INFO] [stdout] test tests::repetition_range_exactly ... ok
[INFO] [stdout] test tests::concat ... ok
[INFO] [stdout] test tests::max_length_with_fixed_parts ... ok
[INFO] [stdout] test tests::repetition_range ... 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] [stderr]      Running /opt/rustwide/target/debug/deps/regen-f242870abc733ea1
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests regen
[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] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - (line 30) ... ok
[INFO] [stdout] test src/lib.rs - Generator::new_with_options (line 188) ... ok
[INFO] [stdout] test src/lib.rs - (line 19) ... ok
[INFO] [stdout] test src/lib.rs - Generator::append_next (line 218) ... ok
[INFO] [stdout] test src/lib.rs - Generator::new (line 175) ... ok
[INFO] [stdout] test src/lib.rs - (line 57) ... ok
[INFO] [stdout] test src/lib.rs - (line 42) ... 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" "994a0abce62b67ce65f10557fa7eb2c830b9f57d0206aa8f87417723f92809a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "994a0abce62b67ce65f10557fa7eb2c830b9f57d0206aa8f87417723f92809a7", kill_on_drop: false }`
[INFO] [stdout] 994a0abce62b67ce65f10557fa7eb2c830b9f57d0206aa8f87417723f92809a7