[INFO] fetching crate imex 0.2.1...
[INFO] testing imex-0.2.1 against 1.52.1 for beta-1.52-2
[INFO] extracting crate imex 0.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate imex 0.2.1 on toolchain 1.52.1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate imex 0.2.1
[INFO] finished tweaking crates.io crate imex 0.2.1
[INFO] tweaked toml for crates.io crate imex 0.2.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate imex 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "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] 8ca88fc92af39fa698a828ce81e0ddea91c8a2624833a6970a9d8c0972690e46
[INFO] running `Command { std: "docker" "start" "-a" "8ca88fc92af39fa698a828ce81e0ddea91c8a2624833a6970a9d8c0972690e46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ca88fc92af39fa698a828ce81e0ddea91c8a2624833a6970a9d8c0972690e46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ca88fc92af39fa698a828ce81e0ddea91c8a2624833a6970a9d8c0972690e46", kill_on_drop: false }`
[INFO] [stdout] 8ca88fc92af39fa698a828ce81e0ddea91c8a2624833a6970a9d8c0972690e46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f43311b77367e44663a5acb5daece5b7fca673df9706d0bdf3eb481d01d877fd
[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" "f43311b77367e44663a5acb5daece5b7fca673df9706d0bdf3eb481d01d877fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling imex v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.47s
[INFO] running `Command { std: "docker" "inspect" "f43311b77367e44663a5acb5daece5b7fca673df9706d0bdf3eb481d01d877fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f43311b77367e44663a5acb5daece5b7fca673df9706d0bdf3eb481d01d877fd", kill_on_drop: false }`
[INFO] [stdout] f43311b77367e44663a5acb5daece5b7fca673df9706d0bdf3eb481d01d877fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "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] b8a657b83ec1ee8e87c12eb6acb79d92c831ec5f5ff144dd3ab3dad464423801
[INFO] running `Command { std: "docker" "start" "-a" "b8a657b83ec1ee8e87c12eb6acb79d92c831ec5f5ff144dd3ab3dad464423801", kill_on_drop: false }`
[INFO] [stderr]    Compiling imex v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.94s
[INFO] running `Command { std: "docker" "inspect" "b8a657b83ec1ee8e87c12eb6acb79d92c831ec5f5ff144dd3ab3dad464423801", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8a657b83ec1ee8e87c12eb6acb79d92c831ec5f5ff144dd3ab3dad464423801", kill_on_drop: false }`
[INFO] [stdout] b8a657b83ec1ee8e87c12eb6acb79d92c831ec5f5ff144dd3ab3dad464423801
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0d662afbe1326f687d2902774d9c38f0f40bf668917a5e920d7c9b1ebd96212d
[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" "0d662afbe1326f687d2902774d9c38f0f40bf668917a5e920d7c9b1ebd96212d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.37s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/imex-87bb323c9992e27f)
[INFO] [stdout] running 27 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/imex-76a39d0a8f83debe)
[INFO] [stdout] test expression::imex::tests::bad_chars_fails ... ok
[INFO] [stdout] test expression::imex::tests::bad_repeat_bracket_contents_fails ... ok
[INFO] [stdout] test expression::imex_val::tests::single_iterates_once ... ok
[INFO] [stdout] test expression::quantified_imex_val::tests::exhausting_imex_val_before_repeats_copmlete_gives_none ... ok
[INFO] [stdout] test expression::imex::tests::mismatched_parens_fails ... ok
[INFO] [stdout] test expression::imex_val::tests::group_iterates_over_imex ... ok
[INFO] [stdout] test expression::quantified_imex_val::tests::iterating_new_qimex_val_with_zero_quantifier_gives_none ... ok
[INFO] [stdout] test expression::imex::tests::repeats_gives_repeating_imex ... ok
[INFO] [stdout] test expression::imex::tests::bad_repeat_targets_fails ... ok
[INFO] [stdout] test expression::imex::tests::too_many_closed_parens_fails ... ok
[INFO] [stdout] test expression::quantified_imex_val::tests::iterating_qimex_val_with_three_quantifier_repeats_thrice ... ok
[INFO] [stdout] test expression::quantified_imex_val::tests::group_imex_val_completes_inner_iteration_first ... ok
[INFO] [stdout] test expression::quantifier::tests::three_quantifier_iterates_thrice ... ok
[INFO] [stdout] test expression::utils::iter_counter_tests::iter_counter_counts_iterations ... ok
[INFO] [stdout] test expression::utils::iter_counter_tests::iter_counter_wont_count_past_zero_on_empty_imex ... ok
[INFO] [stdout] test iter::tests::completed_imex_exits_repeating ... ok
[INFO] [stdout] test expression::imex::tests::parens_gives_group_imex ... ok
[INFO] [stdout] test expression::quantifier::tests::infinite_quantifier_iterates_a_lot ... ok
[INFO] [stdout] test iter::tests::empty_imex_gives_empty_merge ... ok
[INFO] [stdout] test iter::tests::empty_iter_list_gives_empty_merge ... ok
[INFO] [stdout] test expression::imex::tests::too_many_open_parens_fails ... ok
[INFO] [stdout] test iter::tests::non_repeating_imex_might_not_complete ... ok
[INFO] [stdout] test iter::tests::empty_iters_give_empty_merge ... ok
[INFO] [stdout] test iter::tests::repeating_imex_repeats ... ok
[INFO] [stdout] test expression::quantifier::tests::zero_quantifier_gives_immediate_none ... ok
[INFO] [stdout] test iter::tests::out_of_range_imex_skips ... ok
[INFO] [stdout] test expression::imex::tests::empty_string_gives_empty_group_imex ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests imex
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/merges.rs - merges::IMExMerges::imex_merge_all (line 18) ... ok
[INFO] [stdout] test src/expression/imex.rs - expression::imex::IMEx::try_from (line 65) ... ok
[INFO] [stdout] test src/iter.rs - iter::IMExIter<T, I>::new (line 38) ... ok
[INFO] [stdout] test src/merges.rs - merges::IMExMerges::rot_merge_all (line 35) ... ok
[INFO] [stdout] test src/merges.rs - merges::IMExMerges::imex_merge (line 66) ... ok
[INFO] [stdout] test src/lib.rs - (line 29) ... ok
[INFO] [stdout] test src/merges.rs - merges::IMExMerges::alt_merge (line 88) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.63s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0d662afbe1326f687d2902774d9c38f0f40bf668917a5e920d7c9b1ebd96212d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d662afbe1326f687d2902774d9c38f0f40bf668917a5e920d7c9b1ebd96212d", kill_on_drop: false }`
[INFO] [stdout] 0d662afbe1326f687d2902774d9c38f0f40bf668917a5e920d7c9b1ebd96212d