[INFO] fetching crate imex 0.2.1...
[INFO] testing imex-0.2.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate imex 0.2.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate imex 0.2.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", 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-8/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" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 002d165e49f6d21b76040938309adc62504c73ee64d1a09946b99b3c4e2affd0
[INFO] running `Command { std: "docker" "start" "-a" "002d165e49f6d21b76040938309adc62504c73ee64d1a09946b99b3c4e2affd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "002d165e49f6d21b76040938309adc62504c73ee64d1a09946b99b3c4e2affd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "002d165e49f6d21b76040938309adc62504c73ee64d1a09946b99b3c4e2affd0", kill_on_drop: false }`
[INFO] [stdout] 002d165e49f6d21b76040938309adc62504c73ee64d1a09946b99b3c4e2affd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62d82d7dec4e3dc950dab7ac6f5d8d978c440bea1f2b06fec90eb1ded03f2829
[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" "62d82d7dec4e3dc950dab7ac6f5d8d978c440bea1f2b06fec90eb1ded03f2829", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling nom v5.1.2
[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 14.04s
[INFO] running `Command { std: "docker" "inspect" "62d82d7dec4e3dc950dab7ac6f5d8d978c440bea1f2b06fec90eb1ded03f2829", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62d82d7dec4e3dc950dab7ac6f5d8d978c440bea1f2b06fec90eb1ded03f2829", kill_on_drop: false }`
[INFO] [stdout] 62d82d7dec4e3dc950dab7ac6f5d8d978c440bea1f2b06fec90eb1ded03f2829
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd8d862b0dc14e710efebe9f6f76175e8d86e749129b88162602caa121d8c453
[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" "bd8d862b0dc14e710efebe9f6f76175e8d86e749129b88162602caa121d8c453", kill_on_drop: false }`
[INFO] [stderr]    Compiling imex v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.89s
[INFO] running `Command { std: "docker" "inspect" "bd8d862b0dc14e710efebe9f6f76175e8d86e749129b88162602caa121d8c453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd8d862b0dc14e710efebe9f6f76175e8d86e749129b88162602caa121d8c453", kill_on_drop: false }`
[INFO] [stdout] bd8d862b0dc14e710efebe9f6f76175e8d86e749129b88162602caa121d8c453
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7bca6527fb5726d4761037917712d79631379e3d1a817fbd31bb1d22ac6aad33
[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" "7bca6527fb5726d4761037917712d79631379e3d1a817fbd31bb1d22ac6aad33", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/imex-1a44ded2e89281ba
[INFO] [stdout] 
[INFO] [stdout] running 27 tests
[INFO] [stdout] test expression::imex::tests::bad_repeat_bracket_contents_fails ... ok
[INFO] [stdout] test expression::imex::tests::bad_chars_fails ... 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::imex::tests::too_many_open_parens_fails ... ok
[INFO] [stdout] test expression::imex_val::tests::group_iterates_over_imex ... ok
[INFO] [stdout] test expression::imex_val::tests::single_iterates_once ... ok
[INFO] [stdout] test expression::quantified_imex_val::tests::group_imex_val_completes_inner_iteration_first ... 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::parens_gives_group_imex ... ok
[INFO] [stdout] test expression::quantified_imex_val::tests::iterating_qimex_val_with_three_quantifier_repeats_thrice ... ok
[INFO] [stdout] test expression::utils::iter_counter_tests::iter_counter_counts_iterations ... ok
[INFO] [stdout] test expression::imex::tests::repeats_gives_repeating_imex ... ok
[INFO] [stdout] test expression::quantifier::tests::infinite_quantifier_iterates_a_lot ... ok
[INFO] [stdout] test expression::quantified_imex_val::tests::exhausting_imex_val_before_repeats_copmlete_gives_none ... ok
[INFO] [stdout] test iter::tests::completed_imex_exits_repeating ... ok
[INFO] [stdout] test expression::utils::iter_counter_tests::iter_counter_wont_count_past_zero_on_empty_imex ... ok
[INFO] [stdout] test expression::imex::tests::empty_string_gives_empty_group_imex ... ok
[INFO] [stdout] test expression::quantifier::tests::three_quantifier_iterates_thrice ... ok
[INFO] [stdout] test expression::quantifier::tests::zero_quantifier_gives_immediate_none ... ok
[INFO] [stdout] test expression::imex::tests::mismatched_parens_fails ... ok
[INFO] [stdout] test iter::tests::empty_imex_gives_empty_merge ... ok
[INFO] [stdout] test iter::tests::out_of_range_imex_skips ... ok
[INFO] [stdout] test iter::tests::non_repeating_imex_might_not_complete ... ok
[INFO] [stdout] test iter::tests::empty_iter_list_gives_empty_merge ... ok
[INFO] [stdout] test iter::tests::empty_iters_give_empty_merge ... ok
[INFO] [stdout] test iter::tests::repeating_imex_repeats ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/imex-95710719b8fb3cbc
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests imex
[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/expression/imex.rs - expression::imex::IMEx::try_from (line 65) ... ok
[INFO] [stdout] test src/merges.rs - merges::IMExMerges::imex_merge (line 66) ... ok
[INFO] [stdout] test src/iter.rs - iter::IMExIter<T, I>::new (line 38) ... ok
[INFO] [stdout] test src/merges.rs - merges::IMExMerges::imex_merge_all (line 18) ... 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] test src/merges.rs - merges::IMExMerges::rot_merge_all (line 35) ... 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" "7bca6527fb5726d4761037917712d79631379e3d1a817fbd31bb1d22ac6aad33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bca6527fb5726d4761037917712d79631379e3d1a817fbd31bb1d22ac6aad33", kill_on_drop: false }`
[INFO] [stdout] 7bca6527fb5726d4761037917712d79631379e3d1a817fbd31bb1d22ac6aad33