[INFO] cloning repository https://github.com/yarrow/zet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yarrow/zet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyarrow%2Fzet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyarrow%2Fzet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 333c284be753051820d227bbb32a48ed464a8a63
[INFO] testing yarrow/zet against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyarrow%2Fzet" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yarrow/zet 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 git repo https://github.com/yarrow/zet
[INFO] finished tweaking git repo https://github.com/yarrow/zet
[INFO] tweaked toml for git repo https://github.com/yarrow/zet written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/yarrow/zet 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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stdout] 1861661e06949489baed2793b8c122abff6d40fd292fd1d3bc8eb98c73976807
[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" "1861661e06949489baed2793b8c122abff6d40fd292fd1d3bc8eb98c73976807", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1861661e06949489baed2793b8c122abff6d40fd292fd1d3bc8eb98c73976807", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1861661e06949489baed2793b8c122abff6d40fd292fd1d3bc8eb98c73976807", kill_on_drop: false }`
[INFO] [stdout] 1861661e06949489baed2793b8c122abff6d40fd292fd1d3bc8eb98c73976807
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4946c46bce01fd8cb6d23ed1c6087c38f89f0c78fa67296c5e1f8e3cd211cc2a
[INFO] running `Command { std: "docker" "start" "-a" "4946c46bce01fd8cb6d23ed1c6087c38f89f0c78fa67296c5e1f8e3cd211cc2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling term_size v0.3.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling indexmap v1.3.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling backtrace v0.3.42
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling zet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.12s
[INFO] running `Command { std: "docker" "inspect" "4946c46bce01fd8cb6d23ed1c6087c38f89f0c78fa67296c5e1f8e3cd211cc2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4946c46bce01fd8cb6d23ed1c6087c38f89f0c78fa67296c5e1f8e3cd211cc2a", kill_on_drop: false }`
[INFO] [stdout] 4946c46bce01fd8cb6d23ed1c6087c38f89f0c78fa67296c5e1f8e3cd211cc2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] a104bfed7d8bf2a5abf8aa4e5d8b6cbf9985ffb312ff13d2400825b9542f7d1d
[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" "a104bfed7d8bf2a5abf8aa4e5d8b6cbf9985ffb312ff13d2400825b9542f7d1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.6.13
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling predicates v1.0.2
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling bstr v0.2.9
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling crossbeam-channel v0.4.0
[INFO] [stderr]    Compiling float-cmp v0.4.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling regex v1.3.3
[INFO] [stderr]    Compiling globset v0.4.4
[INFO] [stderr]    Compiling predicates v0.5.2
[INFO] [stderr]    Compiling ignore v0.4.11
[INFO] [stderr]    Compiling globwalk v0.3.1
[INFO] [stderr]    Compiling assert_fs v0.2.1
[INFO] [stderr]    Compiling serde_json v1.0.44
[INFO] [stderr]    Compiling escargot v0.3.1
[INFO] [stderr]    Compiling assert_cmd v0.10.2
[INFO] [stderr]    Compiling zet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 58.43s
[INFO] running `Command { std: "docker" "inspect" "a104bfed7d8bf2a5abf8aa4e5d8b6cbf9985ffb312ff13d2400825b9542f7d1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a104bfed7d8bf2a5abf8aa4e5d8b6cbf9985ffb312ff13d2400825b9542f7d1d", kill_on_drop: false }`
[INFO] [stdout] a104bfed7d8bf2a5abf8aa4e5d8b6cbf9985ffb312ff13d2400825b9542f7d1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] fc552d7d829a148ed5dd3593b8d6d505989927eab26d9a30be39c28c1551634b
[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" "fc552d7d829a148ed5dd3593b8d6d505989927eab26d9a30be39c28c1551634b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/zet-5761b8c5003fe8f2
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::given_a_single_argument_all_ops_but_multiple_return_its_lines_in_order_without_dups ... ok
[INFO] [stdout] test test::results_for_each_operation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/zet-b04bbabbf48adf18
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/features-0f97f63a35fc7465
[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 8 tests
[INFO] [stdout] test output_is_subsequence_of_union_output_for_all_subcommands ... ok
[INFO] [stdout] test union_output_is_the_concatentated_input_lines_in_order_with_no_duplicates ... ok
[INFO] [stdout] test each_line_occurs_at_most_once_in_the_output_of_any_subcommand ... ok
[INFO] [stdout] test requires_subcommand ... ok
[INFO] [stdout] test zet_subcommand_x_y_z_matches_expected_output_for_all_subcommands ... ok
[INFO] [stdout] test fail_on_missing_file ... ok
[INFO] [stdout] test subcommands_allow_empty_arg_list_and_produce_empty_output ... ok
[INFO] [stderr]    Doc-tests zet
[INFO] [stdout] test single_argument_just_prints_the_unique_lines_for_all_but_multiple ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/io.rs - io::ContentsIter (line 20) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fc552d7d829a148ed5dd3593b8d6d505989927eab26d9a30be39c28c1551634b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc552d7d829a148ed5dd3593b8d6d505989927eab26d9a30be39c28c1551634b", kill_on_drop: false }`
[INFO] [stdout] fc552d7d829a148ed5dd3593b8d6d505989927eab26d9a30be39c28c1551634b