[INFO] fetching crate zet 0.2.0...
[INFO] testing zet-0.2.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate zet 0.2.0 into /workspace/builds/worker-68/source
[INFO] validating manifest of crates.io crate zet 0.2.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zet 0.2.0
[INFO] finished tweaking crates.io crate zet 0.2.0
[INFO] tweaked toml for crates.io crate zet 0.2.0 written to /workspace/builds/worker-68/source/Cargo.toml
[INFO] crate crates.io crate zet 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded assert_fs v1.0.3
[INFO] [stderr]   Downloaded predicates v2.0.0
[INFO] [stderr]   Downloaded object v0.25.3
[INFO] [stderr]   Downloaded assert_cmd v1.0.7
[INFO] [stderr]   Downloaded backtrace v0.3.60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d175ba908d7d4973f1666a38269364b32627f3cf301a8fc6ab2520a6d29b538
[INFO] running `Command { std: "docker" "start" "-a" "6d175ba908d7d4973f1666a38269364b32627f3cf301a8fc6ab2520a6d29b538", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d175ba908d7d4973f1666a38269364b32627f3cf301a8fc6ab2520a6d29b538", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d175ba908d7d4973f1666a38269364b32627f3cf301a8fc6ab2520a6d29b538", kill_on_drop: false }`
[INFO] [stdout] 6d175ba908d7d4973f1666a38269364b32627f3cf301a8fc6ab2520a6d29b538
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0596c2be9fb855202408478910bd4abfca1ecf0456c911de69b04d7bb8976002
[INFO] running `Command { std: "docker" "start" "-a" "0596c2be9fb855202408478910bd4abfca1ecf0456c911de69b04d7bb8976002", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling gimli v0.24.0
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling addr2line v0.15.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling object v0.25.3
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling zet v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.25s
[INFO] running `Command { std: "docker" "inspect" "0596c2be9fb855202408478910bd4abfca1ecf0456c911de69b04d7bb8976002", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0596c2be9fb855202408478910bd4abfca1ecf0456c911de69b04d7bb8976002", kill_on_drop: false }`
[INFO] [stdout] 0596c2be9fb855202408478910bd4abfca1ecf0456c911de69b04d7bb8976002
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6dc66495142dbdeae779d3eebe8b0f22f7bfbc8c67b818593ba8f282c1ddc6bc
[INFO] running `Command { std: "docker" "start" "-a" "6dc66495142dbdeae779d3eebe8b0f22f7bfbc8c67b818593ba8f282c1ddc6bc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling predicates-core v1.0.2
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling predicates-tree v1.0.2
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling predicates v2.0.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling assert_cmd v1.0.7
[INFO] [stderr]    Compiling globset v0.4.8
[INFO] [stderr]    Compiling ignore v0.4.18
[INFO] [stderr]    Compiling globwalk v0.8.1
[INFO] [stderr]    Compiling assert_fs v1.0.3
[INFO] [stderr]    Compiling zet v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 18.98s
[INFO] running `Command { std: "docker" "inspect" "6dc66495142dbdeae779d3eebe8b0f22f7bfbc8c67b818593ba8f282c1ddc6bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dc66495142dbdeae779d3eebe8b0f22f7bfbc8c67b818593ba8f282c1ddc6bc", kill_on_drop: false }`
[INFO] [stdout] 6dc66495142dbdeae779d3eebe8b0f22f7bfbc8c67b818593ba8f282c1ddc6bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c30244a5f79409175742e4bf1c283f10537b3ac2e00f16d4af97d8c471dc1cff
[INFO] running `Command { std: "docker" "start" "-a" "c30244a5f79409175742e4bf1c283f10537b3ac2e00f16d4af97d8c471dc1cff", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.25s
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/zet-6c19a0883c1edc78)
[INFO] [stdout] test io::test::utf8_bom_is_correct ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/zet-e22e926f42468236)
[INFO] [stdout] test io::test::fn_lines_of_strips_utf8_bom_and_line_terminators ... ok
[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] test io::test::utf_16be_is_translated_to_utf8 ... ok
[INFO] [stdout] test io::test::utf_16le_is_translated_to_utf8 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running tests/features.rs (/opt/rustwide/target/debug/deps/features-0fb9cbf21212b19d)
[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 12 tests
[INFO] [stdout] test each_line_occurs_at_most_once_in_the_output_of_any_subcommand ... ok
[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 fail_bad_subcommand ... ok
[INFO] [stdout] test requires_subcommand ... ok
[INFO] [stdout] test the_last_line_of_a_file_need_not_end_in_a_newline ... ok
[INFO] [stdout] test single_argument_just_prints_the_unique_lines_for_all_but_multiple ... ok
[INFO] [stdout] test zet_subcommand_x_y_z_matches_expected_output_for_all_subcommands ... ok
[INFO] [stdout] test zet_accepts_all_encodings_and_remembers_the_first_file_has_a_byte_order_mark ... ok
[INFO] [stdout] test subcommands_allow_empty_arg_list_and_produce_empty_output ... ok
[INFO] [stdout] test zet_terminates_every_output_line_with_the_line_terminator_of_the_first_input_line ... ok
[INFO] [stdout] test fail_on_missing_file ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.29s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests zet
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/io.rs - io::ContentsIter (line 73) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c30244a5f79409175742e4bf1c283f10537b3ac2e00f16d4af97d8c471dc1cff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c30244a5f79409175742e4bf1c283f10537b3ac2e00f16d4af97d8c471dc1cff", kill_on_drop: false }`
[INFO] [stdout] c30244a5f79409175742e4bf1c283f10537b3ac2e00f16d4af97d8c471dc1cff