[INFO] fetching crate uu_head 0.0.7...
[INFO] testing uu_head-0.0.7 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate uu_head 0.0.7 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate uu_head 0.0.7 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uu_head 0.0.7
[INFO] finished tweaking crates.io crate uu_head 0.0.7
[INFO] tweaked toml for crates.io crate uu_head 0.0.7 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate uu_head 0.0.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5c43bf7d9c7ce199b98b3bedb8f97c8e9ff5f2c57e421189e311394d1be1bfe
[INFO] running `Command { std: "docker" "start" "-a" "e5c43bf7d9c7ce199b98b3bedb8f97c8e9ff5f2c57e421189e311394d1be1bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5c43bf7d9c7ce199b98b3bedb8f97c8e9ff5f2c57e421189e311394d1be1bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5c43bf7d9c7ce199b98b3bedb8f97c8e9ff5f2c57e421189e311394d1be1bfe", kill_on_drop: false }`
[INFO] [stdout] e5c43bf7d9c7ce199b98b3bedb8f97c8e9ff5f2c57e421189e311394d1be1bfe
[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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee0eaf3f3b441cbde51b21a292924d29c02663d84e26bda4896f41036c173844
[INFO] running `Command { std: "docker" "start" "-a" "ee0eaf3f3b441cbde51b21a292924d29c02663d84e26bda4896f41036c173844", kill_on_drop: false }`
[INFO] [stderr]    Compiling uucore v0.0.9
[INFO] [stderr]    Compiling uu_head v0.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "ee0eaf3f3b441cbde51b21a292924d29c02663d84e26bda4896f41036c173844", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee0eaf3f3b441cbde51b21a292924d29c02663d84e26bda4896f41036c173844", kill_on_drop: false }`
[INFO] [stdout] ee0eaf3f3b441cbde51b21a292924d29c02663d84e26bda4896f41036c173844
[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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c888333b6e8a5db95a5d563ff5a95e5d409ef58c3e0c1e939046b39b7f3d1cc7
[INFO] running `Command { std: "docker" "start" "-a" "c888333b6e8a5db95a5d563ff5a95e5d409ef58c3e0c1e939046b39b7f3d1cc7", kill_on_drop: false }`
[INFO] [stderr]    Compiling uu_head v0.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "c888333b6e8a5db95a5d563ff5a95e5d409ef58c3e0c1e939046b39b7f3d1cc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c888333b6e8a5db95a5d563ff5a95e5d409ef58c3e0c1e939046b39b7f3d1cc7", kill_on_drop: false }`
[INFO] [stdout] c888333b6e8a5db95a5d563ff5a95e5d409ef58c3e0c1e939046b39b7f3d1cc7
[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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 51d6ac9273368fc754f70c8412dfe99f7ac3cf1b3043f93bdbfcd139ef1ad79f
[INFO] running `Command { std: "docker" "start" "-a" "51d6ac9273368fc754f70c8412dfe99f7ac3cf1b3043f93bdbfcd139ef1ad79f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/uu_head-a960fa0b552bec21)
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test parse::tests::test_parse_errors_obsolete ... ok
[INFO] [stdout] test lines::tests::test_not_null_terminated ... ok
[INFO] [stdout] test lines::tests::test_null_terminated ... ok
[INFO] [stdout] test parse::tests::test_parse_obsolete_no_match ... ok
[INFO] [stdout] test take::tests::test_fewer_elements ... ok
[INFO] [stdout] test tests::test_arg_iterate ... ok
[INFO] [stdout] test parse::tests::test_parse_obsolete_overflow_x64 ... ok
[INFO] [stdout] test parse::tests::test_parse_numbers_obsolete ... ok
[INFO] [stdout] test take::tests::test_same_number_of_elements ... ok
[INFO] [stdout] test tests::test_arg_iterate_bad_encoding ... ok
[INFO] [stdout] test tests::all_args_test ... ok
[INFO] [stdout] test take::tests::test_more_elements ... ok
[INFO] [stdout] test take::tests::test_zero_elements ... ok
[INFO] [stdout] test tests::read_early_exit ... ok
[INFO] [stdout] test tests::test_options_correct_defaults ... ok
[INFO] [stdout] test tests::test_gnu_compatibility ... ok
[INFO] [stdout] test tests::test_parse_mode ... ok
[INFO] [stdout] test tests::test_args_modes ... ok
[INFO] [stdout] test tests::test_options_errors ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/head-5cb472cac404eaa1)
[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] [stderr]    Doc-tests uu_head
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lines.rs - lines::zlines (line 18) ... ignored
[INFO] [stdout] test src/take.rs - take::take_all_but (line 8) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "51d6ac9273368fc754f70c8412dfe99f7ac3cf1b3043f93bdbfcd139ef1ad79f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51d6ac9273368fc754f70c8412dfe99f7ac3cf1b3043f93bdbfcd139ef1ad79f", kill_on_drop: false }`
[INFO] [stdout] 51d6ac9273368fc754f70c8412dfe99f7ac3cf1b3043f93bdbfcd139ef1ad79f