[INFO] fetching crate uu_head 0.0.7...
[INFO] testing uu_head-0.0.7 against 1.55.0 for beta-1.56-1
[INFO] extracting crate uu_head 0.0.7 into /workspace/builds/worker-83/source
[INFO] validating manifest of crates.io crate uu_head 0.0.7 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-83/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" "+1.55.0" "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-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 397cea3c2e8145def28597a57e5e323001de39d664311776efd2c95256bcfa58
[INFO] running `Command { std: "docker" "start" "-a" "397cea3c2e8145def28597a57e5e323001de39d664311776efd2c95256bcfa58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "397cea3c2e8145def28597a57e5e323001de39d664311776efd2c95256bcfa58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "397cea3c2e8145def28597a57e5e323001de39d664311776efd2c95256bcfa58", kill_on_drop: false }`
[INFO] [stdout] 397cea3c2e8145def28597a57e5e323001de39d664311776efd2c95256bcfa58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 835a50be3a74b218f9fcfb8cc0f6e6b94d79b3cfc6f6eb9f2d80981b05ad7611
[INFO] running `Command { std: "docker" "start" "-a" "835a50be3a74b218f9fcfb8cc0f6e6b94d79b3cfc6f6eb9f2d80981b05ad7611", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 3.50s
[INFO] running `Command { std: "docker" "inspect" "835a50be3a74b218f9fcfb8cc0f6e6b94d79b3cfc6f6eb9f2d80981b05ad7611", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "835a50be3a74b218f9fcfb8cc0f6e6b94d79b3cfc6f6eb9f2d80981b05ad7611", kill_on_drop: false }`
[INFO] [stdout] 835a50be3a74b218f9fcfb8cc0f6e6b94d79b3cfc6f6eb9f2d80981b05ad7611
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 890f57634f784b469d1e2607aa5f4d5b7b75058576ed638e1c6d40c826aa76ba
[INFO] running `Command { std: "docker" "start" "-a" "890f57634f784b469d1e2607aa5f4d5b7b75058576ed638e1c6d40c826aa76ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling uu_head v0.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "890f57634f784b469d1e2607aa5f4d5b7b75058576ed638e1c6d40c826aa76ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "890f57634f784b469d1e2607aa5f4d5b7b75058576ed638e1c6d40c826aa76ba", kill_on_drop: false }`
[INFO] [stdout] 890f57634f784b469d1e2607aa5f4d5b7b75058576ed638e1c6d40c826aa76ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3b85fe755e50e267954e99b85781c6942dd5e7b3a957c4fd8c9f8880f7fb8247
[INFO] running `Command { std: "docker" "start" "-a" "3b85fe755e50e267954e99b85781c6942dd5e7b3a957c4fd8c9f8880f7fb8247", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/uu_head-abf623851d685432)
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[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_errors_obsolete ... ok
[INFO] [stdout] test parse::tests::test_parse_obsolete_no_match ... ok
[INFO] [stdout] test parse::tests::test_parse_obsolete_overflow_x64 ... ok
[INFO] [stdout] test take::tests::test_more_elements ... ok
[INFO] [stdout] test take::tests::test_fewer_elements ... 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 take::tests::test_zero_elements ... ok
[INFO] [stdout] test tests::read_early_exit ... ok
[INFO] [stdout] test tests::test_arg_iterate ... ok
[INFO] [stdout] test tests::test_arg_iterate_bad_encoding ... ok
[INFO] [stdout] test tests::test_options_correct_defaults ... ok
[INFO] [stdout] test tests::all_args_test ... ok
[INFO] [stdout] test tests::test_args_modes ... ok
[INFO] [stdout] test tests::test_parse_mode ... ok
[INFO] [stdout] test tests::test_options_errors ... ok
[INFO] [stdout] test tests::test_gnu_compatibility ... 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-baa2cda4202bb4be)
[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" "3b85fe755e50e267954e99b85781c6942dd5e7b3a957c4fd8c9f8880f7fb8247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b85fe755e50e267954e99b85781c6942dd5e7b3a957c4fd8c9f8880f7fb8247", kill_on_drop: false }`
[INFO] [stdout] 3b85fe755e50e267954e99b85781c6942dd5e7b3a957c4fd8c9f8880f7fb8247