[INFO] fetching crate uu_head 0.0.8...
[INFO] testing uu_head-0.0.8 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate uu_head 0.0.8 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate uu_head 0.0.8 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uu_head 0.0.8
[INFO] finished tweaking crates.io crate uu_head 0.0.8
[INFO] tweaked toml for crates.io crate uu_head 0.0.8 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate uu_head 0.0.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 089d8fa329b9d16374588c925d68ca47c1c3bc3f01cc717ca92efbe1a1c07128
[INFO] running `Command { std: "docker" "start" "-a" "089d8fa329b9d16374588c925d68ca47c1c3bc3f01cc717ca92efbe1a1c07128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "089d8fa329b9d16374588c925d68ca47c1c3bc3f01cc717ca92efbe1a1c07128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "089d8fa329b9d16374588c925d68ca47c1c3bc3f01cc717ca92efbe1a1c07128", kill_on_drop: false }`
[INFO] [stdout] 089d8fa329b9d16374588c925d68ca47c1c3bc3f01cc717ca92efbe1a1c07128
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 787f301c9522a6b5c90e3c53616bf82d8b7fa5706e25a9ebb247ad3a88c6008c
[INFO] running `Command { std: "docker" "start" "-a" "787f301c9522a6b5c90e3c53616bf82d8b7fa5706e25a9ebb247ad3a88c6008c", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling uucore v0.0.10
[INFO] [stderr]    Compiling uu_head v0.0.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.75s
[INFO] running `Command { std: "docker" "inspect" "787f301c9522a6b5c90e3c53616bf82d8b7fa5706e25a9ebb247ad3a88c6008c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "787f301c9522a6b5c90e3c53616bf82d8b7fa5706e25a9ebb247ad3a88c6008c", kill_on_drop: false }`
[INFO] [stdout] 787f301c9522a6b5c90e3c53616bf82d8b7fa5706e25a9ebb247ad3a88c6008c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eab15e6e714800440bac46e10886e3f9fe8cf7a5b6029a80f87a8620fdebc878
[INFO] running `Command { std: "docker" "start" "-a" "eab15e6e714800440bac46e10886e3f9fe8cf7a5b6029a80f87a8620fdebc878", kill_on_drop: false }`
[INFO] [stderr]    Compiling uu_head v0.0.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `Command { std: "docker" "inspect" "eab15e6e714800440bac46e10886e3f9fe8cf7a5b6029a80f87a8620fdebc878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eab15e6e714800440bac46e10886e3f9fe8cf7a5b6029a80f87a8620fdebc878", kill_on_drop: false }`
[INFO] [stdout] eab15e6e714800440bac46e10886e3f9fe8cf7a5b6029a80f87a8620fdebc878
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ccdc5bdd333770dfd818f0a3ae01ab7decf0f13deb20c015dcb0dd15bdf5791c
[INFO] running `Command { std: "docker" "start" "-a" "ccdc5bdd333770dfd818f0a3ae01ab7decf0f13deb20c015dcb0dd15bdf5791c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/uu_head-44bbaf1149c0cde0)
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test lines::tests::test_not_null_terminated ... ok
[INFO] [stdout] test parse::tests::test_parse_numbers_obsolete ... ok
[INFO] [stdout] test take::tests::test_fewer_lines ... ok
[INFO] [stdout] test take::tests::test_more_lines ... ok
[INFO] [stdout] test take::tests::test_same_number_of_elements ... ok
[INFO] [stdout] test take::tests::test_zero_elements ... 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 lines::tests::test_null_terminated ... ok
[INFO] [stdout] test parse::tests::test_parse_errors_obsolete ... ok
[INFO] [stdout] test take::tests::test_more_elements ... ok
[INFO] [stdout] test take::tests::test_zero_lines ... ok
[INFO] [stdout] test take::tests::test_fewer_elements ... ok
[INFO] [stdout] test tests::test_options_correct_defaults ... ok
[INFO] [stdout] test tests::test_arg_iterate_bad_encoding ... ok
[INFO] [stdout] test tests::read_early_exit ... ok
[INFO] [stdout] test tests::test_parse_mode ... ok
[INFO] [stdout] test tests::test_arg_iterate ... ok
[INFO] [stdout] test tests::test_args_modes ... ok
[INFO] [stdout] test tests::all_args_test ... ok
[INFO] [stdout] test tests::test_options_errors ... ok
[INFO] [stdout] test tests::test_gnu_compatibility ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/head-1300e0b47cc6aabb)
[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 12) ... 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" "ccdc5bdd333770dfd818f0a3ae01ab7decf0f13deb20c015dcb0dd15bdf5791c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccdc5bdd333770dfd818f0a3ae01ab7decf0f13deb20c015dcb0dd15bdf5791c", kill_on_drop: false }`
[INFO] [stdout] ccdc5bdd333770dfd818f0a3ae01ab7decf0f13deb20c015dcb0dd15bdf5791c