[INFO] fetching crate uu_head 0.0.8...
[INFO] testing uu_head-0.0.8 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate uu_head 0.0.8 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate uu_head 0.0.8 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-5/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a8d06b8f2a6f195c34b888bf7c9e90feb0eeb314ac49922436d19539967cb77
[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" "7a8d06b8f2a6f195c34b888bf7c9e90feb0eeb314ac49922436d19539967cb77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a8d06b8f2a6f195c34b888bf7c9e90feb0eeb314ac49922436d19539967cb77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a8d06b8f2a6f195c34b888bf7c9e90feb0eeb314ac49922436d19539967cb77", kill_on_drop: false }`
[INFO] [stdout] 7a8d06b8f2a6f195c34b888bf7c9e90feb0eeb314ac49922436d19539967cb77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 047d2329e9e9bf12c89e6381e146d0aee5502d050097c5986fb8251f907d54b6
[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" "047d2329e9e9bf12c89e6381e146d0aee5502d050097c5986fb8251f907d54b6", 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 6.05s
[INFO] running `Command { std: "docker" "inspect" "047d2329e9e9bf12c89e6381e146d0aee5502d050097c5986fb8251f907d54b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "047d2329e9e9bf12c89e6381e146d0aee5502d050097c5986fb8251f907d54b6", kill_on_drop: false }`
[INFO] [stdout] 047d2329e9e9bf12c89e6381e146d0aee5502d050097c5986fb8251f907d54b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 909ae24108cf6113adf3f16429ec3b4d81287f081c842cfd6081289fbd6b72c8
[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" "909ae24108cf6113adf3f16429ec3b4d81287f081c842cfd6081289fbd6b72c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling uu_head v0.0.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.22s
[INFO] running `Command { std: "docker" "inspect" "909ae24108cf6113adf3f16429ec3b4d81287f081c842cfd6081289fbd6b72c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "909ae24108cf6113adf3f16429ec3b4d81287f081c842cfd6081289fbd6b72c8", kill_on_drop: false }`
[INFO] [stdout] 909ae24108cf6113adf3f16429ec3b4d81287f081c842cfd6081289fbd6b72c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", 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] f4ebccb602078e80cbc2526b6810fa4813917df0b1a9ec111687f57a77b6d841
[INFO] running `Command { std: "docker" "start" "-a" "f4ebccb602078e80cbc2526b6810fa4813917df0b1a9ec111687f57a77b6d841", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 22 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/uu_head-44bbaf1149c0cde0)
[INFO] [stdout] test lines::tests::test_not_null_terminated ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/head-1300e0b47cc6aabb)
[INFO] [stdout] test parse::tests::test_parse_obsolete_overflow_x64 ... ok
[INFO] [stderr]    Doc-tests uu_head
[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_elements ... ok
[INFO] [stdout] test take::tests::test_more_lines ... ok
[INFO] [stdout] test take::tests::test_zero_elements ... ok
[INFO] [stdout] test take::tests::test_zero_lines ... ok
[INFO] [stdout] test tests::test_args_modes ... 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 parse::tests::test_parse_obsolete_no_match ... ok
[INFO] [stdout] test take::tests::test_fewer_elements ... ok
[INFO] [stdout] test lines::tests::test_null_terminated ... ok
[INFO] [stdout] test tests::read_early_exit ... ok
[INFO] [stdout] test parse::tests::test_parse_errors_obsolete ... ok
[INFO] [stdout] test tests::test_gnu_compatibility ... ok
[INFO] [stdout] test tests::test_options_correct_defaults ... ok
[INFO] [stdout] test tests::all_args_test ... ok
[INFO] [stdout] test tests::test_arg_iterate ... ok
[INFO] [stdout] test tests::test_parse_mode ... ok
[INFO] [stdout] test tests::test_options_errors ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[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] [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 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f4ebccb602078e80cbc2526b6810fa4813917df0b1a9ec111687f57a77b6d841", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4ebccb602078e80cbc2526b6810fa4813917df0b1a9ec111687f57a77b6d841", kill_on_drop: false }`
[INFO] [stdout] f4ebccb602078e80cbc2526b6810fa4813917df0b1a9ec111687f57a77b6d841