[INFO] cloning repository https://github.com/ukcrpb6/zookeeper-registrar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ukcrpb6/zookeeper-registrar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fukcrpb6%2Fzookeeper-registrar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fukcrpb6%2Fzookeeper-registrar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dbb0f6d00a54fda37fe4a09c2f68089e2b468250
[INFO] checking ukcrpb6/zookeeper-registrar against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fukcrpb6%2Fzookeeper-registrar" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ukcrpb6/zookeeper-registrar on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ukcrpb6/zookeeper-registrar
[INFO] finished tweaking git repo https://github.com/ukcrpb6/zookeeper-registrar
[INFO] tweaked toml for git repo https://github.com/ukcrpb6/zookeeper-registrar written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ukcrpb6/zookeeper-registrar already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded slab v0.1.3
[INFO] [stderr]   Downloaded bitflags v0.4.0
[INFO] [stderr]   Downloaded nix v0.5.1
[INFO] [stderr]   Downloaded snowflake v1.3.0
[INFO] [stderr]   Downloaded atty v0.2.8
[INFO] [stderr]   Downloaded ctrlc v3.1.0
[INFO] [stderr]   Downloaded env_logger v0.5.6
[INFO] [stderr]   Downloaded syn v0.12.14
[INFO] [stderr]   Downloaded nix v0.9.0
[INFO] [stderr]   Downloaded regex-syntax v0.5.3
[INFO] [stderr]   Downloaded regex v0.2.10
[INFO] [stderr]   Downloaded libc v0.2.39
[INFO] [stderr]   Downloaded zookeeper v0.4.0
[INFO] [stderr]   Downloaded uuid v0.6.1
[INFO] [stderr]   Downloaded zookeeper_derive v0.3.0
[INFO] [stderr]   Downloaded docopt v0.8.3
[INFO] [stderr]   Downloaded serde_derive v1.0.33
[INFO] [stderr]   Downloaded num-traits v0.2.2
[INFO] [stderr]   Downloaded serde v1.0.33
[INFO] [stderr]   Downloaded serde_json v1.0.12
[INFO] [stderr]   Downloaded mio v0.5.1
[INFO] [stderr]   Downloaded serde_derive_internals v0.21.0
[INFO] [stderr]   Downloaded itoa v0.4.0
[INFO] [stderr]   Downloaded bytes v0.3.0
[INFO] [stderr]   Downloaded byteorder v0.4.2
[INFO] [stderr]   Downloaded miow v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0eda6a8c258c2ceb60268f12fe2f2c69b41bd2a16d7fad322e2143ef6db8cc7
[INFO] running `Command { std: "docker" "start" "-a" "f0eda6a8c258c2ceb60268f12fe2f2c69b41bd2a16d7fad322e2143ef6db8cc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0eda6a8c258c2ceb60268f12fe2f2c69b41bd2a16d7fad322e2143ef6db8cc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0eda6a8c258c2ceb60268f12fe2f2c69b41bd2a16d7fad322e2143ef6db8cc7", kill_on_drop: false }`
[INFO] [stdout] f0eda6a8c258c2ceb60268f12fe2f2c69b41bd2a16d7fad322e2143ef6db8cc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c60e8ef084360818934c0c9ecd544050a320ffd4466cfe9ccdd5bd5c8023abe
[INFO] running `Command { std: "docker" "start" "-a" "1c60e8ef084360818934c0c9ecd544050a320ffd4466cfe9ccdd5bd5c8023abe", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.39
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking regex-syntax v0.5.3
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking quick-error v1.2.1
[INFO] [stderr]     Checking serde v1.0.33
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]     Checking slab v0.1.3
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]    Compiling syn v0.12.14
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking miow v0.1.5
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking snowflake v1.3.0
[INFO] [stderr]     Checking byteorder v0.4.2
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking itoa v0.4.0
[INFO] [stderr]     Checking lazy_static v0.1.16
[INFO] [stderr]     Checking termcolor v0.3.5
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking uuid v0.6.1
[INFO] [stderr]    Compiling zookeeper_derive v0.3.0
[INFO] [stderr]    Compiling serde_derive_internals v0.21.0
[INFO] [stderr]     Checking mio v0.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.33
[INFO] [stderr]     Checking env_logger v0.5.6
[INFO] [stderr]     Checking zookeeper v0.4.0
[INFO] [stderr]     Checking ctrlc v3.1.0
[INFO] [stderr]     Checking serde_json v1.0.12
[INFO] [stderr]     Checking docopt v0.8.3
[INFO] [stderr]     Checking zookeeper-registrar v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.61s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.12.14
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "1c60e8ef084360818934c0c9ecd544050a320ffd4466cfe9ccdd5bd5c8023abe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c60e8ef084360818934c0c9ecd544050a320ffd4466cfe9ccdd5bd5c8023abe", kill_on_drop: false }`
[INFO] [stdout] 1c60e8ef084360818934c0c9ecd544050a320ffd4466cfe9ccdd5bd5c8023abe
[INFO] checking ukcrpb6/zookeeper-registrar against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fukcrpb6%2Fzookeeper-registrar" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ukcrpb6/zookeeper-registrar on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ukcrpb6/zookeeper-registrar
[INFO] finished tweaking git repo https://github.com/ukcrpb6/zookeeper-registrar
[INFO] tweaked toml for git repo https://github.com/ukcrpb6/zookeeper-registrar written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ukcrpb6/zookeeper-registrar already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fcdccd9dfd4ae7a58aa1bd42879f168683ad02b78c82d6bc906716a096bd9233
[INFO] running `Command { std: "docker" "start" "-a" "fcdccd9dfd4ae7a58aa1bd42879f168683ad02b78c82d6bc906716a096bd9233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcdccd9dfd4ae7a58aa1bd42879f168683ad02b78c82d6bc906716a096bd9233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcdccd9dfd4ae7a58aa1bd42879f168683ad02b78c82d6bc906716a096bd9233", kill_on_drop: false }`
[INFO] [stdout] fcdccd9dfd4ae7a58aa1bd42879f168683ad02b78c82d6bc906716a096bd9233
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a851c9cc473c5c46a179e42bc33442d554e1f5d15dbaa8d3ea1fac1b592884e2
[INFO] running `Command { std: "docker" "start" "-a" "a851c9cc473c5c46a179e42bc33442d554e1f5d15dbaa8d3ea1fac1b592884e2", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.39
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking regex-syntax v0.5.3
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]    Compiling syn v0.12.14
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking serde v1.0.33
[INFO] [stderr]     Checking miow v0.1.5
[INFO] [stderr]     Checking quick-error v1.2.1
[INFO] [stderr]     Checking slab v0.1.3
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking lazy_static v0.1.16
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking byteorder v0.4.2
[INFO] [stderr]     Checking snowflake v1.3.0
[INFO] [stderr]     Checking itoa v0.4.0
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking termcolor v0.3.5
[INFO] [stderr]     Checking mio v0.5.1
[INFO] [stderr]     Checking uuid v0.6.1
[INFO] [stderr]    Compiling zookeeper_derive v0.3.0
[INFO] [stderr]     Checking env_logger v0.5.6
[INFO] [stderr]    Compiling serde_derive_internals v0.21.0
[INFO] [stderr]     Checking zookeeper v0.4.0
[INFO] [stderr]     Checking ctrlc v3.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.33
[INFO] [stderr]     Checking serde_json v1.0.12
[INFO] [stderr]     Checking docopt v0.8.3
[INFO] [stderr]     Checking zookeeper-registrar v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.17s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.12.14
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "a851c9cc473c5c46a179e42bc33442d554e1f5d15dbaa8d3ea1fac1b592884e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a851c9cc473c5c46a179e42bc33442d554e1f5d15dbaa8d3ea1fac1b592884e2", kill_on_drop: false }`
[INFO] [stdout] a851c9cc473c5c46a179e42bc33442d554e1f5d15dbaa8d3ea1fac1b592884e2