[INFO] cloning repository https://github.com/yangtau/betterdns
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yangtau/betterdns" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangtau%2Fbetterdns", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangtau%2Fbetterdns'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9c90186d294074cce6fbf308ee2cea7340a4381
[INFO] checking yangtau/betterdns against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangtau%2Fbetterdns" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yangtau/betterdns 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/yangtau/betterdns
[INFO] finished tweaking git repo https://github.com/yangtau/betterdns
[INFO] tweaked toml for git repo https://github.com/yangtau/betterdns written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yangtau/betterdns 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]  Downloading crates ...
[INFO] [stderr]   Downloaded ipconfig v0.3.2
[INFO] [stderr]   Downloaded widestring v1.0.2
[INFO] [stderr]   Downloaded enum-as-inner v0.6.0
[INFO] [stderr]   Downloaded trust-dns-resolver v0.23.2
[INFO] [stderr]   Downloaded trust-dns-proto v0.23.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 4ab304cf20d745d7017cd0cf43dabe3b85c1628f01967c18bfba768eebfca444
[INFO] running `Command { std: "docker" "start" "-a" "4ab304cf20d745d7017cd0cf43dabe3b85c1628f01967c18bfba768eebfca444", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ab304cf20d745d7017cd0cf43dabe3b85c1628f01967c18bfba768eebfca444", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ab304cf20d745d7017cd0cf43dabe3b85c1628f01967c18bfba768eebfca444", kill_on_drop: false }`
[INFO] [stdout] 4ab304cf20d745d7017cd0cf43dabe3b85c1628f01967c18bfba768eebfca444
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 1eab4ed17d6ad99190a34391c1e6fafcb62abfafba49d7a785d7e053da70a27c
[INFO] running `Command { std: "docker" "start" "-a" "1eab4ed17d6ad99190a34391c1e6fafcb62abfafba49d7a785d7e053da70a27c", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling thiserror v1.0.57
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking anstream v0.6.13
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]     Checking env_filter v0.1.0
[INFO] [stderr]     Checking env_logger v0.11.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling enum-as-inner v0.6.0
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking trust-dns-proto v0.23.2
[INFO] [stderr]     Checking trust-dns-resolver v0.23.2
[INFO] [stderr]     Checking betterdns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.74s
[INFO] running `Command { std: "docker" "inspect" "1eab4ed17d6ad99190a34391c1e6fafcb62abfafba49d7a785d7e053da70a27c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eab4ed17d6ad99190a34391c1e6fafcb62abfafba49d7a785d7e053da70a27c", kill_on_drop: false }`
[INFO] [stdout] 1eab4ed17d6ad99190a34391c1e6fafcb62abfafba49d7a785d7e053da70a27c
[INFO] checking yangtau/betterdns against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangtau%2Fbetterdns" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yangtau/betterdns 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/yangtau/betterdns
[INFO] finished tweaking git repo https://github.com/yangtau/betterdns
[INFO] tweaked toml for git repo https://github.com/yangtau/betterdns written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/yangtau/betterdns 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 24180578d9d4346166b58024f468e3e99b125344d5504f972f5fa535e8ded985
[INFO] running `Command { std: "docker" "start" "-a" "24180578d9d4346166b58024f468e3e99b125344d5504f972f5fa535e8ded985", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24180578d9d4346166b58024f468e3e99b125344d5504f972f5fa535e8ded985", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24180578d9d4346166b58024f468e3e99b125344d5504f972f5fa535e8ded985", kill_on_drop: false }`
[INFO] [stdout] 24180578d9d4346166b58024f468e3e99b125344d5504f972f5fa535e8ded985
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] a04491ae8774eef3c9bbe108f06780743dce66c9a6a3730a472c1a38ec1c4de2
[INFO] running `Command { std: "docker" "start" "-a" "a04491ae8774eef3c9bbe108f06780743dce66c9a6a3730a472c1a38ec1c4de2", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling thiserror v1.0.57
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking anstream v0.6.13
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling thiserror-impl v1.0.57
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]    Compiling enum-as-inner v0.6.0
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]     Checking env_filter v0.1.0
[INFO] [stderr]     Checking env_logger v0.11.3
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking trust-dns-proto v0.23.2
[INFO] [stderr]     Checking trust-dns-resolver v0.23.2
[INFO] [stderr]     Checking betterdns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.95s
[INFO] running `Command { std: "docker" "inspect" "a04491ae8774eef3c9bbe108f06780743dce66c9a6a3730a472c1a38ec1c4de2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a04491ae8774eef3c9bbe108f06780743dce66c9a6a3730a472c1a38ec1c4de2", kill_on_drop: false }`
[INFO] [stdout] a04491ae8774eef3c9bbe108f06780743dce66c9a6a3730a472c1a38ec1c4de2