[INFO] cloning repository https://github.com/kivensoft/minidns
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kivensoft/minidns" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkivensoft%2Fminidns", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkivensoft%2Fminidns'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ea9e9f1c228d3d6a1e5f7ad777f6306a2935ce0
[INFO] checking kivensoft/minidns against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkivensoft%2Fminidns" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kivensoft/minidns 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/kivensoft/minidns
[INFO] finished tweaking git repo https://github.com/kivensoft/minidns
[INFO] tweaked toml for git repo https://github.com/kivensoft/minidns written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kivensoft/minidns 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded anyhow v1.0.69
[INFO] [stderr]   Downloaded iana-time-zone v0.1.56
[INFO] [stderr]   Downloaded syn v2.0.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 6e470e97ac2815388444119bef08165f955843fe44d344914b9f8565b1f2d74e
[INFO] running `Command { std: "docker" "start" "-a" "6e470e97ac2815388444119bef08165f955843fe44d344914b9f8565b1f2d74e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e470e97ac2815388444119bef08165f955843fe44d344914b9f8565b1f2d74e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e470e97ac2815388444119bef08165f955843fe44d344914b9f8565b1f2d74e", kill_on_drop: false }`
[INFO] [stdout] 6e470e97ac2815388444119bef08165f955843fe44d344914b9f8565b1f2d74e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 88b6e369330afe34acd8382b625917af5cbf5cf2d17a7a36c57f10bd57386ad8
[INFO] running `Command { std: "docker" "start" "-a" "88b6e369330afe34acd8382b625917af5cbf5cf2d17a7a36c57f10bd57386ad8", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]    Compiling anyhow v1.0.69
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking iana-time-zone v0.1.56
[INFO] [stderr]     Checking ansicolor v1.0.0 (/opt/rustwide/workdir/ansicolor)
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking chrono v0.4.24
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking appconfig v1.0.0 (/opt/rustwide/workdir/appconfig)
[INFO] [stderr]     Checking asynclog v1.0.0 (/opt/rustwide/workdir/asynclog)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> asynclog/src/lib.rs:247:17
[INFO] [stdout]     |
[INFO] [stdout] 247 |                 drop(fileout);
[INFO] [stdout]     |                 ^^^^^-------^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      argument has type `&mut LogWriter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking minidns v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.10s
[INFO] running `Command { std: "docker" "inspect" "88b6e369330afe34acd8382b625917af5cbf5cf2d17a7a36c57f10bd57386ad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88b6e369330afe34acd8382b625917af5cbf5cf2d17a7a36c57f10bd57386ad8", kill_on_drop: false }`
[INFO] [stdout] 88b6e369330afe34acd8382b625917af5cbf5cf2d17a7a36c57f10bd57386ad8
[INFO] checking kivensoft/minidns against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkivensoft%2Fminidns" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kivensoft/minidns on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kivensoft/minidns
[INFO] finished tweaking git repo https://github.com/kivensoft/minidns
[INFO] tweaked toml for git repo https://github.com/kivensoft/minidns written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kivensoft/minidns 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 174dd5ba30e51087a99ef6f0f2f8501cfbf9ec0e67506faee8f72b128ef342ad
[INFO] running `Command { std: "docker" "start" "-a" "174dd5ba30e51087a99ef6f0f2f8501cfbf9ec0e67506faee8f72b128ef342ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "174dd5ba30e51087a99ef6f0f2f8501cfbf9ec0e67506faee8f72b128ef342ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "174dd5ba30e51087a99ef6f0f2f8501cfbf9ec0e67506faee8f72b128ef342ad", kill_on_drop: false }`
[INFO] [stdout] 174dd5ba30e51087a99ef6f0f2f8501cfbf9ec0e67506faee8f72b128ef342ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d3b36b9445b5f49190120906a6562720facef0d943d2a66bb56fb42bb82c34f
[INFO] running `Command { std: "docker" "start" "-a" "5d3b36b9445b5f49190120906a6562720facef0d943d2a66bb56fb42bb82c34f", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.69
[INFO] [stderr]     Checking iana-time-zone v0.1.56
[INFO] [stderr]     Checking ansicolor v1.0.0 (/opt/rustwide/workdir/ansicolor)
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking chrono v0.4.24
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking asynclog v1.0.0 (/opt/rustwide/workdir/asynclog)
[INFO] [stderr]     Checking appconfig v1.0.0 (/opt/rustwide/workdir/appconfig)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> asynclog/src/lib.rs:247:17
[INFO] [stdout]     |
[INFO] [stdout] 247 |                 drop(fileout);
[INFO] [stdout]     |                 ^^^^^-------^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      argument has type `&mut LogWriter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking minidns v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.77s
[INFO] running `Command { std: "docker" "inspect" "5d3b36b9445b5f49190120906a6562720facef0d943d2a66bb56fb42bb82c34f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d3b36b9445b5f49190120906a6562720facef0d943d2a66bb56fb42bb82c34f", kill_on_drop: false }`
[INFO] [stdout] 5d3b36b9445b5f49190120906a6562720facef0d943d2a66bb56fb42bb82c34f