[INFO] fetching crate maxminddb-writer 0.1.0...
[INFO] checking maxminddb-writer-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate maxminddb-writer 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate maxminddb-writer 0.1.0
[INFO] finished tweaking crates.io crate maxminddb-writer 0.1.0
[INFO] tweaked toml for crates.io crate maxminddb-writer 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate maxminddb-writer 0.1.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] [stderr]       Adding maxminddb v0.23.0 (available: v0.26.0)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3dd9436f694db05bf4732f5bccddfafa49edc20f58b3f6f466d4dd964aaf453e
[INFO] running `Command { std: "docker" "start" "-a" "3dd9436f694db05bf4732f5bccddfafa49edc20f58b3f6f466d4dd964aaf453e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3dd9436f694db05bf4732f5bccddfafa49edc20f58b3f6f466d4dd964aaf453e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dd9436f694db05bf4732f5bccddfafa49edc20f58b3f6f466d4dd964aaf453e", kill_on_drop: false }`
[INFO] [stdout] 3dd9436f694db05bf4732f5bccddfafa49edc20f58b3f6f466d4dd964aaf453e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcdcf99fb001c32b8e98b25481f3aaaa9724e4a5ada4da7506bdc97206a23ba7
[INFO] running `Command { std: "docker" "start" "-a" "dcdcf99fb001c32b8e98b25481f3aaaa9724e4a5ada4da7506bdc97206a23ba7", kill_on_drop: false }`
[INFO] [stderr]     Checking ipnetwork v0.18.0
[INFO] [stderr]     Checking maxminddb-writer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking maxminddb v0.23.0
[INFO] [stdout] error: this type will no longer be must used: Result<std::net::IpAddr, Infallible>
[INFO] [stdout]    --> src/serializer.rs:591:51
[INFO] [stdout]     |
[INFO] [stdout] 591 |         let deserialized_value: T = reader.lookup([0, 0, 0, 0].try_into().unwrap()).unwrap();
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `maxminddb-writer` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "dcdcf99fb001c32b8e98b25481f3aaaa9724e4a5ada4da7506bdc97206a23ba7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcdcf99fb001c32b8e98b25481f3aaaa9724e4a5ada4da7506bdc97206a23ba7", kill_on_drop: false }`
[INFO] [stdout] dcdcf99fb001c32b8e98b25481f3aaaa9724e4a5ada4da7506bdc97206a23ba7