[INFO] fetching crate msg_store_database_leveldb_plugin 0.1.0...
[INFO] checking msg_store_database_leveldb_plugin-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate msg_store_database_leveldb_plugin 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate msg_store_database_leveldb_plugin 0.1.0
[INFO] finished tweaking crates.io crate msg_store_database_leveldb_plugin 0.1.0
[INFO] tweaked toml for crates.io crate msg_store_database_leveldb_plugin 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate msg_store_database_leveldb_plugin 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 23 packages to latest compatible versions
[INFO] [stderr]       Adding bincode v1.3.3 (available: v2.0.1)
[INFO] [stderr]       Adding db-key v0.0.5 (available: v0.1.0)
[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-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3125d4c4f5639f4e38610dd1d536dc8de9a608b430db3d7bdecc025b79df5907
[INFO] running `Command { std: "docker" "start" "-a" "3125d4c4f5639f4e38610dd1d536dc8de9a608b430db3d7bdecc025b79df5907", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3125d4c4f5639f4e38610dd1d536dc8de9a608b430db3d7bdecc025b79df5907", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3125d4c4f5639f4e38610dd1d536dc8de9a608b430db3d7bdecc025b79df5907", kill_on_drop: false }`
[INFO] [stdout] 3125d4c4f5639f4e38610dd1d536dc8de9a608b430db3d7bdecc025b79df5907
[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 -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] a3d4e2d93ce459f1c5fbb0ef1d3aeab9fceb83d45afd5a2c4efd8bd66c3c7c2f
[INFO] running `Command { std: "docker" "start" "-a" "a3d4e2d93ce459f1c5fbb0ef1d3aeab9fceb83d45afd5a2c4efd8bd66c3c7c2f", kill_on_drop: false }`
[INFO] [stderr]     Checking ffi-opaque v2.0.1
[INFO] [stderr]     Checking msg_store_uuid v0.1.0
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]     Checking db-key v0.0.5
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking msg-store v0.9.1
[INFO] [stderr]    Compiling leveldb-sys v2.0.9
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking msg_store_database_plugin v0.1.0
[INFO] [stderr]     Checking leveldb v0.8.6
[INFO] [stderr]     Checking msg_store_database_leveldb_plugin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> src/lib.rs:179:23
[INFO] [stdout]     |
[INFO] [stdout] 179 |         let tmp_dir = PathBuf::from_str(&format!("/tmp/msg-store-plugin-leveldb")).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 `msg_store_database_leveldb_plugin` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "a3d4e2d93ce459f1c5fbb0ef1d3aeab9fceb83d45afd5a2c4efd8bd66c3c7c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3d4e2d93ce459f1c5fbb0ef1d3aeab9fceb83d45afd5a2c4efd8bd66c3c7c2f", kill_on_drop: false }`
[INFO] [stdout] a3d4e2d93ce459f1c5fbb0ef1d3aeab9fceb83d45afd5a2c4efd8bd66c3c7c2f