[INFO] fetching crate updb 0.1.0...
[INFO] building updb-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate updb 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate updb 0.1.0
[INFO] finished tweaking crates.io crate updb 0.1.0
[INFO] tweaked toml for crates.io crate updb 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate updb 0.1.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 42 packages to latest compatible versions
[INFO] [stderr]       Adding imbl v2.0.3 (available: v6.1.0)
[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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe2a11a9c49dc2715ed6bbe00aa1360ccc3f30a600ff2658f20c90a8df449ca6
[INFO] running `Command { std: "docker" "start" "-a" "fe2a11a9c49dc2715ed6bbe00aa1360ccc3f30a600ff2658f20c90a8df449ca6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe2a11a9c49dc2715ed6bbe00aa1360ccc3f30a600ff2658f20c90a8df449ca6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe2a11a9c49dc2715ed6bbe00aa1360ccc3f30a600ff2658f20c90a8df449ca6", kill_on_drop: false }`
[INFO] [stdout] fe2a11a9c49dc2715ed6bbe00aa1360ccc3f30a600ff2658f20c90a8df449ca6
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70f7130d7ef384504633f96191503584ae2d8541cb81b5136b8ba1b85fbbb61a
[INFO] running `Command { std: "docker" "start" "-a" "70f7130d7ef384504633f96191503584ae2d8541cb81b5136b8ba1b85fbbb61a", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitmaps v3.2.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling arc-swap v1.7.1
[INFO] [stderr]    Compiling rand_xoshiro v0.6.0
[INFO] [stderr]    Compiling imbl-sized-chunks v0.1.3
[INFO] [stderr]    Compiling imbl v2.0.3
[INFO] [stderr]    Compiling updb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/tx/mod.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             drop(lock);
[INFO] [stdout]    |             ^^^^^----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&OwnedMutexGuard<()>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 50 -             drop(lock);
[INFO] [stdout] 50 +             let _ = lock;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/tx/mod.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             drop(lock);
[INFO] [stdout]    |             ^^^^^----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&OwnedMutexGuard<()>`
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 70 -             drop(lock);
[INFO] [stdout] 70 +             let _ = lock;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.46s
[INFO] running `Command { std: "docker" "inspect" "70f7130d7ef384504633f96191503584ae2d8541cb81b5136b8ba1b85fbbb61a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70f7130d7ef384504633f96191503584ae2d8541cb81b5136b8ba1b85fbbb61a", kill_on_drop: false }`
[INFO] [stdout] 70f7130d7ef384504633f96191503584ae2d8541cb81b5136b8ba1b85fbbb61a
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1bedfc9a5d7033bd874ba539986908e0ac1548bdec14947cf4d9598b503f3b7
[INFO] running `Command { std: "docker" "start" "-a" "e1bedfc9a5d7033bd874ba539986908e0ac1548bdec14947cf4d9598b503f3b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling updb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/tx/mod.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             drop(lock);
[INFO] [stdout]    |             ^^^^^----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&OwnedMutexGuard<()>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 50 -             drop(lock);
[INFO] [stdout] 50 +             let _ = lock;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/tx/mod.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             drop(lock);
[INFO] [stdout]    |             ^^^^^----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&OwnedMutexGuard<()>`
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 70 -             drop(lock);
[INFO] [stdout] 70 +             let _ = lock;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/tx/mod.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             drop(lock);
[INFO] [stdout]    |             ^^^^^----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&OwnedMutexGuard<()>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 50 -             drop(lock);
[INFO] [stdout] 50 +             let _ = lock;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/tx/mod.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |             drop(lock);
[INFO] [stdout]    |             ^^^^^----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&OwnedMutexGuard<()>`
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 70 -             drop(lock);
[INFO] [stdout] 70 +             let _ = lock;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 7.38s
[INFO] running `Command { std: "docker" "inspect" "e1bedfc9a5d7033bd874ba539986908e0ac1548bdec14947cf4d9598b503f3b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1bedfc9a5d7033bd874ba539986908e0ac1548bdec14947cf4d9598b503f3b7", kill_on_drop: false }`
[INFO] [stdout] e1bedfc9a5d7033bd874ba539986908e0ac1548bdec14947cf4d9598b503f3b7