[INFO] fetching crate double-checked-cell 2.1.0...
[INFO] checking double-checked-cell-2.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate double-checked-cell 2.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate double-checked-cell 2.1.0
[INFO] finished tweaking crates.io crate double-checked-cell 2.1.0
[INFO] tweaked toml for crates.io crate double-checked-cell 2.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate double-checked-cell 2.1.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[INFO] [stderr]       Adding parking_lot v0.11.2 (available: v0.12.5)
[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] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[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] ff9f65556fd602743ecf62d9bcf69b886bbf1f92c7dc8a6fc5c62046825d576f
[INFO] running `Command { std: "docker" "start" "-a" "ff9f65556fd602743ecf62d9bcf69b886bbf1f92c7dc8a6fc5c62046825d576f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff9f65556fd602743ecf62d9bcf69b886bbf1f92c7dc8a6fc5c62046825d576f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff9f65556fd602743ecf62d9bcf69b886bbf1f92c7dc8a6fc5c62046825d576f", kill_on_drop: false }`
[INFO] [stdout] ff9f65556fd602743ecf62d9bcf69b886bbf1f92c7dc8a6fc5c62046825d576f
[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] 72390966af9dce57a558d1cd0bcb11d62df950915a3a699ffaef83caef056d80
[INFO] running `Command { std: "docker" "start" "-a" "72390966af9dce57a558d1cd0bcb11d62df950915a3a699ffaef83caef056d80", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking scopeguard v0.1.2
[INFO] [stderr]     Checking variance v0.1.3
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking double-checked-cell v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking scoped-pool v1.0.0
[INFO] [stdout] error: this type will no longer be must used: Result<&T, Void>
[INFO] [stdout]    --> src/lib.rs:225:9
[INFO] [stdout]     |
[INFO] [stdout] 225 |         self.get_or_try_init(|| Ok(init())).void_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 `double-checked-cell` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "72390966af9dce57a558d1cd0bcb11d62df950915a3a699ffaef83caef056d80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72390966af9dce57a558d1cd0bcb11d62df950915a3a699ffaef83caef056d80", kill_on_drop: false }`
[INFO] [stdout] 72390966af9dce57a558d1cd0bcb11d62df950915a3a699ffaef83caef056d80