[INFO] fetching crate fugue-mptp 0.3.0... [INFO] checking fugue-mptp-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate fugue-mptp 0.3.0 into /workspace/builds/worker-6-tc2/source [INFO] started tweaking crates.io crate fugue-mptp 0.3.0 [INFO] finished tweaking crates.io crate fugue-mptp 0.3.0 [INFO] tweaked toml for crates.io crate fugue-mptp 0.3.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate fugue-mptp 0.3.0 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 85 packages to latest compatible versions [INFO] [stderr] Adding ipc-channel v0.19.0 (available: v0.20.2) [INFO] [stderr] Adding nix v0.29.0 (available: v0.30.1) [INFO] [stderr] Adding rand v0.8.5 (available: v0.9.2) [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-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 349741f3e5aeefa1c492992f749a353dbce0ad06f080c9c62bc420067e055a4e [INFO] running `Command { std: "docker" "start" "-a" "349741f3e5aeefa1c492992f749a353dbce0ad06f080c9c62bc420067e055a4e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "349741f3e5aeefa1c492992f749a353dbce0ad06f080c9c62bc420067e055a4e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "349741f3e5aeefa1c492992f749a353dbce0ad06f080c9c62bc420067e055a4e", kill_on_drop: false }` [INFO] [stdout] 349741f3e5aeefa1c492992f749a353dbce0ad06f080c9c62bc420067e055a4e [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 -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] 7fa0c2df1c80ae68f712d998acfd76c58503ab2b0757b77a9af3a45a7509eca5 [INFO] running `Command { std: "docker" "start" "-a" "7fa0c2df1c80ae68f712d998acfd76c58503ab2b0757b77a9af3a45a7509eca5", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.177 [INFO] [stderr] Compiling serde_core v1.0.228 [INFO] [stderr] Compiling zerocopy v0.8.27 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling getrandom v0.3.4 [INFO] [stderr] Checking bitflags v2.10.0 [INFO] [stderr] Compiling crossbeam-utils v0.8.21 [INFO] [stderr] Compiling rustix v1.1.2 [INFO] [stderr] Checking linux-raw-sys v0.11.0 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling cfg_aliases v0.2.1 [INFO] [stderr] Checking lock_api v0.4.14 [INFO] [stderr] Checking fastrand v2.3.0 [INFO] [stderr] Checking once_cell v1.21.3 [INFO] [stderr] Compiling syn v2.0.110 [INFO] [stderr] Compiling thiserror v1.0.69 [INFO] [stderr] Compiling nix v0.29.0 [INFO] [stderr] Compiling anyhow v1.0.100 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Checking futures-core v0.3.31 [INFO] [stderr] Checking spin v0.9.8 [INFO] [stderr] Checking futures-sink v0.3.31 [INFO] [stderr] Checking walkdir v2.5.0 [INFO] [stderr] Checking easy-parallel v3.3.1 [INFO] [stderr] Checking crossbeam-channel v0.5.15 [INFO] [stderr] Checking rmp v0.8.14 [INFO] [stderr] Checking getrandom v0.2.16 [INFO] [stderr] Checking mio v1.1.0 [INFO] [stderr] Checking num_cpus v1.17.0 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking nanorand v0.7.0 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling thiserror-impl v1.0.69 [INFO] [stderr] Checking ppv-lite86 v0.2.21 [INFO] [stderr] Checking tempfile v3.23.0 [INFO] [stderr] Checking flume v0.11.1 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking uuid v1.18.1 [INFO] [stderr] Checking rmp-serde v1.3.0 [INFO] [stderr] Checking ipc-channel v0.19.0 [INFO] [stderr] Checking fugue-mptp v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/lib.rs:313:86 [INFO] [stdout] | [INFO] [stdout] 313 | fn next_task(&mut self, id: Uuid) -> Result, Self::Error> { [INFO] [stdout] | ______________________________________________________________________________________^ [INFO] [stdout] 314 | | if self.counter >= self.limit { [INFO] [stdout] 315 | | return Ok(None); [INFO] [stdout] ... | [INFO] [stdout] 320 | | Ok(Some(format!("{}:{id}", self.counter))) [INFO] [stdout] 321 | | } [INFO] [stdout] | |_____________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/lib.rs:315:28 [INFO] [stdout] | [INFO] [stdout] 315 | return Ok(None); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/lib.rs:320:17 [INFO] [stdout] | [INFO] [stdout] 320 | Ok(Some(format!("{}:{id}", self.counter))) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `fugue-mptp` (lib test) due to 3 previous errors [INFO] running `Command { std: "docker" "inspect" "7fa0c2df1c80ae68f712d998acfd76c58503ab2b0757b77a9af3a45a7509eca5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7fa0c2df1c80ae68f712d998acfd76c58503ab2b0757b77a9af3a45a7509eca5", kill_on_drop: false }` [INFO] [stdout] 7fa0c2df1c80ae68f712d998acfd76c58503ab2b0757b77a9af3a45a7509eca5