[INFO] fetching crate concurrency_traits 0.7.2... [INFO] checking concurrency_traits-0.7.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate concurrency_traits 0.7.2 into /workspace/builds/worker-4-tc2/source [INFO] started tweaking crates.io crate concurrency_traits 0.7.2 [INFO] finished tweaking crates.io crate concurrency_traits 0.7.2 [INFO] tweaked toml for crates.io crate concurrency_traits 0.7.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate concurrency_traits 0.7.2 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] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 39 packages to latest compatible versions [INFO] [stderr] Adding parking_lot v0.11.2 (available: v0.12.5) [INFO] [stderr] Adding rand v0.8.5 (available: v0.9.2) [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] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bfed48cdce61ea681304ec4021fefa26c72f4e2605a5f6b2e61ef256759e8640 [INFO] running `Command { std: "docker" "start" "-a" "bfed48cdce61ea681304ec4021fefa26c72f4e2605a5f6b2e61ef256759e8640", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "bfed48cdce61ea681304ec4021fefa26c72f4e2605a5f6b2e61ef256759e8640", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bfed48cdce61ea681304ec4021fefa26c72f4e2605a5f6b2e61ef256759e8640", kill_on_drop: false }` [INFO] [stdout] bfed48cdce61ea681304ec4021fefa26c72f4e2605a5f6b2e61ef256759e8640 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f7921f9db4c7c1623d9ae7f25d6864e34411b51648496dc70e08e527116645d0 [INFO] running `Command { std: "docker" "start" "-a" "f7921f9db4c7c1623d9ae7f25d6864e34411b51648496dc70e08e527116645d0", kill_on_drop: false }` [INFO] [stderr] Checking atomic_swapping v0.1.0 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking num-complex v0.4.6 [INFO] [stderr] Compiling syn v2.0.110 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking simple_futures v0.1.2 [INFO] [stderr] Checking num-rational v0.4.2 [INFO] [stderr] Checking num-iter v0.1.45 [INFO] [stderr] Checking num v0.4.3 [INFO] [stderr] Compiling async-trait v0.1.89 [INFO] [stderr] Checking concurrency_traits v0.7.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait `EnsureSend` is never used [INFO] [stdout] --> src/lib.rs:21:7 [INFO] [stdout] | [INFO] [stdout] 21 | trait EnsureSend: Send {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `EnsureSync` is never used [INFO] [stdout] --> src/lib.rs:22:7 [INFO] [stdout] | [INFO] [stdout] 22 | trait EnsureSync: Sync {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result<>::ThreadHandle, std::convert::Infallible> [INFO] [stdout] --> src/lib.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | Self::try_spawn(func).unwrap() [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<::Output, std::convert::Infallible> [INFO] [stdout] --> src/lib.rs:153:13 [INFO] [stdout] | [INFO] [stdout] 153 | self.try_join().unwrap() [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, std::convert::Infallible> [INFO] [stdout] --> src/lib.rs:210:59 [INFO] [stdout] | [INFO] [stdout] 210 | ) -> Result { [INFO] [stdout] | ___________________________________________________________^ [INFO] [stdout] 211 | | Ok(std::thread::spawn(func)) [INFO] [stdout] 212 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, std::convert::Infallible> [INFO] [stdout] --> src/lib.rs:211:13 [INFO] [stdout] | [INFO] [stdout] 211 | Ok(std::thread::spawn(func)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `EnsureSend` is never used [INFO] [stdout] --> src/lib.rs:21:7 [INFO] [stdout] | [INFO] [stdout] 21 | trait EnsureSend: Send {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `EnsureSync` is never used [INFO] [stdout] --> src/lib.rs:22:7 [INFO] [stdout] | [INFO] [stdout] 22 | trait EnsureSync: Sync {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result<>::ThreadHandle, std::convert::Infallible> [INFO] [stdout] --> src/lib.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | Self::try_spawn(func).unwrap() [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<::Output, std::convert::Infallible> [INFO] [stdout] --> src/lib.rs:153:13 [INFO] [stdout] | [INFO] [stdout] 153 | self.try_join().unwrap() [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `concurrency_traits` (lib test) due to 4 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this type will no longer be must used: Result, std::convert::Infallible> [INFO] [stdout] --> src/lib.rs:210:59 [INFO] [stdout] | [INFO] [stdout] 210 | ) -> Result { [INFO] [stdout] | ___________________________________________________________^ [INFO] [stdout] 211 | | Ok(std::thread::spawn(func)) [INFO] [stdout] 212 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, std::convert::Infallible> [INFO] [stdout] --> src/lib.rs:211:13 [INFO] [stdout] | [INFO] [stdout] 211 | Ok(std::thread::spawn(func)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `concurrency_traits` (lib) due to 4 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "f7921f9db4c7c1623d9ae7f25d6864e34411b51648496dc70e08e527116645d0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f7921f9db4c7c1623d9ae7f25d6864e34411b51648496dc70e08e527116645d0", kill_on_drop: false }` [INFO] [stdout] f7921f9db4c7c1623d9ae7f25d6864e34411b51648496dc70e08e527116645d0