[INFO] fetching crate dagx 0.3.1...
[INFO] checking dagx-0.3.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate dagx 0.3.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate dagx 0.3.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate dagx 0.3.1
[INFO] tweaked toml for crates.io crate dagx 0.3.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dagx 0.3.1 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] crate crates.io crate dagx 0.3.1 already has a lockfile, it will not be regenerated
[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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 4733e924255956ca93a0c4ffdc523c77b6d19d09b59c5ddea3195445ecb07e9b
[INFO] running `Command { std: "docker" "start" "-a" "4733e924255956ca93a0c4ffdc523c77b6d19d09b59c5ddea3195445ecb07e9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4733e924255956ca93a0c4ffdc523c77b6d19d09b59c5ddea3195445ecb07e9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4733e924255956ca93a0c4ffdc523c77b6d19d09b59c5ddea3195445ecb07e9b", kill_on_drop: false }`
[INFO] [stdout] 4733e924255956ca93a0c4ffdc523c77b6d19d09b59c5ddea3195445ecb07e9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 7079f31aae1815cafae5a954a4bb582b59399af5598ef9e631fb9ad852f3d660
[INFO] running `Command { std: "docker" "start" "-a" "7079f31aae1815cafae5a954a4bb582b59399af5598ef9e631fb9ad852f3d660", kill_on_drop: false }`
[INFO] [stderr]     Checking rustix v1.1.2
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking regex-automata v0.4.11
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking clap_builder v4.5.48
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking async-fs v2.2.0
[INFO] [stderr]     Checking oorandom v11.1.5
[INFO] [stderr]     Checking pollster v0.4.0
[INFO] [stderr]     Checking plotters-svg v0.3.7
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking criterion-plot v0.6.0
[INFO] [stderr]     Checking clap v4.5.48
[INFO] [stderr]     Checking matchers v0.2.0
[INFO] [stderr]     Checking regex v1.11.3
[INFO] [stderr]     Checking tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]     Checking polling v3.11.0
[INFO] [stderr]     Checking async-io v2.6.0
[INFO] [stderr]     Checking async-signal v0.2.13
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking async-net v2.0.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling dagx-macros v0.3.1
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]     Checking async-process v2.5.0
[INFO] [stderr]     Checking async-std v1.13.2
[INFO] [stderr]     Checking smol v2.0.2
[INFO] [stderr]     Checking tokio v1.47.1
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking criterion v0.7.0
[INFO] [stderr]     Checking dagrs v0.5.0
[INFO] [stderr]     Checking dagx v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Never>
[INFO] [stdout]    --> tests/boundaries/zero_tasks.rs:180:51
[INFO] [stdout]     |
[INFO] [stdout] 180 |     let task = dag.add_task(task_fn(|_: ()| async { Result::<i32, Never>::Ok(42) }));
[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<i32, Never>
[INFO] [stdout]    --> tests/boundaries/zero_tasks.rs:180:53
[INFO] [stdout]     |
[INFO] [stdout] 180 |     let task = dag.add_task(task_fn(|_: ()| async { Result::<i32, Never>::Ok(42) }));
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Never>
[INFO] [stdout]    --> tests/boundaries/zero_tasks.rs:187:16
[INFO] [stdout]     |
[INFO] [stdout] 187 |     assert_eq!(dag.get(&task)?, Ok(42));
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Never>
[INFO] [stdout]    --> tests/boundaries/zero_tasks.rs:187:33
[INFO] [stdout]     |
[INFO] [stdout] 187 |     assert_eq!(dag.get(&task)?, Ok(42));
[INFO] [stdout]     |                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Never>
[INFO] [stdout]    --> tests/boundaries/zero_tasks.rs:187:5
[INFO] [stdout]     |
[INFO] [stdout] 187 |     assert_eq!(dag.get(&task)?, Ok(42));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Never>
[INFO] [stdout]    --> tests/boundaries/zero_tasks.rs:187:5
[INFO] [stdout]     |
[INFO] [stdout] 187 |     assert_eq!(dag.get(&task)?, Ok(42));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Never>
[INFO] [stdout]    --> tests/boundaries/zero_tasks.rs:187:5
[INFO] [stdout]     |
[INFO] [stdout] 187 |     assert_eq!(dag.get(&task)?, Ok(42));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Never>
[INFO] [stdout]    --> tests/boundaries/zero_tasks.rs:187:5
[INFO] [stdout]     |
[INFO] [stdout] 187 |     assert_eq!(dag.get(&task)?, Ok(42));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dagx` (test "lib_tests") due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "7079f31aae1815cafae5a954a4bb582b59399af5598ef9e631fb9ad852f3d660", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7079f31aae1815cafae5a954a4bb582b59399af5598ef9e631fb9ad852f3d660", kill_on_drop: false }`
[INFO] [stdout] 7079f31aae1815cafae5a954a4bb582b59399af5598ef9e631fb9ad852f3d660