[INFO] fetching crate retworkx 0.8.0...
[INFO] checking retworkx-0.8.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate retworkx 0.8.0 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate retworkx 0.8.0
[INFO] finished tweaking crates.io crate retworkx 0.8.0
[INFO] tweaked toml for crates.io crate retworkx 0.8.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate retworkx 0.8.0 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 61 packages to latest compatible versions
[INFO] [stderr]       Adding fixedbitset v0.2.0 (available: v0.5.7)
[INFO] [stderr]       Adding hashbrown v0.9.1 (available: v0.16.0)
[INFO] [stderr]       Adding indoc-impl v0.3.6 (available: v0.3.7)
[INFO] [stderr]       Adding ndarray v0.13.1 (available: v0.17.1)
[INFO] [stderr]       Adding numpy v0.12.2 (available: v0.27.0)
[INFO] [stderr]       Adding petgraph v0.5.1 (available: v0.8.3)
[INFO] [stderr]       Adding pyo3 v0.12.4 (available: v0.27.1)
[INFO] [stderr]       Adding pyo3-derive-backend v0.12.4 (available: v0.12.5)
[INFO] [stderr]       Adding pyo3cls v0.12.4 (available: v0.12.5)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_pcg v0.3.1 (available: v0.9.0)
[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-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0607712adc55ad08c1f9b22f69d121dea7a1c22952bdca4bf15d5863b894e9ac
[INFO] running `Command { std: "docker" "start" "-a" "0607712adc55ad08c1f9b22f69d121dea7a1c22952bdca4bf15d5863b894e9ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0607712adc55ad08c1f9b22f69d121dea7a1c22952bdca4bf15d5863b894e9ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0607712adc55ad08c1f9b22f69d121dea7a1c22952bdca4bf15d5863b894e9ac", kill_on_drop: false }`
[INFO] [stdout] 0607712adc55ad08c1f9b22f69d121dea7a1c22952bdca4bf15d5863b894e9ac
[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 -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] ab047bc5427267e2a7e39efcf100a594992bba68891f64e9d96386589c896aad
[INFO] running `Command { std: "docker" "start" "-a" "ab047bc5427267e2a7e39efcf100a594992bba68891f64e9d96386589c896aad", kill_on_drop: false }`
[INFO] [stderr]    Compiling inventory v0.1.11
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling unindent v0.1.11
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling pyo3 v0.12.4
[INFO] [stderr]     Checking ahash v0.4.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling ghost v0.1.20
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]    Compiling pyo3-derive-backend v0.12.4
[INFO] [stderr]    Compiling inventory-impl v0.1.11
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]     Checking indoc v0.3.6
[INFO] [stderr]    Compiling pyo3cls v0.12.4
[INFO] [stderr]     Checking numpy v0.12.2
[INFO] [stderr]     Checking retworkx v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: std::ops::ControlFlow<Result<Infallible, Infallible>, PyClassInitializer<PyDiGraph>>
[INFO] [stdout]    --> src/digraph.rs:394:1
[INFO] [stdout]     |
[INFO] [stdout] 394 | #[pymethods]
[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<PyClassInitializer<PyDiGraph>, Infallible>
[INFO] [stdout]    --> src/digraph.rs:394:1
[INFO] [stdout]     |
[INFO] [stdout] 394 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `pymethods` (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: std::ops::ControlFlow<Result<Infallible, Infallible>, PyClassInitializer<PyGraph>>
[INFO] [stdout]    --> src/graph.rs:265:1
[INFO] [stdout]     |
[INFO] [stdout] 265 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PyClassInitializer<PyGraph>, Infallible>
[INFO] [stdout]    --> src/graph.rs:265:1
[INFO] [stdout]     |
[INFO] [stdout] 265 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `pymethods` (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: std::ops::ControlFlow<Result<Infallible, Infallible>, PyClassInitializer<BFSSuccessors>>
[INFO] [stdout]   --> src/iterators.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | #[pymethods]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PyClassInitializer<BFSSuccessors>, Infallible>
[INFO] [stdout]   --> src/iterators.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | #[pymethods]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `pymethods` (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: std::ops::ControlFlow<Result<Infallible, Infallible>, PyClassInitializer<iterators::NodeIndices>>
[INFO] [stdout]    --> src/iterators.rs:210:1
[INFO] [stdout]     |
[INFO] [stdout] 210 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PyClassInitializer<iterators::NodeIndices>, Infallible>
[INFO] [stdout]    --> src/iterators.rs:210:1
[INFO] [stdout]     |
[INFO] [stdout] 210 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `pymethods` (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: std::ops::ControlFlow<Result<Infallible, Infallible>, PyClassInitializer<EdgeList>>
[INFO] [stdout]    --> src/iterators.rs:324:1
[INFO] [stdout]     |
[INFO] [stdout] 324 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PyClassInitializer<EdgeList>, Infallible>
[INFO] [stdout]    --> src/iterators.rs:324:1
[INFO] [stdout]     |
[INFO] [stdout] 324 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `pymethods` (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: std::ops::ControlFlow<Result<Infallible, Infallible>, PyClassInitializer<WeightedEdgeList>>
[INFO] [stdout]    --> src/iterators.rs:442:1
[INFO] [stdout]     |
[INFO] [stdout] 442 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PyClassInitializer<WeightedEdgeList>, Infallible>
[INFO] [stdout]    --> src/iterators.rs:442:1
[INFO] [stdout]     |
[INFO] [stdout] 442 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `pymethods` (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: std::ops::ControlFlow<Result<Infallible, Infallible>, PyClassInitializer<PyDiGraph>>
[INFO] [stdout]    --> src/digraph.rs:394:1
[INFO] [stdout]     |
[INFO] [stdout] 394 | #[pymethods]
[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<PyClassInitializer<PyDiGraph>, Infallible>
[INFO] [stdout]    --> src/digraph.rs:394:1
[INFO] [stdout]     |
[INFO] [stdout] 394 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `pymethods` (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: std::ops::ControlFlow<Result<Infallible, Infallible>, PyClassInitializer<PyGraph>>
[INFO] [stdout]    --> src/graph.rs:265:1
[INFO] [stdout]     |
[INFO] [stdout] 265 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PyClassInitializer<PyGraph>, Infallible>
[INFO] [stdout]    --> src/graph.rs:265:1
[INFO] [stdout]     |
[INFO] [stdout] 265 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `pymethods` (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: std::ops::ControlFlow<Result<Infallible, Infallible>, PyClassInitializer<BFSSuccessors>>
[INFO] [stdout]   --> src/iterators.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | #[pymethods]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PyClassInitializer<BFSSuccessors>, Infallible>
[INFO] [stdout]   --> src/iterators.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | #[pymethods]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the attribute macro `pymethods` (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: std::ops::ControlFlow<Result<Infallible, Infallible>, PyClassInitializer<iterators::NodeIndices>>
[INFO] [stdout]    --> src/iterators.rs:210:1
[INFO] [stdout]     |
[INFO] [stdout] 210 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PyClassInitializer<iterators::NodeIndices>, Infallible>
[INFO] [stdout]    --> src/iterators.rs:210:1
[INFO] [stdout]     |
[INFO] [stdout] 210 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `pymethods` (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: std::ops::ControlFlow<Result<Infallible, Infallible>, PyClassInitializer<EdgeList>>
[INFO] [stdout]    --> src/iterators.rs:324:1
[INFO] [stdout]     |
[INFO] [stdout] 324 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `retworkx` (lib test) due to 12 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<PyClassInitializer<EdgeList>, Infallible>
[INFO] [stdout]    --> src/iterators.rs:324:1
[INFO] [stdout]     |
[INFO] [stdout] 324 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `pymethods` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: std::ops::ControlFlow<Result<Infallible, Infallible>, PyClassInitializer<WeightedEdgeList>>
[INFO] [stdout]    --> src/iterators.rs:442:1
[INFO] [stdout]     |
[INFO] [stdout] 442 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PyClassInitializer<WeightedEdgeList>, Infallible>
[INFO] [stdout]    --> src/iterators.rs:442:1
[INFO] [stdout]     |
[INFO] [stdout] 442 | #[pymethods]
[INFO] [stdout]     | ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the attribute macro `pymethods` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `retworkx` (lib) due to 12 previous errors
[INFO] running `Command { std: "docker" "inspect" "ab047bc5427267e2a7e39efcf100a594992bba68891f64e9d96386589c896aad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab047bc5427267e2a7e39efcf100a594992bba68891f64e9d96386589c896aad", kill_on_drop: false }`
[INFO] [stdout] ab047bc5427267e2a7e39efcf100a594992bba68891f64e9d96386589c896aad
