[INFO] fetching crate pyo3-testing 0.3.5...
[INFO] checking pyo3-testing-0.3.5 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate pyo3-testing 0.3.5 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate pyo3-testing 0.3.5
[INFO] finished tweaking crates.io crate pyo3-testing 0.3.5
[INFO] tweaked toml for crates.io crate pyo3-testing 0.3.5 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pyo3-testing 0.3.5 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 43 packages to latest compatible versions
[INFO] [stderr]       Adding pyo3 v0.22.6 (available: v0.27.1)
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 1f4497ff440e6fb13402c6116d8c4620ac69f4325d1ea9c040f3120542aedfe9
[INFO] running `Command { std: "docker" "start" "-a" "1f4497ff440e6fb13402c6116d8c4620ac69f4325d1ea9c040f3120542aedfe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f4497ff440e6fb13402c6116d8c4620ac69f4325d1ea9c040f3120542aedfe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f4497ff440e6fb13402c6116d8c4620ac69f4325d1ea9c040f3120542aedfe9", kill_on_drop: false }`
[INFO] [stdout] 1f4497ff440e6fb13402c6116d8c4620ac69f4325d1ea9c040f3120542aedfe9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 96c51e8164e11fd24c4901e520afd92ac84cfe1388d249211665e2067571a0e4
[INFO] running `Command { std: "docker" "start" "-a" "96c51e8164e11fd24c4901e520afd92ac84cfe1388d249211665e2067571a0e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.12.16
[INFO] [stderr]    Compiling target-triple v1.0.0
[INFO] [stderr]     Checking toml_writer v1.0.4
[INFO] [stderr]     Checking toml_parser v1.0.4
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling winnow v0.7.13
[INFO] [stderr]     Checking serde_spanned v1.0.3
[INFO] [stderr]     Checking toml_datetime v0.7.3
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]    Compiling unindent v0.2.4
[INFO] [stderr]    Compiling pyo3-build-config v0.22.6
[INFO] [stderr]     Checking toml v0.9.8
[INFO] [stderr]    Compiling pyo3-ffi v0.22.6
[INFO] [stderr]    Compiling pyo3-macros-backend v0.22.6
[INFO] [stderr]    Compiling pyo3 v0.22.6
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling pyo3-macros v0.22.6
[INFO] [stderr]     Checking trybuild v1.0.114
[INFO] [stderr]     Checking pyo3-testing v0.3.5 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]   --> tests/test_pyo3test.rs:11:29
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn py_addone(num: isize) -> isize {
[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<isize, Infallible>
[INFO] [stdout]   --> tests/test_pyo3test.rs:17:29
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn py_double(num: isize) -> isize {
[INFO] [stdout]    |                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]   --> tests/test_pyo3test.rs:23:41
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn py_add(left: isize, right: isize) -> isize {
[INFO] [stdout]    |                                         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]   --> tests/test_pyo3test.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn py_zero() -> isize {
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pyo3-testing` (test "test_pyo3test") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]   --> tests/test_withpyraises.rs:11:29
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn py_addone(num: isize) -> isize {
[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 `pyo3-testing` (test "test_withpyraises") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "96c51e8164e11fd24c4901e520afd92ac84cfe1388d249211665e2067571a0e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96c51e8164e11fd24c4901e520afd92ac84cfe1388d249211665e2067571a0e4", kill_on_drop: false }`
[INFO] [stdout] 96c51e8164e11fd24c4901e520afd92ac84cfe1388d249211665e2067571a0e4