[INFO] cloning repository https://github.com/debruijn/rust_itertools
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/debruijn/rust_itertools" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebruijn%2Frust_itertools", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebruijn%2Frust_itertools'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f338a24cc14a4eb34e5395c2f5a743e5fd28fa75
[INFO] checking debruijn/rust_itertools against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebruijn%2Frust_itertools" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/debruijn/rust_itertools
[INFO] finished tweaking git repo https://github.com/debruijn/rust_itertools
[INFO] tweaked toml for git repo https://github.com/debruijn/rust_itertools written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/debruijn/rust_itertools 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 git repo https://github.com/debruijn/rust_itertools 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] da493abffdc7c17fc4b46dff777f3c81d9a0eed7d6e6554fd5349a4f26deb80b
[INFO] running `Command { std: "docker" "start" "-a" "da493abffdc7c17fc4b46dff777f3c81d9a0eed7d6e6554fd5349a4f26deb80b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da493abffdc7c17fc4b46dff777f3c81d9a0eed7d6e6554fd5349a4f26deb80b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da493abffdc7c17fc4b46dff777f3c81d9a0eed7d6e6554fd5349a4f26deb80b", kill_on_drop: false }`
[INFO] [stdout] da493abffdc7c17fc4b46dff777f3c81d9a0eed7d6e6554fd5349a4f26deb80b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 3263eb427bbfa153c547033b4fdcd30fc27b0365f25d85073c4c90a7f588ca21
[INFO] running `Command { std: "docker" "start" "-a" "3263eb427bbfa153c547033b4fdcd30fc27b0365f25d85073c4c90a7f588ca21", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.87
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling indoc v2.0.5
[INFO] [stderr]     Checking unindent v0.2.3
[INFO] [stderr]    Compiling pyo3-build-config v0.22.3
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]     Checking itertools v0.14.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling pyo3-macros-backend v0.22.3
[INFO] [stderr]    Compiling pyo3-ffi v0.22.3
[INFO] [stderr]    Compiling pyo3 v0.22.3
[INFO] [stderr]    Compiling pyo3-macros v0.22.3
[INFO] [stderr]     Checking rust_itertools v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<usize>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:10:32
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn derangements_range(n: T) -> Vec<Vec<T>> {
[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<Vec<Vec<pyo3::Bound<'_, pyo3::PyAny>>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:63:51
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn permutations(iterable: Bound<PyList>, k: T) -> Vec<Vec<Bound<PyAny>>> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<usize>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:68:53
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn distinct_permutations(iterable: Vec<T>, k: T) -> Vec<Vec<T>> {
[INFO] [stdout]    |                                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<usize>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:73:44
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn derangements(iterable: Vec<T>, k: T) -> Vec<Vec<T>> {
[INFO] [stdout]    |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<pyo3::Bound<'_, pyo3::PyAny>>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:82:51
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn combinations(iterable: Bound<PyList>, k: T) -> Vec<Vec<Bound<PyAny>>> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<pyo3::Bound<'_, pyo3::PyAny>>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:87:68
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn combinations_with_replacement(iterable: Bound<PyList>, k: T) -> Vec<Vec<Bound<PyAny>>> {
[INFO] [stdout]    |                                                                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<(pyo3::Bound<'_, pyo3::PyAny>, pyo3::Bound<'_, pyo3::PyAny>)>, Infallible>
[INFO] [stdout]   --> src/lib.rs:95:41
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn pairwise(iterable: Bound<PyList>) -> Vec<(Bound<PyAny>, Bound<PyAny>)> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<pyo3::Bound<'_, pyo3::PyAny>>, Infallible>
[INFO] [stdout]    --> src/lib.rs:100:37
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn repeat(n: Bound<PyAny>, k: T) -> Vec<Bound<PyAny>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<pyo3::Bound<'_, pyo3::PyAny>>>, Infallible>
[INFO] [stdout]    --> src/lib.rs:105:41
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn powerset(iterable: Bound<PyList>) -> Vec<Vec<Bound<PyAny>>> {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_itertools` (lib) due to 9 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<Vec<Vec<usize>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:10:32
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn derangements_range(n: T) -> Vec<Vec<T>> {
[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<Vec<Vec<pyo3::Bound<'_, pyo3::PyAny>>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:63:51
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn permutations(iterable: Bound<PyList>, k: T) -> Vec<Vec<Bound<PyAny>>> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<usize>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:68:53
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn distinct_permutations(iterable: Vec<T>, k: T) -> Vec<Vec<T>> {
[INFO] [stdout]    |                                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<usize>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:73:44
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn derangements(iterable: Vec<T>, k: T) -> Vec<Vec<T>> {
[INFO] [stdout]    |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<pyo3::Bound<'_, pyo3::PyAny>>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:82:51
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn combinations(iterable: Bound<PyList>, k: T) -> Vec<Vec<Bound<PyAny>>> {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<pyo3::Bound<'_, pyo3::PyAny>>>, Infallible>
[INFO] [stdout]   --> src/lib.rs:87:68
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn combinations_with_replacement(iterable: Bound<PyList>, k: T) -> Vec<Vec<Bound<PyAny>>> {
[INFO] [stdout]    |                                                                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<(pyo3::Bound<'_, pyo3::PyAny>, pyo3::Bound<'_, pyo3::PyAny>)>, Infallible>
[INFO] [stdout]   --> src/lib.rs:95:41
[INFO] [stdout]    |
[INFO] [stdout] 95 | fn pairwise(iterable: Bound<PyList>) -> Vec<(Bound<PyAny>, Bound<PyAny>)> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<pyo3::Bound<'_, pyo3::PyAny>>, Infallible>
[INFO] [stdout]    --> src/lib.rs:100:37
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn repeat(n: Bound<PyAny>, k: T) -> Vec<Bound<PyAny>> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<pyo3::Bound<'_, pyo3::PyAny>>>, Infallible>
[INFO] [stdout]    --> src/lib.rs:105:41
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn powerset(iterable: Bound<PyList>) -> Vec<Vec<Bound<PyAny>>> {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_itertools` (lib test) due to 9 previous errors
[INFO] running `Command { std: "docker" "inspect" "3263eb427bbfa153c547033b4fdcd30fc27b0365f25d85073c4c90a7f588ca21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3263eb427bbfa153c547033b4fdcd30fc27b0365f25d85073c4c90a7f588ca21", kill_on_drop: false }`
[INFO] [stdout] 3263eb427bbfa153c547033b4fdcd30fc27b0365f25d85073c4c90a7f588ca21