[INFO] cloning repository https://github.com/Peter-Lande/python-crc64fast
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Peter-Lande/python-crc64fast" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeter-Lande%2Fpython-crc64fast", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPeter-Lande%2Fpython-crc64fast'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf75416ed7905da16586e90c88d3a4ac8f51759b
[INFO] checking Peter-Lande/python-crc64fast 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%2FPeter-Lande%2Fpython-crc64fast" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Peter-Lande/python-crc64fast
[INFO] finished tweaking git repo https://github.com/Peter-Lande/python-crc64fast
[INFO] tweaked toml for git repo https://github.com/Peter-Lande/python-crc64fast written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Peter-Lande/python-crc64fast 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/Peter-Lande/python-crc64fast 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-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] b60e7725704dc275b1173544cec65a4c7b88f1277326cc13d8cd8a5143c3dc80
[INFO] running `Command { std: "docker" "start" "-a" "b60e7725704dc275b1173544cec65a4c7b88f1277326cc13d8cd8a5143c3dc80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b60e7725704dc275b1173544cec65a4c7b88f1277326cc13d8cd8a5143c3dc80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b60e7725704dc275b1173544cec65a4c7b88f1277326cc13d8cd8a5143c3dc80", kill_on_drop: false }`
[INFO] [stdout] b60e7725704dc275b1173544cec65a4c7b88f1277326cc13d8cd8a5143c3dc80
[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] 237fd0c3802a66fc51dcdf9458317b50d7b3cb5e13240ff8a94ac6162d9523a6
[INFO] running `Command { std: "docker" "start" "-a" "237fd0c3802a66fc51dcdf9458317b50d7b3cb5e13240ff8a94ac6162d9523a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.13.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]     Checking crc-catalog v2.4.0
[INFO] [stderr]     Checking crc v3.2.1
[INFO] [stderr]     Checking crc64fast-nvme v1.2.0
[INFO] [stderr]    Compiling pyo3-build-config v0.24.2
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling pyo3-ffi v0.24.2
[INFO] [stderr]    Compiling pyo3-macros-backend v0.24.2
[INFO] [stderr]    Compiling pyo3 v0.24.2
[INFO] [stderr]    Compiling pyo3-macros v0.24.2
[INFO] [stderr]     Checking crc64fast v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<_lib::Digest, Infallible>
[INFO] [stdout]   --> rust/lib.rs:10:60
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn crc64fast(py_kwargs: Option<&Bound<'_, PyDict>>) -> Digest {
[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<u8>, Infallible>
[INFO] [stdout]   --> rust/lib.rs:63:29
[INFO] [stdout]    |
[INFO] [stdout] 63 |         fn digest(&self) -> Vec<u8> {
[INFO] [stdout]    |                             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> rust/lib.rs:67:32
[INFO] [stdout]    |
[INFO] [stdout] 67 |         fn hexdigest(&self) -> String {
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<_lib::Digest, Infallible>
[INFO] [stdout]   --> rust/lib.rs:71:27
[INFO] [stdout]    |
[INFO] [stdout] 71 |         fn copy(&self) -> Self {
[INFO] [stdout]    |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crc64fast` (lib test) 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<_lib::Digest, Infallible>
[INFO] [stdout]   --> rust/lib.rs:10:60
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn crc64fast(py_kwargs: Option<&Bound<'_, PyDict>>) -> Digest {
[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<u8>, Infallible>
[INFO] [stdout]   --> rust/lib.rs:63:29
[INFO] [stdout]    |
[INFO] [stdout] 63 |         fn digest(&self) -> Vec<u8> {
[INFO] [stdout]    |                             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> rust/lib.rs:67:32
[INFO] [stdout]    |
[INFO] [stdout] 67 |         fn hexdigest(&self) -> String {
[INFO] [stdout]    |                                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<_lib::Digest, Infallible>
[INFO] [stdout]   --> rust/lib.rs:71:27
[INFO] [stdout]    |
[INFO] [stdout] 71 |         fn copy(&self) -> Self {
[INFO] [stdout]    |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crc64fast` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "237fd0c3802a66fc51dcdf9458317b50d7b3cb5e13240ff8a94ac6162d9523a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "237fd0c3802a66fc51dcdf9458317b50d7b3cb5e13240ff8a94ac6162d9523a6", kill_on_drop: false }`
[INFO] [stdout] 237fd0c3802a66fc51dcdf9458317b50d7b3cb5e13240ff8a94ac6162d9523a6