[INFO] fetching crate potato-types 0.2.0...
[INFO] checking potato-types-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate potato-types 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate potato-types 0.2.0
[INFO] finished tweaking crates.io crate potato-types 0.2.0
[INFO] tweaked toml for crates.io crate potato-types 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate potato-types 0.2.0 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] crate crates.io crate potato-types 0.2.0 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] 97d9d56119fb867961e2d59f99e57ac0576a5dec4aa036f6daf7d0fa06a544bc
[INFO] running `Command { std: "docker" "start" "-a" "97d9d56119fb867961e2d59f99e57ac0576a5dec4aa036f6daf7d0fa06a544bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97d9d56119fb867961e2d59f99e57ac0576a5dec4aa036f6daf7d0fa06a544bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97d9d56119fb867961e2d59f99e57ac0576a5dec4aa036f6daf7d0fa06a544bc", kill_on_drop: false }`
[INFO] [stdout] 97d9d56119fb867961e2d59f99e57ac0576a5dec4aa036f6daf7d0fa06a544bc
[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] 9ec66ad6ae8ca1c5677c15a1cbb0c17e454d5054935d296f542c68ff79e36883
[INFO] running `Command { std: "docker" "start" "-a" "9ec66ad6ae8ca1c5677c15a1cbb0c17e454d5054935d296f542c68ff79e36883", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.13.2
[INFO] [stderr]     Checking chrono v0.4.41
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]     Checking unindent v0.2.4
[INFO] [stderr]     Checking uuid v1.17.0
[INFO] [stderr]     Checking colored_json v5.0.0
[INFO] [stderr]    Compiling pyo3-build-config v0.25.1
[INFO] [stderr]     Checking thiserror v2.0.12
[INFO] [stderr]    Compiling pyo3-ffi v0.25.1
[INFO] [stderr]    Compiling pyo3-macros-backend v0.25.1
[INFO] [stderr]    Compiling pyo3 v0.25.1
[INFO] [stderr]    Compiling pyo3-macros v0.25.1
[INFO] [stderr]     Checking potato-utils v0.2.0
[INFO] [stderr]     Checking potato-types v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Option<SaveName>, Infallible>
[INFO] [stdout]   --> src/lib.rs:15:36
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn from_string(s: &str) -> Option<Self> {
[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<&str, Infallible>
[INFO] [stdout]   --> src/lib.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn as_string(&self) -> &str {
[INFO] [stdout]    |                                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `potato-types` (lib test) due to 2 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<Option<SaveName>, Infallible>
[INFO] [stdout]   --> src/lib.rs:15:36
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn from_string(s: &str) -> Option<Self> {
[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<&str, Infallible>
[INFO] [stdout]   --> src/lib.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn as_string(&self) -> &str {
[INFO] [stdout]    |                                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `potato-types` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9ec66ad6ae8ca1c5677c15a1cbb0c17e454d5054935d296f542c68ff79e36883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ec66ad6ae8ca1c5677c15a1cbb0c17e454d5054935d296f542c68ff79e36883", kill_on_drop: false }`
[INFO] [stdout] 9ec66ad6ae8ca1c5677c15a1cbb0c17e454d5054935d296f542c68ff79e36883