[INFO] fetching crate argan-core 0.1.1...
[INFO] checking argan-core-0.1.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate argan-core 0.1.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate argan-core 0.1.1
[INFO] finished tweaking crates.io crate argan-core 0.1.1
[INFO] tweaked toml for crates.io crate argan-core 0.1.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate argan-core 0.1.1 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] e079c9a02a715233e4b06841f603a20ed430c275b23ba3754ddbd18a78d2f438
[INFO] running `Command { std: "docker" "start" "-a" "e079c9a02a715233e4b06841f603a20ed430c275b23ba3754ddbd18a78d2f438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e079c9a02a715233e4b06841f603a20ed430c275b23ba3754ddbd18a78d2f438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e079c9a02a715233e4b06841f603a20ed430c275b23ba3754ddbd18a78d2f438", kill_on_drop: false }`
[INFO] [stdout] e079c9a02a715233e4b06841f603a20ed430c275b23ba3754ddbd18a78d2f438
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 81c44a67581bc28e6ba40091add79148eb0a4eb9e705bac7e5e8e81e1e2f5d9e
[INFO] running `Command { std: "docker" "start" "-a" "81c44a67581bc28e6ba40091add79148eb0a4eb9e705bac7e5e8e81e1e2f5d9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]     Checking http-body-util v0.1.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking argan-core v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Option<T>, Infallible>
[INFO] [stdout]   --> src/request/impls.rs:40:50
[INFO] [stdout]    |
[INFO] [stdout] 40 |         T::from_request(head_parts, body).map(|result| Ok(result.ok()))
[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<Option<T>, Infallible>
[INFO] [stdout]   --> src/request/impls.rs:40:50
[INFO] [stdout]    |
[INFO] [stdout] 40 |         T::from_request(head_parts, body).map(|result| Ok(result.ok()))
[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 `argan-core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `argan-core` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "81c44a67581bc28e6ba40091add79148eb0a4eb9e705bac7e5e8e81e1e2f5d9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81c44a67581bc28e6ba40091add79148eb0a4eb9e705bac7e5e8e81e1e2f5d9e", kill_on_drop: false }`
[INFO] [stdout] 81c44a67581bc28e6ba40091add79148eb0a4eb9e705bac7e5e8e81e1e2f5d9e