[INFO] fetching crate embedded-nal-coap 0.1.0-alpha.4...
[INFO] checking embedded-nal-coap-0.1.0-alpha.4 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate embedded-nal-coap 0.1.0-alpha.4 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate embedded-nal-coap 0.1.0-alpha.4
[INFO] finished tweaking crates.io crate embedded-nal-coap 0.1.0-alpha.4
[INFO] tweaked toml for crates.io crate embedded-nal-coap 0.1.0-alpha.4 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate embedded-nal-coap 0.1.0-alpha.4 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 51 packages to latest compatible versions
[INFO] [stderr]       Adding defmt v0.3.100 (available: v1.0.1)
[INFO] [stderr]       Adding embassy-sync v0.3.0 (available: v0.7.2)
[INFO] [stderr]       Adding embedded-nal-async v0.8.0 (available: v0.9.0)
[INFO] [stderr]       Adding heapless v0.7.17 (available: v0.9.2)
[INFO] [stderr]       Adding rand_core v0.6.4 (available: v0.9.3)
[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] 98f95c7fd5374aa04ca9aafe285f22af7faa9d4c56a463dd8d71ad9b07b20904
[INFO] running `Command { std: "docker" "start" "-a" "98f95c7fd5374aa04ca9aafe285f22af7faa9d4c56a463dd8d71ad9b07b20904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98f95c7fd5374aa04ca9aafe285f22af7faa9d4c56a463dd8d71ad9b07b20904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98f95c7fd5374aa04ca9aafe285f22af7faa9d4c56a463dd8d71ad9b07b20904", kill_on_drop: false }`
[INFO] [stdout] 98f95c7fd5374aa04ca9aafe285f22af7faa9d4c56a463dd8d71ad9b07b20904
[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] a595f4c1e4f1ad3fe4f277b0a3d1c6b31598c8b2010f564e7721787652c37f50
[INFO] running `Command { std: "docker" "start" "-a" "a595f4c1e4f1ad3fe4f277b0a3d1c6b31598c8b2010f564e7721787652c37f50", kill_on_drop: false }`
[INFO] [stderr]    Compiling minicbor v2.1.1
[INFO] [stderr]    Compiling litrs v1.0.0
[INFO] [stderr]    Compiling heapless v0.9.2
[INFO] [stderr]     Checking coap-numbers v0.2.8
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling embassy-sync v0.3.0
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking embedded-nal v0.9.0
[INFO] [stderr]     Checking coap-message v0.3.6
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]     Checking embedded-nal-async v0.8.0
[INFO] [stderr]     Checking coap-request v0.2.0-alpha.2
[INFO] [stderr]     Checking coap-handler v0.2.1
[INFO] [stderr]    Compiling document-features v0.2.12
[INFO] [stderr]     Checking coap-message-utils v0.3.9
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]     Checking coap-message-implementations v0.1.10
[INFO] [stderr]     Checking embedded-nal-coap v0.1.0-alpha.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `details` is never read
[INFO] [stdout]    --> src/lib.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     ResponsePending {
[INFO] [stdout]     |     --------------- field in this variant
[INFO] [stdout] 153 |         details: RequestMatchingDetails,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RequestState` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rand` is never read
[INFO] [stdout]    --> src/lib.rs:235:5
[INFO] [stdout]     |
[INFO] [stdout] 224 | struct RunParts<'a, Socket, Handler, RandomSource, const CONCURRENT_REQUESTS: usize>
[INFO] [stdout]     |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 235 |     rand: &'a mut RandomSource,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `details` is never read
[INFO] [stdout]    --> src/lib.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     ResponsePending {
[INFO] [stdout]     |     --------------- field in this variant
[INFO] [stdout] 153 |         details: RequestMatchingDetails,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RequestState` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rand` is never read
[INFO] [stdout]    --> src/lib.rs:235:5
[INFO] [stdout]     |
[INFO] [stdout] 224 | struct RunParts<'a, Socket, Handler, RandomSource, const CONCURRENT_REQUESTS: usize>
[INFO] [stdout]     |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 235 |     rand: &'a mut RandomSource,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/udp_write.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         msg.add_option(coap_numbers::option::URI_PATH.try_into().unwrap(), b"hello");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let _ = msg.add_option(coap_numbers::option::URI_PATH.try_into().unwrap(), b"hello");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u16, Infallible>
[INFO] [stdout]    --> src/udp_write.rs:142:24
[INFO] [stdout]     |
[INFO] [stdout] 142 |         msg.add_option(coap_numbers::option::URI_PATH.try_into().unwrap(), b"hello");
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/udp_write.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |         msg.set_payload(b"World");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let _ = msg.set_payload(b"World");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/udp_write.rs:180:9
[INFO] [stdout]     |
[INFO] [stdout] 180 |         msg.set_payload(b"x");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 180 |         let _ = msg.set_payload(b"x");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `embedded-nal-coap` (lib test) due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a595f4c1e4f1ad3fe4f277b0a3d1c6b31598c8b2010f564e7721787652c37f50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a595f4c1e4f1ad3fe4f277b0a3d1c6b31598c8b2010f564e7721787652c37f50", kill_on_drop: false }`
[INFO] [stdout] a595f4c1e4f1ad3fe4f277b0a3d1c6b31598c8b2010f564e7721787652c37f50