[INFO] fetching crate coap-lite 0.13.3...
[INFO] checking coap-lite-0.13.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate coap-lite 0.13.3 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate coap-lite 0.13.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate coap-lite 0.13.3
[INFO] tweaked toml for crates.io crate coap-lite 0.13.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate coap-lite 0.13.3 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 coap-lite 0.13.3 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-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] c8b91cc53a637a8db0495417c4f19f55104abd343699424863d4c98ca7ddef94
[INFO] running `Command { std: "docker" "start" "-a" "c8b91cc53a637a8db0495417c4f19f55104abd343699424863d4c98ca7ddef94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8b91cc53a637a8db0495417c4f19f55104abd343699424863d4c98ca7ddef94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8b91cc53a637a8db0495417c4f19f55104abd343699424863d4c98ca7ddef94", kill_on_drop: false }`
[INFO] [stdout] c8b91cc53a637a8db0495417c4f19f55104abd343699424863d4c98ca7ddef94
[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] 4dfc55793a4c2fabee60cb6a1064da15110de8b631ddd2177dbf38323cb69408
[INFO] running `Command { std: "docker" "start" "-a" "4dfc55793a4c2fabee60cb6a1064da15110de8b631ddd2177dbf38323cb69408", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.85
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]    Compiling minicbor v0.19.1
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking coap-message v0.3.2
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking coap-numbers v0.2.4
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking crc v3.2.1
[INFO] [stderr]    Compiling document-features v0.2.8
[INFO] [stderr]     Checking embedded-io v0.4.0
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking coap-handler v0.2.0
[INFO] [stderr]     Checking lru_time_cache v0.11.11
[INFO] [stderr]     Checking coap-message v0.2.3
[INFO] [stderr]     Checking coap-lite v0.13.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/block_handler/mod.rs:410:10
[INFO] [stdout]     |
[INFO] [stdout] 410 |     dst: &mut Vec<T>,
[INFO] [stdout]     |          ^^^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 414 | ) -> Result<alloc::vec::Splice<I::IntoIter>, String>
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 414 | ) -> Result<alloc::vec::Splice<'_, I::IntoIter>, String>
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/packet.rs:379:20
[INFO] [stdout]     |
[INFO] [stdout] 379 |     pub fn options(&self) -> Options {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 379 |     pub fn options(&self) -> Options<'_> {
[INFO] [stdout]     |                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<MessageClass, Infallible>
[INFO] [stdout]   --> src/impl_coap_message_0_3.rs:15:65
[INFO] [stdout]    |
[INFO] [stdout] 15 |       fn new(code: u8) -> Result<Self, core::convert::Infallible> {
[INFO] [stdout]    |  _________________________________________________________________^
[INFO] [stdout] 16 | |         Ok(code.into())
[INFO] [stdout] 17 | |     }
[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<MessageClass, Infallible>
[INFO] [stdout]   --> src/impl_coap_message_0_3.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         Ok(code.into())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CoapOption, Infallible>
[INFO] [stdout]   --> src/impl_coap_message_0_3.rs:93:68
[INFO] [stdout]    |
[INFO] [stdout] 93 |       fn new(option: u16) -> Result<Self, core::convert::Infallible> {
[INFO] [stdout]    |  ____________________________________________________________________^
[INFO] [stdout] 94 | |         Ok(option.into())
[INFO] [stdout] 95 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CoapOption, Infallible>
[INFO] [stdout]   --> src/impl_coap_message_0_3.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         Ok(option.into())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&mut [u8], Infallible>
[INFO] [stdout]    --> src/impl_coap_message_0_3.rs:135:51
[INFO] [stdout]     |
[INFO] [stdout] 135 |       ) -> Result<&mut [u8], Self::SetPayloadError> {
[INFO] [stdout]     |  ___________________________________________________^
[INFO] [stdout] 136 | |         self.payload.resize(len, 0);
[INFO] [stdout] 137 | |         Ok(&mut self.payload)
[INFO] [stdout] 138 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&mut [u8], Infallible>
[INFO] [stdout]    --> src/impl_coap_message_0_3.rs:137:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |         Ok(&mut self.payload)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `coap-lite` (lib) due to 6 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4dfc55793a4c2fabee60cb6a1064da15110de8b631ddd2177dbf38323cb69408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dfc55793a4c2fabee60cb6a1064da15110de8b631ddd2177dbf38323cb69408", kill_on_drop: false }`
[INFO] [stdout] 4dfc55793a4c2fabee60cb6a1064da15110de8b631ddd2177dbf38323cb69408
