[INFO] fetching crate dummy-pin 1.0.0...
[INFO] checking dummy-pin-1.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate dummy-pin 1.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate dummy-pin 1.0.0
[INFO] finished tweaking crates.io crate dummy-pin 1.0.0
[INFO] tweaked toml for crates.io crate dummy-pin 1.0.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate dummy-pin 1.0.0 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 dummy-pin 1.0.0 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] dff0ed57350f4832077249ce3ae8c7dfb898774ed754a2a5cf09764466f6df24
[INFO] running `Command { std: "docker" "start" "-a" "dff0ed57350f4832077249ce3ae8c7dfb898774ed754a2a5cf09764466f6df24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dff0ed57350f4832077249ce3ae8c7dfb898774ed754a2a5cf09764466f6df24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dff0ed57350f4832077249ce3ae8c7dfb898774ed754a2a5cf09764466f6df24", kill_on_drop: false }`
[INFO] [stdout] dff0ed57350f4832077249ce3ae8c7dfb898774ed754a2a5cf09764466f6df24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 2efe82a98b1dbc1415f719fb7f86dee5ca3c84f390f272588d25b8cefac5672e
[INFO] running `Command { std: "docker" "start" "-a" "2efe82a98b1dbc1415f719fb7f86dee5ca3c84f390f272588d25b8cefac5672e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]     Checking bitflags v2.4.2
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]     Checking embedded-hal v1.0.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking dummy-pin v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking embedded-hal-nb v1.0.0
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:58:56
[INFO] [stdout]    |
[INFO] [stdout] 58 |       fn is_high(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________^
[INFO] [stdout] 59 | |         Ok(false)
[INFO] [stdout] 60 | |     }
[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<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Ok(false)
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:62:55
[INFO] [stdout]    |
[INFO] [stdout] 62 |       fn is_low(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  _______________________________________________________^
[INFO] [stdout] 63 | |         Ok(true)
[INFO] [stdout] 64 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         Ok(true)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:68:56
[INFO] [stdout]    |
[INFO] [stdout] 68 |       fn is_high(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________^
[INFO] [stdout] 69 | |         Ok(true)
[INFO] [stdout] 70 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |         Ok(true)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:72:55
[INFO] [stdout]    |
[INFO] [stdout] 72 |       fn is_low(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  _______________________________________________________^
[INFO] [stdout] 73 | |         Ok(false)
[INFO] [stdout] 74 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         Ok(false)
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:78:60
[INFO] [stdout]    |
[INFO] [stdout] 78 |       fn is_set_high(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  ____________________________________________________________^
[INFO] [stdout] 79 | |         Ok(false)
[INFO] [stdout] 80 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |         Ok(false)
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:82:59
[INFO] [stdout]    |
[INFO] [stdout] 82 |       fn is_set_low(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  ___________________________________________________________^
[INFO] [stdout] 83 | |         Ok(true)
[INFO] [stdout] 84 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         Ok(true)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:88:60
[INFO] [stdout]    |
[INFO] [stdout] 88 |       fn is_set_high(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  ____________________________________________________________^
[INFO] [stdout] 89 | |         Ok(true)
[INFO] [stdout] 90 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         Ok(true)
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:92:59
[INFO] [stdout]    |
[INFO] [stdout] 92 |       fn is_set_low(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  ___________________________________________________________^
[INFO] [stdout] 93 | |         Ok(false)
[INFO] [stdout] 94 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/dummy.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |         Ok(false)
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/last.rs:48:56
[INFO] [stdout]    |
[INFO] [stdout] 48 |       fn is_high(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________^
[INFO] [stdout] 49 | |         Ok(self.is_high)
[INFO] [stdout] 50 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/last.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         Ok(self.is_high)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/last.rs:52:55
[INFO] [stdout]    |
[INFO] [stdout] 52 |       fn is_low(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  _______________________________________________________^
[INFO] [stdout] 53 | |         Ok(!self.is_high)
[INFO] [stdout] 54 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/last.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         Ok(!self.is_high)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/last.rs:58:60
[INFO] [stdout]    |
[INFO] [stdout] 58 |       fn is_set_high(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  ____________________________________________________________^
[INFO] [stdout] 59 | |         Ok(self.is_high)
[INFO] [stdout] 60 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/last.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Ok(self.is_high)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/last.rs:62:59
[INFO] [stdout]    |
[INFO] [stdout] 62 |       fn is_set_low(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  ___________________________________________________________^
[INFO] [stdout] 63 | |         Ok(!self.is_high)
[INFO] [stdout] 64 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/last.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         Ok(!self.is_high)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dummy-pin` (lib) due to 24 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2efe82a98b1dbc1415f719fb7f86dee5ca3c84f390f272588d25b8cefac5672e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2efe82a98b1dbc1415f719fb7f86dee5ca3c84f390f272588d25b8cefac5672e", kill_on_drop: false }`
[INFO] [stdout] 2efe82a98b1dbc1415f719fb7f86dee5ca3c84f390f272588d25b8cefac5672e