[INFO] fetching crate proto-lab 0.1.4...
[INFO] checking proto-lab-0.1.4 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate proto-lab 0.1.4 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate proto-lab 0.1.4
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate proto-lab 0.1.4
[INFO] tweaked toml for crates.io crate proto-lab 0.1.4 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate proto-lab 0.1.4 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] crate crates.io crate proto-lab 0.1.4 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-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] 09674d04bdb06fe5f620ac7b181be14b2d9e4136712ca913a8f0df68c01c9a75
[INFO] running `Command { std: "docker" "start" "-a" "09674d04bdb06fe5f620ac7b181be14b2d9e4136712ca913a8f0df68c01c9a75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09674d04bdb06fe5f620ac7b181be14b2d9e4136712ca913a8f0df68c01c9a75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09674d04bdb06fe5f620ac7b181be14b2d9e4136712ca913a8f0df68c01c9a75", kill_on_drop: false }`
[INFO] [stdout] 09674d04bdb06fe5f620ac7b181be14b2d9e4136712ca913a8f0df68c01c9a75
[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] 09b9e55f5625a3e26cf0b643ac69e6ac40fcf711f52d2b2fdcff4bdb48b509ce
[INFO] running `Command { std: "docker" "start" "-a" "09b9e55f5625a3e26cf0b643ac69e6ac40fcf711f52d2b2fdcff4bdb48b509ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking hash32 v0.3.1
[INFO] [stderr]     Checking embedded-nano-mesh v2.1.0
[INFO] [stderr]     Checking proto-lab v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/device/wireless_modem.rs:59:59
[INFO] [stdout]    |
[INFO] [stdout] 59 |       fn read_ready(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  ___________________________________________________________^
[INFO] [stdout] 60 | |         Ok(self.readable())
[INFO] [stdout] 61 | |     }
[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/device/wireless_modem.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         Ok(self.readable())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/device/wireless_modem.rs:65:70
[INFO] [stdout]    |
[INFO] [stdout] 65 |       fn read(&mut self, buf: &mut [u8]) -> Result<usize, Self::Error> {
[INFO] [stdout]    |  ______________________________________________________________________^
[INFO] [stdout] 66 | |         WirelessModemFake::read(&self, buf)
[INFO] [stdout] 67 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/device/wireless_modem.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         WirelessModemFake::read(&self, buf)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/device/wireless_modem.rs:71:67
[INFO] [stdout]    |
[INFO] [stdout] 71 |       fn write(&mut self, buf: &[u8]) -> Result<usize, Self::Error> {
[INFO] [stdout]    |  ___________________________________________________________________^
[INFO] [stdout] 72 | |         WirelessModemFake::write(&self, buf)
[INFO] [stdout] 73 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/device/wireless_modem.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         WirelessModemFake::write(&self, buf)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/device/wireless_modem.rs:98:84
[INFO] [stdout]     |
[INFO] [stdout]  98 |       pub fn read(&self, buf: &mut [u8]) -> Result<usize, core::convert::Infallible> {
[INFO] [stdout]     |  ____________________________________________________________________________________^
[INFO] [stdout]  99 | |         let mut count_red: usize = 0;
[INFO] [stdout] 100 | |         for buf_vancant_place in buf.iter_mut() {
[INFO] [stdout] 101 | |             if let Some(byte) = self.get_from_tx_pin() {
[INFO] [stdout] ...   |
[INFO] [stdout] 106 | |         Ok(count_red)
[INFO] [stdout] 107 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/device/wireless_modem.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         Ok(count_red)
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/device/wireless_modem.rs:109:81
[INFO] [stdout]     |
[INFO] [stdout] 109 |       pub fn write(&self, buf: &[u8]) -> Result<usize, core::convert::Infallible> {
[INFO] [stdout]     |  _________________________________________________________________________________^
[INFO] [stdout] 110 | |         let mut count_written: usize = 0;
[INFO] [stdout] 111 | |         for b in buf {
[INFO] [stdout] 112 | |             self.put_to_rx_pin(*b);
[INFO] [stdout] ...   |
[INFO] [stdout] 115 | |         Ok(count_written)
[INFO] [stdout] 116 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/device/wireless_modem.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |         Ok(count_written)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proto-lab` (lib) due to 10 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<bool, Infallible>
[INFO] [stdout]   --> src/device/wireless_modem.rs:59:59
[INFO] [stdout]    |
[INFO] [stdout] 59 |       fn read_ready(&mut self) -> Result<bool, Self::Error> {
[INFO] [stdout]    |  ___________________________________________________________^
[INFO] [stdout] 60 | |         Ok(self.readable())
[INFO] [stdout] 61 | |     }
[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/device/wireless_modem.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         Ok(self.readable())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/device/wireless_modem.rs:65:70
[INFO] [stdout]    |
[INFO] [stdout] 65 |       fn read(&mut self, buf: &mut [u8]) -> Result<usize, Self::Error> {
[INFO] [stdout]    |  ______________________________________________________________________^
[INFO] [stdout] 66 | |         WirelessModemFake::read(&self, buf)
[INFO] [stdout] 67 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/device/wireless_modem.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         WirelessModemFake::read(&self, buf)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/device/wireless_modem.rs:71:67
[INFO] [stdout]    |
[INFO] [stdout] 71 |       fn write(&mut self, buf: &[u8]) -> Result<usize, Self::Error> {
[INFO] [stdout]    |  ___________________________________________________________________^
[INFO] [stdout] 72 | |         WirelessModemFake::write(&self, buf)
[INFO] [stdout] 73 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/device/wireless_modem.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         WirelessModemFake::write(&self, buf)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/device/wireless_modem.rs:98:84
[INFO] [stdout]     |
[INFO] [stdout]  98 |       pub fn read(&self, buf: &mut [u8]) -> Result<usize, core::convert::Infallible> {
[INFO] [stdout]     |  ____________________________________________________________________________________^
[INFO] [stdout]  99 | |         let mut count_red: usize = 0;
[INFO] [stdout] 100 | |         for buf_vancant_place in buf.iter_mut() {
[INFO] [stdout] 101 | |             if let Some(byte) = self.get_from_tx_pin() {
[INFO] [stdout] ...   |
[INFO] [stdout] 106 | |         Ok(count_red)
[INFO] [stdout] 107 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/device/wireless_modem.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         Ok(count_red)
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/device/wireless_modem.rs:109:81
[INFO] [stdout]     |
[INFO] [stdout] 109 |       pub fn write(&self, buf: &[u8]) -> Result<usize, core::convert::Infallible> {
[INFO] [stdout]     |  _________________________________________________________________________________^
[INFO] [stdout] 110 | |         let mut count_written: usize = 0;
[INFO] [stdout] 111 | |         for b in buf {
[INFO] [stdout] 112 | |             self.put_to_rx_pin(*b);
[INFO] [stdout] ...   |
[INFO] [stdout] 115 | |         Ok(count_written)
[INFO] [stdout] 116 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/device/wireless_modem.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |         Ok(count_written)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proto-lab` (lib test) due to 10 previous errors
[INFO] running `Command { std: "docker" "inspect" "09b9e55f5625a3e26cf0b643ac69e6ac40fcf711f52d2b2fdcff4bdb48b509ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09b9e55f5625a3e26cf0b643ac69e6ac40fcf711f52d2b2fdcff4bdb48b509ce", kill_on_drop: false }`
[INFO] [stdout] 09b9e55f5625a3e26cf0b643ac69e6ac40fcf711f52d2b2fdcff4bdb48b509ce
