[INFO] updating cached repository theSeafarer/arduino_hal
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/theSeafarer/arduino_hal
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/theSeafarer/arduino_hal" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/theSeafarer/arduino_hal"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/theSeafarer/arduino_hal'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/theSeafarer/arduino_hal" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/theSeafarer/arduino_hal"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/theSeafarer/arduino_hal'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 36fdeaa5b033a5431480453ce8b4ef836c1cbb34
[INFO] sha for GitHub repo theSeafarer/arduino_hal: 36fdeaa5b033a5431480453ce8b4ef836c1cbb34
[INFO] validating manifest of theSeafarer/arduino_hal on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of theSeafarer/arduino_hal on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing theSeafarer/arduino_hal
[INFO] finished frobbing theSeafarer/arduino_hal
[INFO] frobbed toml for theSeafarer/arduino_hal written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/theSeafarer/arduino_hal/Cargo.toml
[INFO] started frobbing theSeafarer/arduino_hal
[INFO] finished frobbing theSeafarer/arduino_hal
[INFO] frobbed toml for theSeafarer/arduino_hal written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/theSeafarer/arduino_hal/Cargo.toml
[INFO] crate theSeafarer/arduino_hal already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking theSeafarer/arduino_hal against master#0f88167f89fffe321590c5148f21b7d51d44388d for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-4/master#0f88167f89fffe321590c5148f21b7d51d44388d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/theSeafarer/arduino_hal:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c541311698cfb06013711ae2f2f930dc9fb053b72c8a97a844bdb2f6c0fb69be
[INFO] running `"docker" "start" "-a" "c541311698cfb06013711ae2f2f930dc9fb053b72c8a97a844bdb2f6c0fb69be"`
[INFO] [stderr]     Checking nb v0.1.1
[INFO] [stderr]     Checking ux v0.1.2
[INFO] [stderr]     Checking embedded-hal v0.2.1
[INFO] [stderr]     Checking arduino_hal v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `self::SerialError::*`
[INFO] [stderr]    --> src/serial.rs:190:13
[INFO] [stderr]     |
[INFO] [stderr] 190 |         use self::SerialError::*;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hal::spi`
[INFO] [stderr]  --> src/spi.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use hal::spi;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hal::blocking::spi as bspi`
[INFO] [stderr]  --> src/spi.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use hal::blocking::spi as bspi;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `read_volatile`, `write_volatile`
[INFO] [stderr]  --> src/spi.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 | use core::ptr::{read_volatile, write_volatile};
[INFO] [stderr]   |                 ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::reg::*`
[INFO] [stderr]  --> src/spi.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use super::reg::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::SerialError::*`
[INFO] [stderr]    --> src/serial.rs:190:13
[INFO] [stderr]     |
[INFO] [stderr] 190 |         use self::SerialError::*;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hal::spi`
[INFO] [stderr]  --> src/spi.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use hal::spi;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hal::blocking::spi as bspi`
[INFO] [stderr]  --> src/spi.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use hal::blocking::spi as bspi;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `read_volatile`, `write_volatile`
[INFO] [stderr]  --> src/spi.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 | use core::ptr::{read_volatile, write_volatile};
[INFO] [stderr]   |                 ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::reg::*`
[INFO] [stderr]  --> src/spi.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use super::reg::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: private trait `serial::CharSizeFlag` in public interface (error E0445)
[INFO] [stderr]    --> src/serial.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | / impl<T> Serial<T> where
[INFO] [stderr] 113 | |   T: CharSizeFlag + Into<u8> {
[INFO] [stderr] 114 | |     #[inline]
[INFO] [stderr] 115 | |     pub fn new_with(ubrr: u16, parity: Parity, stop: StopBits) -> Self {
[INFO] [stderr] ...   |
[INFO] [stderr] 159 | |
[INFO] [stderr] 160 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(private_in_public)] on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `written`
[INFO] [stderr]   --> src/serial.rs:73:3
[INFO] [stderr]    |
[INFO] [stderr] 73 |   written: bool,
[INFO] [stderr]    |   ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: private trait `serial::CharSizeFlag` in public interface (error E0445)
[INFO] [stderr]    --> src/serial.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | / impl<T> Serial<T> where
[INFO] [stderr] 113 | |   T: CharSizeFlag + Into<u8> {
[INFO] [stderr] 114 | |     #[inline]
[INFO] [stderr] 115 | |     pub fn new_with(ubrr: u16, parity: Parity, stop: StopBits) -> Self {
[INFO] [stderr] ...   |
[INFO] [stderr] 159 | |
[INFO] [stderr] 160 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(private_in_public)] on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `written`
[INFO] [stderr]   --> src/serial.rs:73:3
[INFO] [stderr]    |
[INFO] [stderr] 73 |   written: bool,
[INFO] [stderr]    |   ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.65s
[INFO] running `"docker" "inspect" "c541311698cfb06013711ae2f2f930dc9fb053b72c8a97a844bdb2f6c0fb69be"`
[INFO] running `"docker" "rm" "-f" "c541311698cfb06013711ae2f2f930dc9fb053b72c8a97a844bdb2f6c0fb69be"`
[INFO] [stdout] c541311698cfb06013711ae2f2f930dc9fb053b72c8a97a844bdb2f6c0fb69be