[INFO] cloning repository https://github.com/dotcypress/st7032i
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dotcypress/st7032i" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdotcypress%2Fst7032i", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdotcypress%2Fst7032i'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2eaf63af371652660b98c12bfb1702b303ef9cf7
[INFO] testing dotcypress/st7032i against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdotcypress%2Fst7032i" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dotcypress/st7032i on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dotcypress/st7032i
[INFO] finished tweaking git repo https://github.com/dotcypress/st7032i
[INFO] tweaked toml for git repo https://github.com/dotcypress/st7032i written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/dotcypress/st7032i already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded i2cdev v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94ae0e2b3330836dcb5d9467f21e958d379951ab62ad23cb7a14698a16fa4294
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "94ae0e2b3330836dcb5d9467f21e958d379951ab62ad23cb7a14698a16fa4294", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94ae0e2b3330836dcb5d9467f21e958d379951ab62ad23cb7a14698a16fa4294", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94ae0e2b3330836dcb5d9467f21e958d379951ab62ad23cb7a14698a16fa4294", kill_on_drop: false }`
[INFO] [stdout] 94ae0e2b3330836dcb5d9467f21e958d379951ab62ad23cb7a14698a16fa4294
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6399e644c3422ffde034cda0801029ec944e8a33373df7e823a4df8f1c91a2c0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6399e644c3422ffde034cda0801029ec944e8a33373df7e823a4df8f1c91a2c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling nb v0.1.2
[INFO] [stderr]    Compiling embedded-hal v0.2.3
[INFO] [stderr]    Compiling st7032i v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "6399e644c3422ffde034cda0801029ec944e8a33373df7e823a4df8f1c91a2c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6399e644c3422ffde034cda0801029ec944e8a33373df7e823a4df8f1c91a2c0", kill_on_drop: false }`
[INFO] [stdout] 6399e644c3422ffde034cda0801029ec944e8a33373df7e823a4df8f1c91a2c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec4d35b9f06061e5eb445ad20c84ed96a394f9bc4d501144996359d52d591ea2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ec4d35b9f06061e5eb445ad20c84ed96a394f9bc4d501144996359d52d591ea2", kill_on_drop: false }`
[INFO] [stderr]    Compiling cast v0.2.2
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stderr]    Compiling i2cdev v0.4.2
[INFO] [stderr]    Compiling sysfs_gpio v0.5.4
[INFO] [stderr]    Compiling spidev v0.3.0
[INFO] [stderr]    Compiling linux-embedded-hal v0.2.2
[INFO] [stderr]    Compiling st7032i v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.03s
[INFO] running `Command { std: "docker" "inspect" "ec4d35b9f06061e5eb445ad20c84ed96a394f9bc4d501144996359d52d591ea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec4d35b9f06061e5eb445ad20c84ed96a394f9bc4d501144996359d52d591ea2", kill_on_drop: false }`
[INFO] [stdout] ec4d35b9f06061e5eb445ad20c84ed96a394f9bc4d501144996359d52d591ea2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9b25f3a9f039ba8478ca0c8c9cbddd0eeabf6fe84ec9f1d1829391cc4556bf6b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9b25f3a9f039ba8478ca0c8c9cbddd0eeabf6fe84ec9f1d1829391cc4556bf6b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/st7032i-55fe2be879d620ef
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests st7032i
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 23) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 16) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 23) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:29:11
[INFO] [stdout]    |
[INFO] [stdout] 7  | / fn main() {
[INFO] [stdout] 8  | | let dev = I2cdev::new("/dev/i2c-1")?;
[INFO] [stdout]    | |           ^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 9  | | let mut display = ST7032i::new(dev, Delay, 2);
[INFO] [stdout] 10 | | display.init()?;
[INFO] [stdout] ...  |
[INFO] [stdout] 13 | | write!(display, "Rust")?;
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / fn main() {
[INFO] [stdout] 8  | | let dev = I2cdev::new("/dev/i2c-1")?;
[INFO] [stdout] 9  | | let mut display = ST7032i::new(dev, Delay, 2);
[INFO] [stdout] 10 | | display.init()?;
[INFO] [stdout]    | | ^^^^^^^^^^^^^^^
[INFO] [stdout]    | | |
[INFO] [stdout]    | | cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] ...  |
[INFO] [stdout] 13 | | write!(display, "Rust")?;
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / fn main() {
[INFO] [stdout] 8  | | let dev = I2cdev::new("/dev/i2c-1")?;
[INFO] [stdout] 9  | | let mut display = ST7032i::new(dev, Delay, 2);
[INFO] [stdout] 10 | | display.init()?;
[INFO] [stdout] 11 | | write!(display, "Hello")?;
[INFO] [stdout]    | | ^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 12 | | display.move_cursor(1, 0)?;
[INFO] [stdout] 13 | | write!(display, "Rust")?;
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:33:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / fn main() {
[INFO] [stdout] 8  | | let dev = I2cdev::new("/dev/i2c-1")?;
[INFO] [stdout] 9  | | let mut display = ST7032i::new(dev, Delay, 2);
[INFO] [stdout] 10 | | display.init()?;
[INFO] [stdout] 11 | | write!(display, "Hello")?;
[INFO] [stdout] 12 | | display.move_cursor(1, 0)?;
[INFO] [stdout]    | | ^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 13 | | write!(display, "Rust")?;
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]   --> src/lib.rs:34:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / fn main() {
[INFO] [stdout] 8  | | let dev = I2cdev::new("/dev/i2c-1")?;
[INFO] [stdout] 9  | | let mut display = ST7032i::new(dev, Delay, 2);
[INFO] [stdout] 10 | | display.init()?;
[INFO] [stdout] ...  |
[INFO] [stdout] 13 | | write!(display, "Rust")?;
[INFO] [stdout]    | | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    | | |
[INFO] [stdout]    | | cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]    = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 23)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "9b25f3a9f039ba8478ca0c8c9cbddd0eeabf6fe84ec9f1d1829391cc4556bf6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b25f3a9f039ba8478ca0c8c9cbddd0eeabf6fe84ec9f1d1829391cc4556bf6b", kill_on_drop: false }`
[INFO] [stdout] 9b25f3a9f039ba8478ca0c8c9cbddd0eeabf6fe84ec9f1d1829391cc4556bf6b
