[INFO] fetching crate ws-oled-driver 0.0.5...
[INFO] testing ws-oled-driver-0.0.5 against master#0d162b25edd5bf0dba9a22e83b614f1113e90474 for pr-150681
[INFO] extracting crate ws-oled-driver 0.0.5 into /workspace/builds/worker-3-tc1/source
[INFO] removed /workspace/builds/worker-3-tc1/source/.cargo/config
[INFO] started tweaking crates.io crate ws-oled-driver 0.0.5
[INFO] finished tweaking crates.io crate ws-oled-driver 0.0.5
[INFO] tweaked toml for crates.io crate ws-oled-driver 0.0.5 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ws-oled-driver 0.0.5 on toolchain 0d162b25edd5bf0dba9a22e83b614f1113e90474
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ws-oled-driver 0.0.5 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" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded anyhow v1.0.69
[INFO] [stderr]   Downloaded rppal v0.14.1
[INFO] [stderr]   Downloaded libc v0.2.139
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fe47b88932428705092392c7acc7360e19b799c5c1e301ac6f6d0c0f2d0d45e
[INFO] running `Command { std: "docker" "start" "-a" "5fe47b88932428705092392c7acc7360e19b799c5c1e301ac6f6d0c0f2d0d45e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fe47b88932428705092392c7acc7360e19b799c5c1e301ac6f6d0c0f2d0d45e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fe47b88932428705092392c7acc7360e19b799c5c1e301ac6f6d0c0f2d0d45e", kill_on_drop: false }`
[INFO] [stdout] 5fe47b88932428705092392c7acc7360e19b799c5c1e301ac6f6d0c0f2d0d45e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08661c380f07c6f820274d81ac1bb33bde4203750d8144507b47c5f6e82019d7
[INFO] running `Command { std: "docker" "start" "-a" "08661c380f07c6f820274d81ac1bb33bde4203750d8144507b47c5f6e82019d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling anyhow v1.0.69
[INFO] [stderr]    Compiling rppal v0.14.1
[INFO] [stderr]    Compiling ws-oled-driver v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.29s
[INFO] running `Command { std: "docker" "inspect" "08661c380f07c6f820274d81ac1bb33bde4203750d8144507b47c5f6e82019d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08661c380f07c6f820274d81ac1bb33bde4203750d8144507b47c5f6e82019d7", kill_on_drop: false }`
[INFO] [stdout] 08661c380f07c6f820274d81ac1bb33bde4203750d8144507b47c5f6e82019d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d25a6dd697a1df46f575d46075765fa7adf95a7d3916735a7959ec181abcbeb
[INFO] running `Command { std: "docker" "start" "-a" "0d25a6dd697a1df46f575d46075765fa7adf95a7d3916735a7959ec181abcbeb", kill_on_drop: false }`
[INFO] [stderr]    Compiling ws-oled-driver v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "0d25a6dd697a1df46f575d46075765fa7adf95a7d3916735a7959ec181abcbeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d25a6dd697a1df46f575d46075765fa7adf95a7d3916735a7959ec181abcbeb", kill_on_drop: false }`
[INFO] [stdout] 0d25a6dd697a1df46f575d46075765fa7adf95a7d3916735a7959ec181abcbeb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ecfca623b5253bd05748d1c7674f15153d7ba962771517b2ef0f02e3c9dfeb42
[INFO] running `Command { std: "docker" "start" "-a" "ecfca623b5253bd05748d1c7674f15153d7ba962771517b2ef0f02e3c9dfeb42", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ws_oled_driver-764407f421c48916)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ws_oled_driver
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - Device (line 22) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Device (line 22) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]   --> src/lib.rs:25:31
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_22_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 24 | use ws_oled_driver::Device;
[INFO] [stdout] 25 | let mut device = Device::new()?.initialize_components()?;
[INFO] [stdout]    |                               ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 23 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_22_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 24 | use ws_oled_driver::Device;
[INFO] [stdout] 25 | let mut device = Device::new()?.initialize_components()?;
[INFO] [stdout] 26 +     Ok(())
[INFO] [stdout]    |
[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 `FromResidual`)
[INFO] [stdout]   --> src/lib.rs:25:56
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_22_0() {
[INFO] [stdout]    |                                      ---------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] 24 | use ws_oled_driver::Device;
[INFO] [stdout] 25 | let mut device = Device::new()?.initialize_components()?;
[INFO] [stdout]    |                                                        ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout] 23 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_22_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 24 | use ws_oled_driver::Device;
[INFO] [stdout] 25 | let mut device = Device::new()?.initialize_components()?;
[INFO] [stdout] 26 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 - Device (line 22)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "ecfca623b5253bd05748d1c7674f15153d7ba962771517b2ef0f02e3c9dfeb42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecfca623b5253bd05748d1c7674f15153d7ba962771517b2ef0f02e3c9dfeb42", kill_on_drop: false }`
[INFO] [stdout] ecfca623b5253bd05748d1c7674f15153d7ba962771517b2ef0f02e3c9dfeb42
