[INFO] fetching crate st7032i 0.0.4... [INFO] testing st7032i-0.0.4 against beta-2021-01-01 for beta-1.50-1 [INFO] extracting crate st7032i 0.0.4 into /workspace/builds/worker-14/source [INFO] validating manifest of crates.io crate st7032i 0.0.4 on toolchain beta-2021-01-01 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate st7032i 0.0.4 [INFO] finished tweaking crates.io crate st7032i 0.0.4 [INFO] tweaked toml for crates.io crate st7032i 0.0.4 written to /workspace/builds/worker-14/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 16df87c3d3e1733628b17dedd252d36616419db971dc3691983800258bb17788 [INFO] running `Command { std: "docker" "start" "-a" "16df87c3d3e1733628b17dedd252d36616419db971dc3691983800258bb17788", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "16df87c3d3e1733628b17dedd252d36616419db971dc3691983800258bb17788", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "16df87c3d3e1733628b17dedd252d36616419db971dc3691983800258bb17788", kill_on_drop: false }` [INFO] [stdout] 16df87c3d3e1733628b17dedd252d36616419db971dc3691983800258bb17788 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 14d82293cd322ec27291b1a0ae413fa1471b7f19af1a5b99f22c8e1e35a0a31e [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" "14d82293cd322ec27291b1a0ae413fa1471b7f19af1a5b99f22c8e1e35a0a31e", kill_on_drop: false }` [INFO] [stderr] Compiling void v1.0.2 [INFO] [stderr] Compiling embedded-hal v0.2.4 [INFO] [stderr] Compiling st7032i v0.0.4 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.33s [INFO] running `Command { std: "docker" "inspect" "14d82293cd322ec27291b1a0ae413fa1471b7f19af1a5b99f22c8e1e35a0a31e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "14d82293cd322ec27291b1a0ae413fa1471b7f19af1a5b99f22c8e1e35a0a31e", kill_on_drop: false }` [INFO] [stdout] 14d82293cd322ec27291b1a0ae413fa1471b7f19af1a5b99f22c8e1e35a0a31e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 801b23207e7d0d55baa2518df6749d4c1d130b9e5b7c972f7bf58dd074019d40 [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" "801b23207e7d0d55baa2518df6749d4c1d130b9e5b7c972f7bf58dd074019d40", kill_on_drop: false }` [INFO] [stderr] Compiling bitflags v0.4.0 [INFO] [stderr] Compiling bitflags v0.3.3 [INFO] [stderr] Compiling nix v0.6.0 [INFO] [stderr] Compiling nix v0.14.1 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Compiling spidev v0.3.0 [INFO] [stderr] Compiling i2cdev v0.4.4 [INFO] [stderr] Compiling sysfs_gpio v0.5.4 [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 7.68s [INFO] running `Command { std: "docker" "inspect" "801b23207e7d0d55baa2518df6749d4c1d130b9e5b7c972f7bf58dd074019d40", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "801b23207e7d0d55baa2518df6749d4c1d130b9e5b7c972f7bf58dd074019d40", kill_on_drop: false }` [INFO] [stdout] 801b23207e7d0d55baa2518df6749d4c1d130b9e5b7c972f7bf58dd074019d40 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 1eb71d674fa0983baff5a1fe7f4bdcc4f23f154add48f71f4a0131ffe3d75457 [INFO] running `Command { std: "docker" "start" "-a" "1eb71d674fa0983baff5a1fe7f4bdcc4f23f154add48f71f4a0131ffe3d75457", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/st7032i-a4985b58ffe212f0 [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 st7032i [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test src/lib.rs - (line 16) ... ok [INFO] [stdout] test src/lib.rs - (line 23) ... FAILED [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 `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 `Try` is not implemented for `()` [INFO] [stdout] = note: required by `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 `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 `Try` is not implemented for `()` [INFO] [stdout] = note: required by `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 `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 `Try` is not implemented for `()` [INFO] [stdout] = note: required by `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 `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 `Try` is not implemented for `()` [INFO] [stdout] = note: required by `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 `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 `Try` is not implemented for `()` [INFO] [stdout] = note: required by `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; finished in 0.42s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] running `Command { std: "docker" "inspect" "1eb71d674fa0983baff5a1fe7f4bdcc4f23f154add48f71f4a0131ffe3d75457", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1eb71d674fa0983baff5a1fe7f4bdcc4f23f154add48f71f4a0131ffe3d75457", kill_on_drop: false }` [INFO] [stdout] 1eb71d674fa0983baff5a1fe7f4bdcc4f23f154add48f71f4a0131ffe3d75457