[INFO] fetching crate st7032i 0.0.4... [INFO] testing st7032i-0.0.4 against 1.49.0 for beta-1.50-1 [INFO] extracting crate st7032i 0.0.4 into /workspace/builds/worker-12/source [INFO] validating manifest of crates.io crate st7032i 0.0.4 on toolchain 1.49.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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-12/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 81c7dbf1db6dc609495242b5ec6005ade5ccc2a8843830d95d26b950eefb0078 [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" "81c7dbf1db6dc609495242b5ec6005ade5ccc2a8843830d95d26b950eefb0078", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "81c7dbf1db6dc609495242b5ec6005ade5ccc2a8843830d95d26b950eefb0078", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "81c7dbf1db6dc609495242b5ec6005ade5ccc2a8843830d95d26b950eefb0078", kill_on_drop: false }` [INFO] [stdout] 81c7dbf1db6dc609495242b5ec6005ade5ccc2a8843830d95d26b950eefb0078 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 06d3bdcabdfa3c3ad464ec877c358d1d6849297cd26d74f8f3a99f6daff00896 [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" "06d3bdcabdfa3c3ad464ec877c358d1d6849297cd26d74f8f3a99f6daff00896", kill_on_drop: false }` [INFO] [stderr] Compiling nb v0.1.3 [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 1.07s [INFO] running `Command { std: "docker" "inspect" "06d3bdcabdfa3c3ad464ec877c358d1d6849297cd26d74f8f3a99f6daff00896", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "06d3bdcabdfa3c3ad464ec877c358d1d6849297cd26d74f8f3a99f6daff00896", kill_on_drop: false }` [INFO] [stdout] 06d3bdcabdfa3c3ad464ec877c358d1d6849297cd26d74f8f3a99f6daff00896 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6e68f9eddc406ba3a1a43909d35f5b05386b5dd3b658dfe7fcaa3b4091bddc53 [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" "6e68f9eddc406ba3a1a43909d35f5b05386b5dd3b658dfe7fcaa3b4091bddc53", kill_on_drop: false }` [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 8.86s [INFO] running `Command { std: "docker" "inspect" "6e68f9eddc406ba3a1a43909d35f5b05386b5dd3b658dfe7fcaa3b4091bddc53", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6e68f9eddc406ba3a1a43909d35f5b05386b5dd3b658dfe7fcaa3b4091bddc53", kill_on_drop: false }` [INFO] [stdout] 6e68f9eddc406ba3a1a43909d35f5b05386b5dd3b658dfe7fcaa3b4091bddc53 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 692b535ef346442bc196c158ce943df2531deb27b47b4aa7e91dfcf6cad18d93 [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" "692b535ef346442bc196c158ce943df2531deb27b47b4aa7e91dfcf6cad18d93", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.39s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/st7032i-3bbb4bb88bbc53f4 [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 [INFO] [stdout] [INFO] [stderr] Doc-tests st7032i [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test src/lib.rs - (line 23) ... FAILED [INFO] [stderr] error: test failed, to rerun pass '--doc' [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 `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 [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "692b535ef346442bc196c158ce943df2531deb27b47b4aa7e91dfcf6cad18d93", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "692b535ef346442bc196c158ce943df2531deb27b47b4aa7e91dfcf6cad18d93", kill_on_drop: false }` [INFO] [stdout] 692b535ef346442bc196c158ce943df2531deb27b47b4aa7e91dfcf6cad18d93