[INFO] fetching crate lc709203 0.3.0...
[INFO] testing lc709203-0.3.0 against try#db823df02fd0c2cf67b43025ac3fef3f2d743245 for pr-150681
[INFO] extracting crate lc709203 0.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate lc709203 0.3.0
[INFO] finished tweaking crates.io crate lc709203 0.3.0
[INFO] tweaked toml for crates.io crate lc709203 0.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lc709203 0.3.0 on toolchain db823df02fd0c2cf67b43025ac3fef3f2d743245
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lc709203 0.3.0 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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a2ad2d5490b44cc5ef8085cecd008b0d80d52f042331d28061caf86023bcd23f
[INFO] running `Command { std: "docker" "start" "-a" "a2ad2d5490b44cc5ef8085cecd008b0d80d52f042331d28061caf86023bcd23f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2ad2d5490b44cc5ef8085cecd008b0d80d52f042331d28061caf86023bcd23f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2ad2d5490b44cc5ef8085cecd008b0d80d52f042331d28061caf86023bcd23f", kill_on_drop: false }`
[INFO] [stdout] a2ad2d5490b44cc5ef8085cecd008b0d80d52f042331d28061caf86023bcd23f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5746e6138c092d131ca98534aa553c731656c053b6b333301a0b36af7a8e836e
[INFO] running `Command { std: "docker" "start" "-a" "5746e6138c092d131ca98534aa553c731656c053b6b333301a0b36af7a8e836e", kill_on_drop: false }`
[INFO] [stderr]    Compiling lc709203 v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "5746e6138c092d131ca98534aa553c731656c053b6b333301a0b36af7a8e836e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5746e6138c092d131ca98534aa553c731656c053b6b333301a0b36af7a8e836e", kill_on_drop: false }`
[INFO] [stdout] 5746e6138c092d131ca98534aa553c731656c053b6b333301a0b36af7a8e836e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f41bdd20d39bc20c5b094c873c4e1c71152ec3c17999b45beb86171614b93cb
[INFO] running `Command { std: "docker" "start" "-a" "3f41bdd20d39bc20c5b094c873c4e1c71152ec3c17999b45beb86171614b93cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling lc709203 v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "3f41bdd20d39bc20c5b094c873c4e1c71152ec3c17999b45beb86171614b93cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f41bdd20d39bc20c5b094c873c4e1c71152ec3c17999b45beb86171614b93cb", kill_on_drop: false }`
[INFO] [stdout] 3f41bdd20d39bc20c5b094c873c4e1c71152ec3c17999b45beb86171614b93cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "+db823df02fd0c2cf67b43025ac3fef3f2d743245" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dfda6907f7f719f1ce1555650018b8931c9926c58a5cf3391200e9725dc9324e
[INFO] running `Command { std: "docker" "start" "-a" "dfda6907f7f719f1ce1555650018b8931c9926c58a5cf3391200e9725dc9324e", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lc709203-6f667f23110747a4)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lc709203
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 7) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 7) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `I2C`
[INFO] [stdout]   --> src/lib.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | let i2c = I2C::new();
[INFO] [stdout]    |           ^^^ use of undeclared type `I2C`
[INFO] [stdout]    |
[INFO] [stdout] help: there is an enum variant `lc709203::TemperatureMode::I2C`; try using the variant's enum
[INFO] [stdout]    |
[INFO] [stdout] 11 - let i2c = I2C::new();
[INFO] [stdout] 11 + let i2c = lc709203::TemperatureMode::new();
[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:16:21
[INFO] [stdout]    |
[INFO] [stdout]  8 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_7_0() {
[INFO] [stdout]    |                                      --------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 16 |     .build(&mut i2c)?; // initialize the lc709203 chip
[INFO] [stdout]    |                     ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout]  8 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_7_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]  9 | // some concrete type implementing I2C access, i.e. the embedded_hal::blocking::i2c::WriteRead
[INFO] [stdout] ...
[INFO] [stdout] 17 | let battery_voltage = lc709203.cell_voltage_v(&mut i2c)?;
[INFO] [stdout] 18 +     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:17:56
[INFO] [stdout]    |
[INFO] [stdout]  8 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_7_0() {
[INFO] [stdout]    |                                      --------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 17 | let battery_voltage = lc709203.cell_voltage_v(&mut i2c)?;
[INFO] [stdout]    |                                                        ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]    |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]    |
[INFO] [stdout]  8 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_7_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]  9 | // some concrete type implementing I2C access, i.e. the embedded_hal::blocking::i2c::WriteRead
[INFO] [stdout] ...
[INFO] [stdout] 17 | let battery_voltage = lc709203.cell_voltage_v(&mut i2c)?;
[INFO] [stdout] 18 +     Ok(())
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 7)
[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" "dfda6907f7f719f1ce1555650018b8931c9926c58a5cf3391200e9725dc9324e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfda6907f7f719f1ce1555650018b8931c9926c58a5cf3391200e9725dc9324e", kill_on_drop: false }`
[INFO] [stdout] dfda6907f7f719f1ce1555650018b8931c9926c58a5cf3391200e9725dc9324e
