[INFO] fetching crate max6639 0.2.0...
[INFO] checking max6639-0.2.0 against try#2cbf9c3ff35600794d69a7dc7ab399810a067910 for pr-129249-2
[INFO] extracting crate max6639 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate max6639 0.2.0
[INFO] finished tweaking crates.io crate max6639 0.2.0
[INFO] tweaked toml for crates.io crate max6639 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate max6639 0.2.0 on toolchain 2cbf9c3ff35600794d69a7dc7ab399810a067910
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 379ca7acc5bfdb681ba79e6bfea2d7d59a0ded82103878ca77b576728a06233a
[INFO] running `Command { std: "docker" "start" "379ca7acc5bfdb681ba79e6bfea2d7d59a0ded82103878ca77b576728a06233a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "379ca7acc5bfdb681ba79e6bfea2d7d59a0ded82103878ca77b576728a06233a" "/opt/rustwide/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "379ca7acc5bfdb681ba79e6bfea2d7d59a0ded82103878ca77b576728a06233a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "379ca7acc5bfdb681ba79e6bfea2d7d59a0ded82103878ca77b576728a06233a" "/opt/rustwide/cargo-home/bin/cargo" "+2cbf9c3ff35600794d69a7dc7ab399810a067910" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking embedded-hal v1.0.0
[INFO] [stderr]     Checking max6639 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `<I2C as embedded_hal::i2c::ErrorType>::Error`
[INFO] [stdout]    --> src/lib.rs:117:28
[INFO] [stdout]     |
[INFO] [stdout] 117 |             .map_err(|err| err.into())?;
[INFO] [stdout]     |                            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: you can instead use the fully-qualified path `<<I2C as embedded_hal::i2c::ErrorType>::Error as Into<<I2C as embedded_hal::i2c::ErrorType>::Error>::into(val) to avoid triggering this lint
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:6:9
[INFO] [stdout]     |
[INFO] [stdout]   6 | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `max6639` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: useless conversion to the same type: `<I2C as embedded_hal::i2c::ErrorType>::Error`
[INFO] [stdout]    --> src/lib.rs:117:28
[INFO] [stdout]     |
[INFO] [stdout] 117 |             .map_err(|err| err.into())?;
[INFO] [stdout]     |                            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: you can instead use the fully-qualified path `<<I2C as embedded_hal::i2c::ErrorType>::Error as Into<<I2C as embedded_hal::i2c::ErrorType>::Error>::into(val) to avoid triggering this lint
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:6:9
[INFO] [stdout]     |
[INFO] [stdout]   6 | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `max6639` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "379ca7acc5bfdb681ba79e6bfea2d7d59a0ded82103878ca77b576728a06233a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "379ca7acc5bfdb681ba79e6bfea2d7d59a0ded82103878ca77b576728a06233a", kill_on_drop: false }`
[INFO] [stdout] 379ca7acc5bfdb681ba79e6bfea2d7d59a0ded82103878ca77b576728a06233a