[INFO] fetching crate dmx-rdm-ftdi 0.0.5-alpha...
[INFO] checking dmx-rdm-ftdi-0.0.5-alpha against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate dmx-rdm-ftdi 0.0.5-alpha into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate dmx-rdm-ftdi 0.0.5-alpha on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dmx-rdm-ftdi 0.0.5-alpha
[INFO] finished tweaking crates.io crate dmx-rdm-ftdi 0.0.5-alpha
[INFO] tweaked toml for crates.io crate dmx-rdm-ftdi 0.0.5-alpha written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dmx-rdm v0.0.11-alpha
[INFO] [stderr]   Downloaded libftd2xx v0.32.5
[INFO] [stderr]   Downloaded binary-layout v4.0.2
[INFO] [stderr]   Downloaded ftdi-mpsse v0.1.1
[INFO] [stderr]   Downloaded libftd2xx-ffi v0.8.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b245410f491db39c98484e76aa8ea8c200dbca6d6360052da8134911df7b106a
[INFO] running `Command { std: "docker" "start" "-a" "b245410f491db39c98484e76aa8ea8c200dbca6d6360052da8134911df7b106a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b245410f491db39c98484e76aa8ea8c200dbca6d6360052da8134911df7b106a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b245410f491db39c98484e76aa8ea8c200dbca6d6360052da8134911df7b106a", kill_on_drop: false }`
[INFO] [stdout] b245410f491db39c98484e76aa8ea8c200dbca6d6360052da8134911df7b106a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1025065b68333e40d70d1fd79c6c7e13b071b122b4a2ab9f0bc2f368500df697
[INFO] running `Command { std: "docker" "start" "-a" "1025065b68333e40d70d1fd79c6c7e13b071b122b4a2ab9f0bc2f368500df697", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling libftd2xx-ffi v0.8.6
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking hash32 v0.3.1
[INFO] [stderr]     Checking ftdi-mpsse v0.1.1
[INFO] [stderr]     Checking binary-layout v4.0.2
[INFO] [stderr]     Checking libftd2xx v0.32.5
[INFO] [stderr]    Compiling modular-bitfield-impl v0.11.2
[INFO] [stderr]     Checking modular-bitfield v0.11.2
[INFO] [stderr]     Checking dmx-rdm v0.0.11-alpha
[INFO] [stderr]     Checking dmx-rdm-ftdi v0.0.5-alpha (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> tests/test_ftdi_driver.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut dmx_driver = FtdiDriver::new(FtdiDriverConfig::default()).unwrap();
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.55s
[INFO] running `Command { std: "docker" "inspect" "1025065b68333e40d70d1fd79c6c7e13b071b122b4a2ab9f0bc2f368500df697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1025065b68333e40d70d1fd79c6c7e13b071b122b4a2ab9f0bc2f368500df697", kill_on_drop: false }`
[INFO] [stdout] 1025065b68333e40d70d1fd79c6c7e13b071b122b4a2ab9f0bc2f368500df697