[INFO] fetching crate usbd-serial 0.2.0...
[INFO] checking usbd-serial-0.2.0 against master#35936c4839dd272646394779d151e060d0f6b3ac for pr-122960-1
[INFO] extracting crate usbd-serial 0.2.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate usbd-serial 0.2.0 on toolchain 35936c4839dd272646394779d151e060d0f6b3ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate usbd-serial 0.2.0
[INFO] finished tweaking crates.io crate usbd-serial 0.2.0
[INFO] tweaked toml for crates.io crate usbd-serial 0.2.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded heapless v0.8.0
[INFO] [stderr]   Downloaded hash32 v0.3.1
[INFO] [stderr]   Downloaded usb-device v0.3.2
[INFO] [stderr]   Downloaded portable-atomic v1.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 999d19471a2cfed9cb1135656f667047858f4c5aaee47249591e06a7b1ca54b1
[INFO] running `Command { std: "docker" "start" "-a" "999d19471a2cfed9cb1135656f667047858f4c5aaee47249591e06a7b1ca54b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "999d19471a2cfed9cb1135656f667047858f4c5aaee47249591e06a7b1ca54b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "999d19471a2cfed9cb1135656f667047858f4c5aaee47249591e06a7b1ca54b1", kill_on_drop: false }`
[INFO] [stdout] 999d19471a2cfed9cb1135656f667047858f4c5aaee47249591e06a7b1ca54b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b5911b8c3113da0fb240a2f3dfd9a914f5c86db03a1873494f8d266c7f49486
[INFO] running `Command { std: "docker" "start" "-a" "6b5911b8c3113da0fb240a2f3dfd9a914f5c86db03a1873494f8d266c7f49486", kill_on_drop: false }`
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling portable-atomic v1.6.0
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking hash32 v0.3.1
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]     Checking usb-device v0.3.2
[INFO] [stderr]     Checking usbd-serial v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `LangID` is imported redundantly
[INFO] [stdout]  --> src/cdc_acm.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use usb_device::class_prelude::*;
[INFO] [stdout]   |     ---------------------------- the item `LangID` is already imported here
[INFO] [stdout] 4 | use usb_device::descriptor::lang_id::LangID;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `LangID` is imported redundantly
[INFO] [stdout]  --> src/serial_port.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use usb_device::class_prelude::*;
[INFO] [stdout]   |     ---------------------------- the item `LangID` is already imported here
[INFO] [stdout] 6 | use usb_device::descriptor::lang_id::LangID;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `LangID` is imported redundantly
[INFO] [stdout]  --> src/cdc_acm.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use usb_device::class_prelude::*;
[INFO] [stdout]   |     ---------------------------- the item `LangID` is already imported here
[INFO] [stdout] 4 | use usb_device::descriptor::lang_id::LangID;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `LangID` is imported redundantly
[INFO] [stdout]  --> src/serial_port.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use usb_device::class_prelude::*;
[INFO] [stdout]   |     ---------------------------- the item `LangID` is already imported here
[INFO] [stdout] 6 | use usb_device::descriptor::lang_id::LangID;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.98s
[INFO] running `Command { std: "docker" "inspect" "6b5911b8c3113da0fb240a2f3dfd9a914f5c86db03a1873494f8d266c7f49486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b5911b8c3113da0fb240a2f3dfd9a914f5c86db03a1873494f8d266c7f49486", kill_on_drop: false }`
[INFO] [stdout] 6b5911b8c3113da0fb240a2f3dfd9a914f5c86db03a1873494f8d266c7f49486