[INFO] fetching crate wasefire-protocol-usb 0.3.0...
[INFO] testing wasefire-protocol-usb-0.3.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate wasefire-protocol-usb 0.3.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate wasefire-protocol-usb 0.3.0
[INFO] finished tweaking crates.io crate wasefire-protocol-usb 0.3.0
[INFO] tweaked toml for crates.io crate wasefire-protocol-usb 0.3.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wasefire-protocol-usb 0.3.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wasefire-protocol-usb 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasefire-board-api v0.9.0
[INFO] [stderr]   Downloaded wasefire-one-of v0.1.1
[INFO] [stderr]   Downloaded rusb v0.9.4
[INFO] [stderr]   Downloaded libusb1-sys v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ed86b40dd1ba853f5607b42a589abc8a3ef2d126551dcee8801d790808f5549
[INFO] running `Command { std: "docker" "start" "-a" "2ed86b40dd1ba853f5607b42a589abc8a3ef2d126551dcee8801d790808f5549", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ed86b40dd1ba853f5607b42a589abc8a3ef2d126551dcee8801d790808f5549", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ed86b40dd1ba853f5607b42a589abc8a3ef2d126551dcee8801d790808f5549", kill_on_drop: false }`
[INFO] [stdout] 2ed86b40dd1ba853f5607b42a589abc8a3ef2d126551dcee8801d790808f5549
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8d8a4df97b9abb6202c5a8e46ddef651cc78102022b7532a27a7b50e5cd609e
[INFO] running `Command { std: "docker" "start" "-a" "f8d8a4df97b9abb6202c5a8e46ddef651cc78102022b7532a27a7b50e5cd609e", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasefire-one-of v0.1.1
[INFO] [stderr]    Compiling wasefire-logger v0.2.0
[INFO] [stderr]    Compiling wasefire-protocol-usb v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: Exactly one of feature "device" or "host" can be enabled.
[INFO] [stdout]   --> src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | exactly_one_of!["device", "host"];
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::internal_one_of` which comes from the expansion of the macro `exactly_one_of` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![feature(never_type)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wasefire-protocol-usb` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f8d8a4df97b9abb6202c5a8e46ddef651cc78102022b7532a27a7b50e5cd609e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8d8a4df97b9abb6202c5a8e46ddef651cc78102022b7532a27a7b50e5cd609e", kill_on_drop: false }`
[INFO] [stdout] f8d8a4df97b9abb6202c5a8e46ddef651cc78102022b7532a27a7b50e5cd609e