[INFO] fetching crate rtic-macros 2.2.0...
[INFO] testing rtic-macros-2.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate rtic-macros 2.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate rtic-macros 2.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rtic-macros 2.2.0
[INFO] tweaked toml for crates.io crate rtic-macros 2.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rtic-macros 2.2.0 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 rtic-macros 2.2.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded trybuild v1.0.101
[INFO] [stderr]   Downloaded target-triple v0.1.3
[INFO] [stderr]   Downloaded serde_derive v1.0.213
[INFO] [stderr]   Downloaded syn v2.0.83
[INFO] [stderr]   Downloaded serde v1.0.213
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] d59132c0e8610b1cd9bff8cef1160474ad2e78c11017b39ec0fa4e4d153faac6
[INFO] running `Command { std: "docker" "start" "-a" "d59132c0e8610b1cd9bff8cef1160474ad2e78c11017b39ec0fa4e4d153faac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d59132c0e8610b1cd9bff8cef1160474ad2e78c11017b39ec0fa4e4d153faac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d59132c0e8610b1cd9bff8cef1160474ad2e78c11017b39ec0fa4e4d153faac6", kill_on_drop: false }`
[INFO] [stdout] d59132c0e8610b1cd9bff8cef1160474ad2e78c11017b39ec0fa4e4d153faac6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] f6dd7518a0821a84efa4469cd86cefd4c5fc70e8774dea4d135296470bd8e306
[INFO] running `Command { std: "docker" "start" "-a" "f6dd7518a0821a84efa4469cd86cefd4c5fc70e8774dea4d135296470bd8e306", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling hashbrown v0.15.0
[INFO] [stderr]    Compiling indexmap v2.6.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.83
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]    Compiling proc-macro-error2 v2.0.1
[INFO] [stderr]    Compiling rtic-macros v2.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: Cannot compile. No backend feature selected.
[INFO] [stdout]    --> src/lib.rs:125:1
[INFO] [stdout]     |
[INFO] [stdout] 125 | compile_error!("Cannot compile. No backend feature selected.");
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rtic-macros` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f6dd7518a0821a84efa4469cd86cefd4c5fc70e8774dea4d135296470bd8e306", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6dd7518a0821a84efa4469cd86cefd4c5fc70e8774dea4d135296470bd8e306", kill_on_drop: false }`
[INFO] [stdout] f6dd7518a0821a84efa4469cd86cefd4c5fc70e8774dea4d135296470bd8e306