[INFO] fetching crate merfolk_backend_serialport 0.1.0...
[INFO] checking merfolk_backend_serialport-0.1.0 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate merfolk_backend_serialport 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate merfolk_backend_serialport 0.1.0 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merfolk_backend_serialport 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate merfolk_backend_serialport 0.1.0
[INFO] tweaked toml for crates.io crate merfolk_backend_serialport 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 70 packages to latest compatible versions
[INFO] [stderr]       Adding derive_builder v0.10.2 (available: v0.20.2)
[INFO] [stderr]       Adding ron v0.6.6 (available: v0.8.1)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded merfolk v0.1.4
[INFO] [stderr]   Downloaded ron v0.6.6
[INFO] [stderr]   Downloaded spin v0.7.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 55dd995ff74746ed66d5b96b500a5087a5b619aceb1d78c76817b64b7b310e47
[INFO] running `Command { std: "docker" "start" "-a" "55dd995ff74746ed66d5b96b500a5087a5b619aceb1d78c76817b64b7b310e47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55dd995ff74746ed66d5b96b500a5087a5b619aceb1d78c76817b64b7b310e47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55dd995ff74746ed66d5b96b500a5087a5b619aceb1d78c76817b64b7b310e47", kill_on_drop: false }`
[INFO] [stdout] 55dd995ff74746ed66d5b96b500a5087a5b619aceb1d78c76817b64b7b310e47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ebba78fdfd175a232dfd698b2edd24c286639cb7188cdea670ec7f39dadb76f
[INFO] running `Command { std: "docker" "start" "-a" "3ebba78fdfd175a232dfd698b2edd24c286639cb7188cdea670ec7f39dadb76f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.164
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stderr]     Checking serde v1.0.215
[INFO] [stderr]     Checking unescaper v0.1.5
[INFO] [stderr]     Checking spin v0.7.1
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking tokio v1.41.1
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]    Compiling darling_macro v0.12.4
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling darling v0.12.4
[INFO] [stderr]    Compiling derive_builder_core v0.10.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ron v0.6.6
[INFO] [stderr]    Compiling derive_builder_macro v0.10.2
[INFO] [stderr]     Checking serialport v4.6.0
[INFO] [stderr]     Checking derive_builder v0.10.2
[INFO] [stderr]     Checking merfolk v0.1.4
[INFO] [stderr]     Checking merfolk_backend_serialport v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `merfolk_frontend_register`
[INFO] [stdout]    --> test/tests.rs:153:25
[INFO] [stdout]     |
[INFO] [stdout] 153 |   let register_caller = merfolk_frontend_register::Register::builder().build().unwrap();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared crate or module `merfolk_frontend_register`
[INFO] [stdout]     |
[INFO] [stdout] help: there is an enum variant `crate::Error::Register` and 1 other; try using the variant's enum
[INFO] [stdout]     |
[INFO] [stdout] 153 |   let register_caller = crate::Error::builder().build().unwrap();
[INFO] [stdout]     |                         ~~~~~~~~~~~~
[INFO] [stdout] 153 |   let register_caller = merfolk::Error::builder().build().unwrap();
[INFO] [stdout]     |                         ~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `merfolk_frontend_register`
[INFO] [stdout]    --> test/tests.rs:154:27
[INFO] [stdout]     |
[INFO] [stdout] 154 |   let register_receiver = merfolk_frontend_register::Register::builder().build().unwrap();
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared crate or module `merfolk_frontend_register`
[INFO] [stdout]     |
[INFO] [stdout] help: there is an enum variant `crate::Error::Register` and 1 other; try using the variant's enum
[INFO] [stdout]     |
[INFO] [stdout] 154 |   let register_receiver = crate::Error::builder().build().unwrap();
[INFO] [stdout]     |                           ~~~~~~~~~~~~
[INFO] [stdout] 154 |   let register_receiver = merfolk::Error::builder().build().unwrap();
[INFO] [stdout]     |                           ~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `merfolk_backend_serialport` (test "test") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3ebba78fdfd175a232dfd698b2edd24c286639cb7188cdea670ec7f39dadb76f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ebba78fdfd175a232dfd698b2edd24c286639cb7188cdea670ec7f39dadb76f", kill_on_drop: false }`
[INFO] [stdout] 3ebba78fdfd175a232dfd698b2edd24c286639cb7188cdea670ec7f39dadb76f