[INFO] fetching crate merfolk_backend_serialport 0.1.0...
[INFO] checking merfolk_backend_serialport-0.1.0 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4
[INFO] extracting crate merfolk_backend_serialport 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate merfolk_backend_serialport 0.1.0 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "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-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 65 packages
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding darling v0.12.4 (latest: v0.20.8)
[INFO] [stderr]       Adding darling_core v0.12.4 (latest: v0.20.8)
[INFO] [stderr]       Adding darling_macro v0.12.4 (latest: v0.20.8)
[INFO] [stderr]       Adding derive_builder v0.10.2 (latest: v0.20.0)
[INFO] [stderr]       Adding derive_builder_core v0.10.2 (latest: v0.20.0)
[INFO] [stderr]       Adding derive_builder_macro v0.10.2 (latest: v0.20.0)
[INFO] [stderr]       Adding nix v0.26.4 (latest: v0.28.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding ron v0.6.6 (latest: v0.8.1)
[INFO] [stderr]       Adding spin v0.7.1 (latest: v0.9.8)
[INFO] [stderr]       Adding strsim v0.10.0 (latest: v0.11.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded io-kit-sys v0.4.1
[INFO] [stderr]   Downloaded merfolk v0.1.4
[INFO] [stderr]   Downloaded serialport v4.3.0
[INFO] [stderr]   Downloaded spin v0.7.1
[INFO] [stderr]   Downloaded libudev v0.3.0
[INFO] [stderr]   Downloaded unescaper v0.1.4
[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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dbbaadee5cd8a1f2b4a1a02b74cdf6f60a39d596d06bd40a6701c5c23c21ab90
[INFO] running `Command { std: "docker" "start" "-a" "dbbaadee5cd8a1f2b4a1a02b74cdf6f60a39d596d06bd40a6701c5c23c21ab90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbbaadee5cd8a1f2b4a1a02b74cdf6f60a39d596d06bd40a6701c5c23c21ab90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbbaadee5cd8a1f2b4a1a02b74cdf6f60a39d596d06bd40a6701c5c23c21ab90", kill_on_drop: false }`
[INFO] [stdout] dbbaadee5cd8a1f2b4a1a02b74cdf6f60a39d596d06bd40a6701c5c23c21ab90
[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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf9bc1d1c7b394a215a2c16f0d76148b13713b48b9514a20a2468fa30c795c87
[INFO] running `Command { std: "docker" "start" "-a" "cf9bc1d1c7b394a215a2c16f0d76148b13713b48b9514a20a2468fa30c795c87", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling anyhow v1.0.81
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking spin v0.7.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking unescaper v0.1.4
[INFO] [stderr]     Checking getrandom v0.2.13
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking serialport v4.3.0
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stderr]    Compiling darling_macro v0.12.4
[INFO] [stderr]    Compiling darling v0.12.4
[INFO] [stderr]    Compiling derive_builder_core v0.10.2
[INFO] [stderr]    Compiling derive_builder_macro v0.10.2
[INFO] [stderr]     Checking ron v0.6.6
[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().build().unwrap();
[INFO] [stdout]     |                         ~~~~~~~~~~~~
[INFO] [stdout] 153 |   let register_caller = merfolk::Error().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().build().unwrap();
[INFO] [stdout]     |                           ~~~~~~~~~~~~
[INFO] [stdout] 154 |   let register_receiver = merfolk::Error().build().unwrap();
[INFO] [stdout]     |                           ~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[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 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "cf9bc1d1c7b394a215a2c16f0d76148b13713b48b9514a20a2468fa30c795c87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf9bc1d1c7b394a215a2c16f0d76148b13713b48b9514a20a2468fa30c795c87", kill_on_drop: false }`
[INFO] [stdout] cf9bc1d1c7b394a215a2c16f0d76148b13713b48b9514a20a2468fa30c795c87
[INFO] checking merfolk_backend_serialport-0.1.0 against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-4
[INFO] extracting crate merfolk_backend_serialport 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate merfolk_backend_serialport 0.1.0 on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "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-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4874ef6fee873c3d2f0569b74eb39b2a03e85ccca228697fd7613cb8994a4b0
[INFO] running `Command { std: "docker" "start" "-a" "f4874ef6fee873c3d2f0569b74eb39b2a03e85ccca228697fd7613cb8994a4b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4874ef6fee873c3d2f0569b74eb39b2a03e85ccca228697fd7613cb8994a4b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4874ef6fee873c3d2f0569b74eb39b2a03e85ccca228697fd7613cb8994a4b0", kill_on_drop: false }`
[INFO] [stdout] f4874ef6fee873c3d2f0569b74eb39b2a03e85ccca228697fd7613cb8994a4b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b1332c2d4504cecef42135f97d653fb9debf2e006dd74a67866c01ddd1bb129
[INFO] running `Command { std: "docker" "start" "-a" "4b1332c2d4504cecef42135f97d653fb9debf2e006dd74a67866c01ddd1bb129", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "4b1332c2d4504cecef42135f97d653fb9debf2e006dd74a67866c01ddd1bb129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b1332c2d4504cecef42135f97d653fb9debf2e006dd74a67866c01ddd1bb129", kill_on_drop: false }`
[INFO] [stdout] 4b1332c2d4504cecef42135f97d653fb9debf2e006dd74a67866c01ddd1bb129