[INFO] fetching crate merfolk_frontend_logger 0.1.0...
[INFO] testing merfolk_frontend_logger-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate merfolk_frontend_logger 0.1.0 into /workspace/builds/worker-49/source
[INFO] validating manifest of crates.io crate merfolk_frontend_logger 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merfolk_frontend_logger 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate merfolk_frontend_logger 0.1.0
[INFO] tweaked toml for crates.io crate merfolk_frontend_logger 0.1.0 written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2f70d3c1e1a7131f5f4dc3ebdd6446963cbc98ab61a7402759abc42b107c9ba
[INFO] running `Command { std: "docker" "start" "-a" "b2f70d3c1e1a7131f5f4dc3ebdd6446963cbc98ab61a7402759abc42b107c9ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2f70d3c1e1a7131f5f4dc3ebdd6446963cbc98ab61a7402759abc42b107c9ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2f70d3c1e1a7131f5f4dc3ebdd6446963cbc98ab61a7402759abc42b107c9ba", kill_on_drop: false }`
[INFO] [stdout] b2f70d3c1e1a7131f5f4dc3ebdd6446963cbc98ab61a7402759abc42b107c9ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41031defc78bbd17d2f4634a4abc1303491b2fec9385f77e0f76acb351204d44
[INFO] running `Command { std: "docker" "start" "-a" "41031defc78bbd17d2f4634a4abc1303491b2fec9385f77e0f76acb351204d44", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling spin v0.7.1
[INFO] [stderr]    Compiling wildmatch v1.1.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[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 thiserror v1.0.29
[INFO] [stderr]    Compiling derive_builder_macro v0.10.2
[INFO] [stderr]    Compiling derive_builder v0.10.2
[INFO] [stderr]    Compiling merfolk v0.1.4
[INFO] [stderr]    Compiling merfolk_frontend_logger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.17s
[INFO] running `Command { std: "docker" "inspect" "41031defc78bbd17d2f4634a4abc1303491b2fec9385f77e0f76acb351204d44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41031defc78bbd17d2f4634a4abc1303491b2fec9385f77e0f76acb351204d44", kill_on_drop: false }`
[INFO] [stdout] 41031defc78bbd17d2f4634a4abc1303491b2fec9385f77e0f76acb351204d44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 708c9358e3fc4101c61ec437e013724cdadb7045d9eb41387595c7129ed243e9
[INFO] running `Command { std: "docker" "start" "-a" "708c9358e3fc4101c61ec437e013724cdadb7045d9eb41387595c7129ed243e9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling merfolk_frontend_logger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `merfolk_backend_in_process`
[INFO] [stdout]  --> test/tests.rs:7:27
[INFO] [stdout]   |
[INFO] [stdout] 7 |   let (to, from): (Sender<merfolk_backend_in_process::InProcessChannel>, Receiver<merfolk_backend_in_process::InProcessChannel>) = channe...
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared crate or module `merfolk_backend_in_process`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `merfolk_backend_in_process`
[INFO] [stdout]  --> test/tests.rs:7:83
[INFO] [stdout]   |
[INFO] [stdout] 7 | ...essChannel>, Receiver<merfolk_backend_in_process::InProcessChannel>) = channel(1);
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared crate or module `merfolk_backend_in_process`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `merfolk_backend_in_process`
[INFO] [stdout]   --> test/tests.rs:14:14
[INFO] [stdout]    |
[INFO] [stdout] 14 |     .backend(merfolk_backend_in_process::InProcess::builder().from(from).build().unwrap())
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared crate or module `merfolk_backend_in_process`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `merfolk_backend_in_process`
[INFO] [stdout]   --> test/tests.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 |     .backend(merfolk_backend_in_process::InProcess::builder().to(to).build().unwrap())
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^ use of undeclared crate or module `merfolk_backend_in_process`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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_frontend_logger` due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "708c9358e3fc4101c61ec437e013724cdadb7045d9eb41387595c7129ed243e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "708c9358e3fc4101c61ec437e013724cdadb7045d9eb41387595c7129ed243e9", kill_on_drop: false }`
[INFO] [stdout] 708c9358e3fc4101c61ec437e013724cdadb7045d9eb41387595c7129ed243e9