[INFO] fetching crate splitrc 0.1.4...
[INFO] checking splitrc-0.1.4 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate splitrc 0.1.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate splitrc 0.1.4 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate splitrc 0.1.4
[INFO] finished tweaking crates.io crate splitrc 0.1.4
[INFO] tweaked toml for crates.io crate splitrc 0.1.4 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d260d10ba2ffff9363808300d6ac207919f85d805cb0be5f009fa05810f91edf
[INFO] running `Command { std: "docker" "start" "-a" "d260d10ba2ffff9363808300d6ac207919f85d805cb0be5f009fa05810f91edf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d260d10ba2ffff9363808300d6ac207919f85d805cb0be5f009fa05810f91edf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d260d10ba2ffff9363808300d6ac207919f85d805cb0be5f009fa05810f91edf", kill_on_drop: false }`
[INFO] [stdout] d260d10ba2ffff9363808300d6ac207919f85d805cb0be5f009fa05810f91edf
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0372a140867f936d1cbc5feb5cad8d6fb7eb1e8239e841e522cddbbf63f44003
[INFO] running `Command { std: "docker" "start" "-a" "0372a140867f936d1cbc5feb5cad8d6fb7eb1e8239e841e522cddbbf63f44003", kill_on_drop: false }`
[INFO] [stderr]     Checking splitrc v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "0372a140867f936d1cbc5feb5cad8d6fb7eb1e8239e841e522cddbbf63f44003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0372a140867f936d1cbc5feb5cad8d6fb7eb1e8239e841e522cddbbf63f44003", kill_on_drop: false }`
[INFO] [stdout] 0372a140867f936d1cbc5feb5cad8d6fb7eb1e8239e841e522cddbbf63f44003
[INFO] checking splitrc-0.1.4 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate splitrc 0.1.4 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate splitrc 0.1.4 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate splitrc 0.1.4
[INFO] finished tweaking crates.io crate splitrc 0.1.4
[INFO] tweaked toml for crates.io crate splitrc 0.1.4 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 834061b28b30b43a4071ea9f9ca04a097e9ce7c46f65b5be537a673cd71e5b0c
[INFO] running `Command { std: "docker" "start" "-a" "834061b28b30b43a4071ea9f9ca04a097e9ce7c46f65b5be537a673cd71e5b0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "834061b28b30b43a4071ea9f9ca04a097e9ce7c46f65b5be537a673cd71e5b0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "834061b28b30b43a4071ea9f9ca04a097e9ce7c46f65b5be537a673cd71e5b0c", kill_on_drop: false }`
[INFO] [stdout] 834061b28b30b43a4071ea9f9ca04a097e9ce7c46f65b5be537a673cd71e5b0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 193e9e652ba62db991ea9c14a77c02c804db40a5af33dd4e15da5d23bef47045
[INFO] running `Command { std: "docker" "start" "-a" "193e9e652ba62db991ea9c14a77c02c804db40a5af33dd4e15da5d23bef47045", kill_on_drop: false }`
[INFO] [stderr]     Checking splitrc v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed for `Result<_, Box<dyn Any + Send>>`
[INFO] [stdout]   --> tests/tests.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 84 |       let result = panic::catch_unwind(|| loop {
[INFO] [stdout]    |  _________^^^^^^___-
[INFO] [stdout] 85 | |         mem::forget(tx.clone())
[INFO] [stdout] 86 | |     });
[INFO] [stdout]    | |______- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving `result` an explicit type, where the type for type parameter `R` is specified
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let result: Result<_, Box<dyn Any + Send>> = panic::catch_unwind(|| loop {
[INFO] [stdout]    |               ++++++++++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `Result<_, Box<dyn Any + Send>>`
[INFO] [stdout]   --> tests/tests.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |       let result = panic::catch_unwind(|| loop {
[INFO] [stdout]    |  _________^^^^^^___-
[INFO] [stdout] 97 | |         mem::forget(rx.clone())
[INFO] [stdout] 98 | |     });
[INFO] [stdout]    | |______- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout] help: consider giving `result` an explicit type, where the type for type parameter `R` is specified
[INFO] [stdout]    |
[INFO] [stdout] 96 |     let result: Result<_, Box<dyn Any + Send>> = panic::catch_unwind(|| loop {
[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 E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `splitrc` (test "tests") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "193e9e652ba62db991ea9c14a77c02c804db40a5af33dd4e15da5d23bef47045", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "193e9e652ba62db991ea9c14a77c02c804db40a5af33dd4e15da5d23bef47045", kill_on_drop: false }`
[INFO] [stdout] 193e9e652ba62db991ea9c14a77c02c804db40a5af33dd4e15da5d23bef47045