[INFO] fetching crate koto_random 0.12.0...
[INFO] checking koto_random-0.12.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate koto_random 0.12.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate koto_random 0.12.0 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 koto_random 0.12.0
[INFO] finished tweaking crates.io crate koto_random 0.12.0
[INFO] tweaked toml for crates.io crate koto_random 0.12.0 written to /workspace/builds/worker-4-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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 60 packages
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.55.0)
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded koto_runtime v0.12.0
[INFO] [stderr]   Downloaded koto_bytecode v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4ca98476641ec1f803f6fce7e7594a473bd4495d55a8fcbe42025c75b80d09f5
[INFO] running `Command { std: "docker" "start" "-a" "4ca98476641ec1f803f6fce7e7594a473bd4495d55a8fcbe42025c75b80d09f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ca98476641ec1f803f6fce7e7594a473bd4495d55a8fcbe42025c75b80d09f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ca98476641ec1f803f6fce7e7594a473bd4495d55a8fcbe42025c75b80d09f5", kill_on_drop: false }`
[INFO] [stdout] 4ca98476641ec1f803f6fce7e7594a473bd4495d55a8fcbe42025c75b80d09f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8e8d3927a259e6a634cff74498052c5e6f904b7f20da19604a6cd7a74e25b5fe
[INFO] running `Command { std: "docker" "start" "-a" "8e8d3927a259e6a634cff74498052c5e6f904b7f20da19604a6cd7a74e25b5fe", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.2.4
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking koto_memory v0.12.0
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking dunce v1.0.4
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking koto_lexer v0.12.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking koto_parser v0.12.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking koto_bytecode v0.12.0
[INFO] [stderr]     Checking koto_runtime v0.12.0
[INFO] [stderr]     Checking koto_random v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.15s
[INFO] running `Command { std: "docker" "inspect" "8e8d3927a259e6a634cff74498052c5e6f904b7f20da19604a6cd7a74e25b5fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e8d3927a259e6a634cff74498052c5e6f904b7f20da19604a6cd7a74e25b5fe", kill_on_drop: false }`
[INFO] [stdout] 8e8d3927a259e6a634cff74498052c5e6f904b7f20da19604a6cd7a74e25b5fe
[INFO] checking koto_random-0.12.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate koto_random 0.12.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate koto_random 0.12.0 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 koto_random 0.12.0
[INFO] finished tweaking crates.io crate koto_random 0.12.0
[INFO] tweaked toml for crates.io crate koto_random 0.12.0 written to /workspace/builds/worker-4-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] [stderr]     Updating crates.io index
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ad86f3d336551b05d6e42448d82c2d0e78996745b63a9a9d9f61c6931f7bfbd6
[INFO] running `Command { std: "docker" "start" "-a" "ad86f3d336551b05d6e42448d82c2d0e78996745b63a9a9d9f61c6931f7bfbd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad86f3d336551b05d6e42448d82c2d0e78996745b63a9a9d9f61c6931f7bfbd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad86f3d336551b05d6e42448d82c2d0e78996745b63a9a9d9f61c6931f7bfbd6", kill_on_drop: false }`
[INFO] [stdout] ad86f3d336551b05d6e42448d82c2d0e78996745b63a9a9d9f61c6931f7bfbd6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] fda6c6c80c5ac473a47146b8f18c5b0c2f69b440b6839e43a988572e906a802d
[INFO] running `Command { std: "docker" "start" "-a" "fda6c6c80c5ac473a47146b8f18c5b0c2f69b440b6839e43a988572e906a802d", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking unicode-xid v0.2.4
[INFO] [stderr]     Checking koto_memory v0.12.0
[INFO] [stderr]     Checking dunce v1.0.4
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking koto_lexer v0.12.0
[INFO] [stderr]     Checking koto_parser v0.12.0
[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 koto_bytecode v0.12.0
[INFO] [stderr]     Checking koto_runtime v0.12.0
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/koto_runtime-0.12.0/src/vm.rs:2175:21
[INFO] [stdout]      |
[INFO] [stdout] 2175 |                     return runtime_error!("Unable to index {}", value.type_as_string());
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot satisfy `_ -> _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `koto_runtime` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "fda6c6c80c5ac473a47146b8f18c5b0c2f69b440b6839e43a988572e906a802d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fda6c6c80c5ac473a47146b8f18c5b0c2f69b440b6839e43a988572e906a802d", kill_on_drop: false }`
[INFO] [stdout] fda6c6c80c5ac473a47146b8f18c5b0c2f69b440b6839e43a988572e906a802d