[INFO] cloning repository https://github.com/prushton2/arch-roomba
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/prushton2/arch-roomba" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprushton2%2Farch-roomba", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprushton2%2Farch-roomba'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13a462f35cb3038df50c1c435bb0d42f8a261783
[INFO] checking prushton2/arch-roomba against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprushton2%2Farch-roomba" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/prushton2/arch-roomba 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 git repo https://github.com/prushton2/arch-roomba
[INFO] finished tweaking git repo https://github.com/prushton2/arch-roomba
[INFO] tweaked toml for git repo https://github.com/prushton2/arch-roomba written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/prushton2/arch-roomba already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded generic-array v1.0.0
[INFO] [stderr]   Downloaded execute-command-macro-impl v0.1.10
[INFO] [stderr]   Downloaded execute-command-tokens v0.1.7
[INFO] [stderr]   Downloaded execute-command-macro v0.1.9
[INFO] [stderr]   Downloaded execute v0.2.13
[INFO] [stderr]   Downloaded syn v2.0.52
[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] ccb3db65d6d45d422525c0d7b5abaae1d6249f13211fe919f75690e44c7d1f11
[INFO] running `Command { std: "docker" "start" "-a" "ccb3db65d6d45d422525c0d7b5abaae1d6249f13211fe919f75690e44c7d1f11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccb3db65d6d45d422525c0d7b5abaae1d6249f13211fe919f75690e44c7d1f11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccb3db65d6d45d422525c0d7b5abaae1d6249f13211fe919f75690e44c7d1f11", kill_on_drop: false }`
[INFO] [stdout] ccb3db65d6d45d422525c0d7b5abaae1d6249f13211fe919f75690e44c7d1f11
[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] f2a177c6aaa533c3a70dd394a1f7dd7590512e9959dd80dcdf48fd8b5f103052
[INFO] running `Command { std: "docker" "start" "-a" "f2a177c6aaa533c3a70dd394a1f7dd7590512e9959dd80dcdf48fd8b5f103052", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling execute-command-tokens v0.1.7
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]     Checking generic-array v1.0.0
[INFO] [stderr]    Compiling execute-command-macro-impl v0.1.10
[INFO] [stderr]     Checking execute-command-macro v0.1.9
[INFO] [stderr]     Checking execute v0.2.13
[INFO] [stderr]     Checking arch-roomba v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.25s
[INFO] running `Command { std: "docker" "inspect" "f2a177c6aaa533c3a70dd394a1f7dd7590512e9959dd80dcdf48fd8b5f103052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2a177c6aaa533c3a70dd394a1f7dd7590512e9959dd80dcdf48fd8b5f103052", kill_on_drop: false }`
[INFO] [stdout] f2a177c6aaa533c3a70dd394a1f7dd7590512e9959dd80dcdf48fd8b5f103052
[INFO] checking prushton2/arch-roomba against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprushton2%2Farch-roomba" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/prushton2/arch-roomba 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 git repo https://github.com/prushton2/arch-roomba
[INFO] finished tweaking git repo https://github.com/prushton2/arch-roomba
[INFO] tweaked toml for git repo https://github.com/prushton2/arch-roomba written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/prushton2/arch-roomba already has a lockfile, it will not be regenerated
[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] 3ff4b1ce080159324d23cae599b44547918e3bd76fa4e40765b00a83b1e7bd2d
[INFO] running `Command { std: "docker" "start" "-a" "3ff4b1ce080159324d23cae599b44547918e3bd76fa4e40765b00a83b1e7bd2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ff4b1ce080159324d23cae599b44547918e3bd76fa4e40765b00a83b1e7bd2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ff4b1ce080159324d23cae599b44547918e3bd76fa4e40765b00a83b1e7bd2d", kill_on_drop: false }`
[INFO] [stdout] 3ff4b1ce080159324d23cae599b44547918e3bd76fa4e40765b00a83b1e7bd2d
[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] faf602b545ea27bb9d5e746959bf1495600ac25128e81e1c5dd67fa7b4acb9da
[INFO] running `Command { std: "docker" "start" "-a" "faf602b545ea27bb9d5e746959bf1495600ac25128e81e1c5dd67fa7b4acb9da", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling execute-command-tokens v0.1.7
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]     Checking generic-array v1.0.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/generic-array-1.0.0/src/hex.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         unsafe { core::hint::unreachable_unchecked() };
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type
[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 E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `generic-array` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "faf602b545ea27bb9d5e746959bf1495600ac25128e81e1c5dd67fa7b4acb9da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faf602b545ea27bb9d5e746959bf1495600ac25128e81e1c5dd67fa7b4acb9da", kill_on_drop: false }`
[INFO] [stdout] faf602b545ea27bb9d5e746959bf1495600ac25128e81e1c5dd67fa7b4acb9da