[INFO] cloning repository https://github.com/btckoguebike/spore-warriors-wasm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/btckoguebike/spore-warriors-wasm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbtckoguebike%2Fspore-warriors-wasm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbtckoguebike%2Fspore-warriors-wasm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e69ff5648c7e2f20ce14b98efa86c6ef8ad75265
[INFO] checking btckoguebike/spore-warriors-wasm against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbtckoguebike%2Fspore-warriors-wasm" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/btckoguebike/spore-warriors-wasm on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/btckoguebike/spore-warriors-wasm
[INFO] finished tweaking git repo https://github.com/btckoguebike/spore-warriors-wasm
[INFO] tweaked toml for git repo https://github.com/btckoguebike/spore-warriors-wasm written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/btckoguebike/spore-warriors-wasm 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/btckoguebike/spore-warriors-contract`
[INFO] [stderr]     Updating git repository `https://github.com/btckoguebike/spore-warriors-resources`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded molecule v0.7.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d528e92d9c801d0f066dd883d277ac698cf3f248f14966a23e67286e5f4a8e3f
[INFO] running `Command { std: "docker" "start" "-a" "d528e92d9c801d0f066dd883d277ac698cf3f248f14966a23e67286e5f4a8e3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d528e92d9c801d0f066dd883d277ac698cf3f248f14966a23e67286e5f4a8e3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d528e92d9c801d0f066dd883d277ac698cf3f248f14966a23e67286e5f4a8e3f", kill_on_drop: false }`
[INFO] [stdout] d528e92d9c801d0f066dd883d277ac698cf3f248f14966a23e67286e5f4a8e3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c9d9159be9ee7fd8a6a213208f70d60f16e325157109cb6343c6198fa3afa13
[INFO] running `Command { std: "docker" "start" "-a" "2c9d9159be9ee7fd8a6a213208f70d60f16e325157109cb6343c6198fa3afa13", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling bumpalo v3.15.4
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking faster-hex v0.6.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.92
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking molecule v0.7.5
[INFO] [stderr]     Checking spore-warriors-generated v0.1.0 (https://github.com/btckoguebike/spore-warriors-contract#eb77efb7)
[INFO] [stderr]     Checking spore-warriors-generated v0.1.0 (https://github.com/btckoguebike/spore-warriors-contract?branch=master#9f623f36)
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]    Compiling rlp-derive v0.1.0
[INFO] [stderr]     Checking rlp v0.5.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.92
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.92
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.92
[INFO] [stderr]     Checking js-sys v0.3.69
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.114
[INFO] [stderr]     Checking serde-wasm-bindgen v0.6.5
[INFO] [stderr]     Checking spore-warriors-core v0.1.0 (https://github.com/btckoguebike/spore-warriors-contract?branch=master#9f623f36)
[INFO] [stderr]     Checking spore-warriors-resources v0.1.0 (https://github.com/btckoguebike/spore-warriors-resources#7f2d8d07)
[INFO] [stderr]     Checking spore-warriors-wasm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.84s
[INFO] running `Command { std: "docker" "inspect" "2c9d9159be9ee7fd8a6a213208f70d60f16e325157109cb6343c6198fa3afa13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c9d9159be9ee7fd8a6a213208f70d60f16e325157109cb6343c6198fa3afa13", kill_on_drop: false }`
[INFO] [stdout] 2c9d9159be9ee7fd8a6a213208f70d60f16e325157109cb6343c6198fa3afa13
[INFO] checking btckoguebike/spore-warriors-wasm against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbtckoguebike%2Fspore-warriors-wasm" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/btckoguebike/spore-warriors-wasm on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/btckoguebike/spore-warriors-wasm
[INFO] finished tweaking git repo https://github.com/btckoguebike/spore-warriors-wasm
[INFO] tweaked toml for git repo https://github.com/btckoguebike/spore-warriors-wasm written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/btckoguebike/spore-warriors-wasm 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d2f0f9de631cba5b9954053653cdead228af16eb45828ed79fea90090aa76fb
[INFO] running `Command { std: "docker" "start" "-a" "1d2f0f9de631cba5b9954053653cdead228af16eb45828ed79fea90090aa76fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d2f0f9de631cba5b9954053653cdead228af16eb45828ed79fea90090aa76fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d2f0f9de631cba5b9954053653cdead228af16eb45828ed79fea90090aa76fb", kill_on_drop: false }`
[INFO] [stdout] 1d2f0f9de631cba5b9954053653cdead228af16eb45828ed79fea90090aa76fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07bf36639679ba9faee6b5862552508d8732e5666aa342601994508e56f046e9
[INFO] running `Command { std: "docker" "start" "-a" "07bf36639679ba9faee6b5862552508d8732e5666aa342601994508e56f046e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]    Compiling bumpalo v3.15.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking faster-hex v0.6.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.92
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking molecule v0.7.5
[INFO] [stderr]     Checking spore-warriors-generated v0.1.0 (https://github.com/btckoguebike/spore-warriors-contract?branch=master#9f623f36)
[INFO] [stderr]     Checking spore-warriors-generated v0.1.0 (https://github.com/btckoguebike/spore-warriors-contract#eb77efb7)
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]    Compiling rlp-derive v0.1.0
[INFO] [stderr]     Checking rlp v0.5.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.92
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.92
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.92
[INFO] [stderr]     Checking js-sys v0.3.69
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.114
[INFO] [stderr]     Checking spore-warriors-core v0.1.0 (https://github.com/btckoguebike/spore-warriors-contract?branch=master#9f623f36)
[INFO] [stderr]     Checking serde-wasm-bindgen v0.6.5
[INFO] [stdout] error[E0277]: a value of type `!` cannot be built from an iterator over elements of type `()`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/spore-warriors-contract-8af19ced5af99aae/9f623f3/game/core/src/battle/pve/iteration.rs:53:24
[INFO] [stdout]    |
[INFO] [stdout] 53 |             .collect::<Result<_, _>>()?;
[INFO] [stdout]    |              -------   ^^^^^^^^^^^^ value of type `!` cannot be built from `std::iter::Iterator<Item=()>`
[INFO] [stdout]    |              |
[INFO] [stdout]    |              required by a bound introduced by this call
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromIterator<()>` is not implemented for `!`, which is required by `Result<_, _>: FromIterator<Result<(), _>>`
[INFO] [stdout]    = help: the trait `FromIterator<Result<A, E>>` is implemented for `Result<V, E>`
[INFO] [stdout]    = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information)
[INFO] [stdout]    = help: did you intend to use the type `()` here instead?
[INFO] [stdout]    = note: required for `Result<!, errors::Error>` to implement `FromIterator<Result<(), errors::Error>>`
[INFO] [stdout] note: required by a bound in `collect`
[INFO] [stdout]   --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/core/src/iter/traits/iterator.rs:1999:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: a value of type `!` cannot be built from an iterator over elements of type `()`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/spore-warriors-contract-8af19ced5af99aae/9f623f3/game/core/src/battle/pve/log.rs:62:24
[INFO] [stdout]    |
[INFO] [stdout] 62 |             .collect::<Result<_, _>>()?;
[INFO] [stdout]    |              -------   ^^^^^^^^^^^^ value of type `!` cannot be built from `std::iter::Iterator<Item=()>`
[INFO] [stdout]    |              |
[INFO] [stdout]    |              required by a bound introduced by this call
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromIterator<()>` is not implemented for `!`, which is required by `Result<_, _>: FromIterator<Result<(), _>>`
[INFO] [stdout]    = help: the trait `FromIterator<Result<A, E>>` is implemented for `Result<V, E>`
[INFO] [stdout]    = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information)
[INFO] [stdout]    = help: did you intend to use the type `()` here instead?
[INFO] [stdout]    = note: required for `Result<!, errors::Error>` to implement `FromIterator<Result<(), errors::Error>>`
[INFO] [stdout] note: required by a bound in `collect`
[INFO] [stdout]   --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/core/src/iter/traits/iterator.rs:1999:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: a value of type `!` cannot be built from an iterator over elements of type `()`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/spore-warriors-contract-8af19ced5af99aae/9f623f3/game/core/src/map.rs:218:32
[INFO] [stdout]     |
[INFO] [stdout] 218 |                     .collect::<Result<_, _>>()?;
[INFO] [stdout]     |                      -------   ^^^^^^^^^^^^ value of type `!` cannot be built from `std::iter::Iterator<Item=()>`
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromIterator<()>` is not implemented for `!`, which is required by `Result<_, _>: FromIterator<Result<(), _>>`
[INFO] [stdout]     = help: the trait `FromIterator<Result<A, E>>` is implemented for `Result<V, E>`
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information)
[INFO] [stdout]     = help: did you intend to use the type `()` here instead?
[INFO] [stdout]     = note: required for `Result<!, errors::Error>` to implement `FromIterator<Result<(), errors::Error>>`
[INFO] [stdout] note: required by a bound in `collect`
[INFO] [stdout]    --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/core/src/iter/traits/iterator.rs:1999:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: a value of type `!` cannot be built from an iterator over elements of type `()`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/spore-warriors-contract-8af19ced5af99aae/9f623f3/game/core/src/systems/instant.rs:79:24
[INFO] [stdout]    |
[INFO] [stdout] 79 |             .collect::<Result<_, _>>()?;
[INFO] [stdout]    |              -------   ^^^^^^^^^^^^ value of type `!` cannot be built from `std::iter::Iterator<Item=()>`
[INFO] [stdout]    |              |
[INFO] [stdout]    |              required by a bound introduced by this call
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `FromIterator<()>` is not implemented for `!`, which is required by `Result<_, _>: FromIterator<Result<(), errors::Error>>`
[INFO] [stdout]    = help: the trait `FromIterator<Result<A, E>>` is implemented for `Result<V, E>`
[INFO] [stdout]    = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information)
[INFO] [stdout]    = help: did you intend to use the type `()` here instead?
[INFO] [stdout]    = note: required for `Result<!, errors::Error>` to implement `FromIterator<Result<(), errors::Error>>`
[INFO] [stdout] note: required by a bound in `collect`
[INFO] [stdout]   --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/core/src/iter/traits/iterator.rs:1999:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking spore-warriors-resources v0.1.0 (https://github.com/btckoguebike/spore-warriors-resources#7f2d8d07)
[INFO] [stdout] error[E0277]: a value of type `!` cannot be built from an iterator over elements of type `()`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/spore-warriors-contract-8af19ced5af99aae/9f623f3/game/core/src/wrappings.rs:604:24
[INFO] [stdout]     |
[INFO] [stdout] 604 |             .collect::<Result<_, _>>()?;
[INFO] [stdout]     |              -------   ^^^^^^^^^^^^ value of type `!` cannot be built from `std::iter::Iterator<Item=()>`
[INFO] [stdout]     |              |
[INFO] [stdout]     |              required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromIterator<()>` is not implemented for `!`, which is required by `Result<_, _>: FromIterator<Result<(), errors::Error>>`
[INFO] [stdout]     = help: the trait `FromIterator<Result<A, E>>` is implemented for `Result<V, E>`
[INFO] [stdout]     = note: this error might have been caused by changes to Rust's type-inference algorithm (see issue #48950 <https://github.com/rust-lang/rust/issues/48950> for more information)
[INFO] [stdout]     = help: did you intend to use the type `()` here instead?
[INFO] [stdout]     = note: required for `Result<!, errors::Error>` to implement `FromIterator<Result<(), errors::Error>>`
[INFO] [stdout] note: required by a bound in `collect`
[INFO] [stdout]    --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/core/src/iter/traits/iterator.rs:1999:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spore-warriors-core` (lib) due to 6 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "07bf36639679ba9faee6b5862552508d8732e5666aa342601994508e56f046e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07bf36639679ba9faee6b5862552508d8732e5666aa342601994508e56f046e9", kill_on_drop: false }`
[INFO] [stdout] 07bf36639679ba9faee6b5862552508d8732e5666aa342601994508e56f046e9