[INFO] fetching crate rich-result 0.1.2...
[INFO] testing rich-result-0.1.2 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate rich-result 0.1.2 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate rich-result 0.1.2
[INFO] finished tweaking crates.io crate rich-result 0.1.2
[INFO] tweaked toml for crates.io crate rich-result 0.1.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rich-result 0.1.2 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4dfe66d5ba15d0c2075e742801a3ebb4813d7a837292ce8ffe96e93e3642060c
[INFO] running `Command { std: "docker" "start" "4dfe66d5ba15d0c2075e742801a3ebb4813d7a837292ce8ffe96e93e3642060c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4dfe66d5ba15d0c2075e742801a3ebb4813d7a837292ce8ffe96e93e3642060c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4dfe66d5ba15d0c2075e742801a3ebb4813d7a837292ce8ffe96e93e3642060c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4dfe66d5ba15d0c2075e742801a3ebb4813d7a837292ce8ffe96e93e3642060c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4dfe66d5ba15d0c2075e742801a3ebb4813d7a837292ce8ffe96e93e3642060c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling rich-result v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait_v2)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Result<Infallible, Infallible, FE>: Residual<LocalResult<T, RE>>` is not satisfied
[INFO] [stdout]    --> src/lib.rs:605:21
[INFO] [stdout]     |
[INFO] [stdout] 605 |     type Residual = Result<Infallible, Infallible, FE>;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the nightly-only, unstable trait `Residual<LocalResult<T, RE>>` is not implemented for `Result<Infallible, Infallible, FE>`
[INFO] [stdout]    --> src/lib.rs:104:1
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub enum Result<T, RE, FE> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: the following other types implement trait `Residual<O>`
[INFO] [stdout]    --> /rustc/dfb0accb7f508ae8be965d8629557221c889dd98/library/core/src/result.rs:2209:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `core::result::Result<Infallible, E>` implements `Residual<T>`
[INFO] [stdout]    --> /rustc/dfb0accb7f508ae8be965d8629557221c889dd98/library/core/src/option.rs:2901:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Option<Infallible>` implements `Residual<T>`
[INFO] [stdout]    --> /rustc/dfb0accb7f508ae8be965d8629557221c889dd98/library/core/src/ops/control_flow.rs:138:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ControlFlow<B, Infallible>` implements `Residual<C>`
[INFO] [stdout] note: required by a bound in `core::ops::Try::Residual`
[INFO] [stdout]    --> /rustc/dfb0accb7f508ae8be965d8629557221c889dd98/library/core/src/ops/try_trait.rs:160:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `LocalResult<Infallible, RE>: Residual<T>` is not satisfied
[INFO] [stdout]    --> src/lib.rs:735:21
[INFO] [stdout]     |
[INFO] [stdout] 735 |     type Residual = LocalResult<Infallible, RE>;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the nightly-only, unstable trait `Residual<T>` is not implemented for `LocalResult<Infallible, RE>`
[INFO] [stdout]    --> src/lib.rs:625:1
[INFO] [stdout]     |
[INFO] [stdout] 625 | pub enum LocalResult<T, RE> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: the following other types implement trait `Residual<O>`
[INFO] [stdout]    --> /rustc/dfb0accb7f508ae8be965d8629557221c889dd98/library/core/src/result.rs:2209:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `core::result::Result<Infallible, E>`
[INFO] [stdout]    --> /rustc/dfb0accb7f508ae8be965d8629557221c889dd98/library/core/src/option.rs:2901:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Option<Infallible>`
[INFO] [stdout] note: required by a bound in `core::ops::Try::Residual`
[INFO] [stdout]    --> /rustc/dfb0accb7f508ae8be965d8629557221c889dd98/library/core/src/ops/try_trait.rs:160:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rich-result` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "4dfe66d5ba15d0c2075e742801a3ebb4813d7a837292ce8ffe96e93e3642060c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dfe66d5ba15d0c2075e742801a3ebb4813d7a837292ce8ffe96e93e3642060c", kill_on_drop: false }`
[INFO] [stdout] 4dfe66d5ba15d0c2075e742801a3ebb4813d7a837292ce8ffe96e93e3642060c
