[INFO] fetching crate declarative_type_state 0.8.0...
[INFO] testing declarative_type_state-0.8.0 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate declarative_type_state 0.8.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate declarative_type_state 0.8.0
[INFO] finished tweaking crates.io crate declarative_type_state 0.8.0
[INFO] tweaked toml for crates.io crate declarative_type_state 0.8.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate declarative_type_state 0.8.0 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "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" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to highest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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] ee7bec7c8a53be3f05444538bdb9fcc086ce2a8edd89b0a76aa321032179939b
[INFO] running `Command { std: "docker" "start" "ee7bec7c8a53be3f05444538bdb9fcc086ce2a8edd89b0a76aa321032179939b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee7bec7c8a53be3f05444538bdb9fcc086ce2a8edd89b0a76aa321032179939b", 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" "ee7bec7c8a53be3f05444538bdb9fcc086ce2a8edd89b0a76aa321032179939b" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee7bec7c8a53be3f05444538bdb9fcc086ce2a8edd89b0a76aa321032179939b", 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" "ee7bec7c8a53be3f05444538bdb9fcc086ce2a8edd89b0a76aa321032179939b" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling declarative_type_state v0.8.0 (/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 `TNext: Residual<TCurr>` is not satisfied
[INFO] [stdout]   --> src/transition_result.rs:17:18
[INFO] [stdout]    |
[INFO] [stdout] 17 |     type Residual = TNext;
[INFO] [stdout]    |                     ^^^^^ the nightly-only, unstable trait `Residual<TCurr>` is not implemented for `TNext`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `std::ops::Try::Residual`
[INFO] [stdout]   --> /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/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 `declarative_type_state` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ee7bec7c8a53be3f05444538bdb9fcc086ce2a8edd89b0a76aa321032179939b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee7bec7c8a53be3f05444538bdb9fcc086ce2a8edd89b0a76aa321032179939b", kill_on_drop: false }`
[INFO] [stdout] ee7bec7c8a53be3f05444538bdb9fcc086ce2a8edd89b0a76aa321032179939b
