[INFO] fetching crate redgex 0.3.1...
[INFO] testing redgex-0.3.1 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate redgex 0.3.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate redgex 0.3.1
[INFO] finished tweaking crates.io crate redgex 0.3.1
[INFO] tweaked toml for crates.io crate redgex 0.3.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate redgex 0.3.1 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] crate crates.io crate redgex 0.3.1 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.as-underscore` is deprecated in favor of `lints.clippy.as_underscore` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.get-unwrap` is deprecated in favor of `lints.clippy.get_unwrap` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.missing-const-for-fn` is deprecated in favor of `lints.clippy.missing_const_for_fn` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.str-to-string` is deprecated in favor of `lints.clippy.str_to_string` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.too-many-lines` is deprecated in favor of `lints.clippy.too_many_lines` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.unused-enumerate-index` is deprecated in favor of `lints.clippy.unused_enumerate_index` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.unwrap-used` is deprecated in favor of `lints.clippy.unwrap_used` and will not work in a future edition
[INFO] [stderr] warning: `redgex` (manifest) generated 7 warnings
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 0a25c9530715de59a4d241d9b9bcce72461ff85cdb46bea9d87e51a139cada5a
[INFO] running `Command { std: "docker" "start" "0a25c9530715de59a4d241d9b9bcce72461ff85cdb46bea9d87e51a139cada5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a25c9530715de59a4d241d9b9bcce72461ff85cdb46bea9d87e51a139cada5a", 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" "0a25c9530715de59a4d241d9b9bcce72461ff85cdb46bea9d87e51a139cada5a" "/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" "0a25c9530715de59a4d241d9b9bcce72461ff85cdb46bea9d87e51a139cada5a", 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" "0a25c9530715de59a4d241d9b9bcce72461ff85cdb46bea9d87e51a139cada5a" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.as-underscore` is deprecated in favor of `lints.clippy.as_underscore` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.get-unwrap` is deprecated in favor of `lints.clippy.get_unwrap` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.missing-const-for-fn` is deprecated in favor of `lints.clippy.missing_const_for_fn` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.str-to-string` is deprecated in favor of `lints.clippy.str_to_string` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.too-many-lines` is deprecated in favor of `lints.clippy.too_many_lines` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.unused-enumerate-index` is deprecated in favor of `lints.clippy.unused_enumerate_index` and will not work in a future edition
[INFO] [stderr] warning: Cargo.toml: `lints.clippy.unwrap-used` is deprecated in favor of `lints.clippy.unwrap_used` and will not work in a future edition
[INFO] [stderr] warning: `redgex` (manifest) generated 7 warnings
[INFO] [stderr]    Compiling redgex v0.3.1 (/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(yield_expr)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `redgex` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "0a25c9530715de59a4d241d9b9bcce72461ff85cdb46bea9d87e51a139cada5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a25c9530715de59a4d241d9b9bcce72461ff85cdb46bea9d87e51a139cada5a", kill_on_drop: false }`
[INFO] [stdout] 0a25c9530715de59a4d241d9b9bcce72461ff85cdb46bea9d87e51a139cada5a
