[INFO] fetching crate lark-test-generate 0.1.0...
[INFO] checking lark-test-generate-0.1.0 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate lark-test-generate 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate lark-test-generate 0.1.0 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate lark-test-generate 0.1.0
[INFO] finished tweaking crates.io crate lark-test-generate 0.1.0
[INFO] tweaked toml for crates.io crate lark-test-generate 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lark-test v0.1.0
[INFO] [stderr]   Downloaded lark-actor v0.1.0
[INFO] [stderr]   Downloaded lark-type-check v0.1.0
[INFO] [stderr]   Downloaded lark-language-server v0.1.0
[INFO] [stderr]   Downloaded lark-eval v0.1.0
[INFO] [stderr]   Downloaded lark-query-system v0.1.0
[INFO] [stderr]   Downloaded lark-cli v0.1.0
[INFO] [stderr]   Downloaded lark-build v0.1.0
[INFO] [stderr]   Downloaded flexi_logger v0.10.7
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e6a4b850968b693295c8aa1fdc624b46d4afa43a51489a7ac5e9f5949e1d09a6
[INFO] running `"docker" "start" "-a" "e6a4b850968b693295c8aa1fdc624b46d4afa43a51489a7ac5e9f5949e1d09a6"`
[INFO] [stderr]     Checking datafrog v2.0.1
[INFO] [stderr]     Checking cc v1.0.46
[INFO] [stderr]     Checking diff v0.1.11
[INFO] [stderr]     Checking unindent v0.1.5
[INFO] [stderr]     Checking generational-arena v0.2.3
[INFO] [stderr]     Checking render-tree v0.1.1
[INFO] [stderr]     Checking lark-debug-with v0.1.0
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling lark-debug-derive v0.1.0
[INFO] [stderr]     Checking flexi_logger v0.10.7
[INFO] [stderr]     Checking lark-collections v0.1.0
[INFO] [stderr]     Checking url_serde v0.2.0
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking lark-unify v0.1.0
[INFO] [stderr]     Checking languageserver-types v0.53.1
[INFO] [stderr]     Checking lark-intern v0.1.0
[INFO] [stderr]     Checking lark-string v0.1.0
[INFO] [stderr]     Checking language-reporting v0.3.1
[INFO] [stderr]     Checking salsa v0.9.2
[INFO] [stderr]     Checking lark-span v0.1.0
[INFO] [stderr]     Checking lark-actor v0.1.0
[INFO] [stderr]     Checking lark-language-server v0.1.0
[INFO] [stderr]     Checking lark-error v0.1.0
[INFO] [stderr]     Checking lark-entity v0.1.0
[INFO] [stderr]     Checking lark-ty v0.1.0
[INFO] [stderr]     Checking lark-hir v0.1.0
[INFO] [stderr]     Checking lark-parser v0.1.0
[INFO] [stderr]     Checking lark-pretty-print v0.1.0
[INFO] [stderr]     Checking lark-type-check v0.1.0
[INFO] [stderr]     Checking lark-query-system v0.1.0
[INFO] [stderr]     Checking lark-eval v0.1.0
[INFO] [stderr]     Checking lark-build v0.1.0
[INFO] [stderr]     Checking lark-cli v0.1.0
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lark-cli-0.1.0/src/lib.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![feature(existential_type)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: removed in favor of `#![feature(type_alias_impl_trait)]`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lark-cli-0.1.0/src/lib.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![feature(existential_type)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0557`.
[INFO] [stderr] error: could not compile `lark-cli`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e6a4b850968b693295c8aa1fdc624b46d4afa43a51489a7ac5e9f5949e1d09a6"`
[INFO] running `"docker" "rm" "-f" "e6a4b850968b693295c8aa1fdc624b46d4afa43a51489a7ac5e9f5949e1d09a6"`
[INFO] [stdout] e6a4b850968b693295c8aa1fdc624b46d4afa43a51489a7ac5e9f5949e1d09a6