[INFO] crate lark-cli 0.1.0 is already in cache
[INFO] testing lark-cli-0.1.0 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] extracting crate lark-cli 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate lark-cli 0.1.0 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate lark-cli 0.1.0
[INFO] finished tweaking crates.io crate lark-cli 0.1.0
[INFO] tweaked toml for crates.io crate lark-cli 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8b35e7d125c6271a4eaea319fd61e558713cd04b48715775e029700a5c9cf38c
[INFO] running `"docker" "start" "-a" "8b35e7d125c6271a4eaea319fd61e558713cd04b48715775e029700a5c9cf38c"`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling lark-unify v0.1.0
[INFO] [stderr]    Compiling render-tree v0.1.1
[INFO] [stderr]    Compiling salsa v0.9.2
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling tempfile v2.2.0
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling flexi_logger v0.10.7
[INFO] [stderr]    Compiling url_serde v0.2.0
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling language-reporting v0.3.1
[INFO] [stderr]    Compiling languageserver-types v0.53.1
[INFO] [stderr]    Compiling lark-span v0.1.0
[INFO] [stderr]    Compiling lark-actor v0.1.0
[INFO] [stderr]    Compiling lark-language-server v0.1.0
[INFO] [stderr]    Compiling lark-error v0.1.0
[INFO] [stderr]    Compiling lark-entity v0.1.0
[INFO] [stderr]    Compiling lark-ty v0.1.0
[INFO] [stderr]    Compiling lark-hir v0.1.0
[INFO] [stderr]    Compiling lark-parser v0.1.0
[INFO] [stderr]    Compiling lark-pretty-print v0.1.0
[INFO] [stderr]    Compiling lark-type-check v0.1.0
[INFO] [stderr]    Compiling lark-query-system v0.1.0
[INFO] [stderr]    Compiling lark-build v0.1.0
[INFO] [stderr]    Compiling lark-eval v0.1.0
[INFO] [stderr]    Compiling lark-cli v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> src/lib.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![feature(existential_type)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stderr]   |
[INFO] [stderr]   = note: removed in favor of `#![feature(type_alias_impl_trait)]`
[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] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "8b35e7d125c6271a4eaea319fd61e558713cd04b48715775e029700a5c9cf38c"`
[INFO] running `"docker" "rm" "-f" "8b35e7d125c6271a4eaea319fd61e558713cd04b48715775e029700a5c9cf38c"`
[INFO] [stdout] 8b35e7d125c6271a4eaea319fd61e558713cd04b48715775e029700a5c9cf38c