[INFO] crate fungi-lang 0.1.63 is already in cache
[INFO] checking fungi-lang-0.1.63 against try#5e633973aa9255a88b65a39484627bb54e6044b3 for pr-66063
[INFO] extracting crate fungi-lang 0.1.63 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate fungi-lang 0.1.63 on toolchain 5e633973aa9255a88b65a39484627bb54e6044b3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate fungi-lang 0.1.63
[INFO] finished tweaking crates.io crate fungi-lang 0.1.63
[INFO] tweaked toml for crates.io crate fungi-lang 0.1.63 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=allow" "-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" "+5e633973aa9255a88b65a39484627bb54e6044b3" "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] 4611eef70490055e8d105628a507b917110f238a5a38c162fbee8125a8e409f3
[INFO] running `"docker" "start" "-a" "4611eef70490055e8d105628a507b917110f238a5a38c162fbee8125a8e409f3"`
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]     Checking adapton v0.3.30
[INFO] [stderr]     Checking proc-macro2 v0.3.8
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/adapton-0.3.30/src/lib.rs:1399:1
[INFO] [stderr]      |
[INFO] [stderr] 1399 | #![feature(box_patterns)]
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/adapton-0.3.30/src/lib.rs:1400:1
[INFO] [stderr]      |
[INFO] [stderr] 1400 | #![feature(box_syntax)]
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `adapton`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "4611eef70490055e8d105628a507b917110f238a5a38c162fbee8125a8e409f3"`
[INFO] running `"docker" "rm" "-f" "4611eef70490055e8d105628a507b917110f238a5a38c162fbee8125a8e409f3"`
[INFO] [stdout] 4611eef70490055e8d105628a507b917110f238a5a38c162fbee8125a8e409f3