[INFO] updating cached repository https://github.com/fangerm/gelixrs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c8e4d6545ddad168bad7a457b15dba5b25eee14e
[INFO] testing fangerm/gelixrs against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffangerm%2Fgelixrs" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fangerm/gelixrs on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/fangerm/gelixrs
[INFO] finished tweaking git repo https://github.com/fangerm/gelixrs
[INFO] tweaked toml for git repo https://github.com/fangerm/gelixrs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/fangerm/gelixrs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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" "+1.44.0" "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] 73f5e772f421cb36cbb636e36b71497d8b5b99434f53e15a02e6b887f29ef5bf
[INFO] running `"docker" "start" "-a" "73f5e772f421cb36cbb636e36b71497d8b5b99434f53e15a02e6b887f29ef5bf"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling inkwell v0.1.0 (https://github.com/TheDan64/inkwell?rev=136dd5e06db47f77cb329cd5f6625273dfd3afd7#136dd5e0)
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling enum-methods v0.0.8
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling llvm-sys v80.1.2
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling cargo_toml v0.6.4
[INFO] [stderr]    Compiling inkwell_internal_macros v0.1.0 (https://github.com/TheDan64/inkwell?rev=136dd5e06db47f77cb329cd5f6625273dfd3afd7#136dd5e0)
[INFO] [stderr]    Compiling gelixrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | #![feature(drain_filter)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/parser/parsing.rs:734:5
[INFO] [stderr]     |
[INFO] [stderr] 734 |     /// See the macro at the top of the file for info on how this works.
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macros
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `gelixrs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "73f5e772f421cb36cbb636e36b71497d8b5b99434f53e15a02e6b887f29ef5bf"`
[INFO] running `"docker" "rm" "-f" "73f5e772f421cb36cbb636e36b71497d8b5b99434f53e15a02e6b887f29ef5bf"`
[INFO] [stdout] 73f5e772f421cb36cbb636e36b71497d8b5b99434f53e15a02e6b887f29ef5bf