[INFO] updating cached repository https://github.com/rogday/tictactoe_server
[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] ff53e958505de461c2f1fb3bd0a76301494b4514
[INFO] testing rogday/tictactoe_server against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frogday%2Ftictactoe_server" "/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/rogday/tictactoe_server on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rogday/tictactoe_server
[INFO] finished tweaking git repo https://github.com/rogday/tictactoe_server
[INFO] tweaked toml for git repo https://github.com/rogday/tictactoe_server written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/rogday/tictactoe_server already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "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" "+beta-2020-06-03" "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] 53585dfd99dfcfe80ab6b79bdd43e666a3553029aba5796e47dcc3eed77dba0a
[INFO] running `"docker" "start" "-a" "53585dfd99dfcfe80ab6b79bdd43e666a3553029aba5796e47dcc3eed77dba0a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling futures-core v0.3.4
[INFO] [stderr]    Compiling futures-sink v0.3.4
[INFO] [stderr]    Compiling futures-io v0.3.4
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling futures-task v0.3.4
[INFO] [stderr]    Compiling pin-project-lite v0.1.4
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling once_cell v1.3.1
[INFO] [stderr]    Compiling staticvec v0.9.2
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling mio v0.6.21
[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/staticvec-0.9.2/src/lib.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | / #![feature(
[INFO] [stderr] 31 | |   const_compare_raw_pointers,
[INFO] [stderr] 32 | |   const_fn,
[INFO] [stderr] 33 | |   const_fn_union,
[INFO] [stderr] ...  |
[INFO] [stderr] 53 | |   untagged_unions
[INFO] [stderr] 54 | | )]
[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/staticvec-0.9.2/src/lib.rs:55:30
[INFO] [stderr]    |
[INFO] [stderr] 55 | #![cfg_attr(feature = "std", feature(read_initializer))]
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling futures-channel v0.3.4
[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 `staticvec`.
[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" "53585dfd99dfcfe80ab6b79bdd43e666a3553029aba5796e47dcc3eed77dba0a"`
[INFO] running `"docker" "rm" "-f" "53585dfd99dfcfe80ab6b79bdd43e666a3553029aba5796e47dcc3eed77dba0a"`
[INFO] [stdout] 53585dfd99dfcfe80ab6b79bdd43e666a3553029aba5796e47dcc3eed77dba0a