[INFO] updating cached repository https://github.com/shivshankar3578/hyper-rest-example
[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] 91904dbb96eac4bbc1b5e8c2b029702134a6f3e2
[INFO] testing shivshankar3578/hyper-rest-example against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshivshankar3578%2Fhyper-rest-example" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shivshankar3578/hyper-rest-example 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/shivshankar3578/hyper-rest-example
[INFO] finished tweaking git repo https://github.com/shivshankar3578/hyper-rest-example
[INFO] tweaked toml for git repo https://github.com/shivshankar3578/hyper-rest-example written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/shivshankar3578/hyper-rest-example 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-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=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] 6e0a0bef4823ec0e613d4f78bd33dbf884df73bd66caf76f0487a699754bb133
[INFO] running `"docker" "start" "-a" "6e0a0bef4823ec0e613d4f78bd33dbf884df73bd66caf76f0487a699754bb133"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling futures v0.1.21
[INFO] [stderr]    Compiling byteorder v1.2.2
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling slab v0.4.0
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling lazycell v0.6.0
[INFO] [stderr]    Compiling num-traits v0.2.2
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]    Compiling ucd-util v0.1.1
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling serde v1.0.37
[INFO] [stderr]    Compiling itoa v0.4.1
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling scoped-tls v0.1.1
[INFO] [stderr]    Compiling smallvec v0.4.4
[INFO] [stderr]    Compiling bitflags v1.0.1
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling uuid v0.5.1
[INFO] [stderr]    Compiling smallvec v0.2.1
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling sha1 v0.2.0
[INFO] [stderr]    Compiling take v0.1.0
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling quick-error v1.2.1
[INFO] [stderr]    Compiling literalext v0.1.1
[INFO] [stderr]    Compiling maud_htmlescape v0.17.0
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling termcolor v0.3.6
[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/literalext-0.1.1/src/lib.rs:19:37
[INFO] [stderr]    |
[INFO] [stderr] 19 | #![cfg_attr(feature = "proc-macro", feature(proc_macro))]
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling bufstream v0.1.3
[INFO] [stderr]    Compiling httparse v1.2.4
[INFO] [stderr]    Compiling proc-macro2 v0.3.6
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `literalext`.
[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" "6e0a0bef4823ec0e613d4f78bd33dbf884df73bd66caf76f0487a699754bb133"`
[INFO] running `"docker" "rm" "-f" "6e0a0bef4823ec0e613d4f78bd33dbf884df73bd66caf76f0487a699754bb133"`
[INFO] [stdout] 6e0a0bef4823ec0e613d4f78bd33dbf884df73bd66caf76f0487a699754bb133