[INFO] cloning repository https://github.com/dat2/routing-example
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dat2/routing-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdat2%2Frouting-example"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdat2%2Frouting-example'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cfda93efc91f7c4fe8f443f6f0f36a1f4ea65a97
[INFO] testing dat2/routing-example against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdat2%2Frouting-example" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dat2/routing-example 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/dat2/routing-example
[INFO] finished tweaking git repo https://github.com/dat2/routing-example
[INFO] tweaked toml for git repo https://github.com/dat2/routing-example written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/dat2/routing-example 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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 8d303a375832fd8a460eb9945adfc74a9847c11c0691e0fbf7c486891f44be93
[INFO] running `"docker" "start" "-a" "8d303a375832fd8a460eb9945adfc74a9847c11c0691e0fbf7c486891f44be93"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.32
[INFO] [stderr]    Compiling futures v0.1.16
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling cc v1.0.1
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling lazycell v0.5.1
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling slab v0.4.0
[INFO] [stderr]    Compiling scoped-tls v0.1.0
[INFO] [stderr]    Compiling take v0.1.0
[INFO] [stderr]    Compiling smallvec v0.2.1
[INFO] [stderr]    Compiling lazy_static v0.2.9
[INFO] [stderr]    Compiling httparse v1.2.3
[INFO] [stderr]    Compiling percent-encoding v1.0.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling unicase v2.0.0
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling mime v0.3.5
[INFO] [stderr]    Compiling iovec v0.1.1
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling num_cpus v1.7.0
[INFO] [stderr]    Compiling rand v0.3.17
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling bytes v0.4.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling mio v0.6.10
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling tokio-io v0.1.3
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling relay v0.1.0
[INFO] [stderr]    Compiling futures-cpupool v0.1.7
[INFO] [stderr]    Compiling tokio-core v0.1.10
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling hyper v0.11.6
[INFO] [stderr]    Compiling routing v0.1.1 (https://github.com/dat2/routing#25bfa317)
[INFO] [stderr]    Compiling backtrace v0.3.3
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling routing-derive v0.1.1 (https://github.com/dat2/routing#25bfa317)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/git/checkouts/routing-a8dd1f4a0aad6c03/25bfa31/routing-derive/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `routing-derive`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8d303a375832fd8a460eb9945adfc74a9847c11c0691e0fbf7c486891f44be93"`
[INFO] running `"docker" "rm" "-f" "8d303a375832fd8a460eb9945adfc74a9847c11c0691e0fbf7c486891f44be93"`
[INFO] [stdout] 8d303a375832fd8a460eb9945adfc74a9847c11c0691e0fbf7c486891f44be93