[INFO] updating cached repository https://github.com/Max-Meldrum/kompact_template
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] e17b6d2199e2e1f28e186f7c8fc31f32f23a5d5f
[INFO] testing Max-Meldrum/kompact_template against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FMax-Meldrum%2Fkompact_template" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Max-Meldrum/kompact_template on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Max-Meldrum/kompact_template
[INFO] finished tweaking git repo https://github.com/Max-Meldrum/kompact_template
[INFO] tweaked toml for git repo https://github.com/Max-Meldrum/kompact_template written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Max-Meldrum/kompact_template already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 0d67400d1c32cf7b3b6e85fd4d72ee6131828c2158678a846bda4620936d6307
[INFO] running `"docker" "start" "-a" "0d67400d1c32cf7b3b6e85fd4d72ee6131828c2158678a846bda4620936d6307"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]    Compiling bitfields v0.2.0
[INFO] [stderr]    Compiling oncemutex v0.1.1
[INFO] [stderr]    Compiling as_num v0.2.5
[INFO] [stderr]    Compiling tokio-sync v0.1.5
[INFO] [stderr]    Compiling synchronoise v0.4.0
[INFO] [stderr]    Compiling tokio-executor v0.1.7
[INFO] [stderr]    Compiling crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling threadpool v1.7.1
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling tokio-threadpool v0.1.14
[INFO] [stderr]    Compiling tokio-timer v0.2.11
[INFO] [stderr]    Compiling tokio-current-thread v0.1.6
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling executors v0.4.4
[INFO] [stderr]    Compiling slog-async v2.3.0
[INFO] [stderr]    Compiling slog-term v2.4.0
[INFO] [stderr]    Compiling tokio-retry v0.2.0
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling spaniel v0.1.0
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.21
[INFO] [stderr]    Compiling kompact-component-derive v0.6.0 (https://github.com/kompics/kompact#0d51a9ee)
[INFO] [stderr]    Compiling kompact-actor-derive v0.6.0 (https://github.com/kompics/kompact#0d51a9ee)
[INFO] [stderr]    Compiling kompact v0.6.0 (https://github.com/kompics/kompact#0d51a9ee)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/git/checkouts/kompact-8e3803f644d2dc0c/0d51a9e/core/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(specialization)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/git/checkouts/kompact-8e3803f644d2dc0c/0d51a9e/core/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(unsized_locals)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/git/checkouts/kompact-8e3803f644d2dc0c/0d51a9e/core/src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(drain_filter)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `kompact`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0d67400d1c32cf7b3b6e85fd4d72ee6131828c2158678a846bda4620936d6307"`
[INFO] running `"docker" "rm" "-f" "0d67400d1c32cf7b3b6e85fd4d72ee6131828c2158678a846bda4620936d6307"`
[INFO] [stdout] 0d67400d1c32cf7b3b6e85fd4d72ee6131828c2158678a846bda4620936d6307