[INFO] updating cached repository Max-Meldrum/kompact_template
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Max-Meldrum/kompact_template
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Max-Meldrum/kompact_template" "work/ex/beta-1.38-1/sources/1.37.0/gh/Max-Meldrum/kompact_template"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Max-Meldrum/kompact_template'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Max-Meldrum/kompact_template" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Max-Meldrum/kompact_template"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Max-Meldrum/kompact_template'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e17b6d2199e2e1f28e186f7c8fc31f32f23a5d5f
[INFO] sha for GitHub repo Max-Meldrum/kompact_template: e17b6d2199e2e1f28e186f7c8fc31f32f23a5d5f
[INFO] validating manifest of Max-Meldrum/kompact_template on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Max-Meldrum/kompact_template on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Max-Meldrum/kompact_template
[INFO] finished frobbing Max-Meldrum/kompact_template
[INFO] frobbed toml for Max-Meldrum/kompact_template written to work/ex/beta-1.38-1/sources/1.37.0/gh/Max-Meldrum/kompact_template/Cargo.toml
[INFO] started frobbing Max-Meldrum/kompact_template
[INFO] finished frobbing Max-Meldrum/kompact_template
[INFO] frobbed toml for Max-Meldrum/kompact_template written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Max-Meldrum/kompact_template/Cargo.toml
[INFO] crate Max-Meldrum/kompact_template already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Max-Meldrum/kompact_template against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Max-Meldrum/kompact_template:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 03b81738d88bec4e33cf9408a22ef1aac2fb88f3ebc7ce46d74387b08004fbbc
[INFO] running `"docker" "start" "-a" "03b81738d88bec4e33cf9408a22ef1aac2fb88f3ebc7ce46d74387b08004fbbc"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]    Compiling as_num v0.2.5
[INFO] [stderr]    Compiling oncemutex v0.1.1
[INFO] [stderr]    Compiling bitfields v0.2.0
[INFO] [stderr]    Compiling synchronoise v0.4.0
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling tokio-retry v0.2.0
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling kompact-actor-derive v0.6.0 (https://github.com/kompics/kompact#0d51a9ee)
[INFO] [stderr]    Compiling kompact-component-derive v0.6.0 (https://github.com/kompics/kompact#0d51a9ee)
[INFO] [stderr]    Compiling executors v0.4.4
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling tokio-fs v0.1.6
[INFO] [stderr]    Compiling spaniel v0.1.0
[INFO] [stderr]    Compiling slog-async v2.3.0
[INFO] [stderr]    Compiling slog-term v2.4.0
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.21
[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/crater/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/crater/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/crater/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" "03b81738d88bec4e33cf9408a22ef1aac2fb88f3ebc7ce46d74387b08004fbbc"`
[INFO] running `"docker" "rm" "-f" "03b81738d88bec4e33cf9408a22ef1aac2fb88f3ebc7ce46d74387b08004fbbc"`
[INFO] [stdout] 03b81738d88bec4e33cf9408a22ef1aac2fb88f3ebc7ce46d74387b08004fbbc