[INFO] updating cached repository Champii/onet
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Champii/onet
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Champii/onet" "work/ex/beta-1.38-1/sources/1.37.0/gh/Champii/onet"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Champii/onet'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Champii/onet" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Champii/onet"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Champii/onet'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3e89a24fb434d1106d9b85bee0ef0d3071bc9c38
[INFO] sha for GitHub repo Champii/onet: 3e89a24fb434d1106d9b85bee0ef0d3071bc9c38
[INFO] validating manifest of Champii/onet 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 Champii/onet 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 Champii/onet
[INFO] finished frobbing Champii/onet
[INFO] frobbed toml for Champii/onet written to work/ex/beta-1.38-1/sources/1.37.0/gh/Champii/onet/Cargo.toml
[INFO] started frobbing Champii/onet
[INFO] finished frobbing Champii/onet
[INFO] frobbed toml for Champii/onet written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Champii/onet/Cargo.toml
[INFO] crate Champii/onet 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing Champii/onet 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/Champii/onet:/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] 4e9ee947c6d223a790071b1f0b6ab69c212eb23da402fbaeeb60917afe762498
[INFO] running `"docker" "start" "-a" "4e9ee947c6d223a790071b1f0b6ab69c212eb23da402fbaeeb60917afe762498"`
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.3
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling log v0.4.5
[INFO] [stderr]    Compiling ring v0.13.2
[INFO] [stderr]    Compiling humantime v1.1.1
[INFO] [stderr]    Compiling lock_api v0.1.4
[INFO] [stderr]    Compiling bytes v0.4.10
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/pin-utils-0.1.0-alpha.3/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(pin)]
[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 `pin-utils`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "4e9ee947c6d223a790071b1f0b6ab69c212eb23da402fbaeeb60917afe762498"`
[INFO] running `"docker" "rm" "-f" "4e9ee947c6d223a790071b1f0b6ab69c212eb23da402fbaeeb60917afe762498"`
[INFO] [stdout] 4e9ee947c6d223a790071b1f0b6ab69c212eb23da402fbaeeb60917afe762498