[INFO] updating cached repository swissChili/kiln
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/swissChili/kiln
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/swissChili/kiln" "work/ex/beta-1.38-1/sources/1.37.0/gh/swissChili/kiln"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/swissChili/kiln'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/swissChili/kiln" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/swissChili/kiln"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/swissChili/kiln'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 42f7c123827b5158e1c53f69a1dc3506dabf2f42
[INFO] sha for GitHub repo swissChili/kiln: 42f7c123827b5158e1c53f69a1dc3506dabf2f42
[INFO] validating manifest of swissChili/kiln 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 swissChili/kiln 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 swissChili/kiln
[INFO] finished frobbing swissChili/kiln
[INFO] frobbed toml for swissChili/kiln written to work/ex/beta-1.38-1/sources/1.37.0/gh/swissChili/kiln/Cargo.toml
[INFO] started frobbing swissChili/kiln
[INFO] finished frobbing swissChili/kiln
[INFO] frobbed toml for swissChili/kiln written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/swissChili/kiln/Cargo.toml
[INFO] crate swissChili/kiln 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/swissChili/kiln/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 swissChili/kiln against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/swissChili/kiln:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] a11586d350ccf5ea2b6f139faa18da90f93c190cb6b8553ca7f17ecfffa8d3bc
[INFO] running `"docker" "start" "-a" "a11586d350ccf5ea2b6f139faa18da90f93c190cb6b8553ca7f17ecfffa8d3bc"`
[INFO] [stderr]    Compiling kiln v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(uniform_paths)]
[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 `kiln`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a11586d350ccf5ea2b6f139faa18da90f93c190cb6b8553ca7f17ecfffa8d3bc"`
[INFO] running `"docker" "rm" "-f" "a11586d350ccf5ea2b6f139faa18da90f93c190cb6b8553ca7f17ecfffa8d3bc"`
[INFO] [stdout] a11586d350ccf5ea2b6f139faa18da90f93c190cb6b8553ca7f17ecfffa8d3bc