[INFO] updating cached repository miquels/webdav-handler-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/miquels/webdav-handler-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/miquels/webdav-handler-rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/miquels/webdav-handler-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/miquels/webdav-handler-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/miquels/webdav-handler-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/miquels/webdav-handler-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/miquels/webdav-handler-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fdf52e7db34e6b558efe3eeb3348d939c78e7a51
[INFO] sha for GitHub repo miquels/webdav-handler-rs: fdf52e7db34e6b558efe3eeb3348d939c78e7a51
[INFO] validating manifest of miquels/webdav-handler-rs on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of miquels/webdav-handler-rs on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing miquels/webdav-handler-rs
[INFO] finished frobbing miquels/webdav-handler-rs
[INFO] frobbed toml for miquels/webdav-handler-rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/miquels/webdav-handler-rs/Cargo.toml
[INFO] started frobbing miquels/webdav-handler-rs
[INFO] finished frobbing miquels/webdav-handler-rs
[INFO] frobbed toml for miquels/webdav-handler-rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/miquels/webdav-handler-rs/Cargo.toml
[INFO] crate miquels/webdav-handler-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing miquels/webdav-handler-rs against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/miquels/webdav-handler-rs:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 375079aafb2318f5114c170bd771925bd5173f7f8e7fe10f58abf830155676b1
[INFO] running `"docker" "start" "-a" "375079aafb2318f5114c170bd771925bd5173f7f8e7fe10f58abf830155676b1"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling htmlescape v0.3.1
[INFO] [stderr]    Compiling xmltree v0.8.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling lru v0.1.15
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling http v0.1.17
[INFO] [stderr]    Compiling headers-derive v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling tokio-threadpool v0.1.14
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling headers-core v0.1.0
[INFO] [stderr]    Compiling headers v0.2.1
[INFO] [stderr]    Compiling webdav-handler v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]    --> src/lib.rs:120:1
[INFO] [stderr]     |
[INFO] [stderr] 120 | #![feature(async_await, await_macro)]
[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 `webdav-handler`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "375079aafb2318f5114c170bd771925bd5173f7f8e7fe10f58abf830155676b1"`
[INFO] running `"docker" "rm" "-f" "375079aafb2318f5114c170bd771925bd5173f7f8e7fe10f58abf830155676b1"`
[INFO] [stdout] 375079aafb2318f5114c170bd771925bd5173f7f8e7fe10f58abf830155676b1