[INFO] crate tg_botapi 0.6.0-alpha.2 is already in cache
[INFO] extracting crate tg_botapi 0.6.0-alpha.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/tg_botapi/0.6.0-alpha.2
[INFO] extracting crate tg_botapi 0.6.0-alpha.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/tg_botapi/0.6.0-alpha.2
[INFO] validating manifest of tg_botapi-0.6.0-alpha.2 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 tg_botapi-0.6.0-alpha.2 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 tg_botapi-0.6.0-alpha.2
[INFO] finished frobbing tg_botapi-0.6.0-alpha.2
[INFO] frobbed toml for tg_botapi-0.6.0-alpha.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/tg_botapi/0.6.0-alpha.2/Cargo.toml
[INFO] started frobbing tg_botapi-0.6.0-alpha.2
[INFO] finished frobbing tg_botapi-0.6.0-alpha.2
[INFO] frobbed toml for tg_botapi-0.6.0-alpha.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/tg_botapi/0.6.0-alpha.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 tg_botapi-0.6.0-alpha.2 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-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/tg_botapi/0.6.0-alpha.2:/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] d50bbe38c99eeb2e6662c35d0add1935e1dc7434a7356baafbc10ed8534d395f
[INFO] running `"docker" "start" "-a" "d50bbe38c99eeb2e6662c35d0add1935e1dc7434a7356baafbc10ed8534d395f"`
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling futures-io-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling lru-cache v0.1.2
[INFO] [stderr]    Compiling socket2 v0.3.10
[INFO] [stderr]    Compiling hostname v0.1.5
[INFO] [stderr]    Compiling enum-as-inner v0.2.1
[INFO] [stderr]    Compiling resolv-conf v0.6.2
[INFO] [stderr]    Compiling futures-sink-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling futures-channel-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling futures-util-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling trust-dns-proto v0.7.4
[INFO] [stderr]    Compiling futures-executor-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling trust-dns-resolver v0.11.1
[INFO] [stderr]    Compiling futures-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling reqwest v0.9.19
[INFO] [stderr]    Compiling tg_botapi v0.6.0-alpha.2 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(async_await)]
[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 `tg_botapi`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d50bbe38c99eeb2e6662c35d0add1935e1dc7434a7356baafbc10ed8534d395f"`
[INFO] running `"docker" "rm" "-f" "d50bbe38c99eeb2e6662c35d0add1935e1dc7434a7356baafbc10ed8534d395f"`
[INFO] [stdout] d50bbe38c99eeb2e6662c35d0add1935e1dc7434a7356baafbc10ed8534d395f