[INFO] updating cached repository SunDoge/smms
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/SunDoge/smms
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/SunDoge/smms" "work/ex/beta-1.38-1/sources/1.37.0/gh/SunDoge/smms"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/SunDoge/smms'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/SunDoge/smms" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SunDoge/smms"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SunDoge/smms'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c6d0c8b968b9f3cf311e083d976a83a597dca993
[INFO] sha for GitHub repo SunDoge/smms: c6d0c8b968b9f3cf311e083d976a83a597dca993
[INFO] validating manifest of SunDoge/smms 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 SunDoge/smms 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 SunDoge/smms
[INFO] finished frobbing SunDoge/smms
[INFO] frobbed toml for SunDoge/smms written to work/ex/beta-1.38-1/sources/1.37.0/gh/SunDoge/smms/Cargo.toml
[INFO] started frobbing SunDoge/smms
[INFO] finished frobbing SunDoge/smms
[INFO] frobbed toml for SunDoge/smms written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SunDoge/smms/Cargo.toml
[INFO] crate SunDoge/smms 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 SunDoge/smms 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/SunDoge/smms:/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] d95627d9d31022cfa31aa3603d8fd287de0825f83b825cd638a73bcdb3e1f081
[INFO] running `"docker" "start" "-a" "d95627d9d31022cfa31aa3603d8fd287de0825f83b825cd638a73bcdb3e1f081"`
[INFO] [stderr]    Compiling futures v0.1.25
[INFO] [stderr]    Compiling encoding_rs v0.8.10
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling http v0.1.13
[INFO] [stderr]    Compiling serde_json v1.0.32
[INFO] [stderr]    Compiling mime v0.3.12
[INFO] [stderr]    Compiling openssl v0.10.15
[INFO] [stderr]    Compiling syn v0.15.14
[INFO] [stderr]    Compiling libflate v0.1.18
[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/futures-0.1.25/src/lib.rs:161:34
[INFO] [stderr]     |
[INFO] [stderr] 161 | #![cfg_attr(feature = "nightly", feature(pin))]
[INFO] [stderr]     |                                  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling serde_urlencoded v0.5.3
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[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 `futures`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d95627d9d31022cfa31aa3603d8fd287de0825f83b825cd638a73bcdb3e1f081"`
[INFO] running `"docker" "rm" "-f" "d95627d9d31022cfa31aa3603d8fd287de0825f83b825cd638a73bcdb3e1f081"`
[INFO] [stdout] d95627d9d31022cfa31aa3603d8fd287de0825f83b825cd638a73bcdb3e1f081