[INFO] updating cached repository volution/vonuvoli-scheme
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/volution/vonuvoli-scheme
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/volution/vonuvoli-scheme" "work/ex/beta-1.38-1/sources/1.37.0/gh/volution/vonuvoli-scheme"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/volution/vonuvoli-scheme'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/volution/vonuvoli-scheme" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/volution/vonuvoli-scheme"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/volution/vonuvoli-scheme'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f9bb156bd3bc6d1e56153bf96200543a5dedd334
[INFO] sha for GitHub repo volution/vonuvoli-scheme: f9bb156bd3bc6d1e56153bf96200543a5dedd334
[INFO] validating manifest of volution/vonuvoli-scheme 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 volution/vonuvoli-scheme 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 volution/vonuvoli-scheme
[INFO] finished frobbing volution/vonuvoli-scheme
[INFO] frobbed toml for volution/vonuvoli-scheme written to work/ex/beta-1.38-1/sources/1.37.0/gh/volution/vonuvoli-scheme/Cargo.toml
[INFO] started frobbing volution/vonuvoli-scheme
[INFO] finished frobbing volution/vonuvoli-scheme
[INFO] frobbed toml for volution/vonuvoli-scheme written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/volution/vonuvoli-scheme/Cargo.toml
[INFO] crate volution/vonuvoli-scheme 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 volution/vonuvoli-scheme 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/volution/vonuvoli-scheme:/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] d2e9b8bbce3fb879cdfb22d4b64c2de637a291e3b032f06b00807ca40e4b7212
[INFO] running `"docker" "start" "-a" "d2e9b8bbce3fb879cdfb22d4b64c2de637a291e3b032f06b00807ca40e4b7212"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling lazy_static v1.0.1
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.69
[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/lazy_static-1.0.1/src/lib.rs:104:32
[INFO] [stderr]     |
[INFO] [stderr] 104 | #![cfg_attr(feature="nightly", feature(unreachable))]
[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 `lazy_static`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d2e9b8bbce3fb879cdfb22d4b64c2de637a291e3b032f06b00807ca40e4b7212"`
[INFO] running `"docker" "rm" "-f" "d2e9b8bbce3fb879cdfb22d4b64c2de637a291e3b032f06b00807ca40e4b7212"`
[INFO] [stdout] d2e9b8bbce3fb879cdfb22d4b64c2de637a291e3b032f06b00807ca40e4b7212