[INFO] updating cached repository luser/rust-bindgen-webapp
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/luser/rust-bindgen-webapp
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/luser/rust-bindgen-webapp" "work/ex/beta-1.38-1/sources/1.37.0/gh/luser/rust-bindgen-webapp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/luser/rust-bindgen-webapp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/luser/rust-bindgen-webapp" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/luser/rust-bindgen-webapp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/luser/rust-bindgen-webapp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4620dc060166af0f952dd569069ac21498862e7a
[INFO] sha for GitHub repo luser/rust-bindgen-webapp: 4620dc060166af0f952dd569069ac21498862e7a
[INFO] validating manifest of luser/rust-bindgen-webapp 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 luser/rust-bindgen-webapp 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 luser/rust-bindgen-webapp
[INFO] finished frobbing luser/rust-bindgen-webapp
[INFO] frobbed toml for luser/rust-bindgen-webapp written to work/ex/beta-1.38-1/sources/1.37.0/gh/luser/rust-bindgen-webapp/Cargo.toml
[INFO] started frobbing luser/rust-bindgen-webapp
[INFO] finished frobbing luser/rust-bindgen-webapp
[INFO] frobbed toml for luser/rust-bindgen-webapp written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/luser/rust-bindgen-webapp/Cargo.toml
[INFO] crate luser/rust-bindgen-webapp 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing luser/rust-bindgen-webapp 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/luser/rust-bindgen-webapp:/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] d1c02873904051c0a78afc023d16e5c0824614c41c656d8f89721182e87f0c2c
[INFO] running `"docker" "start" "-a" "d1c02873904051c0a78afc023d16e5c0824614c41c656d8f89721182e87f0c2c"`
[INFO] [stderr]    Compiling scopeguard v0.3.2
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling libc v0.2.26
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling futures v0.1.14
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling gcc v0.3.51
[INFO] [stderr]    Compiling bitflags v0.8.2
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stderr]    Compiling libloading v0.4.0
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling yansi v0.3.0
[INFO] [stderr]    Compiling percent-encoding v1.0.0
[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/yansi-0.3.0/src/lib.rs:1:32
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![cfg_attr(feature="nightly", feature(const_fn))]
[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 `yansi`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d1c02873904051c0a78afc023d16e5c0824614c41c656d8f89721182e87f0c2c"`
[INFO] running `"docker" "rm" "-f" "d1c02873904051c0a78afc023d16e5c0824614c41c656d8f89721182e87f0c2c"`
[INFO] [stdout] d1c02873904051c0a78afc023d16e5c0824614c41c656d8f89721182e87f0c2c