[INFO] updating cached repository childhooooo/cartta
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/childhooooo/cartta
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/childhooooo/cartta" "work/ex/beta-1.38-1/sources/1.37.0/gh/childhooooo/cartta"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/childhooooo/cartta'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/childhooooo/cartta" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/childhooooo/cartta"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/childhooooo/cartta'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8392c0811bf70ae650dfbbfd6a5bce4fcb0e14c2
[INFO] sha for GitHub repo childhooooo/cartta: 8392c0811bf70ae650dfbbfd6a5bce4fcb0e14c2
[INFO] validating manifest of childhooooo/cartta 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 childhooooo/cartta 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 childhooooo/cartta
[INFO] finished frobbing childhooooo/cartta
[INFO] frobbed toml for childhooooo/cartta written to work/ex/beta-1.38-1/sources/1.37.0/gh/childhooooo/cartta/Cargo.toml
[INFO] started frobbing childhooooo/cartta
[INFO] finished frobbing childhooooo/cartta
[INFO] frobbed toml for childhooooo/cartta written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/childhooooo/cartta/Cargo.toml
[INFO] crate childhooooo/cartta 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 childhooooo/cartta against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/childhooooo/cartta:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] cea3e8deb9043ff0b114a840ba84c8cc469ea7bc6de7ef30a10addd4b0188664
[INFO] running `"docker" "start" "-a" "cea3e8deb9043ff0b114a840ba84c8cc469ea7bc6de7ef30a10addd4b0188664"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling utf-8 v0.7.4
[INFO] [stderr]    Compiling pulldown-cmark v0.0.11
[INFO] [stderr]    Compiling htmlstream v0.1.3
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling pear_codegen v0.1.0
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling pest v2.0.2
[INFO] [stderr]    Compiling rocket_contrib_codegen v0.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.2
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling lock_api v0.1.4
[INFO] [stderr]    Compiling xss v0.1.0 (https://github.com/childhooooo/xss.rs.git#d229e57c)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.1.4/src/lib.rs:88:34
[INFO] [stderr]    |
[INFO] [stderr] 88 | #![cfg_attr(feature = "nightly", feature(const_fn))]
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[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 `lock_api`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "cea3e8deb9043ff0b114a840ba84c8cc469ea7bc6de7ef30a10addd4b0188664"`
[INFO] running `"docker" "rm" "-f" "cea3e8deb9043ff0b114a840ba84c8cc469ea7bc6de7ef30a10addd4b0188664"`
[INFO] [stdout] cea3e8deb9043ff0b114a840ba84c8cc469ea7bc6de7ef30a10addd4b0188664