[INFO] updating cached repository vishusandy/blogr
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/vishusandy/blogr
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/vishusandy/blogr" "work/ex/beta-1.38-1/sources/1.37.0/gh/vishusandy/blogr"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/vishusandy/blogr'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/vishusandy/blogr" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/vishusandy/blogr"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/vishusandy/blogr'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7258f90a1854f8d026bf3f964987eda127d5fab8
[INFO] sha for GitHub repo vishusandy/blogr: 7258f90a1854f8d026bf3f964987eda127d5fab8
[INFO] validating manifest of vishusandy/blogr 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 vishusandy/blogr 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 vishusandy/blogr
[INFO] finished frobbing vishusandy/blogr
[INFO] frobbed toml for vishusandy/blogr written to work/ex/beta-1.38-1/sources/1.37.0/gh/vishusandy/blogr/Cargo.toml
[INFO] started frobbing vishusandy/blogr
[INFO] finished frobbing vishusandy/blogr
[INFO] frobbed toml for vishusandy/blogr written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/vishusandy/blogr/Cargo.toml
[INFO] crate vishusandy/blogr 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 vishusandy/blogr 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-5/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/vishusandy/blogr:/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] 10c4f0d612f9b5843232cc4afd5d9961abc6a92aefd2807a85e9e1c44da8221e
[INFO] running `"docker" "start" "-a" "10c4f0d612f9b5843232cc4afd5d9961abc6a92aefd2807a85e9e1c44da8221e"`
[INFO] [stderr]    Compiling unic-char-range v0.6.0
[INFO] [stderr]    Compiling unic-ucd-core v0.6.0
[INFO] [stderr]    Compiling fallible-iterator v0.1.5
[INFO] [stderr]    Compiling pear v0.0.19
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]    Compiling owning_ref v0.2.4
[INFO] [stderr]    Compiling pulldown-cmark v0.0.11
[INFO] [stderr]    Compiling alloc-no-stdlib v1.2.0
[INFO] [stderr]    Compiling pest v0.3.3
[INFO] [stderr]    Compiling unchecked-index v0.2.2
[INFO] [stderr]    Compiling pipeline v0.5.0
[INFO] [stderr]    Compiling entities v1.0.1
[INFO] [stderr]    Compiling unicode_categories v0.1.1
[INFO] [stderr]    Compiling adler32 v0.2.0
[INFO] [stderr]    Compiling evmap v2.0.2
[INFO] [stderr]    Compiling urlencoding v1.0.0
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling encoding_rs v0.7.2
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling isatty v0.1.8
[INFO] [stderr]    Compiling socket2 v0.3.7
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling pear_codegen v0.0.19
[INFO] [stderr]    Compiling rocket v0.3.15
[INFO] [stderr]    Compiling rocket_codegen v0.3.15
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]    Compiling base64 v0.9.2
[INFO] [stderr]    Compiling unic-utils v0.6.0
[INFO] [stderr]    Compiling brotli-decompressor v1.2.1
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling bytes v0.4.9
[INFO] [stderr]    Compiling twoway v0.1.8
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling stringprep v0.1.2
[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/twoway-0.1.8/src/lib.rs:3:31
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![cfg_attr(feature = "pcmp", feature(asm))]
[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 `twoway`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "10c4f0d612f9b5843232cc4afd5d9961abc6a92aefd2807a85e9e1c44da8221e"`
[INFO] running `"docker" "rm" "-f" "10c4f0d612f9b5843232cc4afd5d9961abc6a92aefd2807a85e9e1c44da8221e"`
[INFO] [stdout] 10c4f0d612f9b5843232cc4afd5d9961abc6a92aefd2807a85e9e1c44da8221e