[INFO] updating cached repository Robbepop/non-pdsl-example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Robbepop/non-pdsl-example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Robbepop/non-pdsl-example" "work/ex/beta-1.38-1/sources/1.37.0/gh/Robbepop/non-pdsl-example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Robbepop/non-pdsl-example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Robbepop/non-pdsl-example" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Robbepop/non-pdsl-example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Robbepop/non-pdsl-example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 91dded334b5b0dd4064be6d402e7b5694c7cffe1
[INFO] sha for GitHub repo Robbepop/non-pdsl-example: 91dded334b5b0dd4064be6d402e7b5694c7cffe1
[INFO] validating manifest of Robbepop/non-pdsl-example 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 Robbepop/non-pdsl-example 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 Robbepop/non-pdsl-example
[INFO] finished frobbing Robbepop/non-pdsl-example
[INFO] frobbed toml for Robbepop/non-pdsl-example written to work/ex/beta-1.38-1/sources/1.37.0/gh/Robbepop/non-pdsl-example/Cargo.toml
[INFO] started frobbing Robbepop/non-pdsl-example
[INFO] finished frobbing Robbepop/non-pdsl-example
[INFO] frobbed toml for Robbepop/non-pdsl-example written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Robbepop/non-pdsl-example/Cargo.toml
[INFO] crate Robbepop/non-pdsl-example 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 Robbepop/non-pdsl-example 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/Robbepop/non-pdsl-example:/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] b5e037226eafe8f1ab99b78c81a8801373b25142b3a5df0e4deef4f66eb9294d
[INFO] running `"docker" "start" "-a" "b5e037226eafe8f1ab99b78c81a8801373b25142b3a5df0e4deef4f66eb9294d"`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling wee_alloc v0.4.3
[INFO] [stderr]    Compiling memory_units v0.4.0
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling syn v0.15.30
[INFO] [stderr]    Compiling proc-macro-crate v0.1.3
[INFO] [stderr]    Compiling parity-codec-derive v3.3.0
[INFO] [stderr]    Compiling parity-codec v3.4.0
[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/parity-codec-3.4.0/src/lib.rs:20:35
[INFO] [stderr]    |
[INFO] [stderr] 20 | #![cfg_attr(not(feature = "std"), feature(alloc))]
[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 `parity-codec`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b5e037226eafe8f1ab99b78c81a8801373b25142b3a5df0e4deef4f66eb9294d"`
[INFO] running `"docker" "rm" "-f" "b5e037226eafe8f1ab99b78c81a8801373b25142b3a5df0e4deef4f66eb9294d"`
[INFO] [stdout] b5e037226eafe8f1ab99b78c81a8801373b25142b3a5df0e4deef4f66eb9294d