[INFO] updating cached repository https://github.com/Pzixel/issue54
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 42157efa3bcdcfc16e76b821a1fa095f902fc5b6
[INFO] testing Pzixel/issue54 against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FPzixel%2Fissue54" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Pzixel/issue54 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Pzixel/issue54
[INFO] finished tweaking git repo https://github.com/Pzixel/issue54
[INFO] tweaked toml for git repo https://github.com/Pzixel/issue54 written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Pzixel/issue54 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 9864fe4f326313384f29122c1063ec76edf856ddd264a6d62237c5a828652a79
[INFO] running `"docker" "start" "-a" "9864fe4f326313384f29122c1063ec76edf856ddd264a6d62237c5a828652a79"`
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling wee_alloc v0.4.1
[INFO] [stderr]    Compiling rustc-hex v1.0.0
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling memory_units v0.4.0
[INFO] [stderr]    Compiling rlibc v1.0.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]    Compiling serde_json v1.0.22
[INFO] [stderr]    Compiling pwasm-libc v0.2.0
[INFO] [stderr]    Compiling bigint v4.4.0
[INFO] [stderr]    Compiling parity-hash v1.2.0
[INFO] [stderr]    Compiling pwasm-abi v0.1.3
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wee_alloc-0.4.1/src/lib.rs:228:1
[INFO] [stderr]     |
[INFO] [stderr] 228 | #![feature(alloc, allocator_api, core_intrinsics)]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pwasm-abi-0.1.3/src/lib.rs:4:33
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![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 `wee_alloc`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `pwasm-abi`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "9864fe4f326313384f29122c1063ec76edf856ddd264a6d62237c5a828652a79"`
[INFO] running `"docker" "rm" "-f" "9864fe4f326313384f29122c1063ec76edf856ddd264a6d62237c5a828652a79"`
[INFO] [stdout] 9864fe4f326313384f29122c1063ec76edf856ddd264a6d62237c5a828652a79