[INFO] updating cached repository kchmck/p25rx
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kchmck/p25rx
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kchmck/p25rx" "work/ex/beta-1.37-6/sources/1.36.0/gh/kchmck/p25rx"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/kchmck/p25rx'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kchmck/p25rx" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kchmck/p25rx"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kchmck/p25rx'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bc961a49e41d3a3eccf06775152cdad81c70f0be
[INFO] sha for GitHub repo kchmck/p25rx: bc961a49e41d3a3eccf06775152cdad81c70f0be
[INFO] validating manifest of kchmck/p25rx on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kchmck/p25rx on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kchmck/p25rx
[INFO] finished frobbing kchmck/p25rx
[INFO] frobbed toml for kchmck/p25rx written to work/ex/beta-1.37-6/sources/1.36.0/gh/kchmck/p25rx/Cargo.toml
[INFO] started frobbing kchmck/p25rx
[INFO] finished frobbing kchmck/p25rx
[INFO] frobbed toml for kchmck/p25rx written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kchmck/p25rx/Cargo.toml
[INFO] crate kchmck/p25rx already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing kchmck/p25rx against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/kchmck/p25rx:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 1cbbfc6681f86d5b1574df4ce63b7b13f1f224fb824f37cab73d1a64b00cf439
[INFO] running `"docker" "start" "-a" "1cbbfc6681f86d5b1574df4ce63b7b13f1f224fb824f37cab73d1a64b00cf439"`
[INFO] [stderr]    Compiling uhttp_body_bytes v0.5.2
[INFO] [stderr]    Compiling collect_slice v1.2.0
[INFO] [stderr]    Compiling subslice_index v0.5.0
[INFO] [stderr]    Compiling uhttp_status v0.10.0
[INFO] [stderr]    Compiling uhttp_content_encoding v0.5.1
[INFO] [stderr]    Compiling uhttp_method v0.10.0
[INFO] [stderr]    Compiling uhttp_request_target v0.6.0
[INFO] [stderr]    Compiling uhttp_chunked_bytes v0.5.0
[INFO] [stderr]    Compiling uhttp_transfer_encoding v0.5.0
[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/uhttp_content_encoding-0.5.1/src/lib.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | #![feature(conservative_impl_trait)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]    Compiling slice_mip v1.0.0
[INFO] [stderr]    Compiling uhttp_version v0.6.0
[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 `uhttp_content_encoding`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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/uhttp_transfer_encoding-0.5.0/src/lib.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | #![feature(conservative_impl_trait)]
[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 `uhttp_transfer_encoding`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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/uhttp_version-0.6.0/src/lib.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | #![feature(field_init_shorthand)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[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/uhttp_version-0.6.0/src/lib.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | #![feature(static_in_const)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `uhttp_version`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "1cbbfc6681f86d5b1574df4ce63b7b13f1f224fb824f37cab73d1a64b00cf439"`
[INFO] running `"docker" "rm" "-f" "1cbbfc6681f86d5b1574df4ce63b7b13f1f224fb824f37cab73d1a64b00cf439"`
[INFO] [stdout] 1cbbfc6681f86d5b1574df4ce63b7b13f1f224fb824f37cab73d1a64b00cf439