[INFO] updating cached repository danneu/prox
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/danneu/prox
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/danneu/prox" "work/ex/beta-1.37-6/sources/1.36.0/gh/danneu/prox"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/danneu/prox'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/danneu/prox" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/danneu/prox"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/danneu/prox'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3e7d37205c594fcc0b8c4a5a0cdc7f51e718f772
[INFO] sha for GitHub repo danneu/prox: 3e7d37205c594fcc0b8c4a5a0cdc7f51e718f772
[INFO] validating manifest of danneu/prox 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 danneu/prox 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 danneu/prox
[INFO] finished frobbing danneu/prox
[INFO] frobbed toml for danneu/prox written to work/ex/beta-1.37-6/sources/1.36.0/gh/danneu/prox/Cargo.toml
[INFO] started frobbing danneu/prox
[INFO] finished frobbing danneu/prox
[INFO] frobbed toml for danneu/prox written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/danneu/prox/Cargo.toml
[INFO] crate danneu/prox 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 danneu/prox 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-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/danneu/prox:/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] 4a33b7e3c81a6dacbd826e1a64d98ce190935e47879a9a5b169f033dbdedbe91
[INFO] running `"docker" "start" "-a" "4a33b7e3c81a6dacbd826e1a64d98ce190935e47879a9a5b169f033dbdedbe91"`
[INFO] [stderr]    Compiling leak v0.1.2
[INFO] [stderr]    Compiling atty v0.2.8
[INFO] [stderr]    Compiling proc-macro2 v0.3.5
[INFO] [stderr]    Compiling base64 v0.9.0
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling bytes v0.4.6
[INFO] [stderr]    Compiling chrono v0.4.1
[INFO] [stderr]    Compiling env_logger v0.5.6
[INFO] [stderr]    Compiling tokio-io v0.1.6
[INFO] [stderr]    Compiling quote v0.5.1
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.1
[INFO] [stderr]    Compiling tokio-udp v0.1.0
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio v0.1.5
[INFO] [stderr]    Compiling tokio-core v0.1.16
[INFO] [stderr]    Compiling serde_derive_internals v0.23.0
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.37
[INFO] [stderr]    Compiling hyper v0.11.25
[INFO] [stderr]    Compiling prox v0.0.11 (/opt/crater/workdir)
[INFO] [stderr] error: expected `*` or `+`
[INFO] [stderr]   --> src/util.rs:24:26
[INFO] [stderr]    |
[INFO] [stderr] 24 |     ( $( $k:expr ),* $(,)? ) => {
[INFO] [stderr]    |                          ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `?` is not a macro repetition operator in the 2015 edition, but is accepted in the 2018 edition
[INFO] [stderr] 
[INFO] [stderr] error: expected `*` or `+`
[INFO] [stderr]   --> src/util.rs:34:37
[INFO] [stderr]    |
[INFO] [stderr] 34 |     ( $( ($k:expr, $v:expr) ),* $(,)? ) => {
[INFO] [stderr]    |                                     ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `?` is not a macro repetition operator in the 2015 edition, but is accepted in the 2018 edition
[INFO] [stderr] 
[INFO] [stderr] error: expected `*` or `+`
[INFO] [stderr]  --> src/mime/records.rs:8:62
[INFO] [stderr]   |
[INFO] [stderr] 8 |     ( $( ($ext:expr, $mime:expr, $compressible:expr) ),* $(,)? ) => {
[INFO] [stderr]   |                                                              ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `?` is not a macro repetition operator in the 2015 edition, but is accepted in the 2018 edition
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(macro_at_most_once_rep)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(option_filter)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(nll)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `prox`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4a33b7e3c81a6dacbd826e1a64d98ce190935e47879a9a5b169f033dbdedbe91"`
[INFO] running `"docker" "rm" "-f" "4a33b7e3c81a6dacbd826e1a64d98ce190935e47879a9a5b169f033dbdedbe91"`
[INFO] [stdout] 4a33b7e3c81a6dacbd826e1a64d98ce190935e47879a9a5b169f033dbdedbe91