[INFO] crate zmtp 0.6.0 is already in cache
[INFO] extracting crate zmtp 0.6.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/zmtp/0.6.0
[INFO] extracting crate zmtp 0.6.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zmtp/0.6.0
[INFO] validating manifest of zmtp-0.6.0 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 zmtp-0.6.0 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 zmtp-0.6.0
[INFO] finished frobbing zmtp-0.6.0
[INFO] frobbed toml for zmtp-0.6.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/zmtp/0.6.0/Cargo.toml
[INFO] started frobbing zmtp-0.6.0
[INFO] finished frobbing zmtp-0.6.0
[INFO] frobbed toml for zmtp-0.6.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zmtp/0.6.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing zmtp-0.6.0 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/reg/zmtp/0.6.0:/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] 60c45234e658685866cdfac21d35027e60c44e984c885221664213e18fd93511
[INFO] running `"docker" "start" "-a" "60c45234e658685866cdfac21d35027e60c44e984c885221664213e18fd93511"`
[INFO] [stderr]    Compiling zmtp v0.6.0 (/opt/crater/workdir)
[INFO] [stderr] warning: patterns aren't allowed in methods without bodies
[INFO] [stderr]   --> src/types.rs:36:24
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn peek(&mut self, mut buf: &mut [u8])  -> io::Result<usize>;
[INFO] [stderr]    |                        ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(patterns_in_fns_without_body)] on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #35203 <https://github.com/rust-lang/rust/issues/35203>
[INFO] [stderr] 
[INFO] [stderr] error[E0283]: type annotations required: cannot resolve `std::borrow::Cow<'_, str>: std::borrow::Borrow<_>`
[INFO] [stderr]    --> src/reader.rs:152:35
[INFO] [stderr]     |
[INFO] [stderr] 152 |             cmd.add_metadata(name.borrow(), val_bytes);
[INFO] [stderr]     |                                   ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ReadBytesExt`
[INFO] [stderr]  --> src/reader.rs:4:34
[INFO] [stderr]   |
[INFO] [stderr] 4 | use self::byteorder::{ByteOrder, ReadBytesExt, BigEndian};
[INFO] [stderr]   |                                  ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: Could not compile `zmtp`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "60c45234e658685866cdfac21d35027e60c44e984c885221664213e18fd93511"`
[INFO] running `"docker" "rm" "-f" "60c45234e658685866cdfac21d35027e60c44e984c885221664213e18fd93511"`
[INFO] [stdout] 60c45234e658685866cdfac21d35027e60c44e984c885221664213e18fd93511