[INFO] crate mqtt 0.1.4 is already in cache
[INFO] extracting crate mqtt 0.1.4 into work/ex/beta-1.38-1/sources/1.37.0/reg/mqtt/0.1.4
[INFO] extracting crate mqtt 0.1.4 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mqtt/0.1.4
[INFO] validating manifest of mqtt-0.1.4 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 mqtt-0.1.4 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 mqtt-0.1.4
[INFO] removed 0 missing examples
[INFO] finished frobbing mqtt-0.1.4
[INFO] frobbed toml for mqtt-0.1.4 written to work/ex/beta-1.38-1/sources/1.37.0/reg/mqtt/0.1.4/Cargo.toml
[INFO] started frobbing mqtt-0.1.4
[INFO] removed 0 missing examples
[INFO] finished frobbing mqtt-0.1.4
[INFO] frobbed toml for mqtt-0.1.4 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mqtt/0.1.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 mqtt-0.1.4 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mqtt/0.1.4:/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] 5de78e0240390a772ce2822fd7bfd0b11b6356cede10ee401e768bb1694aac2d
[INFO] running `"docker" "start" "-a" "5de78e0240390a772ce2822fd7bfd0b11b6356cede10ee401e768bb1694aac2d"`
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling miow v0.1.5
[INFO] [stderr]    Compiling mio v0.5.1
[INFO] [stderr]    Compiling rotor v0.6.3
[INFO] [stderr]    Compiling mqtt v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  | / error_chain!{
[INFO] [stderr] 4  | |     foreign_links {
[INFO] [stderr] 5  | |         Fmt(::std::fmt::Error);
[INFO] [stderr] 6  | |         Io(::std::io::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 15 | |     }
[INFO] [stderr] 16 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  | / error_chain!{
[INFO] [stderr] 4  | |     foreign_links {
[INFO] [stderr] 5  | |         Fmt(::std::fmt::Error);
[INFO] [stderr] 6  | |         Io(::std::io::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 15 | |     }
[INFO] [stderr] 16 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `keep_alive`
[INFO] [stderr]    --> src/client.rs:294:5
[INFO] [stderr]     |
[INFO] [stderr] 294 |     keep_alive: Duration,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.35s
[INFO] running `"docker" "inspect" "5de78e0240390a772ce2822fd7bfd0b11b6356cede10ee401e768bb1694aac2d"`
[INFO] running `"docker" "rm" "-f" "5de78e0240390a772ce2822fd7bfd0b11b6356cede10ee401e768bb1694aac2d"`
[INFO] [stdout] 5de78e0240390a772ce2822fd7bfd0b11b6356cede10ee401e768bb1694aac2d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/mqtt/0.1.4:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 10946160420b964fc9d19f27b80f5ca7d35935006b1b282a60a11ec93386e5fa
[INFO] running `"docker" "start" "-a" "10946160420b964fc9d19f27b80f5ca7d35935006b1b282a60a11ec93386e5fa"`
[INFO] [stderr]    Compiling mqtt v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `echo_client`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `examples/echo_client.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: Could not compile `mqtt`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0432]: unresolved imports `bytes::ByteBuf`, `bytes::SliceBuf`
[INFO] [stderr]   --> examples/echo_server.rs:27:26
[INFO] [stderr]    |
[INFO] [stderr] 27 | use bytes::{Buf, BufMut, ByteBuf, SliceBuf};
[INFO] [stderr]    |                          ^^^^^^^  ^^^^^^^^ no `SliceBuf` in the root
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          no `ByteBuf` in the root
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Event::kind': use Event::readiness()
[INFO] [stderr]    --> examples/echo_server.rs:123:62
[INFO] [stderr]     |
[INFO] [stderr] 123 |                                 entry.get_mut().handle(event.kind(), poll)?;
[INFO] [stderr]     |                                                              ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Ready::is_hup': use UnixReady instead
[INFO] [stderr]    --> examples/echo_server.rs:308:24
[INFO] [stderr]     |
[INFO] [stderr] 308 |             _ if ready.is_hup() => {
[INFO] [stderr]     |                        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Ready::none': use Ready::empty instead
[INFO] [stderr]    --> examples/echo_server.rs:378:32
[INFO] [stderr]     |
[INFO] [stderr] 378 |                           _ => Ready::none(),
[INFO] [stderr]     |                                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> examples/echo_server.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | /     error_chain!{
[INFO] [stderr] 35 | |         types {
[INFO] [stderr] 36 | |             Error, ErrorKind, ResultExt, Result;
[INFO] [stderr] 37 | |         }
[INFO] [stderr] ...  |
[INFO] [stderr] 50 | |         }
[INFO] [stderr] 51 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Buf`
[INFO] [stderr]   --> examples/echo_server.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 | use bytes::{Buf, BufMut, ByteBuf, SliceBuf};
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufMut`
[INFO] [stderr]   --> examples/echo_server.rs:27:18
[INFO] [stderr]    |
[INFO] [stderr] 27 | use bytes::{Buf, BufMut, ByteBuf, SliceBuf};
[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 E0432`.
[INFO] [stderr] error: Could not compile `mqtt`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  | / error_chain!{
[INFO] [stderr] 4  | |     foreign_links {
[INFO] [stderr] 5  | |         Fmt(::std::fmt::Error);
[INFO] [stderr] 6  | |         Io(::std::io::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 15 | |     }
[INFO] [stderr] 16 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:3:1
[INFO] [stderr]    |
[INFO] [stderr] 3  | / error_chain!{
[INFO] [stderr] 4  | |     foreign_links {
[INFO] [stderr] 5  | |         Fmt(::std::fmt::Error);
[INFO] [stderr] 6  | |         Io(::std::io::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 15 | |     }
[INFO] [stderr] 16 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `keep_alive`
[INFO] [stderr]    --> src/client.rs:294:5
[INFO] [stderr]     |
[INFO] [stderr] 294 |     keep_alive: Duration,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "10946160420b964fc9d19f27b80f5ca7d35935006b1b282a60a11ec93386e5fa"`
[INFO] running `"docker" "rm" "-f" "10946160420b964fc9d19f27b80f5ca7d35935006b1b282a60a11ec93386e5fa"`
[INFO] [stdout] 10946160420b964fc9d19f27b80f5ca7d35935006b1b282a60a11ec93386e5fa