[INFO] fetching crate emailx 0.1.0...
[INFO] testing emailx-0.1.0 against 1.54.0 for beta-1.55-1
[INFO] extracting crate emailx 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate emailx 0.1.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate emailx 0.1.0
[INFO] finished tweaking crates.io crate emailx 0.1.0
[INFO] tweaked toml for crates.io crate emailx 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7e7f2a8c77b8d85dd19754e148b1a5d25cb090d8ce52eae8302406e21b3bed9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f7e7f2a8c77b8d85dd19754e148b1a5d25cb090d8ce52eae8302406e21b3bed9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7e7f2a8c77b8d85dd19754e148b1a5d25cb090d8ce52eae8302406e21b3bed9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7e7f2a8c77b8d85dd19754e148b1a5d25cb090d8ce52eae8302406e21b3bed9", kill_on_drop: false }`
[INFO] [stdout] f7e7f2a8c77b8d85dd19754e148b1a5d25cb090d8ce52eae8302406e21b3bed9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 548942eba5ec6d10e8e8579745b43d6d29a03934ec4f787574c283b31c17942e
[INFO] running `Command { std: "docker" "start" "-a" "548942eba5ec6d10e8e8579745b43d6d29a03934ec4f787574c283b31c17942e", kill_on_drop: false }`
[INFO] [stderr]    Compiling nibble_vec v0.0.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling tokio-threadpool v0.1.18
[INFO] [stderr]    Compiling data-encoding-macro-internal v0.1.10
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling radix_trie v0.1.6
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling tokio-codec v0.1.2
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling data-encoding-macro v0.1.12
[INFO] [stderr]    Compiling trust-dns-proto v0.6.3
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling trust-dns v0.15.1
[INFO] [stderr]    Compiling emailx v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:22:37
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn validate(email: &str) -> Box<Future<Item = bool, Error = Error>> {
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future<Item = bool, Error = Error>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let (stream, sender) = UdpClientStream::new(address);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^   ----------------------------- this expression has type `UdpClientConnect`
[INFO] [stdout]    |         |
[INFO] [stdout]    |         expected struct `UdpClientConnect`, found tuple
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `UdpClientConnect`
[INFO] [stdout]                found tuple `(_, _)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: the method `from_err` exists for tuple `(ClientFuture<DnsMultiplexerConnect<_, _, Signer>, DnsMultiplexer<_, Signer>, DnsMultiplexerSerialResponse>, BasicClientHandle<DnsMultiplexerSerialResponse>)`, but its trait bounds were not satisfied
[INFO] [stdout]   --> src/lib.rs:45:10
[INFO] [stdout]    |
[INFO] [stdout] 45 |         .from_err()
[INFO] [stdout]    |          ^^^^^^^^ method cannot be called on `(ClientFuture<DnsMultiplexerConnect<_, _, Signer>, DnsMultiplexer<_, Signer>, DnsMultiplexerSerialResponse>, BasicClientHandle<DnsMultiplexerSerialResponse>)` due to unsatisfied trait bounds
[INFO] [stdout]    |
[INFO] [stdout]    = note: the following trait bounds were not satisfied:
[INFO] [stdout]            `(ClientFuture<DnsMultiplexerConnect<_, _, Signer>, DnsMultiplexer<_, Signer>, DnsMultiplexerSerialResponse>, BasicClientHandle<DnsMultiplexerSerialResponse>): futures::Future`
[INFO] [stdout]            which is required by `&mut (ClientFuture<DnsMultiplexerConnect<_, _, Signer>, DnsMultiplexer<_, Signer>, DnsMultiplexerSerialResponse>, BasicClientHandle<DnsMultiplexerSerialResponse>): futures::Future`
[INFO] [stdout]            `(ClientFuture<DnsMultiplexerConnect<_, _, Signer>, DnsMultiplexer<_, Signer>, DnsMultiplexerSerialResponse>, BasicClientHandle<DnsMultiplexerSerialResponse>): futures::Stream`
[INFO] [stdout]            which is required by `&mut (ClientFuture<DnsMultiplexerConnect<_, _, Signer>, DnsMultiplexer<_, Signer>, DnsMultiplexerSerialResponse>, BasicClientHandle<DnsMultiplexerSerialResponse>): futures::Stream`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `trust_dns::client::ClientHandle`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use trust_dns::client::ClientHandle;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `emailx`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "548942eba5ec6d10e8e8579745b43d6d29a03934ec4f787574c283b31c17942e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "548942eba5ec6d10e8e8579745b43d6d29a03934ec4f787574c283b31c17942e", kill_on_drop: false }`
[INFO] [stdout] 548942eba5ec6d10e8e8579745b43d6d29a03934ec4f787574c283b31c17942e
