[INFO] cloning repository https://github.com/avranju/web-refresh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/avranju/web-refresh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favranju%2Fweb-refresh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favranju%2Fweb-refresh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7efd71fe484070a7d0e46119a460c0b5449a6b87
[INFO] checking avranju/web-refresh against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favranju%2Fweb-refresh" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/avranju/web-refresh on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/avranju/web-refresh
[INFO] finished tweaking git repo https://github.com/avranju/web-refresh
[INFO] tweaked toml for git repo https://github.com/avranju/web-refresh written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/avranju/web-refresh already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro-error-attr v0.4.8
[INFO] [stderr]   Downloaded proc-macro-error v0.4.8
[INFO] [stderr]   Downloaded stderrlog v0.2.4
[INFO] [stderr]   Downloaded webdriver_client v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bb4dab97170ea7e5256e8f2a12f4ab3676d2688ba275354e3adf2fd841e7f18
[INFO] running `Command { std: "docker" "start" "-a" "1bb4dab97170ea7e5256e8f2a12f4ab3676d2688ba275354e3adf2fd841e7f18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bb4dab97170ea7e5256e8f2a12f4ab3676d2688ba275354e3adf2fd841e7f18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bb4dab97170ea7e5256e8f2a12f4ab3676d2688ba275354e3adf2fd841e7f18", kill_on_drop: false }`
[INFO] [stdout] 1bb4dab97170ea7e5256e8f2a12f4ab3676d2688ba275354e3adf2fd841e7f18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b618544eac65f1d5e5ceca7bd85d7faf418490d9da0973b5f8cd53b0ad7e83b
[INFO] running `Command { std: "docker" "start" "-a" "2b618544eac65f1d5e5ceca7bd85d7faf418490d9da0973b5f8cd53b0ad7e83b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]    Compiling derive_builder_core v0.2.0
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking encode_unicode v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking stderrlog v0.2.4
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking signal-hook v0.1.13
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.46
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling proc-macro-error v0.4.8
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.8
[INFO] [stderr]    Compiling structopt-derive v0.4.2
[INFO] [stderr]     Checking structopt v0.3.9
[INFO] [stderr]     Checking webdriver_client v0.2.3
[INFO] [stderr]     Checking web-refresh v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.24s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "2b618544eac65f1d5e5ceca7bd85d7faf418490d9da0973b5f8cd53b0ad7e83b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b618544eac65f1d5e5ceca7bd85d7faf418490d9da0973b5f8cd53b0ad7e83b", kill_on_drop: false }`
[INFO] [stdout] 2b618544eac65f1d5e5ceca7bd85d7faf418490d9da0973b5f8cd53b0ad7e83b
[INFO] checking avranju/web-refresh against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favranju%2Fweb-refresh" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/avranju/web-refresh on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/avranju/web-refresh
[INFO] finished tweaking git repo https://github.com/avranju/web-refresh
[INFO] tweaked toml for git repo https://github.com/avranju/web-refresh written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/avranju/web-refresh already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d81a5dbcfec2a1720af95e3c0871da18b05da2222a20428e37cc00b3cca4bfda
[INFO] running `Command { std: "docker" "start" "-a" "d81a5dbcfec2a1720af95e3c0871da18b05da2222a20428e37cc00b3cca4bfda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d81a5dbcfec2a1720af95e3c0871da18b05da2222a20428e37cc00b3cca4bfda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d81a5dbcfec2a1720af95e3c0871da18b05da2222a20428e37cc00b3cca4bfda", kill_on_drop: false }`
[INFO] [stdout] d81a5dbcfec2a1720af95e3c0871da18b05da2222a20428e37cc00b3cca4bfda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eaa00976978aa0210a1f1398270fecd14c38ae1f12a669b511b81ed47d0e4b6a
[INFO] running `Command { std: "docker" "start" "-a" "eaa00976978aa0210a1f1398270fecd14c38ae1f12a669b511b81ed47d0e4b6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling derive_builder_core v0.2.0
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]     Checking encode_unicode v0.1.3
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking arc-swap v0.4.4
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking stderrlog v0.2.4
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustyline-1.0.0/src/tty/unix.rs:83:14
[INFO] [stdout]    |
[INFO] [stdout] 83 |         try!(Err(nix::Error::from_errno(ENOTTY)));
[INFO] [stdout]    |              ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]    |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]    |
[INFO] [stdout] 83 |         try!(Err::<T, nix::Error>(nix::Error::from_errno(ENOTTY)));
[INFO] [stdout]    |                 +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustyline` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/hyper-0.10.16/src/server/listener.rs:45:19
[INFO] [stdout]    |
[INFO] [stdout] 45 |     thread::spawn(move || {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]   --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]    |
[INFO] [stdout] 45 |     thread::spawn(move || -> /* Type */ {
[INFO] [stdout]    |                           +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hyper` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "eaa00976978aa0210a1f1398270fecd14c38ae1f12a669b511b81ed47d0e4b6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaa00976978aa0210a1f1398270fecd14c38ae1f12a669b511b81ed47d0e4b6a", kill_on_drop: false }`
[INFO] [stdout] eaa00976978aa0210a1f1398270fecd14c38ae1f12a669b511b81ed47d0e4b6a