[INFO] fetching crate http_tools 0.1.3...
[INFO] checking http_tools-0.1.3 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate http_tools 0.1.3 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate http_tools 0.1.3 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 crates.io crate http_tools 0.1.3
[INFO] finished tweaking crates.io crate http_tools 0.1.3
[INFO] tweaked toml for crates.io crate http_tools 0.1.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages
[INFO] [stderr]       Adding bytes v0.4.12 (latest: v1.6.0)
[INFO] [stderr]       Adding http v0.1.21 (latest: v1.1.0)
[INFO] [stderr]       Adding itoa v0.4.8 (latest: v1.0.11)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 9438f371a8ef0fa947bc09a8a067b4f2f03e7f8160deda0f0efb3a725c1e236d
[INFO] running `Command { std: "docker" "start" "-a" "9438f371a8ef0fa947bc09a8a067b4f2f03e7f8160deda0f0efb3a725c1e236d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9438f371a8ef0fa947bc09a8a067b4f2f03e7f8160deda0f0efb3a725c1e236d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9438f371a8ef0fa947bc09a8a067b4f2f03e7f8160deda0f0efb3a725c1e236d", kill_on_drop: false }`
[INFO] [stdout] 9438f371a8ef0fa947bc09a8a067b4f2f03e7f8160deda0f0efb3a725c1e236d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] e53423358d1186392aee1d4088699bba43b65bb8e8dd2a7e981d9126683b7a14
[INFO] running `Command { std: "docker" "start" "-a" "e53423358d1186392aee1d4088699bba43b65bb8e8dd2a7e981d9126683b7a14", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking http_tools v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.11s
[INFO] running `Command { std: "docker" "inspect" "e53423358d1186392aee1d4088699bba43b65bb8e8dd2a7e981d9126683b7a14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e53423358d1186392aee1d4088699bba43b65bb8e8dd2a7e981d9126683b7a14", kill_on_drop: false }`
[INFO] [stdout] e53423358d1186392aee1d4088699bba43b65bb8e8dd2a7e981d9126683b7a14
[INFO] checking http_tools-0.1.3 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate http_tools 0.1.3 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate http_tools 0.1.3 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 crates.io crate http_tools 0.1.3
[INFO] finished tweaking crates.io crate http_tools 0.1.3
[INFO] tweaked toml for crates.io crate http_tools 0.1.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c444830e5943e13e8f27f2029b5663f0cdfa67c8a5b753b54364ae8ad631f6eb
[INFO] running `Command { std: "docker" "start" "-a" "c444830e5943e13e8f27f2029b5663f0cdfa67c8a5b753b54364ae8ad631f6eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c444830e5943e13e8f27f2029b5663f0cdfa67c8a5b753b54364ae8ad631f6eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c444830e5943e13e8f27f2029b5663f0cdfa67c8a5b753b54364ae8ad631f6eb", kill_on_drop: false }`
[INFO] [stdout] c444830e5943e13e8f27f2029b5663f0cdfa67c8a5b753b54364ae8ad631f6eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 6d2d61ad3d9321af41c77f3260995b0023b3943cf8708a3ed385fa6155073a07
[INFO] running `Command { std: "docker" "start" "-a" "6d2d61ad3d9321af41c77f3260995b0023b3943cf8708a3ed385fa6155073a07", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 335 |           buf_get_impl!(self, 2, BigEndian::read_u16);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 356 |           buf_get_impl!(self, 2, LittleEndian::read_u16);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 385 |           buf_get_impl!(self, 2, BigEndian::read_i16);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 406 |           buf_get_impl!(self, 2, LittleEndian::read_i16);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 435 |           buf_get_impl!(self, 4, BigEndian::read_u32);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 456 |           buf_get_impl!(self, 4, LittleEndian::read_u32);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 485 |           buf_get_impl!(self, 4, BigEndian::read_i32);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 506 |           buf_get_impl!(self, 4, LittleEndian::read_i32);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 535 |           buf_get_impl!(self, 8, BigEndian::read_u64);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 556 |           buf_get_impl!(self, 8, LittleEndian::read_u64);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 585 |           buf_get_impl!(self, 8, BigEndian::read_i64);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 606 |           buf_get_impl!(self, 8, LittleEndian::read_i64);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 828 |           buf_get_impl!(self, 4, BigEndian::read_f32);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 850 |           buf_get_impl!(self, 4, LittleEndian::read_f32);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 880 |           buf_get_impl!(self, 8, BigEndian::read_f64);
[INFO] [stdout]     |           ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.12/src/buf/buf.rs:19:9
[INFO] [stdout]     |
[INFO] [stdout] 19  | /         if let Some(ret) = ret {
[INFO] [stdout] 20  | |              // if the direct convertion was possible, advance and return
[INFO] [stdout] 21  | |             $this.advance($size);
[INFO] [stdout] 22  | |             return ret;
[INFO] [stdout] ...   |
[INFO] [stdout] 27  | |             return $conv(&buf);
[INFO] [stdout] 28  | |         }
[INFO] [stdout]     | |_________^ cannot satisfy `_ -> _`
[INFO] [stdout] ...
[INFO] [stdout] 902 |           buf_get_impl!(self, 8, LittleEndian::read_f64);
[INFO] [stdout]     |           ---------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `buf_get_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 16 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bytes` (lib) due to 17 previous errors
[INFO] running `Command { std: "docker" "inspect" "6d2d61ad3d9321af41c77f3260995b0023b3943cf8708a3ed385fa6155073a07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d2d61ad3d9321af41c77f3260995b0023b3943cf8708a3ed385fa6155073a07", kill_on_drop: false }`
[INFO] [stdout] 6d2d61ad3d9321af41c77f3260995b0023b3943cf8708a3ed385fa6155073a07