[INFO] fetching crate howto 0.3.1...
[INFO] checking howto-0.3.1 against try#5e633973aa9255a88b65a39484627bb54e6044b3 for pr-66063
[INFO] extracting crate howto 0.3.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate howto 0.3.1 on toolchain 5e633973aa9255a88b65a39484627bb54e6044b3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate howto 0.3.1
[INFO] finished tweaking crates.io crate howto 0.3.1
[INFO] tweaked toml for crates.io crate howto 0.3.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+5e633973aa9255a88b65a39484627bb54e6044b3" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2753331e6dbe06167f2f69bd1be53075ff487f48bf15666f55e0752b113bea7c
[INFO] running `"docker" "start" "-a" "2753331e6dbe06167f2f69bd1be53075ff487f48bf15666f55e0752b113bea7c"`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling curl v0.4.25
[INFO] [stderr]    Compiling isahc v0.7.5
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.2
[INFO] [stderr]    Compiling curl-sys v0.4.23
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]    Compiling markup5ever v0.7.5
[INFO] [stderr]     Checking sluice v0.4.2
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking selectors v0.21.0
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking html5ever v0.22.5
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking scraper v0.10.1
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking surf v1.0.2
[INFO] [stderr] error[E0277]: the trait bound `std::io::Empty: futures_io::if_std::AsyncRead` is not satisfied
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/surf-1.0.2/src/http_client/mod.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 64 |             reader: Box::new(std::io::empty()),
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `futures_io::if_std::AsyncRead` is not implemented for `std::io::Empty`
[INFO] [stderr]    |
[INFO] [stderr]    = note: required for the cast to the object type `dyn futures_io::if_std::AsyncRead + std::marker::Send + std::marker::Unpin`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `surf`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2753331e6dbe06167f2f69bd1be53075ff487f48bf15666f55e0752b113bea7c"`
[INFO] running `"docker" "rm" "-f" "2753331e6dbe06167f2f69bd1be53075ff487f48bf15666f55e0752b113bea7c"`
[INFO] [stdout] 2753331e6dbe06167f2f69bd1be53075ff487f48bf15666f55e0752b113bea7c