[INFO] updating cached repository https://github.com/chrisdickinson/blog-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2d1dc6c6db542c1dc8a008c4826891a861ac3c2f
[INFO] checking chrisdickinson/blog-rs against try#b19afc12c4f781e95f168f2fdea339c972f14ae2 for pr-64327
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisdickinson%2Fblog-rs" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chrisdickinson/blog-rs on toolchain b19afc12c4f781e95f168f2fdea339c972f14ae2-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/chrisdickinson/blog-rs
[INFO] finished tweaking git repo https://github.com/chrisdickinson/blog-rs
[INFO] tweaked toml for git repo https://github.com/chrisdickinson/blog-rs written to work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/chrisdickinson/blog-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 37b8dcdaf901fdf1a41186e4822ed7e3ec2e6481bff92272a6600814da224637
[INFO] running `"docker" "start" "-a" "37b8dcdaf901fdf1a41186e4822ed7e3ec2e6481bff92272a6600814da224637"`
[INFO] [stderr]    Compiling syn v0.15.31
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]     Checking hyper v0.12.27
[INFO] [stderr]     Checking multipart v0.15.4
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.5
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]    Compiling futures-select-macro-preview v0.3.0-alpha.14
[INFO] [stderr]     Checking dotenv v0.13.0
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.14
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-util-preview-0.3.0-alpha.14/src/lib.rs:6:51
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![cfg_attr(feature = "std", feature(async_await, await_macro))]
[INFO] [stderr]   |                                                   ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: subsumed by `.await` syntax
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-util-preview-0.3.0-alpha.14/src/lib.rs:6:51
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![cfg_attr(feature = "std", feature(async_await, await_macro))]
[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 E0557`.
[INFO] [stderr] error: Could not compile `futures-util-preview`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "37b8dcdaf901fdf1a41186e4822ed7e3ec2e6481bff92272a6600814da224637"`
[INFO] running `"docker" "rm" "-f" "37b8dcdaf901fdf1a41186e4822ed7e3ec2e6481bff92272a6600814da224637"`
[INFO] [stdout] 37b8dcdaf901fdf1a41186e4822ed7e3ec2e6481bff92272a6600814da224637