[INFO] updating cached repository https://github.com/aep/carrier-custom-service-example
[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] fff6b241456bce218b01f8e0f99658ec3a174c09
[INFO] checking aep/carrier-custom-service-example against try#00e4530a79c42b21a6ca2ac1edb597c90d21f89f for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Faep%2Fcarrier-custom-service-example" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aep/carrier-custom-service-example on toolchain 00e4530a79c42b21a6ca2ac1edb597c90d21f89f
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/aep/carrier-custom-service-example
[INFO] finished tweaking git repo https://github.com/aep/carrier-custom-service-example
[INFO] tweaked toml for git repo https://github.com/aep/carrier-custom-service-example written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/aep/carrier-custom-service-example already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-0/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" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] feb368410fde8b3447910124b7c7592ebbda43b82389a8325dce8b47f2d0cfa1
[INFO] running `"docker" "start" "-a" "feb368410fde8b3447910124b7c7592ebbda43b82389a8325dce8b47f2d0cfa1"`
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling subtle v2.1.0
[INFO] [stderr]     Checking crc8 v0.1.1
[INFO] [stderr]     Checking gcmap v0.1.4
[INFO] [stderr]     Checking mtdparts v0.2.0
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling hacl-star-sys v0.0.7
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling getrandom v0.1.6
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]    Compiling snow v0.5.2
[INFO] [stderr]     Checking toml v0.5.1
[INFO] [stderr]    Compiling backtrace v0.3.33
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking pbr v1.0.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling osaka-macros v0.2.10
[INFO] [stderr]    Compiling serde_derive v1.0.97
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking tinylogger v0.1.1
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling curve25519-dalek v1.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]     Checking hpack v0.3.0
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]     Checking hacl-star v0.0.14
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling prost-derive v0.5.0
[INFO] [stderr]     Checking osaka v0.2.10
[INFO] [stderr]    Compiling prost-build v0.5.0
[INFO] [stderr]     Checking osaka-dns v0.2.10
[INFO] [stderr]     Checking axon v0.2.0
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.1
[INFO] [stderr]     Checking x25519-dalek v0.5.2
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling prost v0.5.0
[INFO] [stderr]    Compiling prost-types v0.5.0
[INFO] [stderr]    Compiling carrier v0.9.9
[INFO] [stderr]    Compiling carrier-custom-service-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0658]: extern types are experimental
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/carrier-0.9.9/src/channel.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     type Performance;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/43467
[INFO] [stderr]    = help: add `#![feature(extern_types)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: could not compile `carrier`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "feb368410fde8b3447910124b7c7592ebbda43b82389a8325dce8b47f2d0cfa1"`
[INFO] running `"docker" "rm" "-f" "feb368410fde8b3447910124b7c7592ebbda43b82389a8325dce8b47f2d0cfa1"`
[INFO] [stdout] feb368410fde8b3447910124b7c7592ebbda43b82389a8325dce8b47f2d0cfa1