[INFO] cloning repository https://github.com/pie-flavor/romeo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pie-flavor/romeo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpie-flavor%2Fromeo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpie-flavor%2Fromeo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3766ceec1360ed3365e3d836d26c23b564c73571
[INFO] testing pie-flavor/romeo against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpie-flavor%2Fromeo" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pie-flavor/romeo on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pie-flavor/romeo
[INFO] finished tweaking git repo https://github.com/pie-flavor/romeo
[INFO] tweaked toml for git repo https://github.com/pie-flavor/romeo written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/pie-flavor/romeo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.30
[INFO] [stderr]   Downloaded clippy_lints v0.0.212
[INFO] [stderr]   Downloaded clippy v0.0.212
[INFO] [stderr]   Downloaded serenity v0.5.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3020d5a5350307a623aac4761690aadf29de20ff63a4e1e32f6e2013aecf0177
[INFO] running `Command { std: "docker" "start" "-a" "3020d5a5350307a623aac4761690aadf29de20ff63a4e1e32f6e2013aecf0177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3020d5a5350307a623aac4761690aadf29de20ff63a4e1e32f6e2013aecf0177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3020d5a5350307a623aac4761690aadf29de20ff63a4e1e32f6e2013aecf0177", kill_on_drop: false }`
[INFO] [stdout] 3020d5a5350307a623aac4761690aadf29de20ff63a4e1e32f6e2013aecf0177
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe6df3be49d2831fd38a2d11557b139daf936ecfc49bf4fe9cdb3facf20aac38
[INFO] running `Command { std: "docker" "start" "-a" "fe6df3be49d2831fd38a2d11557b139daf936ecfc49bf4fe9cdb3facf20aac38", kill_on_drop: false }`
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling byteorder v1.2.6
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling sha1 v0.2.0
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling log v0.4.5
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]    Compiling unsafe-any v0.4.2
[INFO] [stderr]    Compiling smallvec v0.6.5
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling threadpool v1.7.1
[INFO] [stderr]    Compiling url v1.7.1
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling phf v0.7.23
[INFO] [stdout] error[E0740]: unions may not contain fields that need dropping
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/smallvec-0.6.5/lib.rs:271:5
[INFO] [stdout]     |
[INFO] [stdout] 271 |     inline: A,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `std::mem::ManuallyDrop` can be used to wrap the type
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/smallvec-0.6.5/lib.rs:271:5
[INFO] [stdout]     |
[INFO] [stdout] 271 |     inline: A,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0740`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smallvec` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fe6df3be49d2831fd38a2d11557b139daf936ecfc49bf4fe9cdb3facf20aac38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe6df3be49d2831fd38a2d11557b139daf936ecfc49bf4fe9cdb3facf20aac38", kill_on_drop: false }`
[INFO] [stdout] fe6df3be49d2831fd38a2d11557b139daf936ecfc49bf4fe9cdb3facf20aac38