[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#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpie-flavor%2Fromeo" "/workspace/builds/worker-45/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-45/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pie-flavor/romeo on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-45/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" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pulldown-cmark v0.1.2
[INFO] [stderr]   Downloaded syn v0.15.6
[INFO] [stderr]   Downloaded toml v0.4.7
[INFO] [stderr]   Downloaded serde_json v1.0.30
[INFO] [stderr]   Downloaded schannel v0.1.13
[INFO] [stderr]   Downloaded base64 v0.8.0
[INFO] [stderr]   Downloaded serenity v0.5.9
[INFO] [stderr]   Downloaded evzht9h3nznqzwl v0.0.3
[INFO] [stderr]   Downloaded multipart v0.13.6
[INFO] [stderr]   Downloaded hyper-native-tls v0.2.4
[INFO] [stderr]   Downloaded cargo_metadata v0.5.8
[INFO] [stderr]   Downloaded clippy_lints v0.0.212
[INFO] [stderr]   Downloaded clippy v0.0.212
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2846e05935cfd69d82708e145bbf048bcb21aa9869dcf4afa73027f88d27aedc
[INFO] running `Command { std: "docker" "start" "-a" "2846e05935cfd69d82708e145bbf048bcb21aa9869dcf4afa73027f88d27aedc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2846e05935cfd69d82708e145bbf048bcb21aa9869dcf4afa73027f88d27aedc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2846e05935cfd69d82708e145bbf048bcb21aa9869dcf4afa73027f88d27aedc", kill_on_drop: false }`
[INFO] [stdout] 2846e05935cfd69d82708e145bbf048bcb21aa9869dcf4afa73027f88d27aedc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53f1b7c2e53eb1987bed05b9d54ac8cdcf73509ef6d5658757aec670329f00a3
[INFO] running `Command { std: "docker" "start" "-a" "53f1b7c2e53eb1987bed05b9d54ac8cdcf73509ef6d5658757aec670329f00a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]    Compiling byteorder v1.2.6
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling httparse v1.3.2
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling sha1 v0.2.0
[INFO] [stderr]    Compiling safemem v0.3.0
[INFO] [stderr]    Compiling antidote v1.0.0
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling log v0.4.5
[INFO] [stderr]    Compiling unsafe-any v0.4.2
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling base64 v0.8.0
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling memchr v2.1.0
[INFO] [stderr]    Compiling threadpool v1.7.1
[INFO] [stderr]    Compiling smallvec v0.6.5
[INFO] [stderr]    Compiling phf_shared 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] help: wrap the type with `std::mem::ManuallyDrop` and ensure it is manually dropped
[INFO] [stdout]     |
[INFO] [stdout] 271 |     inline: std::mem::ManuallyDrop<A>,
[INFO] [stdout]     |             +++++++++++++++++++++++ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling idna v0.1.5
[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" "53f1b7c2e53eb1987bed05b9d54ac8cdcf73509ef6d5658757aec670329f00a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53f1b7c2e53eb1987bed05b9d54ac8cdcf73509ef6d5658757aec670329f00a3", kill_on_drop: false }`
[INFO] [stdout] 53f1b7c2e53eb1987bed05b9d54ac8cdcf73509ef6d5658757aec670329f00a3