[INFO] cloning repository https://github.com/symbx/rust-libloading-segv-poc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/symbx/rust-libloading-segv-poc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsymbx%2Frust-libloading-segv-poc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsymbx%2Frust-libloading-segv-poc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cbbe5a094d943c264260cbdeda468556d0186b3c
[INFO] checking symbx/rust-libloading-segv-poc against try#50f413885985a8b0a0b6ca0766a0aedd45304953 for pr-155657-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsymbx%2Frust-libloading-segv-poc" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/symbx/rust-libloading-segv-poc
[INFO] finished tweaking git repo https://github.com/symbx/rust-libloading-segv-poc
[INFO] tweaked toml for git repo https://github.com/symbx/rust-libloading-segv-poc written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/symbx/rust-libloading-segv-poc on toolchain 50f413885985a8b0a0b6ca0766a0aedd45304953
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/symbx/rust-libloading-segv-poc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14780c7a47600f38ca685a285fc0d83479d1ec358ca7fff99d671b81d09ec87c
[INFO] running `Command { std: "docker" "start" "-a" "14780c7a47600f38ca685a285fc0d83479d1ec358ca7fff99d671b81d09ec87c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14780c7a47600f38ca685a285fc0d83479d1ec358ca7fff99d671b81d09ec87c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14780c7a47600f38ca685a285fc0d83479d1ec358ca7fff99d671b81d09ec87c", kill_on_drop: false }`
[INFO] [stdout] 14780c7a47600f38ca685a285fc0d83479d1ec358ca7fff99d671b81d09ec87c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+50f413885985a8b0a0b6ca0766a0aedd45304953" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 867e65135946de90022a68cc4260789f731b9b02d019bff4570beb4179644c56
[INFO] running `Command { std: "docker" "start" "-a" "867e65135946de90022a68cc4260789f731b9b02d019bff4570beb4179644c56", kill_on_drop: false }`
[INFO] [stderr]     Checking plg v0.1.0 (/opt/rustwide/workdir/plg)
[INFO] [stderr]     Checking libloading v0.8.6
[INFO] [stderr]     Checking plg-base v0.1.0 (/opt/rustwide/workdir/plg-base)
[INFO] [stdout] warning: `extern` fn uses type `dyn PluginTrait`, which is not FFI-safe
[INFO] [stdout]   --> plg-base/src/lib.rs:12:38
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub extern "C" fn create_plugin() -> *mut dyn PluginTrait {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: trait objects have no C equivalent
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking testapp v0.1.0 (/opt/rustwide/workdir/testapp)
[INFO] [stdout] warning: `extern` fn uses type `dyn PluginTrait`, which is not FFI-safe
[INFO] [stdout]   --> plg-base/src/lib.rs:12:38
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub extern "C" fn create_plugin() -> *mut dyn PluginTrait {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: trait objects have no C equivalent
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "867e65135946de90022a68cc4260789f731b9b02d019bff4570beb4179644c56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "867e65135946de90022a68cc4260789f731b9b02d019bff4570beb4179644c56", kill_on_drop: false }`
[INFO] [stdout] 867e65135946de90022a68cc4260789f731b9b02d019bff4570beb4179644c56
