[INFO] cloning repository https://github.com/unsafe-things/mpc-server [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/unsafe-things/mpc-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funsafe-things%2Fmpc-server", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funsafe-things%2Fmpc-server'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e35ebeb96bd6d376c3de75837b2f70edfe17c8b8 [INFO] building unsafe-things/mpc-server against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Funsafe-things%2Fmpc-server" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/unsafe-things/mpc-server on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-1-tc2/source/rust-toolchain [INFO] started tweaking git repo https://github.com/unsafe-things/mpc-server [INFO] finished tweaking git repo https://github.com/unsafe-things/mpc-server [INFO] tweaked toml for git repo https://github.com/unsafe-things/mpc-server written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/unsafe-things/mpc-server 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "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 json-rpc2 v0.11.1 [INFO] [stderr] Downloaded tokio-tungstenite v0.15.0 [INFO] [stderr] Downloaded mio v0.8.1 [INFO] [stderr] Downloaded syn v1.0.88 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1efe6536a0f95c9a8d2fd810613fd5faebb315794fdc6c539ea6971cee7ac91b [INFO] running `Command { std: "docker" "start" "-a" "1efe6536a0f95c9a8d2fd810613fd5faebb315794fdc6c539ea6971cee7ac91b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1efe6536a0f95c9a8d2fd810613fd5faebb315794fdc6c539ea6971cee7ac91b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1efe6536a0f95c9a8d2fd810613fd5faebb315794fdc6c539ea6971cee7ac91b", kill_on_drop: false }` [INFO] [stdout] 1efe6536a0f95c9a8d2fd810613fd5faebb315794fdc6c539ea6971cee7ac91b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f7232e8c4999b525e2bfd33ace3a91da7c4bffe4f2252a73168dc93b251e8188 [INFO] running `Command { std: "docker" "start" "-a" "f7232e8c4999b525e2bfd33ace3a91da7c4bffe4f2252a73168dc93b251e8188", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.47 [INFO] [stderr] Compiling unicode-ident v1.0.5 [INFO] [stderr] Compiling syn v1.0.88 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling version_check v0.9.4 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling libc v0.2.120 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling typenum v1.15.0 [INFO] [stderr] Compiling itoa v1.0.1 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling bytes v1.1.0 [INFO] [stderr] Compiling pin-project-lite v0.2.8 [INFO] [stderr] Compiling serde_derive v1.0.136 [INFO] [stderr] Compiling futures-core v0.3.21 [INFO] [stderr] Compiling fnv v1.0.7 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling serde v1.0.136 [INFO] [stderr] Compiling futures-task v0.3.21 [INFO] [stderr] Compiling futures-sink v0.3.21 [INFO] [stderr] Compiling tracing-core v0.1.23 [INFO] [stderr] Compiling matches v0.1.9 [INFO] [stderr] Compiling tinyvec_macros v0.1.0 [INFO] [stderr] Compiling ppv-lite86 v0.2.16 [INFO] [stderr] Compiling httparse v1.6.0 [INFO] [stderr] Compiling tinyvec v1.5.1 [INFO] [stderr] Compiling futures-util v0.3.21 [INFO] [stderr] Compiling autocfg v1.1.0 [INFO] [stderr] Compiling percent-encoding v2.1.0 [INFO] [stderr] Compiling cpufeatures v0.2.1 [INFO] [stderr] Compiling generic-array v0.14.5 [INFO] [stderr] Compiling unicase v2.6.0 [INFO] [stderr] Compiling pin-utils v0.1.0 [INFO] [stderr] Compiling slab v0.4.5 [INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/src/lib.rs:92:30 [INFO] [stdout] | [INFO] [stdout] 92 | feature(proc_macro_span, proc_macro_span_shrink) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling ryu v1.0.9 [INFO] [stderr] Compiling http v0.2.6 [INFO] [stderr] Compiling form_urlencoded v1.0.1 [INFO] [stderr] Compiling serde_json v1.0.79 [INFO] [stderr] Compiling unicode-bidi v0.3.7 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stdout] For more information about this error, try `rustc --explain E0635`. [INFO] [stdout] [INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "f7232e8c4999b525e2bfd33ace3a91da7c4bffe4f2252a73168dc93b251e8188", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f7232e8c4999b525e2bfd33ace3a91da7c4bffe4f2252a73168dc93b251e8188", kill_on_drop: false }` [INFO] [stdout] f7232e8c4999b525e2bfd33ace3a91da7c4bffe4f2252a73168dc93b251e8188