[INFO] fetching crate forge-exec-ipc-client 0.1.1...
[INFO] testing forge-exec-ipc-client-0.1.1 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate forge-exec-ipc-client 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate forge-exec-ipc-client 0.1.1
[INFO] finished tweaking crates.io crate forge-exec-ipc-client 0.1.1
[INFO] tweaked toml for crates.io crate forge-exec-ipc-client 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate forge-exec-ipc-client 0.1.1 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate forge-exec-ipc-client 0.1.1 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efb486f61c4219692172ace5bde0017ae6b9a90317b88b534c78e1c734446855
[INFO] running `Command { std: "docker" "start" "-a" "efb486f61c4219692172ace5bde0017ae6b9a90317b88b534c78e1c734446855", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efb486f61c4219692172ace5bde0017ae6b9a90317b88b534c78e1c734446855", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efb486f61c4219692172ace5bde0017ae6b9a90317b88b534c78e1c734446855", kill_on_drop: false }`
[INFO] [stdout] efb486f61c4219692172ace5bde0017ae6b9a90317b88b534c78e1c734446855
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c269f5f0de80431a37cf5f6d170bb4fc90928a5b1a756cd003d34d5ecf328a9f
[INFO] running `Command { std: "docker" "start" "-a" "c269f5f0de80431a37cf5f6d170bb4fc90928a5b1a756cd003d34d5ecf328a9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.53
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling serde_derive v1.0.158
[INFO] [stderr]    Compiling serde v1.0.158
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling futures-core v0.3.27
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling event-listener v2.5.3
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling fastrand v1.9.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling rlp v0.5.2
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]    Compiling futures-io v0.3.27
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling concurrent-queue v2.1.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.53/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 rustc_version v0.4.0
[INFO] [stderr]    Compiling async-lock v2.7.0
[INFO] [stderr]    Compiling atomic-waker v1.1.0
[INFO] [stderr]    Compiling impl-rlp v0.3.0
[INFO] [stderr]    Compiling uint v0.9.5
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling async-channel v1.8.0
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling itoa v1.0.6
[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" "c269f5f0de80431a37cf5f6d170bb4fc90928a5b1a756cd003d34d5ecf328a9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c269f5f0de80431a37cf5f6d170bb4fc90928a5b1a756cd003d34d5ecf328a9f", kill_on_drop: false }`
[INFO] [stdout] c269f5f0de80431a37cf5f6d170bb4fc90928a5b1a756cd003d34d5ecf328a9f