[INFO] cloning repository https://github.com/tyshkor/novanacci
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tyshkor/novanacci" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyshkor%2Fnovanacci", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyshkor%2Fnovanacci'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 36d268332a030e24a051f1d0cb1c90aeae220403
[INFO] building tyshkor/novanacci against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyshkor%2Fnovanacci" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tyshkor/novanacci 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] started tweaking git repo https://github.com/tyshkor/novanacci
[INFO] finished tweaking git repo https://github.com/tyshkor/novanacci
[INFO] tweaked toml for git repo https://github.com/tyshkor/novanacci written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tyshkor/novanacci 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]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] building tyshkor/novanacci against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyshkor%2Fnovanacci" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tyshkor/novanacci 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] started tweaking git repo https://github.com/tyshkor/novanacci
[INFO] finished tweaking git repo https://github.com/tyshkor/novanacci
[INFO] tweaked toml for git repo https://github.com/tyshkor/novanacci written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tyshkor/novanacci 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 sppark v0.1.3
[INFO] [stderr]   Downloaded ff_derive v0.13.0
[INFO] [stderr]   Downloaded trait-set v0.3.0
[INFO] [stderr]   Downloaded pasta-msm v0.1.4
[INFO] [stderr]   Downloaded addchain v0.2.0
[INFO] [stderr]   Downloaded blstrs v0.7.0
[INFO] [stderr]   Downloaded ec-gpu-gen v0.6.0
[INFO] [stderr]   Downloaded pairing v0.23.0
[INFO] [stderr]   Downloaded semolina v0.1.4
[INFO] [stderr]   Downloaded bellperson v0.25.0
[INFO] [stderr]   Downloaded neptune v9.0.0
[INFO] [stderr]   Downloaded nova-snark v0.21.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f6851a98df8c521f9fe21b9cf0f3dab0d3609fac1fc6f854433d1bf56184850e
[INFO] running `Command { std: "docker" "start" "-a" "f6851a98df8c521f9fe21b9cf0f3dab0d3609fac1fc6f854433d1bf56184850e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6851a98df8c521f9fe21b9cf0f3dab0d3609fac1fc6f854433d1bf56184850e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6851a98df8c521f9fe21b9cf0f3dab0d3609fac1fc6f854433d1bf56184850e", kill_on_drop: false }`
[INFO] [stdout] f6851a98df8c521f9fe21b9cf0f3dab0d3609fac1fc6f854433d1bf56184850e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 2f28c4f15e7007e560b205059f193fffa269f1cb6a86cab4f84a0c7455abe924
[INFO] running `Command { std: "docker" "start" "-a" "2f28c4f15e7007e560b205059f193fffa269f1cb6a86cab4f84a0c7455abe924", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.58
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling wyz v0.5.1
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling subtle v2.5.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.58/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 rand_xorshift v0.3.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling bitvec v1.0.1
[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" "2f28c4f15e7007e560b205059f193fffa269f1cb6a86cab4f84a0c7455abe924", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f28c4f15e7007e560b205059f193fffa269f1cb6a86cab4f84a0c7455abe924", kill_on_drop: false }`
[INFO] [stdout] 2f28c4f15e7007e560b205059f193fffa269f1cb6a86cab4f84a0c7455abe924