[INFO] fetching crate serde_builder 0.2.0...
[INFO] checking serde_builder-0.2.0 against master#b2728d5426bab1d8c39709768c7e22b7f66dde5d for pr-135852
[INFO] extracting crate serde_builder 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate serde_builder 0.2.0 on toolchain b2728d5426bab1d8c39709768c7e22b7f66dde5d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_builder 0.2.0
[INFO] finished tweaking crates.io crate serde_builder 0.2.0
[INFO] tweaked toml for crates.io crate serde_builder 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate serde_builder 0.2.0 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" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded concat-arrays v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e94b2b9cc4c8d87837075d4deac82e0ed9357f53a9e883c018d289117ac658db
[INFO] running `Command { std: "docker" "start" "-a" "e94b2b9cc4c8d87837075d4deac82e0ed9357f53a9e883c018d289117ac658db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e94b2b9cc4c8d87837075d4deac82e0ed9357f53a9e883c018d289117ac658db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e94b2b9cc4c8d87837075d4deac82e0ed9357f53a9e883c018d289117ac658db", kill_on_drop: false }`
[INFO] [stdout] e94b2b9cc4c8d87837075d4deac82e0ed9357f53a9e883c018d289117ac658db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+b2728d5426bab1d8c39709768c7e22b7f66dde5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39efb09d9a6af38db54569367502f425bd3550026d8475f5c5f345e3d926e4a2
[INFO] running `Command { std: "docker" "start" "-a" "39efb09d9a6af38db54569367502f425bd3550026d8475f5c5f345e3d926e4a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.64
[INFO] [stderr]    Compiling quote v1.0.29
[INFO] [stderr]    Compiling unicode-ident v1.0.10
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde v1.0.171
[INFO] [stderr]    Compiling thiserror v1.0.43
[INFO] [stderr]    Compiling serde_json v1.0.100
[INFO] [stderr]     Checking ryu v1.0.14
[INFO] [stderr]     Checking itoa v1.0.8
[INFO] [stderr]    Compiling syn v2.0.25
[INFO] [stdout] error: failed to write to `/opt/rustwide/target/debug/deps/rmetarbwxIO/lib.rmeta`: No space left on device (os error 28)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syn` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "39efb09d9a6af38db54569367502f425bd3550026d8475f5c5f345e3d926e4a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39efb09d9a6af38db54569367502f425bd3550026d8475f5c5f345e3d926e4a2", kill_on_drop: false }`
[INFO] [stdout] 39efb09d9a6af38db54569367502f425bd3550026d8475f5c5f345e3d926e4a2